Learning-Based Approximate Nonlinear Model Predictive Control Motion Cueing

• URL: http://arxiv.org/abs/2504.00469v2
• Date: Wed, 09 Apr 2025 23:09:21 GMT
• Title: Learning-Based Approximate Nonlinear Model Predictive Control Motion Cueing
• Authors: Camilo Gonzalez Arango, Houshyar Asadi, Mohammad Reza Chalak Qazani, Chee Peng Lim,
• Abstract summary: Motion Cueing Algorithms encode the movement of simulated vehicles into movement that can be reproduced with a motion simulator.<n>This paper introduces a novel learning-based MCA for serial robot-based motion simulators.<n>By shifting the computational burden to offline training, the new algorithm enables real-time operation at high control rates.
• Score: 11.313274230727549
• License: http://creativecommons.org/licenses/by-nc-nd/4.0/
• Abstract: Motion Cueing Algorithms (MCAs) encode the movement of simulated vehicles into movement that can be reproduced with a motion simulator to provide a realistic driving experience within the capabilities of the machine. This paper introduces a novel learning-based MCA for serial robot-based motion simulators. Building on the differentiable predictive control framework, the proposed method merges the advantages of Nonlinear Model Predictive Control (NMPC) - notably nonlinear constraint handling and accurate kinematic modeling - with the computational efficiency of machine learning. By shifting the computational burden to offline training, the new algorithm enables real-time operation at high control rates, thus overcoming the key challenge associated with NMPC-based motion cueing. The proposed MCA incorporates a nonlinear joint-space plant model and a policy network trained to mimic NMPC behavior while accounting for joint acceleration, velocity, and position limits. Simulation experiments across multiple motion cueing scenarios showed that the proposed algorithm performed on par with a state-of-the-art NMPC-based alternative in terms of motion cueing quality as quantified by the RMSE and correlation coefficient with respect to reference signals. However, the proposed algorithm was on average 400 times faster than the NMPC baseline. In addition, the algorithm successfully generalized to unseen operating conditions, including motion cueing scenarios on a different vehicle and real-time physics-based simulations.

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