Journal
IEEE-ASME TRANSACTIONS ON MECHATRONICS
Volume 27, Issue 5, Pages 3762-3772Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TMECH.2021.3130907
Keywords
Brake-by-wire (BBW); dynamic decoupling; permanent magnet synchronous motor (PMSM); recursive least square (RLS); thermodynamic model
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Funding
- Automobile and Intelligent Connected Automobile Industry Innovation Project of Anhui Province [JAC2019022505]
- Postdoctoral innovative talent support program [BX20200184]
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A dynamic decoupling control method for permanent magnet synchronous motor (PMSM) of BBW system is proposed in this paper. The results from simulations and experiments show that the method can effectively improve the dynamic response performance and reduce the braking time.
Brake-by-wire (BBW) system is a basic and significant component for intelligent vehicles and electric vehicles. During autonomous emergency braking process, the dynamic response requirement of the BBW actuator motor is very high. Hence, a dynamic decoupling control method is proposed for permanent magnet synchronous motor (PMSM) of BBW system to improve the dynamic response performance. First, a PMSM dynamic model and a thermodynamic model of stator winding are built. Then, the inductance and flux linkage parameters are identified based on recursive least squares and the back electromotive force formula, and an accurate relationship between inductance and flux linkage parameters and motor temperature is obtained. Finally, a dynamic decoupling control method based on the intensive binary dichotomy table method is designed. The results both of simulations and experiments show that the proposed method shorten the boost time by 18.30%, thereby reducing the braking time by 9.63%.
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