伺服电机驱动定量泵液压源系统的恒功率特性  

Study on Constant Power Characteristics of Hydraulic Source System Driven by Servo Motor Fixed-displacement Pump

作　　者：田晴晴[1] 谷立臣[1] 贾永峰[1,2] 

机构地区：[1]西安建筑科技大学机电工程学院,西安710055 [2]陕西交通职业技术学院,西安710018

出　　处：《机械设计与研究》2014年第3期116-120,共5页Machine Design And Research

基　　金：国家自然科学基金资助项目(50575168);陕西省教育厅自然科学基金资助项目(12JK0682)

摘　　要：在定量泵液压系统中,将变频技术与恒功率控制相结合,利用永磁同步伺服电动机、交流伺服驱动器和齿轮泵构成一种除恒功率变量泵之外的新型的恒功率液压源系统,根据负载压力的变化,通过变频调速调节电机转速,以达到调整系统输出流量的目的,最终完成恒功率控制。该液压源系统具有结构简单、成本较低等特点,并将电信号传输速度快和恒功率控制的节能等优点集于一体。实验结果表明液压源系统具有较好的恒功率特性。In the hydraulic systems with fixed displacement pump, the permanent magnet synchronous servo motor, AC servo drive and gear pump are used to build a new type of constant power hydraulic source system in addition to the constant power variable pump system, which combines frequency conversion technology with the constant power control technology. According to the change of the toad pressure, the constant power hydraulic system adjusts the output flow of the pump automatically to achieve the purpose of the constant power control by adjusting the motor speed based on frequency conversion technology. The hydraulic system has the characteristics of simple structure and low cost, and mixes merits of good transmission speed of electrical signal and energy saving of constant power control. The experimental results show that the hydraulic source system has a good constant power characteristic.

关 键 词：定量泵液压系统 伺服电动机 变频调速 恒功率 液压动力源 

分 类 号：TH137.31[机械工程—机械制造及自动化] TH137.9