Abstract:

It is very hard to attain CVT (continuously variable transmission) clamping force control system appropriate mathematical model for control purposes by means of mathematical analysis. So the necessity of experimental modelling for CVT clamping force control system was presented in order to resolve this issue,and the related AR model was established based on time series analysis, the parametric values of the AR model were estimated with Burg algorithm, and how well the model can predict the system behavior was validated by experiments.The simulation result of the identified model basically agrees with the experimental one of the system in step response. It is proved that the research herein provides a new effective method of electronic control for CVT clamping force control system.

Key words: clamping force control, time series analysis, AR model, parameter identification

摘要：

无级变速传动装置的夹紧力控制系统无法通过数学分析的手段建立精确的数学模型，为了解决这一问题，提出了借助实验建立该系统的数学模型的方法；以时序分析理论为依据，利用系统的输入输出信号建立了该系统的AR模型；然后采用Burg算法辨识出该模型的参数；最后通过实验验证了该模型的精确性，结果表明，所建立的数学模型与实验结果的一致性较好。

关键词: 夹紧力控制, 时序分析, AR模型, 参数辨识