47.通过绝对编码器实现阀门控制程序的优化

47.通过绝对编码器实现阀门控制程序的优化
Process Flow Optimization with
Absolute Encoders in Valve Control
Chew Chim Lai & Chuah Seng Yee
Avago Technologies, Malaysia

White Paper
Abstract Conventional Control Valve Mechanism
In process flow control, there are many factors affecting There are various types of valves currently available,
variability but the greatest contributor is the control such as gate, globe, pinch, diaphragm, needle, plug,
valve’s performance. Issues associated with control ball and butterfly valves. Gate, plug and ball valves are
valves, such as dead band, actuator/positioner’s design, used primarily for turning on and off liquid or gas flows,
response time, valve type and sizing, all have huge although in certain app