Application of Two-Freedom PID Controller in Aluminum Electrolysis Process

To solve the problem of low control accuracy and weak real-time performance in regular intermission control mode in aluminum electrolysis,feed forward two-freedom PID controller has been designed.Feed forward two-freedom self-turning PID controller with small excessive adjustment,rapid dynamic responses and anti-jamming capability have been designed.The controller adopts feed forward control system structure,fixes on anti-jamming optimum parameter and tracking feature optimum feed forward parameter,and optimizes system parameter.It has improved control effect.In conclusion,the controller has been adopted in aluminum plant and has gained prominent control effect.It has improved control performance and made reduction cell working in the optimum states,improved current efficiency and increased the quantity and quality of aluminum,got prominent economical-benefit.