Control performance and energy saving of multi-level pressure switching control system based on independent metering control

作     者：曹晓明 Yao Jing Sha Tong Wang Pei Cao Xiaoming;Yao Jing;Sha Tong;Wang Pei

作者机构：College of Mechanical EngineeringYanshan UniversityQinhuangdao 066004P.R.China School of Mechanical EngineeringNanjing Institute of TechnologyNanjing 210000P.R.China 

出 版 物：《High Technology Letters》 (高技术通讯（英文版）)

年 卷 期：2020年第26卷第2期

页      面：224-234页

核心收录：

学科分类：0710[理学-生物学] 0831[工学-生物医学工程（可授工学、理学、医学学位）] 0810[工学-信息与通信工程] 1205[管理学-图书情报与档案管理] 08[工学] 0807[工学-动力工程及工程热物理] 0805[工学-材料科学与工程（可授工学、理学学位）] 0802[工学-机械工程] 0836[工学-生物工程] 0811[工学-控制科学与工程] 0812[工学-计算机科学与技术（可授工学、理学学位）] 0702[理学-物理学] 

基　　金：the National Natural Science Foundation of China(No.51575471) the Natural Science Foundation of Hebei Province(No.E2018203028). 

主　　题：multi-level pressure independent metering control displacement control energy saving hydraulic switching system 

摘      要：Aiming at the problem of large energy consumption in hydraulic control system with large load and variable working conditions,based on the multi-level pressure switching control system(MPSCS),a multi-level pressure switching control system based on independent metering control is proposed combined with the independent metering control technology.The configuration principle of the system is given,the mathematical model of this system is established,and the control strategy of the system under 4 different working quadrants is put forward.Finally,the control performance and energy saving characteristics of the system are tested.The test results show that the switching of high and low pressure power supply has a certain effect on the response of step position and ramp position under impedance working condition.The displacement curves show slow climbing or abrupt change of ramp position,and the position accuracy is less than 1 mm.The multi-level pressure switching control system based on independent metering control can recover and store energy under the transcendence working conditions.The control accuracy is about 1 mm,and the energy recovery rate is about 70%~80%.