Automatic Clutch Control Based on Estimation of Resistance Torque for AMT
Automatic Clutch Control Based on Estimation of Resistance Torque for AMT
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DOI：
10.1109/tmech.2016.2517088
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发表时间：
2016-12-01
影响因子：
6.4
通讯作者：
Zhu, Zaobei
中科院分区：
文献类型：
--
作者：
Li, Liang;Wang, Xiangyu;Zhu, Zaobei
自动离合器控制在手自一体变速箱系统中至关重要，因为离合器的动作对车辆性能有重大影响，包括安全性、舒适性、可靠性和换档质量。然而，由于脱出力的非线性和离合器磨损的不确定性，离合器控制是一个具有挑战性的问题。为了实现离合器的精确位置控制，本研究提出了一种使用模型预测控制方法的控制方案，并基于阻力矩的估计来校正离合器磨损。首先介绍了一种新颖而详细的离合器模型，主要包括从动盘模型和膜片弹簧模型。接下来，通过对离合器模型的理论分析和实际离合器的实验数据，获得了不同离合器磨损情况下的非线性脱出力特征。然后，设计了一种可靠的离合器执行器，并建立了模型来分析其动力学。最后设计了一种自动离合器控制器，为了将其应用于离合器控制单元进行实时控制，对其进行了简化，减少了在线计算负担。仿真和台架实验结果表明，所提出的控制方案具有令人满意的控制性能。
Automatic clutch control is critical in automated manual transmission systems because clutch actions have a significant influence on the vehicle performance, including safety, comfort, reliability, and shifting quality. However, clutch control is a challenging problem due to nonlinearity of throw-out force and uncertainty in clutch wear. For precise position control of the clutch, this study proposes a control scheme using model predictive control method with the correction of clutch wear based on the estimation of resistance torque. First, a novel and detailed clutch model is introduced, mainly including a driven plate model and a diaphragm spring model. Next, through theoretical analysis of the clutch model and the experimental data of a real clutch, the characteristics of the nonlinear throw-out force are obtained with different clutch wear situations. Then, a reliable clutch actuator is designed, whose model is also built to analyze its dynamics. At last, an automatic clutch controller is designed, and in order to apply it in clutch control unit for real-time control, it is simplified to reduce the online computing burden. The results both of simulations and bench experiments show that the proposed control scheme has a satisfying control performance.