Combines speed servocontrol based on gray generalized predictive algorithm

The walking office takes important part in the load control of combine. In order to maintain the optimum load of combine, it is necessary to control its speed precisely. The walking office of combine is analyzed in this paper. Its mathematical model is approximately a third-order system. The system parameters are uncertain, and there are many external disturbances. Because of this, a servocontroller based on grey generalized predictive control algorithm is designed. The results of simulation experiments and real vehicle tests show that the controller can effectively adapt to the changes of the internal parameters, overcome the external disturbance, and achieve the purpose of tracking a given speed.