文章基本信息

标题：Improved Decoupling Control for a Powershift Automatic Mechanical Transmission Employing a Model-Based PID Parameter Autotuning Method
其他标题：Improved Decoupling Control for a Powershift Automatic Mechanical Transmission Employing a Model-Based PID Parameter Autotuning Method
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作者：Zhiqiang Sun ; Kazushi Sanada ; Bingzhao Gao 等
期刊名称：Actuators
电子版ISSN：2076-0825
出版年度：2020
卷号：9
期号：3
页码：54
DOI：10.3390/act9030054
出版社：MDPI Publishing
摘要：Automatic mechanical transmission (AMT) with a gearshift assistant mechanism is a novel transmission architect concept aiming to improve the torque interruption and driveline jerk of AMT. During the shifting process, the shifting performance deteriorates as the varying road gradient and the friction coefficient worsen the coupling effect between the motor torque and the clutch friction torque. This paper focuses on improving the controller’s robustness of AMT with a gearshift assistant mechanism against the perturbed parameters during the stage of torque gap filling. In this paper, a detailed powertrain simulation model was presented. Based on a decoupling controller and a disturbance compensator, proportional-integral-differential (PID) controllers are applied to enhance the robustness and the decoupling effect. The PID parameters are automatically tuned by employing the Nelder-Mead method. In the tuning process, a cost function was established to demonstrate the outputs’ reference tracking performance, and the PID parameters are tuned by minimizing the cost function. Finally, the tuned parameters are stored in PID maps to make them adjustable online. Simulation results show that with the perturbed parameters well estimated, the upshift process was successful and the torque filling effect was also acceptable. The proposed transmission is a promising structure for industry applications.
关键词：power shift AMT; gearshift assistant mechanism; Nelder-Mead; multivariable PID controller autotuning; hybridized AMT power shift AMT ; gearshift assistant mechanism ; Nelder-Mead ; multivariable PID controller autotuning ; hybridized AMT