feat(#142): terrain adaptation — surface detection + dynamic speed/PID/bias #154

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sl-jetson merged 1 commits from sl-controls/issue-142-terrain into main 2026-03-02 10:07:39 -05:00

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Author SHA1 Message Date
fb3e9f1bf1 feat(#142): terrain adaptation — surface detection, speed/PID/bias adaptation
Two new ROS2 packages implementing Issue #142:

saltybot_terrain_msgs (ament_cmake)
- Terrain.msg: stamp, surface_type, roughness, incline_rad, grip, slip_ratio, speed_scale

saltybot_terrain_adaptation (ament_python, 50 Hz)
- terrain_analyzer.py: IMU vibration RMS → roughness [0,1] + surface classification
  (smooth/tile/carpet/grass/gravel) with hysteresis-protected switching
- incline_detector.py: quaternion pitch → first-order LPF → incline_rad; motor_bias()
- slip_detector.py: cmd_vel vs odom → slip_ratio with EMA smoothing + speed gate
- terrain_adapter.py: TerrainState, TerrainAdapter (speed_scale, pid_scales, motor_bias),
  TerrainHistory (rolling deque, JSON type-change log)
- terrain_adaptation_node.py: 50 Hz node; IMU watchdog; publishes terrain JSON + typed msg,
  speed_scale, pid_scales (JSON), motor_bias, terrain_history (on type change)
- config/terrain_params.yaml, launch/terrain_adaptation.launch.py

Tests: 60/60 passing (TerrainAnalyzer, SlipDetector, InclineDetector, TerrainAdapter,
TerrainHistory all covered)

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
2026-03-02 10:04:36 -05:00