FIELD: electrical engineering.
SUBSTANCE: invention relates to the field of electrical engineering and can be used to control the operation of a stepper drive containing a two-winding stepper motor operating in full-step mode. To solve this problem, during the operation of the stepper motor, the currents in each winding are continuously measured, two voltage signals corresponding to the current in each winding are formed, they are compared with the specified upper and lower threshold values and four primary logic signals are formed. Depending on the obtained values of the primary logic signals, four secondary logic signals are formed, according to the obtained values of which a step voltage signal is formed, each stationary value of which corresponds to one of the four possible states of the steady-state values of currents in the windings of the stepper motor. And if the values of all four secondary logic signals simultaneously have the value of the logical “0”, a stationary value of the step voltage signal corresponding to this transient state of the electric drive is formed. At the end of the transition state of the electric drive, the values of the four primary logic signals are stored at each current step, and their values at each next step, at the end of the next transition state of the electric drive, are compared with their previous values and, if these values coincide, a logical signal is formed indicating the loss of synchronization by the stepper drive, and a stationary value of the step voltage signal is formed, corresponding to the loss of synchronization by the stepper drive. The functional diagram of the device implementing the proposed method for monitoring the operation of an electric drive based on a two-winding stepper motor operating in full-step mode is shown in dwg. 2.
EFFECT: ability to carry out continuous, independent monitoring of the operation of the electric drive and operational automated control of the loss of the stepper electric drive synchronization using telemetry control.
7 cl, 9 dwg
