Merge branch 'master' into test_bottle_drop_paul

Conflicts:
	ROMFS/px4fmu_common/init.d/3035_viper
This commit is contained in:
Julian Oes
2014-08-09 19:59:45 +02:00
5 changed files with 223 additions and 145 deletions
+1 -1
View File
@@ -7,4 +7,4 @@
sh /etc/init.d/rc.fw_defaults
set MIXER FMU_FX79
set MIXER Viper
+2 -2
View File
@@ -27,12 +27,12 @@ for the elevons.
M: 2
O: 10000 10000 0 -10000 10000
S: 0 0 5000 8000 0 -10000 10000
S: 0 0 7500 7500 0 -10000 10000
S: 0 1 8000 8000 0 -10000 10000
M: 2
O: 10000 10000 0 -10000 10000
S: 0 0 8000 5000 0 -10000 10000
S: 0 0 7500 7500 0 -10000 10000
S: 0 1 -8000 -8000 0 -10000 10000
Output 2
+72
View File
@@ -0,0 +1,72 @@
Viper Delta-wing mixer
=================================
Designed for Viper.
TODO (sjwilks): Add mixers for flaps.
This file defines mixers suitable for controlling a delta wing aircraft using
PX4FMU. The configuration assumes the elevon servos are connected to PX4FMU
servo outputs 0 and 1 and the motor speed control to output 3. Output 2 is
assumed to be unused.
Inputs to the mixer come from channel group 0 (vehicle attitude), channels 0
(roll), 1 (pitch) and 3 (thrust).
See the README for more information on the scaler format.
Elevon mixers
-------------
Three scalers total (output, roll, pitch).
On the assumption that the two elevon servos are physically reversed, the pitch
input is inverted between the two servos.
The scaling factor for roll inputs is adjusted to implement differential travel
for the elevons.
M: 2
O: 10000 10000 0 -10000 10000
S: 0 0 7500 7500 0 -10000 10000
S: 0 1 8000 8000 0 -10000 10000
M: 2
O: 10000 10000 0 -10000 10000
S: 0 0 7500 7500 0 -10000 10000
S: 0 1 -8000 -8000 0 -10000 10000
Output 2
--------
This mixer is empty.
Z:
Motor speed mixer
-----------------
Two scalers total (output, thrust).
This mixer generates a full-range output (-1 to 1) from an input in the (0 - 1)
range. Inputs below zero are treated as zero.
M: 1
O: 10000 10000 0 -10000 10000
S: 0 3 0 20000 -10000 -10000 10000
Gimbal / flaps / payload mixer for last four channels
-----------------------------------------------------
M: 1
O: 10000 10000 0 -10000 10000
S: 0 4 10000 10000 0 -10000 10000
M: 1
O: 10000 10000 0 -10000 10000
S: 0 5 10000 10000 0 -10000 10000
M: 1
O: 10000 10000 0 -10000 10000
S: 0 6 10000 10000 0 -10000 10000
M: 1
O: 10000 10000 0 -10000 10000
S: 0 7 10000 10000 0 -10000 10000
+144 -138
View File
@@ -105,6 +105,7 @@ public:
int start();
private:
const float alt_ctl_dz = 0.2f;
bool _task_should_exit; /**< if true, task should exit */
int _control_task; /**< task handle for task */
@@ -184,6 +185,8 @@ private:
math::Vector<3> _vel;
math::Vector<3> _vel_sp;
math::Vector<3> _vel_prev; /**< velocity on previous step */
math::Vector<3> _vel_ff;
math::Vector<3> _sp_move_rate;
/**
* Update our local parameter cache.
@@ -216,6 +219,16 @@ private:
*/
void reset_alt_sp();
/**
* Set position setpoint using manual control
*/
void control_manual(float dt);
/**
* Set position setpoint using offboard control
*/
void control_offboard(float dt);
/**
* Select between barometric and global (AMSL) altitudes
*/
@@ -297,6 +310,8 @@ MulticopterPositionControl::MulticopterPositionControl() :
_vel.zero();
_vel_sp.zero();
_vel_prev.zero();
_vel_ff.zero();
_sp_move_rate.zero();
_params_handles.thr_min = param_find("MPC_THR_MIN");
_params_handles.thr_max = param_find("MPC_THR_MAX");
@@ -392,9 +407,11 @@ MulticopterPositionControl::parameters_update(bool force)
param_get(_params_handles.z_vel_max, &v);
_params.vel_max(2) = v;
param_get(_params_handles.xy_ff, &v);
v = math::constrain(v, 0.0f, 1.0f);
_params.vel_ff(0) = v;
_params.vel_ff(1) = v;
param_get(_params_handles.z_ff, &v);
v = math::constrain(v, 0.0f, 1.0f);
_params.vel_ff(2) = v;
_params.sp_offs_max = _params.vel_max.edivide(_params.pos_p) * 2.0f;
@@ -497,8 +514,11 @@ MulticopterPositionControl::reset_pos_sp()
{
if (_reset_pos_sp) {
_reset_pos_sp = false;
_pos_sp(0) = _pos(0);
_pos_sp(1) = _pos(1);
/* shift position setpoint to make attitude setpoint continuous */
_pos_sp(0) = _pos(0) + (_vel(0) - _att_sp.R_body[0][2] * _att_sp.thrust / _params.vel_p(0)
- _params.vel_ff(0) * _sp_move_rate(0)) / _params.pos_p(0);
_pos_sp(1) = _pos(1) + (_vel(1) - _att_sp.R_body[1][2] * _att_sp.thrust / _params.vel_p(1)
- _params.vel_ff(1) * _sp_move_rate(1)) / _params.pos_p(1);
mavlink_log_info(_mavlink_fd, "[mpc] reset pos sp: %.2f, %.2f", (double)_pos_sp(0), (double)_pos_sp(1));
}
}
@@ -508,11 +528,125 @@ MulticopterPositionControl::reset_alt_sp()
{
if (_reset_alt_sp) {
_reset_alt_sp = false;
_pos_sp(2) = _pos(2);
_pos_sp(2) = _pos(2) + (_vel(2) - _params.vel_ff(2) * _sp_move_rate(2)) / _params.pos_p(2);
mavlink_log_info(_mavlink_fd, "[mpc] reset alt sp: %.2f", -(double)_pos_sp(2));
}
}
void
MulticopterPositionControl::control_manual(float dt)
{
_sp_move_rate.zero();
if (_control_mode.flag_control_altitude_enabled) {
/* move altitude setpoint with throttle stick */
_sp_move_rate(2) = -scale_control(_manual.z - 0.5f, 0.5f, alt_ctl_dz);
}
if (_control_mode.flag_control_position_enabled) {
/* move position setpoint with roll/pitch stick */
_sp_move_rate(0) = _manual.x;
_sp_move_rate(1) = _manual.y;
}
/* limit setpoint move rate */
float sp_move_norm = _sp_move_rate.length();
if (sp_move_norm > 1.0f) {
_sp_move_rate /= sp_move_norm;
}
/* _sp_move_rate scaled to 0..1, scale it to max speed and rotate around yaw */
math::Matrix<3, 3> R_yaw_sp;
R_yaw_sp.from_euler(0.0f, 0.0f, _att_sp.yaw_body);
_sp_move_rate = R_yaw_sp * _sp_move_rate.emult(_params.vel_max);
if (_control_mode.flag_control_altitude_enabled) {
/* reset alt setpoint to current altitude if needed */
reset_alt_sp();
}
if (_control_mode.flag_control_position_enabled) {
/* reset position setpoint to current position if needed */
reset_pos_sp();
}
/* feed forward setpoint move rate with weight vel_ff */
_vel_ff = _sp_move_rate.emult(_params.vel_ff);
/* move position setpoint */
_pos_sp += _sp_move_rate * dt;
/* check if position setpoint is too far from actual position */
math::Vector<3> pos_sp_offs;
pos_sp_offs.zero();
if (_control_mode.flag_control_position_enabled) {
pos_sp_offs(0) = (_pos_sp(0) - _pos(0)) / _params.sp_offs_max(0);
pos_sp_offs(1) = (_pos_sp(1) - _pos(1)) / _params.sp_offs_max(1);
}
if (_control_mode.flag_control_altitude_enabled) {
pos_sp_offs(2) = (_pos_sp(2) - _pos(2)) / _params.sp_offs_max(2);
}
float pos_sp_offs_norm = pos_sp_offs.length();
if (pos_sp_offs_norm > 1.0f) {
pos_sp_offs /= pos_sp_offs_norm;
_pos_sp = _pos + pos_sp_offs.emult(_params.sp_offs_max);
}
}
void
MulticopterPositionControl::control_offboard(float dt)
{
bool updated;
orb_check(_pos_sp_triplet_sub, &updated);
if (updated) {
orb_copy(ORB_ID(position_setpoint_triplet), _pos_sp_triplet_sub, &_pos_sp_triplet);
}
if (_pos_sp_triplet.current.valid) {
if (_control_mode.flag_control_position_enabled && _pos_sp_triplet.current.position_valid) {
/* control position */
_pos_sp(0) = _pos_sp_triplet.current.x;
_pos_sp(1) = _pos_sp_triplet.current.y;
_pos_sp(2) = _pos_sp_triplet.current.z;
_att_sp.yaw_body = _pos_sp_triplet.current.yaw;
} else if (_control_mode.flag_control_velocity_enabled && _pos_sp_triplet.current.velocity_valid) {
/* control velocity */
/* reset position setpoint to current position if needed */
reset_pos_sp();
/* set position setpoint move rate */
_sp_move_rate(0) = _pos_sp_triplet.current.vx;
_sp_move_rate(1) = _pos_sp_triplet.current.vy;
_att_sp.yaw_body = _att_sp.yaw_body + _pos_sp_triplet.current.yawspeed * dt;
}
if (_control_mode.flag_control_altitude_enabled) {
/* reset alt setpoint to current altitude if needed */
reset_alt_sp();
/* set altitude setpoint move rate */
_sp_move_rate(2) = _pos_sp_triplet.current.vz;
}
/* feed forward setpoint move rate with weight vel_ff */
_vel_ff = _sp_move_rate.emult(_params.vel_ff);
/* move position setpoint */
_pos_sp += _sp_move_rate * dt;
} else {
reset_pos_sp();
reset_alt_sp();
}
}
void
MulticopterPositionControl::task_main()
{
@@ -551,13 +685,6 @@ MulticopterPositionControl::task_main()
hrt_abstime t_prev = 0;
const float alt_ctl_dz = 0.2f;
math::Vector<3> sp_move_rate;
sp_move_rate.zero();
float yaw_sp_move_rate;
math::Vector<3> thrust_int;
thrust_int.zero();
math::Matrix<3, 3> R;
@@ -616,138 +743,17 @@ MulticopterPositionControl::task_main()
_vel(1) = _local_pos.vy;
_vel(2) = _local_pos.vz;
sp_move_rate.zero();
_vel_ff.zero();
_sp_move_rate.zero();
/* select control source */
if (_control_mode.flag_control_manual_enabled) {
/* manual control */
if (_control_mode.flag_control_altitude_enabled) {
/* reset alt setpoint to current altitude if needed */
reset_alt_sp();
/* move altitude setpoint with throttle stick */
sp_move_rate(2) = -scale_control(_manual.z - 0.5f, 0.5f, alt_ctl_dz);
}
if (_control_mode.flag_control_position_enabled) {
/* reset position setpoint to current position if needed */
reset_pos_sp();
/* move position setpoint with roll/pitch stick */
sp_move_rate(0) = _manual.x;
sp_move_rate(1) = _manual.y;
}
/* limit setpoint move rate */
float sp_move_norm = sp_move_rate.length();
if (sp_move_norm > 1.0f) {
sp_move_rate /= sp_move_norm;
}
/* scale to max speed and rotate around yaw */
math::Matrix<3, 3> R_yaw_sp;
R_yaw_sp.from_euler(0.0f, 0.0f, _att_sp.yaw_body);
sp_move_rate = R_yaw_sp * sp_move_rate.emult(_params.vel_max);
/* move position setpoint */
_pos_sp += sp_move_rate * dt;
/* check if position setpoint is too far from actual position */
math::Vector<3> pos_sp_offs;
pos_sp_offs.zero();
if (_control_mode.flag_control_position_enabled) {
pos_sp_offs(0) = (_pos_sp(0) - _pos(0)) / _params.sp_offs_max(0);
pos_sp_offs(1) = (_pos_sp(1) - _pos(1)) / _params.sp_offs_max(1);
}
if (_control_mode.flag_control_altitude_enabled) {
pos_sp_offs(2) = (_pos_sp(2) - _pos(2)) / _params.sp_offs_max(2);
}
float pos_sp_offs_norm = pos_sp_offs.length();
if (pos_sp_offs_norm > 1.0f) {
pos_sp_offs /= pos_sp_offs_norm;
_pos_sp = _pos + pos_sp_offs.emult(_params.sp_offs_max);
}
control_manual(dt);
} else if (_control_mode.flag_control_offboard_enabled) {
/* Offboard control */
bool updated;
orb_check(_pos_sp_triplet_sub, &updated);
if (updated) {
orb_copy(ORB_ID(position_setpoint_triplet), _pos_sp_triplet_sub, &_pos_sp_triplet);
}
if (_pos_sp_triplet.current.valid) {
if (_control_mode.flag_control_position_enabled && _pos_sp_triplet.current.position_valid) {
_pos_sp(0) = _pos_sp_triplet.current.x;
_pos_sp(1) = _pos_sp_triplet.current.y;
_pos_sp(2) = _pos_sp_triplet.current.z;
_att_sp.yaw_body = _pos_sp_triplet.current.yaw;
} else if (_control_mode.flag_control_velocity_enabled && _pos_sp_triplet.current.velocity_valid) {
/* reset position setpoint to current position if needed */
reset_pos_sp();
/* move position setpoint with roll/pitch stick */
sp_move_rate(0) = _pos_sp_triplet.current.vx;
sp_move_rate(1) = _pos_sp_triplet.current.vy;
yaw_sp_move_rate = _pos_sp_triplet.current.yawspeed;
_att_sp.yaw_body = _att.yaw + yaw_sp_move_rate * dt;
}
if (_control_mode.flag_control_altitude_enabled) {
/* reset alt setpoint to current altitude if needed */
reset_alt_sp();
/* move altitude setpoint with throttle stick */
sp_move_rate(2) = -scale_control(_pos_sp_triplet.current.vz - 0.5f, 0.5f, alt_ctl_dz);;
}
/* limit setpoint move rate */
float sp_move_norm = sp_move_rate.length();
if (sp_move_norm > 1.0f) {
sp_move_rate /= sp_move_norm;
}
/* scale to max speed and rotate around yaw */
math::Matrix<3, 3> R_yaw_sp;
R_yaw_sp.from_euler(0.0f, 0.0f, _att_sp.yaw_body);
sp_move_rate = R_yaw_sp * sp_move_rate.emult(_params.vel_max);
/* move position setpoint */
_pos_sp += sp_move_rate * dt;
/* check if position setpoint is too far from actual position */
math::Vector<3> pos_sp_offs;
pos_sp_offs.zero();
if (_control_mode.flag_control_position_enabled) {
pos_sp_offs(0) = (_pos_sp(0) - _pos(0)) / _params.sp_offs_max(0);
pos_sp_offs(1) = (_pos_sp(1) - _pos(1)) / _params.sp_offs_max(1);
}
if (_control_mode.flag_control_altitude_enabled) {
pos_sp_offs(2) = (_pos_sp(2) - _pos(2)) / _params.sp_offs_max(2);
}
float pos_sp_offs_norm = pos_sp_offs.length();
if (pos_sp_offs_norm > 1.0f) {
pos_sp_offs /= pos_sp_offs_norm;
_pos_sp = _pos + pos_sp_offs.emult(_params.sp_offs_max);
}
} else {
reset_pos_sp();
reset_alt_sp();
}
/* offboard control */
control_offboard(dt);
} else {
/* AUTO */
@@ -821,7 +827,7 @@ MulticopterPositionControl::task_main()
/* run position & altitude controllers, calculate velocity setpoint */
math::Vector<3> pos_err = _pos_sp - _pos;
_vel_sp = pos_err.emult(_params.pos_p) + sp_move_rate.emult(_params.vel_ff);
_vel_sp = pos_err.emult(_params.pos_p) + _vel_ff;
if (!_control_mode.flag_control_altitude_enabled) {
_reset_alt_sp = true;
@@ -901,7 +907,7 @@ MulticopterPositionControl::task_main()
math::Vector<3> vel_err = _vel_sp - _vel;
/* derivative of velocity error, not includes setpoint acceleration */
math::Vector<3> vel_err_d = (sp_move_rate - _vel).emult(_params.pos_p) - (_vel - _vel_prev) / dt;
math::Vector<3> vel_err_d = (_sp_move_rate - _vel).emult(_params.pos_p) - (_vel - _vel_prev) / dt;
_vel_prev = _vel;
/* thrust vector in NED frame */
@@ -60,7 +60,7 @@ enum SETPOINT_TYPE
SETPOINT_TYPE_TAKEOFF, /**< takeoff setpoint */
SETPOINT_TYPE_LAND, /**< land setpoint, altitude must be ignored, descend until landing */
SETPOINT_TYPE_IDLE, /**< do nothing, switch off motors or keep at idle speed (MC) */
SETPOINT_TYPE_OFFBOARD, /**< setpoint set by offboard */
SETPOINT_TYPE_OFFBOARD, /**< setpoint in NED frame (x, y, z, vx, vy, vz) set by offboard */
};
struct position_setpoint_s
@@ -71,9 +71,9 @@ struct position_setpoint_s
float y; /**< local position setpoint in m in NED */
float z; /**< local position setpoint in m in NED */
bool position_valid; /**< true if local position setpoint valid */
float vx; /**< local velocity setpoint in m in NED */
float vy; /**< local velocity setpoint in m in NED */
float vz; /**< local velocity setpoint in m in NED */
float vx; /**< local velocity setpoint in m/s in NED */
float vy; /**< local velocity setpoint in m/s in NED */
float vz; /**< local velocity setpoint in m/s in NED */
bool velocity_valid; /**< true if local velocity setpoint valid */
double lat; /**< latitude, in deg */
double lon; /**< longitude, in deg */