Jiang Haobin

Application of AMESim & MATLAB simulation on vehicle chassis system dynamics

This paper presents a simulation modeling way which used by software AMESim and MATLAB/ Simulink. The aim is to improve vehicle ride comfort and handling stability through integrated control vehicle chassis system. Then co-simulation model for vehicle semi-active suspension (SAS) and electric power steering (EPS) is present. AMESim is applied to build mechanical dynamics model for SAS and EPS. MATLAB/Simulink is used to build the integrated controller model of vehicle chassis system. Through build s-function to connect interface of AMESim and Simulink. Co-simulation results prove that in the case of integrated control, handling stability and ride comfort is better than solo SAS control or solo EPS control. In a word, the simulation model is proved to be valid, and it is helpful to provide a new method to research vehicle chassis dynamics simulation.

A New EPS Control Strategy Based on Feedback of Yaw Rate and Lateral Acceleration

As virtual human of agriculture intelligent about operating environment and target of complexity and uncertainty, Virtual human operator is not an effective access to navigation knowledge to conduct its decision making .To solve these problems, the put use Congolog to action planning of virtual human. Virtual human found a high level of uncertainty from some of the legal procedure of formation of the implementation of the mandate of action sequences, replaced the virtual human from the initial state to the target state for the action sequences. So as to take virtual human encountered by the complexity and uncertainty. Finally, JAVA and Congolog take for virtual human of intelligent agriculture to picking fruit.In this study, a new Electric Power Steering(EPS) control strategy based on feedback of vehicle yaw rate and lateral acceleration was investigated for the improvement of vehicle steering stability and increase of vehicle dynamic performance. An integrated control model based on EPS system model including steering resistance torque and full-car 3 Degree-Of-Freedom (DOF) dynamic model was developed. Various step inputs and sinusoidal inputs were applied to the integrated control model for simulation and the resulting performance was analyzed. In addition,real vehicle test was carried out. The results revealed that the proposed EPS control strategy can provide good performance of stability and controllability of the vehicle, also can reduce the rise time, the adjust time and the overshoot.