Real-Time Progressive Learning: Accumulate Knowledge from Control with Neural-Network-Based Selective Memory

• URL: http://arxiv.org/abs/2308.04223v2
• Date: Fri, 24 Nov 2023 05:43:36 GMT
• Title: Real-Time Progressive Learning: Accumulate Knowledge from Control with Neural-Network-Based Selective Memory
• Authors: Yiming Fei, Jiangang Li, Yanan Li
• Abstract summary: A radial basis function neural network based learning control scheme named real-time progressive learning (RTPL) is proposed. RTPL learns unknown dynamics of the system with guaranteed stability and closed-loop performance.
• Score: 2.8638167607890836
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Memory, as the basis of learning, determines the storage, update and forgetting of knowledge and further determines the efficiency of learning. Featured with the mechanism of memory, a radial basis function neural network based learning control scheme named real-time progressive learning (RTPL) is proposed to learn the unknown dynamics of the system with guaranteed stability and closed-loop performance. Instead of the Lyapunov-based weight update law of conventional neural network learning control (NNLC), which mainly concentrates on stability and control performance, RTPL employs the selective memory recursive least squares (SMRLS) algorithm to update the weights of the neural network and achieves the following merits: 1) improved learning speed without filtering, 2) robustness to hyperparameter setting of neural networks, 3) good generalization ability, i.e., reuse of learned knowledge in different tasks, and 4) guaranteed learning performance under parameter perturbation. Moreover, RTPL realizes continuous accumulation of knowledge as a result of its reasonably allocated memory while NNLC may gradually forget knowledge that it has learned. Corresponding theoretical analysis and simulation studies demonstrate the effectiveness of RTPL.

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