differential: add generic differential rover gazebo airframe

ROMFS/px4fmu_common/init.d-posix/airframes/50000_gz_rover_differential

@@ -0,0 +1,56 @@
+#!/bin/sh
+# @name Generic Differential Rover
+# @type Rover
+# @class Rover
+
+. ${R}etc/init.d/rc.rover_differential_defaults
+
+PX4_SIMULATOR=${PX4_SIMULATOR:=gz}
+PX4_GZ_WORLD=${PX4_GZ_WORLD:=rover}
+PX4_SIM_MODEL=${PX4_SIM_MODEL:=rover_differential}
+
+param set-default SIM_GZ_EN 1 # Gazebo bridge
+
+param set-default NAV_ACC_RAD 0.5
+
+# Differential Parameters
+param set-default RD_WHEEL_TRACK 0.6
+param set-default RD_TRANS_DRV_TRN 0.785398
+param set-default RD_TRANS_TRN_DRV 0.174533
+
+# Rate Control Parameters
+param set-default RO_YAW_RATE_I 0.01
+param set-default RO_YAW_RATE_P 0.25
+param set-default RO_YAW_RATE_LIM 250
+param set-default RO_YAW_ACCEL_LIM 400
+param set-default RO_YAW_DECEL_LIM 800
+param set-default RO_YAW_RATE_CORR 1
+
+# Attitude Control Parameters
+param set-default RO_YAW_P 5
+
+# Velocity Control Parameters
+param set-default RO_ACCEL_LIM 4
+param set-default RO_DECEL_LIM 6
+param set-default RO_JERK_LIM 10
+param set-default RO_MAX_THR_SPEED 2
+param set-default RO_SPEED_LIM 1.8
+param set-default RO_SPEED_I 0.01
+param set-default RO_SPEED_P 0.01
+param set-default RO_SPEED_RED 1
+
+# Pure Pursuit parameters
+param set-default PP_LOOKAHD_GAIN 1
+param set-default PP_LOOKAHD_MAX 10
+param set-default PP_LOOKAHD_MIN 1
+
+# Actuator mapping
+param set-default SIM_GZ_WH_FUNC1 101 # right wheel
+param set-default SIM_GZ_WH_MIN1 80
+param set-default SIM_GZ_WH_MAX1 120
+param set-default SIM_GZ_WH_DIS1 100
+
+param set-default SIM_GZ_WH_FUNC2 102 # left wheel
+param set-default SIM_GZ_WH_MIN2 80
+param set-default SIM_GZ_WH_MAX2 120
+param set-default SIM_GZ_WH_DIS2 100

ROMFS/px4fmu_common/init.d-posix/airframes/CMakeLists.txt

@@ -114,6 +114,8 @@ px4_add_romfs_files(
 	17001_flightgear_tf-g1
 	17002_flightgear_tf-g2
 
+	50000_gz_rover_differential
+
 	71002_gz_spacecraft_2d
 
 	# [22000, 22999] Reserve for custom models