Since valve locator is a system, the key work of this paper lies in the control part of valve locator.
由于阀门定位器是一个系统，本文的工作重点在于阀门定位器的控制部分。
The system consists of feedwater pump control, adjusting valve level control, safety and alarm devices.
该系统包括给水泵控制、调节阀阀位控制以及安全保护和报警。
At first, it studied the plant model of position and force system about valve control unsymmetrical hydraulic ram.
首先，建立了阀控非对称缸位置控制系统与力控制系统的数学模型。
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