ABS and TPMS is a technology measure enhanced automobile active safety performance. Nowadays the ABS system and the TPMS system are mutually independent and ABS system has standard configuration, while TPMS is increas...
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ISBN:
(纸本)9780769539300
ABS and TPMS is a technology measure enhanced automobile active safety performance. Nowadays the ABS system and the TPMS system are mutually independent and ABS system has standard configuration, while TPMS is increasingly increased and rising, so the article proposed a merged thought between the two kind of systems, which is essential to develop automobile electronic control systems integration. sliding mode variable structure control algorithm used is to realize two kind of functions at the same time, and using SIMULINK tool simulate system feasibly. The simulation results showed that the Asian thought proposed in this article guaranteed to control slipping rate range from 10% to 30% and monitored tire pressure value real-time, which explained system feasibility, and saved cost simultaneously.
To address the low efficiency of compressors driven by rotating motors in refrigeration equipment, an electromagnetic linear actuator directly driven compressor is designed. A multi-field coupling mathematical model o...
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To address the low efficiency of compressors driven by rotating motors in refrigeration equipment, an electromagnetic linear actuator directly driven compressor is designed. A multi-field coupling mathematical model of machinery, electricity, and magnetism is established through theoretical analysis of the working mechanism and structure of the electromagnetic linear actuator directly driven compressor. Based on MATLAB/Simulink, a dual-loop Proportional-Integral-Derivative (PID) controlalgorithm and a sliding mode variable structure control algorithm with a nonlinear extended state observer are designed and simulated, enabling the function of the linear compressor to change its stroke and frequency according to different working conditions. Subsequently, a real-time simulation test platform based on dSPACE is built for the semi-physical real-time simulation tests. The test results demonstrate that the controlalgorithm can meet the variable working conditions of the compressor, and the test results are consistent with the simulation results. Moreover, the accuracy of the sliding mode variable structure control algorithm with a state observer is 2.5%, which is higher than the 5% accuracy of PID, meeting the performance requirements of the compressor.
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