液压变压器控马达系统特性研究  

Characteristics of Hydraulic Transformer Controlled Hydraulic Motor System

作　　者：赵红梅[1] 吴维[1] 胡纪滨[1] 苑士华[1] 狄崇峰 

机构地区：[1]北京理工大学车辆传动重点实验室,北京100081

出　　处：《北京理工大学学报》2017年第5期441-445,共5页Transactions of Beijing Institute of Technology

基　　金：国家自然科学基金资助项目(51305034)

摘　　要：根据液压变压器控马达系统工作原理和系统动态方程,利用线性化理论,建立并简化了系统传递函数.理论分析表明,液压变压器控马达系统同时具有最小相位系统和非最小相位系统的性质.对于等配流槽液压变压器,当液压变压器控制角小于30°时,系统为最小相位系统;当液压变压器控制角大于30°时,系统为非最小相位系统.仿真结果表明,当液压变压器控制角大于30°时,系统的阶跃响应表现为负响应,系统具备非最小相位系统的特性.通过实验研究,进一步证明了理论分析和仿真分析的结果.研究表明,液压变压器控马达系统不适用于高精度转矩转速控制系统.To the hydraulic transformer controlled hydraulic motor system,the system transfer function was built based on the system principle,dynamic equation and the linear theory.Theoretical analyzing indicates that the hydraulic transformer controlled hydraulic motor system has minimum phase system characteristic and non-minimum phase system characteristic simultaneously.For the hydraulic transformer with equivalent port, when the hydraulic transformer control angle is less than 30°,the system is the minimum phase system,and when the hydraulic transformer control angle is more than 30°,the system is the non-minimum phase system.Based the hydraulic transformer controlled hydraulic motor system dynamic equations,the simulation result proved that when the hydraulic transformer control angle is more than 30°,the step response of system shows negative response and the characteristics of the non-minimum phase system.The experiment studies validate the results of the theoretical analysis and simulate analysis further.The research indicates that the hydraulic transformer controlled hydraulic motor system is not suitable for the high precision torque and speed control system.

关 键 词：液压变压器控马达系统 液压变压器控制角 最小相位系统 负响应 

分 类 号：TH137[机械工程—机械制造及自动化]