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MC position controller: Guard against invalid setpoints

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This commit is contained in:
Lorenz Meier 2015-09-05 11:05:46 +02:00
parent b31c341f92
commit 104f38eea8
1 changed files with 32 additions and 10 deletions
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42
src/modules/mc_pos_control/mc_pos_control_main.cpp
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@ -791,18 +791,45 @@ void MulticopterPositionControl::control_auto(float dt)
}
}
bool current_setpoint_valid = false;
bool previous_setpoint_valid = false;
math::Vector<3> prev_sp;
math::Vector<3> curr_sp;
if (_pos_sp_triplet.current.valid) {
/* in case of interrupted mission don't go to waypoint but stay at current position */
_reset_pos_sp = true;
_reset_alt_sp = true;
/* project setpoint to local frame */
math::Vector<3> curr_sp;
map_projection_project(&_ref_pos,
_pos_sp_triplet.current.lat, _pos_sp_triplet.current.lon,
&curr_sp.data[0], &curr_sp.data[1]);
curr_sp(2) = -(_pos_sp_triplet.current.alt - _ref_alt);
if (PX4_ISFINITE(curr_sp(0)) &&
PX4_ISFINITE(curr_sp(1)) &&
PX4_ISFINITE(curr_sp(2))) {
current_setpoint_valid = true;
}
}
if (_pos_sp_triplet.previous.valid) {
map_projection_project(&_ref_pos,
_pos_sp_triplet.previous.lat, _pos_sp_triplet.previous.lon,
&prev_sp.data[0], &prev_sp.data[1]);
prev_sp(2) = -(_pos_sp_triplet.previous.alt - _ref_alt);
if (PX4_ISFINITE(prev_sp(0)) &&
PX4_ISFINITE(prev_sp(1)) &&
PX4_ISFINITE(prev_sp(2))) {
previous_setpoint_valid = true;
}
}
if (current_setpoint_valid) {
/* in case of interrupted mission don't go to waypoint but stay at current position */
_reset_pos_sp = true;
_reset_alt_sp = true;
/* scaled space: 1 == position error resulting max allowed speed */
math::Vector<3> scale = _params.pos_p.edivide(_params.vel_max); // TODO add mult param here
@ -812,13 +839,8 @@ void MulticopterPositionControl::control_auto(float dt)
/* by default use current setpoint as is */
math::Vector<3> pos_sp_s = curr_sp_s;
if (_pos_sp_triplet.current.type == position_setpoint_s::SETPOINT_TYPE_POSITION && _pos_sp_triplet.previous.valid) {
if (_pos_sp_triplet.current.type == position_setpoint_s::SETPOINT_TYPE_POSITION && previous_setpoint_valid) {
/* follow "previous - current" line */
math::Vector<3> prev_sp;
map_projection_project(&_ref_pos,
_pos_sp_triplet.previous.lat, _pos_sp_triplet.previous.lon,
&prev_sp.data[0], &prev_sp.data[1]);
prev_sp(2) = -(_pos_sp_triplet.previous.alt - _ref_alt);
if ((curr_sp - prev_sp).length() > MIN_DIST) {