输出为恒功率特性的液压控制系统设计  

Design of Hydraulic Control System with Constant Power Characteristic Output

作　　者：朱建公[1] 文代明[1] 

机构地区：[1]西南科技大学制造学院

出　　处：《工程机械》2005年第8期50-52,104,共3页Construction Machinery and Equipment

摘　　要：介绍一种利用三极管的“集-射极”之间的等效电阻与系统压力信号构成一反相比例放大电路,将液压系统负载压力信号转换为控制系统输出流量的信号,使系统压力和流量之间满足双曲线函数关系来实现恒功率控制。同时在控制电路设计上引入流量补偿反馈的恒功率控制,并分析了系统的工作原理及输出特性。A reverse phase proportional amplifying circuit is constructed using equivalent resistance between collector and emitter of transistors and system pressure signals. Load pressure signals of hydraulic system are converted into output flow rate signals of the control system. Constant power control is realized by making the relationship between system pressure and flow in a hyperbolic function. At the same time, constant power control of flow compensating feedback is adopted in the design of control circuit. Work principle and output characteristics of the system are analyzed.

关 键 词：液压控制系统 系统设计 工作原理 输出特性 控制电路 

分 类 号：TH137[机械工程—机械制造及自动化]