摘要:本次設計主要解決鼓風機出口壓力的控制問題，鼓風機是參數(shù)為30到200千帕或壓縮比e為1.3到3的風機。主要通過PLC控制器對靜葉角度的調(diào)節(jié)以及風機的轉速調(diào)節(jié)來控制鼓風機出口的壓力。靜葉的控制是鼓風機控制的關鍵部分，伺服控制器接收來自PLC控制器的指令信號，然后和來自角位移傳感器的角度信號進行比較，所得差值經(jīng)過PID運算處理，處理的結果放大之后產(chǎn)生一個可以驅動電液伺服閥的指令電信號，伺服閥控制動力油，控制伺服油缸使得閥門達到預期的位置，實現(xiàn)調(diào)節(jié)靜葉角度的目的；電機調(diào)速控制也是鼓風機控制的重要組成部分，變頻器接收來自PLC的指令信號，變頻器以達到改變出口壓力的目的。因此性能優(yōu)良的出口壓力控制系統(tǒng)是保證鼓風機正常運行的前提保證。

關鍵詞 鼓風機；出口壓力；靜葉角度；電機調(diào)速

Abstract:The design is mainly to solve the control problem of the blower outlet pressure, the blower is a parameter of 30-200 kPa or compression ratio e is 1.3 to 3 fan. Mainly through the PLC controller vane angle adjustment and the motor speed to achieve the blower outlet pressure control. The control vane blower control is a critical part of the servo controller receives a command signal from the PLC controller, then, and the angle from the angular displacement sensor signal is compared, the difference obtained after the PID operation processing, the processing result of amplification to produce a can drive servo valve command signal, the servo valve control power oil, makes the valve control servo cylinder to achieve the desired position, to achieve the purpose of adjusting the angle vanes; blower motor speed control is also an important part of controlling the inverter receives a command signal from the PLC, frequency converter in order to change the outlet pressure purposes. So excellent outlet pressure control system is to ensure the normal operation of the premise that the blower.

Keywords   blower  outlet pressure   stator blade angle   motor speed