SYSTEM FOR CONTROLLING SERVO VALVE OF TURBINE

摘要

PURPOSE: A servo valve control system of a turbine is provided to obtain single, dual, and triple control structures only for controlling a servo valve by connecting first, second and third control modules. CONSTITUTION: A servo valve control system of a turbine comprises a field module(450) and first/second/third control modules. The field module comprises three servo valves and three LVDT(Linear Variable Differential Transformer). The three LVDT outputs a LVDT signal which indicates the positions of each servo valve. The first/second/third control modules comprise a CPU(Central Processing Unit) board and a servo valve IO board. The CPU board calculates the location information of each servo valve using the LVDT signal. The servo valve IO board outputs a control signal for controlling the positions of each servo valve using a control algorithm after receiving the location information from the CPU board. [Reference numerals] (452c) Servo valve