Research And Development On The Electric Power Steering System Of The Automobile

The automobile has turned to the systematic experience and turned from simple pure machinery system, mechanical hydraulic pressure power system, get automatically controlled hydraulic pressure power the system, it is the energy-conservation even more, handle performance fine electron person who control electronic power steering system (Electric Power Steering System abbreviate EPS). Electronic power steering adopts the motor to offer helping hand directly, the size of helping hand is controlled by the automatically controlled unit have helping hand size adjustable, way sense good, environmental protection, consume energy low maintaining advantaging such as being convenient, it is one of the technology of research focus and front of the technical development of present automobile.This text has described electronic power steering system systematic characteristic , operation principle , structure are described, domestic and international research current situation and system model are analyzed, develop for putting forward doing well of this subject. Have set up the automobile to turn to the systematic dynamics model, is it consider side electronic power steering systematic horn input and strength input model when and is it calculate to go on when the degree of freedom of inclining to expound the fact. Have turned to electronic power steering to systematic composition principle, overall specification requirement and every part of characteristic and selected for use and made an introduction, turn key position of system to electronic power steering if motor, torque sensor, inside controller (ECU ) carry on more detailed explanation, have offered the basis for systematic development and model of the part. Have turn to electronic power steering to the control system and carry on preliminary research, has set up the mathematics model of the electronic power steering diverter, analyses electronic power steering system to turn influence , way of sense to , provide electronic PID control strategy that electric mechanics shed finally. Electronic power steering that develop to system go on the experiment at laboratory bench finally, the experimental result proves the system designed by oneself conforms with the theory data, can realize electronic power steering is turned to the normal helping hand of the system.