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Conventional PID controller could not adjust its parameters online, a fuzzy PID control algorithm was introduced. It can automatically change PID controller's parameters according to object's characteristic and it integrates the advantages of fuzzy control with PID control, so it can improve the control speed and accuracy greatly. We applied this control algorithm in pulp concentration control system...
Most of PID controllers could not work well due to its parameters, so a PID parameters' self-adjusting method, modified A-H arithmetic, was introduced. This method can adjust the PID parameters very well. It adjusts PID controller's parameters by cross point of object's Nyquist curve and negative imaginary axis. It has good identification result to time-delay process. We used it in evaporation procedure's...
Aiming at the disadvantage of insufficient heat supply of traditional heat pump system, this paper introduced a new kind of heat pump dry system for paper machine, which adopted the blowing steam control solution and a new control algorithm. This system improved the paper machinepsilas steam utilization ratio and automation lever, especially on the aspects of economizing on energy and sheet-broke...
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