Fuzzy wavelet neural control with improved prescribed performance for MEMS gyroscope subject to input quantization
Autor: | Haonan Si, Wendong Zhang, Xingling Shao |
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Rok vydání: | 2021 |
Předmět: |
0209 industrial biotechnology
Artificial neural network Logic Quantization (signal processing) Vibrating structure gyroscope Gyroscope 02 engineering and technology Fuzzy logic law.invention 020901 industrial engineering & automation Wavelet Artificial Intelligence law Control theory 0202 electrical engineering electronic engineering information engineering Uniform boundedness 020201 artificial intelligence & image processing Actuator Mathematics |
Zdroj: | Fuzzy Sets and Systems. 411:136-154 |
ISSN: | 0165-0114 |
Popis: | In this paper, a fuzzy wavelet neural control scheme with improved prescribed performance is investigated for micro-electro-mechanical system (MEMS) gyroscope in the presence of uncertainties and input quantization. A hysteresis quantizer (HQ) is introduced in the controller design to generate input signal in a finite set, which can greatly reduce the actuator bandwidth without decreasing the control accuracy, and avoid the undesirable chattering occurring universally in other quantizers. To guarantee the output tracking with better prescribed transient behavior, a modified prescribed performance control (MPPC) consisting of asymmetric performance boundaries and an error transformation function is explored, such that arbitrarily small overshoot can be assured without retuning design parameters. Unlike the traditional neural network that suffers from explosion of learning, a fuzzy wavelet neural network (FWNN) based on minimal-learning-parameter (MLP) is designed to identify uncertainties with slight computational burden. A robust quantized control scheme is synthesized to compensate for quantization error and achieve prescribed ultimately uniformly bounded (UUB) tracking. Finally, extensive simulations are presented to verify the effectiveness of proposed control scheme. |
Databáze: | OpenAIRE |
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