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In order to recycle part of the brake energy in the driving hub motor of the 8X8 electric vehicles. And the energy utilization rate of electric drive vehicles should be increased, the wear of mechanical brake system should be reduced. A fuzzy control method is established for mechanical and electrical joint brake. It can be used to establish a principle of the distribution of brake. Through the simulation on MATLAB platform, it shows that this control method is efficient in improvement of brake ability, distribution of brake distribution, and the energy recycling.

A new kind of control method named "G-Vectoring control" is used in vehicle steering stability control, which uses the lateral acceleration to control the longitudinal acceleration, and improves the steering stability by redistributing the driving force. The motor and its control system as well as the vehicle system control are modeled by Matlab, the vehicle dynamics model is designed by adams. After the co-simulation of snakelike tests, the results shows that the sideslip angle is well controlled by G-Vectoring control.

In order to overcome the shortcoming as the model is too simple to reflect the whole vehicles mechanical characteristics in traditional simulation for electric drive vehicle, the method of mechanical-electrical co-simulation is put forward. The virtual model of 8×8 wheeled vehicle is constructed by ADAMS, and then the co-simulation model is built. The co-simulation experiment is taken under the working condition of accelerating on low adhesive road,the accurate of the control model is validated according to the result, which will contribute to the research on driving antiskid control for in-wheel motor drive vehicle.

Aiming at the question about armor training simulator whose image visual is not vivid and function is not perfect in our country [1, 6], the paper introduces RV engine in simulation training system of armored vehicle. It has researched establishment of entity and fire control system model based on RV, and then accomplished the simulation of range setting state, including the changing rule of gunner viewer-sight of the Image-stabilization fire control system, the principle on the measuring distance with laser, and the calculation of the location and height lead.

In order to analysis controllability and stability of wheeled vehicle, virtual model of 8×8 wheeled vehicle was constructed by ADAMS/Car. Doing snakelike test for virtual model by use of appraise method for controllability and stability of vehicle, according to the appraise and scoring for average steering wheel angle and average yaw velocity peak value at basic speed at last, the analysis result shows the better controllability and stability of the model, which provide the basis for further study of the entire vehicle dynamics.

According to the analysis of wheeled armored vehicles hybrid electric drive system design scheme, we determined the factors set matrix and scheme set matrix of hybrid electric drive scheme evaluation based on some subjective and objective experience. We adopt projection pursuit index function to measure the size of projection exposing to a decision the structure, and looking for mission projection objective function to achieve optimal projection value. Finally, we set quality order according to the projection value for armored vehicles hybrid electric drive system decision scheme, and choose the best possible solution.

In order to analysis the sensitivity and follow characteristic in steering of 8×8 wheeled vehicle, virtual model of 8×8 wheeled vehicle is constructed by ADAMS/Car. Doing simulation for transient performance of steering for virtual model according to the appraise of yaw velocity peak value at 70% of highest speed. The analysis result shows the better sensitivity of the model.