UNIPOLAR DRIVER FOR STEPPER MOTOR CONTROL

Stepper motors are electromechanical motion devices used primarily to convert information in digital form to mechanical motion. Whenver stepping from one position to another is required, whether the application is industrial, military,or medical, the stepper motor is generally used.Advantages of stepper motors is: position error is noncumulation, a high accuraty motion is possible, even under open-loop control. Because of the incremental nature of command and motion, step motors are easily adaptable to digital control applications.The paper presents two pulse distributors are remarkable for simplicity, high-reliability, multifunctional facilities and a unipolar bilevel R/L- driver circuit for four phases stepper motor.