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Added more constraints around velocity

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This commit is contained in:
Jason Short 2011-12-31 10:59:59 -08:00
parent b3cea96970
commit 26d0bf93ff
1 changed files with 20 additions and 9 deletions
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29
ArduCopter/navigation.pde
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@ -94,6 +94,17 @@ static void calc_location_error(struct Location *next_loc)
lat_error = next_loc->lat - current_loc.lat; // 500 - 0 = 500 Go North
}
static void calc_position_hold()
{
// only if we are not moving
//if (x_actual_speed == 0){
// // what is the error?
// int16_t x_iterm = g.pi_loiter_lon.get_i(x_error, dTnav);
//}
}
#define NAV_ERR_MAX 800
static void calc_loiter(int x_error, int y_error)
{
@ -102,20 +113,20 @@ static void calc_loiter(int x_error, int y_error)
int16_t x_target_speed = g.pi_loiter_lon.get_p(x_error);
int16_t x_iterm = g.pi_loiter_lon.get_i(x_error, dTnav);
x_rate_error = x_target_speed - x_actual_speed;
x_rate_error = constrain(x_rate_error, -1000, 1000);
nav_lon_p = g.pi_nav_lon.get_p(x_rate_error);
nav_lon_p = constrain(nav_lon_p, -3500, 3500);
nav_lon_p = constrain(nav_lon_p, -1200, 1200);
nav_lon = nav_lon_p + x_iterm;
nav_lon = constrain(nav_lon, -2500, 2500);
// North/South
y_error = constrain(y_error, -NAV_ERR_MAX, NAV_ERR_MAX);
int16_t y_target_speed = g.pi_loiter_lat.get_p(y_error);
int16_t y_iterm = g.pi_loiter_lat.get_i(y_error, dTnav);
y_rate_error = y_target_speed - y_actual_speed; // 413
y_rate_error = constrain(y_rate_error, -1000, 1000); // added a rate error limit to keep pitching down to a minimum
y_rate_error = y_target_speed - y_actual_speed;
nav_lat_p = g.pi_nav_lat.get_p(y_rate_error);
nav_lat_p = constrain(nav_lat_p, -3500, 3500);
nav_lat_p = constrain(nav_lat_p, -1200, 1200);
nav_lat = nav_lat_p + y_iterm;
nav_lat = constrain(nav_lat, -2500, 2500);
/*
int8_t ttt = 1.0/dTnav;
@ -232,23 +243,23 @@ static void calc_nav_rate(int max_speed)
//x_actual_speed = -sin(temp) * (float)g_gps->ground_speed;
x_rate_error = (cos(temp) * max_speed) - x_actual_speed; // 413
x_rate_error = constrain(x_rate_error, -1400, 1400);
x_rate_error = constrain(x_rate_error, -1000, 1000);
int16_t x_iterm = g.pi_loiter_lon.get_i(x_rate_error, dTnav);
nav_lon_p = g.pi_nav_lon.get_p(x_rate_error);
nav_lon_p = constrain(nav_lon_p, -3500, 3500);
nav_lon = nav_lon_p + x_iterm;
nav_lon = constrain(nav_lon, -3000, 3000);
// heading towards target
//y_actual_speed = cos(temp) * (float)g_gps->ground_speed;
y_rate_error = (sin(temp) * max_speed) - y_actual_speed; // 413
y_rate_error = constrain(y_rate_error, -1400, 1400); // added a rate error limit to keep pitching down to a minimum
y_rate_error = constrain(y_rate_error, -1000, 1000); // added a rate error limit to keep pitching down to a minimum
int16_t y_iterm = g.pi_loiter_lat.get_i(y_rate_error, dTnav);
nav_lat_p = g.pi_nav_lat.get_p(y_rate_error);
nav_lat_p = constrain(nav_lat_p, -3500, 3500);
nav_lat = nav_lat_p + y_iterm;
nav_lat = constrain(nav_lat, -3000, 3000);
/*
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",