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authorLorenz Meier <lm@inf.ethz.ch>2014-07-29 11:11:58 +0200
committerLorenz Meier <lm@inf.ethz.ch>2014-07-29 11:11:58 +0200
commit129c93f22f0717d9d85910de87fecece9fabbc79 (patch)
tree3efa4c56e752fdccae34675e462fb114c2b7a649 /src/modules/fw_pos_control_l1/fw_pos_control_l1_params.c
parent628b735bc1232018ffb34213109b94239a763228 (diff)
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Revert "Remove all unused TECS parameters"
This reverts commit ce78b399691d43bd150c0a5928f08c98076a3892. Conflicts: src/modules/fw_pos_control_l1/fw_pos_control_l1_main.cpp src/modules/fw_pos_control_l1/fw_pos_control_l1_params.c
Diffstat (limited to 'src/modules/fw_pos_control_l1/fw_pos_control_l1_params.c')
-rw-r--r--src/modules/fw_pos_control_l1/fw_pos_control_l1_params.c176
1 files changed, 176 insertions, 0 deletions
diff --git a/src/modules/fw_pos_control_l1/fw_pos_control_l1_params.c b/src/modules/fw_pos_control_l1/fw_pos_control_l1_params.c
index 27039ff51..52128e1b7 100644
--- a/src/modules/fw_pos_control_l1/fw_pos_control_l1_params.c
+++ b/src/modules/fw_pos_control_l1/fw_pos_control_l1_params.c
@@ -155,6 +155,182 @@ PARAM_DEFINE_FLOAT(FW_THR_MIN, 0.0f);
PARAM_DEFINE_FLOAT(FW_THR_LND_MAX, 1.0f);
/**
+ * Maximum climb rate
+ *
+ * This is the best climb rate that the aircraft can achieve with
+ * the throttle set to THR_MAX and the airspeed set to the
+ * default value. For electric aircraft make sure this number can be
+ * achieved towards the end of flight when the battery voltage has reduced.
+ * The setting of this parameter can be checked by commanding a positive
+ * altitude change of 100m in loiter, RTL or guided mode. If the throttle
+ * required to climb is close to THR_MAX and the aircraft is maintaining
+ * airspeed, then this parameter is set correctly. If the airspeed starts
+ * to reduce, then the parameter is set to high, and if the throttle
+ * demand required to climb and maintain speed is noticeably less than
+ * FW_THR_MAX, then either FW_T_CLMB_MAX should be increased or
+ * FW_THR_MAX reduced.
+ *
+ * @group L1 Control
+ */
+PARAM_DEFINE_FLOAT(FW_T_CLMB_MAX, 5.0f);
+
+/**
+ * Minimum descent rate
+ *
+ * This is the sink rate of the aircraft with the throttle
+ * set to THR_MIN and flown at the same airspeed as used
+ * to measure FW_T_CLMB_MAX.
+ *
+ * @group L1 Control
+ */
+PARAM_DEFINE_FLOAT(FW_T_SINK_MIN, 2.0f);
+
+/**
+ * Maximum descent rate
+ *
+ * This sets the maximum descent rate that the controller will use.
+ * If this value is too large, the aircraft can over-speed on descent.
+ * This should be set to a value that can be achieved without
+ * exceeding the lower pitch angle limit and without over-speeding
+ * the aircraft.
+ *
+ * @group L1 Control
+ */
+PARAM_DEFINE_FLOAT(FW_T_SINK_MAX, 5.0f);
+
+/**
+ * TECS time constant
+ *
+ * This is the time constant of the TECS control algorithm (in seconds).
+ * Smaller values make it faster to respond, larger values make it slower
+ * to respond.
+ *
+ * @group L1 Control
+ */
+PARAM_DEFINE_FLOAT(FW_T_TIME_CONST, 5.0f);
+
+/**
+ * Throttle damping factor
+ *
+ * This is the damping gain for the throttle demand loop.
+ * Increase to add damping to correct for oscillations in speed and height.
+ *
+ * @group L1 Control
+ */
+PARAM_DEFINE_FLOAT(FW_T_THR_DAMP, 0.5f);
+
+/**
+ * Integrator gain
+ *
+ * This is the integrator gain on the control loop.
+ * Increasing this gain increases the speed at which speed
+ * and height offsets are trimmed out, but reduces damping and
+ * increases overshoot.
+ *
+ * @group L1 Control
+ */
+PARAM_DEFINE_FLOAT(FW_T_INTEG_GAIN, 0.1f);
+
+/**
+ * Maximum vertical acceleration
+ *
+ * This is the maximum vertical acceleration (in metres/second square)
+ * either up or down that the controller will use to correct speed
+ * or height errors. The default value of 7 m/s/s (equivalent to +- 0.7 g)
+ * allows for reasonably aggressive pitch changes if required to recover
+ * from under-speed conditions.
+ *
+ * @group L1 Control
+ */
+PARAM_DEFINE_FLOAT(FW_T_VERT_ACC, 7.0f);
+
+/**
+ * Complementary filter "omega" parameter for height
+ *
+ * This is the cross-over frequency (in radians/second) of the complementary
+ * filter used to fuse vertical acceleration and barometric height to obtain
+ * an estimate of height rate and height. Increasing this frequency weights
+ * the solution more towards use of the barometer, whilst reducing it weights
+ * the solution more towards use of the accelerometer data.
+ *
+ * @group L1 Control
+ */
+PARAM_DEFINE_FLOAT(FW_T_HGT_OMEGA, 3.0f);
+
+/**
+ * Complementary filter "omega" parameter for speed
+ *
+ * This is the cross-over frequency (in radians/second) of the complementary
+ * filter used to fuse longitudinal acceleration and airspeed to obtain an
+ * improved airspeed estimate. Increasing this frequency weights the solution
+ * more towards use of the arispeed sensor, whilst reducing it weights the
+ * solution more towards use of the accelerometer data.
+ *
+ * @group L1 Control
+ */
+PARAM_DEFINE_FLOAT(FW_T_SPD_OMEGA, 2.0f);
+
+/**
+ * Roll -> Throttle feedforward
+ *
+ * Increasing this gain turn increases the amount of throttle that will
+ * be used to compensate for the additional drag created by turning.
+ * Ideally this should be set to approximately 10 x the extra sink rate
+ * in m/s created by a 45 degree bank turn. Increase this gain if
+ * the aircraft initially loses energy in turns and reduce if the
+ * aircraft initially gains energy in turns. Efficient high aspect-ratio
+ * aircraft (eg powered sailplanes) can use a lower value, whereas
+ * inefficient low aspect-ratio models (eg delta wings) can use a higher value.
+ *
+ * @group L1 Control
+ */
+PARAM_DEFINE_FLOAT(FW_T_RLL2THR, 10.0f);
+
+/**
+ * Speed <--> Altitude priority
+ *
+ * This parameter adjusts the amount of weighting that the pitch control
+ * applies to speed vs height errors. Setting it to 0.0 will cause the
+ * pitch control to control height and ignore speed errors. This will
+ * normally improve height accuracy but give larger airspeed errors.
+ * Setting it to 2.0 will cause the pitch control loop to control speed
+ * and ignore height errors. This will normally reduce airspeed errors,
+ * but give larger height errors. The default value of 1.0 allows the pitch
+ * control to simultaneously control height and speed.
+ * Note to Glider Pilots - set this parameter to 2.0 (The glider will
+ * adjust its pitch angle to maintain airspeed, ignoring changes in height).
+ *
+ * @group L1 Control
+ */
+PARAM_DEFINE_FLOAT(FW_T_SPDWEIGHT, 1.0f);
+
+/**
+ * Pitch damping factor
+ *
+ * This is the damping gain for the pitch demand loop. Increase to add
+ * damping to correct for oscillations in height. The default value of 0.0
+ * will work well provided the pitch to servo controller has been tuned
+ * properly.
+ *
+ * @group L1 Control
+ */
+PARAM_DEFINE_FLOAT(FW_T_PTCH_DAMP, 0.0f);
+
+/**
+ * Height rate P factor
+ *
+ * @group L1 Control
+ */
+PARAM_DEFINE_FLOAT(FW_T_HRATE_P, 0.05f);
+
+/**
+ * Speed rate P factor
+ *
+ * @group L1 Control
+ */
+PARAM_DEFINE_FLOAT(FW_T_SRATE_P, 0.05f);
+
+/**
* Landing slope angle
*
* @group L1 Control