基于DMC-PID控制的催化剂温控系统设计

通过对动态矩阵控制(DMC)算法和传统PID控制的分析,提出一个基于DMC-PID串级控制的催化剂温控系统。仿真结果表明:DMC-PID控制效果优于PID-PID控制;电流副回路采用PID控制,能够快速有效调节电流进而控制燃烧炉内温度;温度主回路采用DMC控制,克服了传统温控系统存在的超调量大、时延及滞后性等问题,避免了多种不可测扰动的影响。

Design of Catalyst Temperature Control System Based on DMC-PID Control

Through analyzing dynamic matrix control (DMC) and traditional PID control,a DMC-PID cascade control-based catalyst temperature control system was proposed.The simulation results show that,the DMC-PID cascade control outperforms PID control;and adopting PID control in the current's minor loop can rapidly and effectively adjust the current to control temperature within the combustion furnace;and adopting DMC con-trol in temperature's main loop can eradicate large overshoot;time-delay and lagging in conventional temperature control system and any trouble incurred by many unmeasured disturbances can be avoided.