Co-simulink Of Active Suspension Control Based On VP Technology

The active suspension could adjust the control force actively to improve the ride comfort and without reduce the handling and stability of vehicles according to the working condition and the state of roads. It enables the vehicle to resolve the contradiction between the ride comfort and handling safety. The active suspension needs people's requirements for the integrated performance of vehicles.The paper analyses the vehicle active suspension using a mechanical model of active suspension which building in the ADAMS/Car instead of a mathematical model. According to analysis the control strategy of the PID and the Fuzzy-PID, this paper established the vehicle active suspension control model using the control strategy of PID and fuzzy-PID. According the input and output states of the control model, a mechanical model of active suspension was build in the ADAMS/Car, and it was using to testing the active suspension control strategy. Using optimizing the front wheel-alignment and vehicle vibration analysis to make sure of the vehicle model and know the range of the body acceleration's vibration frequency. Building a half mathematical vehicle active suspension models, testing the vehicle active suspension strategy of PID and fuzzy-PID and make true of it. Import the car model into the Control model and building the full car active suspension model.The active suspension using the co-simulation method with ADAMS/Car and MATLAB/Simulink.The results show the ride comfort and handling and stability of using the active-suspension is better than that of traditional suspension. The results of active suspension control strategy using fuzzy-PID is also better than using PID. It can reduced the body acceleration and pitch angle by using the distributed control instead the full vehicle control, and provide the distributed control correctly. The vehicle active suspension building in the ADAMS can complicate non-linear and easier to built accurate vehicle model than the mechanical model. The co-simulation method, where no complex dynamic equation and transfer function is needed and it can also highly enhance the efficiency of design.