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浙江大学学报(工学版)
浙江大学学报(工学版)
机械工程     
比例放大器驱动电路特性分析及控制器设计
徐兵, 苏琦, 张军辉, 陆振宇
浙江大学 流体动力与机电系统国家重点实验室,浙江 杭州 310027
Analysis for drive circuit and improved current controller for proportional amplifier
XU Bing, SU Qi, ZHANG Jun-hui, LU Zhen-yu
State Key Laboratory of Fluid Power and Mechatronic Systems, Zhejiang University, Hangzhou 310027, China
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摘要：

由于“反接卸荷”式驱动电路电流的非线性特性,当采用传统比例积分控制器进行电磁铁电流闭环控制时存在零位滞后现象,为了解决这一问题,建立“反接卸荷”式驱动电路的非线性数学模型.通过实验验证了该模型的有效性,分析非线性对电流控制器的设计影响.基于分析结论,提出新型的电流控制器设计方案.该方案的主要特征是通过采用死区跨越和抗饱和控制思路,使控制器快速跨越驱动电路的非线性区域.试验结果表明,该控制器能够有效地消除零位滞后现象.
Abstract:

The lager tracking error will appear when tracking a reference input near zero by the classical proportion-integrated controller because the current character of the inverse discharging drive circuit is nonlinear. A mathematical model was proposed to carefully describe the piecewise nonlinearities in the inverse discharging type drive circuit in order to solve the problem. A test setup was built for the model validation. A novel current controller was designed based on the analysis results. The innovation of this controller includes the dead zone compensation and the anti-wind up design, which is proposed to quickly skip the nonlinear part of the drive circuit. The experimental results show that the controller can effectively eliminate the zero lag.
出版日期: 2017-04-25
CLC:  TH 137  
基金资助:

国家自然科学基金-浙江省两化融合重点资助项目（U1509204）；2015年工业转型升级强基工程资助项目（TC150B5C0-29）.
作者简介: 徐兵(1971—),男,教授,博导,从事流体传动及控制和机械电子工程的研究. ORCID: 0000-0003-0236-7896. E-mail: bxu@zju.edu.cn
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徐兵, 苏琦, 张军辉, 陆振宇. 比例放大器驱动电路特性分析及控制器设计[J]. 浙江大学学报(工学版), 10.3785/j.issn.1008-973X.2017.04.022.

XU Bing, SU Qi, ZHANG Jun-hui, LU Zhen-yu. Analysis for drive circuit and improved current controller for proportional amplifier. JOURNAL OF ZHEJIANG UNIVERSITY (ENGINEERING SCIENCE), 10.3785/j.issn.1008-973X.2017.04.022.

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