Research On Motion Control System For Non-Contact Measure System

Since middle 20th centuries, scientific technology develops with the higher speed than ever before.Accompany with the computer technology, the electronic technology and automatic controlling theoretic, the forepassed control of electromotor was simply starting or stopping, now it was already concerned with accurate physical data such as speed, displacement, torsion and so on. Primary "electromotor controlling system", "electric controlling system" has developped to "the movement controlling system", which of higher precision and speed, and more flexible.This thesis is dead against the technical demand on orientation precision and revolving speed, when sphere revolved in the measurement system of positions for hole series, studied on stepper motor closed loop motive control system, mostly involved demonstration of the total project of the movement controlling system, design of the embedded movement controller, study on the movement control algorithm of stepper motor, establishment of the image capturing project of locomotion displacement and optimization algorithm of the displacement feedback control of stepper motor etc., it could be recapitulated as follows:Firstly, in the systemic total control project, in order to satisfy the demand on orientation precision of the locomotion machine, make sure the closed loop controlling project is the best.Based on computer control mode of stepper motor, aimed at the deficiency ofreal time when stepper motor was controlled directly by PC computer under the Windows operating system, adopted the master-slave control mode, which made up of a PC computer and a singlechip.Secondly, expounded the design of motive controller based on ISA bus in PC computer, generally analysed the interface electrocircuit between embeded movement controller and ISA bus in PC computer, distribution of controlling pins, and according to the movement controlling characteristics of this system, established relevant communication protocol.Thirdly, realized the control of three stepper motors by the minimal singlechip system, according to the characteristic of singlechip programme, home analyzed timing of stepper motor, accelerating or decelerating control and spot location control, carried it out by programme.Fourthly.at orientation displacement data capturing, home analyzed the theory about angle encoders and serial communication of PC computer, programmed communication software of stronger correction for single non-response communication mode, then, the security of data transmission could be insured.Finally, in order to shorten the transition of position regulation, applied proportional modulation controlling algorithm, and realized it on software.Based on the closed loop controlling system of stepper motor, and full use of mature technology, this thesis resolved various of technical problems, which play as key points in closed loop controlling system, and integrated the parts of movement controlling system and displacement feedback module, both are self-designed, matched scheduling and function of each parts.It's practiced that, this controlling system achieves the technical demands on precision and velocity of movement controlling of locomotion machine, satisfies the measurement requests of the item.