力士乐VSP伺服泵的应用与控制原理

大海无量

力士乐VSP伺服泵的应用与控制原理

Sytronix SvP systems
Sytronix SvP features key functions:
ff High efficiency servo motors with a level of standard
and direct pump mount versions
ff High dynamics and control accuracy
ff Broad range of control functionality

Functionality
Using an internal gear pump, type PGH or PGM, the required
flow is controlled directly by motor speed. The pumps are
optimized for variable-speed operation and achieve a high
overall efficiency due to low leakage, and operate with
minimum noise.
In operation, sensors measure pressure, actuator position1)
and the servo motor speed, which are used by the servo
controller. Command values, which can be set by the machine
control, are compared by the IndraDrive, which adjusts the
pump drive speed to match the system requirements.

游勇

没刹车，闭环位置控制精确度不如阀控系统。

大海无量

最近在研究一款JCO钢管成型设备的液压控制，不知是否有熟悉工艺及控制原理的前辈指点一二，其压下柱塞缸就是采用伺服电机带动力士乐的HA4VSO355HS4M/30W-PZB25N00-S1953泵来控制，压下机构上有位置传感器。

大海无量

部分原理图如下，其中活塞缸的下行回路就比较令人费解。