Abstract:The actuality of model-vehicle garage is brifely introduced, and an intelligent model car with automatically garage function has been designed and implemented based on H8/3048F. The intelligent model-vehicle systeem mainly includes power module, road detecting module, speed detecting module, steering control module, and motor driving module. The machanical structure of the model-vehicle is particularly introduced. According to the information of track and garage detected by two rows photoelectric sensors in the front and rear, microcontroller estimates the car's current position, determines the running state, and controls motor speed and steering angle. The feature of steering with rear wheels is analysed. After the analyzation of the steering feature with rear wheels, it is found that the garaged out radium is bigger than that of garaged in. Based on the former theory analysis, a control strategy which includes speed controlling based on closed-loop PD and steering controlling with open-loop PWM is put forward. Experimental results show that the model vehicle based on the strategy runs quickly and smoothly with high responding speed and excellence anti-jamming capability, etc, and has certain reference and application value.