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本文就最佳响应问题介绍一个用作高速、准确定位器的电液伺服机构的实验性研究和计算机仿真。该伺服机构由一个用两台不同的伺服阀控制的直线运动油缸(Linearactuator)、一个几公斤的惯性负载、探测器和电子线路组成。为得到快速和准确的响应采用了三种模式:加速、减速和最终的定位控制。在适当的稳定条件下用实验办法得到从加速到增速的最佳切换曲线。于是在存取距离(access distance)为0—5厘米的范围内实现了20—30毫秒的定位时间和±5微米的准确度。
This paper presents an experimental study and computer simulation of the electro-hydraulic servo for high speed and accurate positioner on the best response. The servo consists of a linear actuator controlled by two different servovalves, a load of kilograms of inertia, a detector and electronics. Three modes are available for fast and accurate response: acceleration, deceleration and final positioning control. Under the proper steady conditions, the optimal switching curve from acceleration to acceleration is obtained experimentally. Thus, a positioning time of 20-30 ms and an accuracy of ± 5 μm were achieved within an access distance of 0-5 cm.