In order to get the anthropomorphic robot accurate parameters of the upper limb joint control motor, a method based on Ziegler Nichols-frequency response of the adaptive PID controller is proposed. The control circuit identifies online important critical frequency response characteristics of process object through input and output data in the normal process operation, and then the system online update PID controller parameters based on Ziegler-Nichols setting rules or by the improved method. The results show that the method has stronger robustness and adaptive ability. It can always guarantee control circuit run in the best condition and almost completely resistant to outside interference. The simulation is not only an important guiding role to the design of anthropomorphic robot hand control node, but also certain reference significance for the dc motor closed-loop control.

In this paper, a method based on Ziegler Nichols-frequency response of the vehicle servo system adaptive PID controller is proposed. The control circuit online identify important critical frequency response characteristics of process object through input and output data in the normal process operation, and then the system online update PID controller parameters based on Ziegler-Nichols setting rules or by the improved method. The adaptive process of PID controller can online real-time correct parameters and ensure the control loop always work in the best condition even under the operating conditions change.The results show that the method has stronger robustness and adaptive ability.

Auto throttle controls directly the speed of the car. The driver can trample accurately and smoothly trample accelerator pedal to control the speed. In order to make the driver can real-time track the set the speed in the process of vehicle driving, a method based on Ziegler Nicholsfrequency response of the adaptive PID controller is proposed. The control circuit identifies online important critical frequency response characteristics of process object through input and output data in the process normal operation, and then the system online update PID controller parameters based on Ziegler-Nichols setting rules or by the improved method. The method can smoothly, rapidly and accurately control the throttle mechanical leg, and make driving robots has good speed tracking precision during the automatic driving of vehicle. The method has good stability and robustness.