The Design Of Vehicle Control System And Strategy Research Of Electric Vehicle

Automobile manufacturers and research institutes with motor vehiclecontroller to replace the motor controller with single control of electric vehicles,at the same time on the performance of the whole power system optimization.Jilin high-tech electric vehicle Co. Ltd. to Toyota COASTER bus body change forthe high-end business car, vehicle hardware equipped with vehicle controller,electric vehicle driving speed synchronous automatic gearbox, motor controllerand motor, battery management system, special instrument, electric car highpressure protection device. With driving motor, brake energy recovery,automatic transmission and high voltage protection technology of vehiclecontroller software.The main content of this paper includes the following parts1. Calculation of pure electric bus power system component parameters,uses the software to carry out the dynamic performance and the average powerconsumption simulation of the motor and battery, test results have reached thedesign target; characteristics test of the motor and the battery group selected,temperature characteristics are the actual characteristics and properties, the motorbattery group, the data mining and machine box and power system testing andstorage of a large amount of data through data, these data provide the theoreticalbasis for formulating control strategy of concrete. According to determine theactual characteristics and properties of look-up table for direct torquetransmission drive motor, this process through the Matlab Simulink LOOKUPMAP diagrams.2.The design of hardware and network structure. Hardware FREESCALEsixteen chip to design the control system based on, for main power circuit, powersupply filter circuit, signal processing circuit, actuator drive circuit, CAN bus circuit. According to the specific control protocol provided by the manufacturermade the controller receives the control protocol, CAN network packet structure.3. Developed a software control strategy, the control strategy includes adrive control strategy, braking control strategy for energy management controlstrategy, control strategy and security.4. Road test. The static vehicle test CAN communication, the action of theactuator. Then the dynamic vehicle test, including the analysis of automobilepower performance index, energy recovery analysis, finally, long debuggingaccording to dynamic vehicle, the debugging according to download from the busto download the tool of data curve data in one table analysis. At the same timeprocessing control weaknesses analys is software show according to the data,develop a new control strategy to control, back to the data a nalys is, the responsecharacteristics of the analysis basis of data here is the effect and auto show;...