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feat: Robust MPPI (R-MPPI) — 20번째 MPPI 변형#17

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Geonhee-LEE merged 2 commits intomainfrom
feature/robust-mppi
Mar 18, 2026
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feat: Robust MPPI (R-MPPI) — 20번째 MPPI 변형#17
Geonhee-LEE merged 2 commits intomainfrom
feature/robust-mppi

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Summary

  • Robust MPPI (R-MPPI) 구현: 피드백을 MPPI 샘플링 루프 내부에 통합하여 외란 하에서도 추적 가능한 제어 학습
  • Tube-MPPI의 분리된 2계층 대신, MPPI가 외란 보상 능력을 직접 인지 (덜 보수적)
  • RobustMPPIController + RobustMPPIParams (3 외란 모드: gaussian/adversarial/none)
  • 28 유닛 테스트, 4-Way 벤치마크 (4 시나리오: mild_noise/strong_noise/model_mismatch/obstacle_noise)
  • 문서: MPPI_THEORY §19, TUTORIALS §9.10, README, CLAUDE.md

Closes #16

Reference: Gandhi et al., RAL 2021, arXiv:2102.09027

Test plan

  • python -m pytest tests/test_robust_mppi.py -v — 28/28 passed
  • python -m pytest tests/ -v -q — 1323 passed (기존 무영향)
  • PYTHONPATH=. python examples/comparison/robust_mppi_benchmark.py --all-scenarios — 4 시나리오 정상
  • PYTHONPATH=. python examples/comparison/robust_mppi_benchmark.py --scenario mild_noise — 플롯 생성 확인

🤖 Generated with Claude Code

Geonhee-LEE and others added 2 commits March 18, 2026 22:55
Discrete Barrier States MPPI (arXiv:2502.14387) 구현.
밀집 장애물/좁은 통로에서 가중치 퇴화 없이 안전한 궤적 생성.

- DBaSMPPIController: log barrier + barrier state dynamics + adaptive σ
- DBaSMPPIParams: obstacles, walls, barrier_weight, gamma, exploration_coeff
- 28 tests (1295 total), 4-Way 벤치마크 (4 시나리오: dense/dynamic/narrow/noisy)
- 문서: MPPI_THEORY §18, TUTORIALS §9.9, README 19종 업데이트

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Tube-MPPI의 분리된 2계층(MPPI→피드백) 대신, 피드백을 MPPI 샘플링 루프 내부에
통합하여 외란 하에서도 추적 가능한 제어를 학습하는 R-MPPI 구현.

- RobustMPPIController: 명목+실제 궤적 동시 rollout, 실제 비용 계산
- RobustMPPIParams: disturbance_std, feedback_gain_scale, disturbance_mode 등
- 3 외란 모드: gaussian, adversarial (CVaR-style), none
- 28 tests, 4-Way 벤치마크 (Vanilla vs Tube vs Risk-Aware vs Robust, 4 시나리오)
- 문서: MPPI_THEORY §19, TUTORIALS §9.10, README/CLAUDE.md 업데이트

Reference: Gandhi et al., RAL 2021, arXiv:2102.09027

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
@Geonhee-LEE Geonhee-LEE merged commit b654ed0 into main Mar 18, 2026
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@Geonhee-LEE Geonhee-LEE deleted the feature/robust-mppi branch March 18, 2026 14:50
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feat: Robust MPPI (R-MPPI) — 20번째 MPPI 변형

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