An arm suspension based on fuzzy pid controller and its active displacement control method

Abstract

The invention discloses an arm type suspension based on a fuzzy PID (proportion integrals differential) controller and an active displacement control method thereof. The arm type suspension based on the fuzzy PID controller comprises an arm type suspension, a frame, a driving circuit, two displacement sensors and the fuzzy PID controller, wherein the arm type suspension is arranged on the frame; the fuzzy PID controller is connected to a motor through the driving circuit; a pulse encoder is arranged on the motor; the arm type suspension comprises the motor, two longitudinal arms, two cantilever transmission regulating mechanisms and two electromagnetic clutches; the two cantilever transmission regulating mechanisms are distributed at the two sides of the motor; two output ends of the motorare connected to one ends of the two cantilever transmission regulating mechanisms through the electromagnetic clutches; the other ends of the two cantilever transmission regulating mechanisms are connected to the two longitudinal arms; the two displacement sensors are respectively arranged on the two longitudinal arms; and the displacement sensors and the pulse encoder are connected to the fuzzyPID controller. The effect of active displacement control of the arm type suspension can be improved; and the arm type suspension based on the fuzzy PID controller improves the driving smoothness ofvehicles, and ensures smooth and steady control, high displacement control accuracy, and no external interference.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to an arm suspension based on a fuzzy PID controller and an active displacement control method thereof. Background technique [0002] Suspension is an important part of modern automobiles, and the performance of automobile suspension system is an important factor that affects automobile ride comfort, handling stability and driving safety. With the development of automobile technology, the defect that the traditional passive suspension cannot respond to the road conditions has gradually become a bottleneck for improving automobile performance. Therefore, people have developed an active suspension that can take into account comfort and handling stability. Active suspension not only It can isolate the vibration of the road well, and can control the movement of the car body. In addition, it can also adjust the height of the car body and improve the passability of the car on bad road...

AI Technical Summary

Problems solved by technology

With the development of automobile technology, the defect that the traditional passive suspension cannot respond to the road conditions has gradually become a bottleneck for improving automobile performance. Therefore, people have developed an active suspension that can take into account comfort and handling stability. Active suspension not only It can isolate the vibration of the road surface well, and can control the movement of the car body. In addition, it can also adjust the height of the car body and improve the passability of the car on bad roads. It is the development trend of car suspension in the future.

At present, the application of active suspension in automobiles is still extremely rare. One of the important reasons is that it is difficult to control and difficult to implement.

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