带随机网络时滞补偿的测功机动态负载模拟*

doi:10.19562/j.chinasae.qcgc.2020.05.020

Abstract

Abstract: A novel dynamometer loading control algorithm is studied with consideration of the effects of control network transmission time-delay in this paper. Firstly based on a front drive electric vehicle, the dynamic coupling model for vehicle and test bench and the mathematical model for the stochastic network-induced time-delay with uniform distribution are constructed. Then, a compensation algorithm for stochastic network-induced time-delay based on predictive control structure is proposed to improve the load emulation performance of dynamometer network control system. Next, the problem of stochastic system tracking control is transformed into a robust stabilization issue by system augmentation, the H_∞ performance is analyzed and the system control gains are obtained through nonlinear optimization. Finally, a simulation on bench test for anti-lock braking control is conducted with a result showing that the scheme proposed can greatly enhance the load emulation accuracy of dynamometer

Key words: electric vehicles, dynamometer, load emulation, network control system, network time-delay

Ma Ruihai, Wang Lifang, Zhang Junzhi, He Chengkun. Dynamic Load Emulation of Dynamometer with Compensation for Stochastic Network Time-delay[J].Automotive Engineering, 2020, 42(5): 700-708.

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Dynamic Load Emulation of Dynamometer with Compensation for Stochastic Network Time-delay

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