| PRINCIPLE TO CLOSED LOOP CONTROL DIFFERENTIAL CYLINDER WITH DOUBLE SPEED VARIABLE PUMPS AND SINGLE LOOP CONTROL SIGNAL |
| |
| 作者姓名： | Neubert T Helduser S |
| |
| 作者单位： | Institute of Fluid Power and Motion Control，Dresden University of Technology，Dresden 01062，Germany，Institute of Fluid Power and Motion Control，Dresden University of Technology，Dresden 01062，Germany |
| |
| 基金项目： | This project is supported by National Natural Science Foundation of China(No.50275102)，National Foundation for Abroad Return People, China (No.2001345). |
| |
| 摘 要： | To control the position of differential cylinder closed loop without using any throttle elements, a new idea that two speed variable pumps are used to compensate the non-symmetric flow of differential cylinder is carried out. According to the leaking property of the system, a speed offset principle is also proposed to eliminate the cavitation and tension caused by the leakage and condensation of oil, which makes the system be in the same state as a valve controlled circuit. This principle is explained theoretically and experimentally. Further the relationship that the pressures in cylinder chambers change with load and leakage, and the relationship between biasing speed and pre-load pressures in cylinder chambers are established. The research has proved that the new system has similar technique features as those of controlled with servo valves, but due to the elimination of all the throttle lose the efficiency of system can be improved greatly.
|
| 关 键 词： | 变量泵 差动缸系统 闭环控制 控制信号 控制原理 |
PRINCIPLE TO CLOSED LOOP CONTROL DIFFERENTIAL CYLINDER WITH DOUBLE SPEED VARIABLE PUMPS AND SINGLE LOOP CONTROL SIGNAL |
| |
| Neubert T,Helduser S.PRINCIPLE TO CLOSED LOOP CONTROL DIFFERENTIAL CYLINDER WITH DOUBLE SPEED VARIABLE PUMPS AND SINGLE LOOP CONTROL SIGNAL[J].Chinese Journal of Mechanical Engineering,2004,17(1):85-88. |
| |
| Authors: | QuanLong NeubertT HelduserS |
| |
| Affiliation: | [1]InstituteofMechatronicsEngineering,TaiyuanUniversityofTechnology,Taiyuan030024,China [2]InstituteofFluidPowerandMotionControl,DresdenUniversityofTechnology,Dresden01062,Germany |
| |
| Abstract: | To control the position of differential cylinder closed loop without using any throttle elements, a new idea that two speed variable pumps are used to compensate the non-symmetric flow of differential cylinder is carried out. According to the leaking property of the system, a speed offset principle is also proposed to eliminate the cavitation and tension caused by the leakage and condensation of oil, which makes the system be in the same state as a valve controlled circuit. This principle is explained theoretically and experimentally. Further the relationship that the pressures in cylinder chambers change with load and leakage, and the relationship between biasing speed and pre-load pressures in cylinder chambers are established. The research has proved that the new system has similar technique features as those of controlled with servo valves, but due to the elimination of all the throttle lose the efficiency of system can be improved greatly. |
| |
| Keywords: | Electro-hydraulic servo control Speed variable pump Differential cylinder system |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
