Measurement and Control ( IF 2 ) Pub Date : 2021-04-02 , DOI: 10.1177/00202940211003926 Hong Wang 1 , Mingqin Zhang 1 , Ruijun Zhang 1 , Lixin Liu 2
In order to effectively suppress horizontal vibration of the ultra-high-speed elevator car system. Firstly, considering the nonlinearity of guide shoe, parameter uncertainties, and uncertain external disturbances of the elevator car system, a more practical active control model for horizontal vibration of the 4-DOF ultra-high-speed elevator car system is constructed and the rationality of the established model is verified by real elevator experiment. Secondly, a predictive sliding mode controller based on adaptive fuzzy (PSMC-AF) is proposed to reduce the horizontal vibration of the car system, the predictive sliding mode control law is achieved by optimizing the predictive sliding mode performance index. Simultaneously, in order to decrease the influence of uncertainty of the car system, a fuzzy logic system (FLS) is designed to approximate the compound uncertain disturbance term (CUDT) on-line. Furthermore, the continuous smooth hyperbolic tangent function (HTF) is introduced into the sliding mode switching term to compensate the fuzzy approximation error. The adaptive laws are designed to estimate the error gain and slope parameter, so as to increase the robustness of the system. Finally, numerical simulations are conducted on some representative guide rail excitations and the results are compared to the existing solution and passive system. The analysis has confirmed the effectiveness and robustness of the proposed control method.
中文翻译:
基于自适应模糊的超高速电梯轿厢系统水平振动预测滑模控制策略研究
为了有效抑制超高速电梯轿厢系统的水平振动。首先,考虑到导靴的非线性,参数不确定性和不确定的外部干扰,建立了一种更实用的四自由度超高速电梯轿厢系统水平振动主动控制模型,并对其合理性进行了研究。通过实际的电梯实验验证了所建立的模型。其次,提出了一种基于自适应模糊(PSMC-AF)的预测滑模控制器,以减少汽车系统的水平振动,通过优化预测滑模性能指标来实现预测滑模控制律。同时,为了减少汽车系统不确定性的影响,设计了模糊逻辑系统(FLS)来在线近似复合不确定干扰项(CUDT)。此外,将连续光滑双曲正切函数(HTF)引入滑模切换项以补偿模糊逼近误差。自适应定律旨在估计误差增益和斜率参数,从而提高系统的鲁棒性。最后,对一些有代表性的导轨激励进行了数值模拟,并将结果与现有解决方案和无源系统进行了比较。分析已经证实了所提出的控制方法的有效性和鲁棒性。将连续光滑双曲正切函数(HTF)引入滑模切换项以补偿模糊逼近误差。自适应定律旨在估计误差增益和斜率参数,从而提高系统的鲁棒性。最后,对一些有代表性的导轨激励进行了数值模拟,并将结果与现有解决方案和无源系统进行了比较。分析已经证实了所提出的控制方法的有效性和鲁棒性。将连续光滑双曲正切函数(HTF)引入滑模切换项以补偿模糊逼近误差。自适应定律旨在估计误差增益和斜率参数,从而提高系统的鲁棒性。最后,对一些有代表性的导轨激励进行了数值模拟,并将结果与现有解决方案和无源系统进行了比较。分析已经证实了所提出的控制方法的有效性和鲁棒性。