mirror of https://github.com/ArduPilot/ardupilot
Merge branch 'master' of https://code.google.com/p/ardupilot-mega
This commit is contained in:
Chris Anderson
commit
31765310ac
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@ -69,6 +69,3 @@
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// enable this for the new 'APM2' hardware
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// #define CONFIG_APM_HARDWARE APM_HARDWARE_APM2
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// #define APM2_BETA_HARDWARE // for developers who received an early beta board with the older BMP085
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#define LOITER_METHOD 0
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// set to 1 to try an alternative Loiter control method
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@ -1,6 +1,6 @@
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/// -*- tab-width: 4; Mode: C++; c-basic-offset: 4; indent-tabs-mode: nil -*-
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#define THISFIRMWARE "ArduCopter V2.1.1r3 alpha"
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#define THISFIRMWARE "ArduCopter V2.1.1r4 alpha"
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/*
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ArduCopter Version 2.0 Beta
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Authors: Jason Short
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@ -366,6 +366,7 @@ static bool nav_ok;
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static const float radius_of_earth = 6378100; // meters
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static const float gravity = 9.81; // meters/ sec^2
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static int32_t target_bearing; // deg * 100 : 0 to 360 location of the plane to the target
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static int32_t nav_bearing; // deg * 100 : 0 to 360 location of the plane to the target
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static int32_t home_bearing; // used to track difference in angle
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static byte wp_control; // used to control - navgation or loiter
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@ -1390,8 +1391,6 @@ static void update_navigation()
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// reset LOITER to current position
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next_WP = current_loc;
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// clear Loiter Iterms
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reset_nav();
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}else{
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// this is also set by GPS in update_nav
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wp_control = LOITER_MODE;
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@ -1762,7 +1761,8 @@ static void update_nav_wp()
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// use error as the desired rate towards the target
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calc_nav_rate(g.waypoint_speed_max);
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// rotate pitch and roll to the copter frame of reference
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calc_nav_pitch_roll();
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//calc_nav_pitch_roll();
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calc_loiter_pitch_roll();
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}else if(wp_control == NO_NAV_MODE){
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nav_roll = 0;
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@ -1772,11 +1772,16 @@ static void update_nav_wp()
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static void update_auto_yaw()
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{
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// If we Loiter, don't start Yawing, allow Yaw control
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if(wp_control == LOITER_MODE)
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return;
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// this tracks a location so the copter is always pointing towards it.
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if(yaw_tracking == MAV_ROI_LOCATION){
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auto_yaw = get_bearing(¤t_loc, &target_WP);
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}else if(yaw_tracking == MAV_ROI_WPNEXT){
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// Point towards next WP
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auto_yaw = target_bearing;
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}
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// MAV_ROI_NONE = basic Yaw hold
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@ -243,8 +243,8 @@ static void reset_nav(void)
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g.pi_nav_lon.reset_I();
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// considering not reseting wind control
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//g.pi_loiter_lat.reset_I();
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//g.pi_loiter_lon.reset_I();
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g.pi_loiter_lat.reset_I();
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g.pi_loiter_lon.reset_I();
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circle_angle = 0;
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crosstrack_error = 0;
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@ -116,12 +116,12 @@ static void NOINLINE send_nav_controller_output(mavlink_channel_t chan)
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chan,
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nav_roll / 1.0e2,
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nav_pitch / 1.0e2,
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nav_bearing / 1.0e2,
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target_bearing / 1.0e2,
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dcm.yaw_sensor / 1.0e2, // was target_bearing
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wp_distance,
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altitude_error / 1.0e2,
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nav_lon, // was 0
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nav_lat); // was 0
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0,
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crosstrack_error); // was 0
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}
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static void NOINLINE send_gps_raw(mavlink_channel_t chan)
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@ -329,7 +329,7 @@ public:
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waypoint_radius (WP_RADIUS_DEFAULT, k_param_waypoint_radius, PSTR("WP_RADIUS")),
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loiter_radius (LOITER_RADIUS, k_param_loiter_radius, PSTR("WP_LOITER_RAD")),
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waypoint_speed_max (WAYPOINT_SPEED_MAX, k_param_waypoint_speed_max, PSTR("WP_SPEED_MAX")),
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crosstrack_gain (CROSSTRACK_GAIN, k_param_crosstrack_gain, PSTR("XTRK_GAIN_SC")),
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crosstrack_gain (CROSSTRACK_GAIN * 100, k_param_crosstrack_gain, PSTR("XTRK_GAIN_SC")),
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throttle_min (0, k_param_throttle_min, PSTR("THR_MIN")),
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throttle_max (1000, k_param_throttle_max, PSTR("THR_MAX")),
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@ -8,6 +8,9 @@ static void init_commands()
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prev_nav_index = NO_COMMAND;
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command_cond_queue.id = NO_COMMAND;
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command_nav_queue.id = NO_COMMAND;
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// default Yaw tracking
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yaw_tracking = MAV_ROI_WPNEXT;
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}
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// Getters
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@ -176,6 +179,7 @@ static void set_next_WP(struct Location *wp)
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wp_totalDistance = get_distance(¤t_loc, &next_WP);
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wp_distance = wp_totalDistance;
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target_bearing = get_bearing(&prev_WP, &next_WP);
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nav_bearing = target_bearing;
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// to check if we have missed the WP
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// ---------------------------------
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@ -122,7 +122,7 @@ static void execute_nav_command(void)
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process_nav_command();
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// clear navigation prameters
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reset_nav();
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//reset_nav();
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// clear May indexes to force loading of more commands
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// existing May commands are tossed.
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@ -508,7 +508,7 @@
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#ifndef STABILIZE_D
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# define STABILIZE_D .25
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# define STABILIZE_D .2
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#endif
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// Jasons default values that are good for smaller payload motors.
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@ -606,17 +606,17 @@
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// Navigation control gains
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//
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#ifndef LOITER_P
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# define LOITER_P .2 // .3 was too aggressive
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# define LOITER_P .25 //
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#endif
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#ifndef LOITER_I
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# define LOITER_I 0.05 // Wind control
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# define LOITER_I 0.1 // Wind control
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#endif
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#ifndef LOITER_IMAX
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# define LOITER_IMAX 30 // degrees°
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#endif
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#ifndef NAV_P
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# define NAV_P 1.5 // 3 was causing rapid oscillations in Loiter
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# define NAV_P 2.2 // 3 was causing rapid oscillations in Loiter
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#endif
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#ifndef NAV_I
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# define NAV_I 0.15 // used in traverals
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@ -649,7 +649,7 @@
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// RATE control
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#ifndef THROTTLE_P
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# define THROTTLE_P 0.4 //
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# define THROTTLE_P 0.5 //
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#endif
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#ifndef THROTTLE_I
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# define THROTTLE_I 0.0 //
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@ -663,7 +663,7 @@
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// Crosstrack compensation
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//
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#ifndef CROSSTRACK_GAIN
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# define CROSSTRACK_GAIN 40
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# define CROSSTRACK_GAIN 1
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#endif
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@ -22,6 +22,10 @@ static byte navigate()
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target_bearing = get_bearing(¤t_loc, &next_WP);
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home_to_copter_bearing = get_bearing(&home, ¤t_loc);
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// nav_bearing will includes xtrac correction
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// ------------------------------------------
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nav_bearing = target_bearing;
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return 1;
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}
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@ -55,13 +59,16 @@ static void calc_XY_velocity(){
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x_GPS_speed = (x_GPS_speed * 3 + x_diff) / 4;
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y_GPS_speed = (y_GPS_speed * 3 + y_diff) / 4;
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if(g_gps->ground_speed > 120){
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// Above simply works better than GPS groundspeed
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// which is proving to be problematic
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/*if(g_gps->ground_speed > 120){
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// Derive X/Y speed from GPS
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// this is far more accurate when traveling about 1.5m/s
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float temp = g_gps->ground_course * RADX100;
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x_GPS_speed = sin(temp) * (float)g_gps->ground_speed;
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y_GPS_speed = cos(temp) * (float)g_gps->ground_speed;
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}
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}*/
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last_longitude = g_gps->longitude;
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last_latutude = g_gps->latitude;
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@ -110,7 +117,7 @@ static void calc_loiter(int x_error, int y_error)
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nav_lat_p = constrain(nav_lat_p, -3500, 3500);
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nav_lat = nav_lat_p + y_iterm;
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///*
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/*
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int8_t ttt = 1.0/dTnav;
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int16_t t2 = g.pi_nav_lat.get_integrator();
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@ -119,6 +126,7 @@ static void calc_loiter(int x_error, int y_error)
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wp_distance, //1
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y_error, //2
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y_GPS_speed, //3
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y_actual_speed, //4 ;
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y_target_speed, //5
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y_rate_error, //6
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@ -152,16 +160,24 @@ static void calc_loiter(int x_error, int y_error)
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static void estimate_velocity()
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{
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// we need to extimate velocity when below GPS threshold of 1.5m/s
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if(g_gps->ground_speed < 150){
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//if(g_gps->ground_speed < 120){
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// some smoothing to prevent bumpy rides
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x_actual_speed = (x_actual_speed * 15 + x_GPS_speed) / 16;
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y_actual_speed = (y_actual_speed * 15 + y_GPS_speed) / 16;
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}else{
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// integration of nav_p angle
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//x_actual_speed += (nav_lon_p >>2);
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//y_actual_speed += (nav_lat_p >>2);
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// this is just what worked best in SIM
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//x_actual_speed = (x_actual_speed * 2 + x_GPS_speed * 1) / 4;
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//y_actual_speed = (y_actual_speed * 2 + y_GPS_speed * 1) / 4;
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//}else{
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// less smoothing needed since the GPS already filters
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x_actual_speed = (x_actual_speed * 3 + x_GPS_speed) / 4;
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y_actual_speed = (y_actual_speed * 3 + y_GPS_speed) / 4;
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}
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// x_actual_speed = (x_actual_speed * 3 + x_GPS_speed) / 4;
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// y_actual_speed = (y_actual_speed * 3 + y_GPS_speed) / 4;
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//}
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}
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// this calculation rotates our World frame of reference to the copter's frame of reference
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@ -206,32 +222,47 @@ static void calc_nav_rate(int max_speed)
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max_speed = min(max_speed, waypoint_speed_gov);
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}
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float temp = (target_bearing - g_gps->ground_course) * RADX100;
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// push us towards the original track
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update_crosstrack();
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// nav_bearing includes crosstrack
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float temp = (9000 - nav_bearing) * RADX100;
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// heading laterally, we want a zero speed here
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x_actual_speed = -sin(temp) * (float)g_gps->ground_speed;
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x_rate_error = crosstrack_error -x_actual_speed;
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//x_actual_speed = -sin(temp) * (float)g_gps->ground_speed;
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x_rate_error = (cos(temp) * max_speed) - x_actual_speed; // 413
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x_rate_error = constrain(x_rate_error, -1400, 1400);
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nav_lon = constrain(g.pi_nav_lon.get_pi(x_rate_error, dTnav), -3500, 3500);
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/*Serial.printf("max_sp %d,\tx_actual_sp %d,\tx_rate_err: %d, Xtrack %d, \tnav_lon: %d,\ty_actual_sp %d,\ty_rate_err: %d,\tnav_lat: %d,\n",
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max_speed,
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x_actual_speed,
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x_rate_error,
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crosstrack_error,
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nav_lon,
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y_actual_speed,
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y_rate_error,
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nav_lat);
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//*/
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int16_t x_iterm = g.pi_loiter_lon.get_i(x_rate_error, dTnav);
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nav_lon_p = g.pi_nav_lon.get_p(x_rate_error);
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nav_lon_p = constrain(nav_lon_p, -3500, 3500);
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nav_lon = nav_lon_p + x_iterm;
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// heading towards target
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y_actual_speed = cos(temp) * (float)g_gps->ground_speed;
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y_rate_error = max_speed - y_actual_speed; // 413
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//y_actual_speed = cos(temp) * (float)g_gps->ground_speed;
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y_rate_error = (sin(temp) * max_speed) - y_actual_speed; // 413
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y_rate_error = constrain(y_rate_error, -1400, 1400); // added a rate error limit to keep pitching down to a minimum
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nav_lat = constrain(g.pi_nav_lat.get_pi(y_rate_error, dTnav), -3500, 3500);
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int16_t y_iterm = g.pi_loiter_lat.get_i(y_rate_error, dTnav);
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nav_lat_p = g.pi_nav_lat.get_p(y_rate_error);
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nav_lat_p = constrain(nav_lat_p, -3500, 3500);
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nav_lat = nav_lat_p + y_iterm;
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/*
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Serial.printf("max_sp %d,\t x_sp %d, y_sp %d,\t x_re: %d, y_re: %d, \tnav_lon: %d, nav_lat: %d, Xi:%d, Yi:%d, \t XE %d \n",
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max_speed,
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x_actual_speed,
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y_actual_speed,
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x_rate_error,
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y_rate_error,
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nav_lon,
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nav_lat,
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x_iterm,
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y_iterm,
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crosstrack_error);
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//*/
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// nav_lat and nav_lon will be rotated to the angle of the quad in calc_nav_pitch_roll()
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@ -246,53 +277,21 @@ static void calc_nav_rate(int max_speed)
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nav_lat);*/
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}
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static void update_crosstrack(void)
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{
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// Crosstrack Error
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// ----------------
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if (cross_track_test() < 4000) { // If we are too far off or too close we don't do track following
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if (abs(wrap_180(target_bearing - original_target_bearing)) < 4500) { // If we are too far off or too close we don't do track following
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float temp = (target_bearing - original_target_bearing) * RADX100;
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crosstrack_error = sin(temp) * (wp_distance * g.crosstrack_gain); // Meters we are off track line
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crosstrack_error = constrain(crosstrack_error, -1200, 1200);
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nav_bearing = target_bearing + constrain(crosstrack_error, -3000, 3000);
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nav_bearing = wrap_360(nav_bearing);
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}else{
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nav_bearing = target_bearing;
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}
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}
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// used to generate the offset angle for testing crosstrack viability
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static int32_t cross_track_test()
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{
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int32_t temp;
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temp = target_bearing - original_target_bearing;
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temp = wrap_180(temp);
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return abs(temp);
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}
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// this calculation is different than loiter above because we are in a different Frame of Reference.
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// nav_lat is pointed towards the target, where as in Loiter, nav_lat is pointed north!
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static void calc_nav_pitch_roll()
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{
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int32_t angle = wrap_360(dcm.yaw_sensor - target_bearing);
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float temp = (9000l - angle) * RADX100;
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//t: 1.5465, t1: -10.9451, t2: 1.5359, t3: 1.5465
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float _cos_yaw_x = cos(temp);
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float _sin_yaw_y = sin(temp);
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// rotate the vector
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nav_roll = (float)nav_lon * _sin_yaw_y - (float)nav_lat * _cos_yaw_x;
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nav_pitch = (float)nav_lon * _cos_yaw_x + (float)nav_lat * _sin_yaw_y;
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// flip pitch because forward is negative
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nav_pitch = -nav_pitch;
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/*Serial.printf("Yaw %d, Tbear:%d, \tangle: %d, \t_cos_yaw_x:%1.4f, _sin_yaw_y:%1.4f, nav_roll:%d, nav_pitch:%d\n",
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dcm.yaw_sensor,
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target_bearing,
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angle,
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_cos_yaw_x,
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_sin_yaw_y,
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nav_roll,
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nav_pitch);*/
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}
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static int32_t get_altitude_error()
|
||||
{
|
||||
|
|
|
|||
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