Control for servo motors
AssigneePreh GmbH
InventorsHarald Ment, Markus Peschel
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Abstract
A drive arrangement for positioning a positioning element is disclosed that includes an electric servo motor for driving the positioning element, a potentiometer for presetting a setpoint, an actual value sensor disposed at the servo motor, and a motor driver with an integrated evaluation and control unit comparing the setpoint and actual value, whereby a pulse-shaped signal is superposed on the setpoint and the pulse-shaped signal exceeds the motor driver hysteresis in the evaluation and control unit.
Claims10
A drive arrangement for positioning a positioning element, the drive arrangement comprising:
- an electric servo motor for driving the positioning element;
- a potentiometer for providing a setpoint;
- an actual value sensor disposed at the electric servo motor provided;
- and
- a motor driver having an integrated evaluation and control unit for comparing the setpoint and an actual value;
- wherein a pulse-shaped signal is superposed on the setpoint, and
- wherein the pulse-shaped signal exceeds a motor driver hysteresis.
A method for controlling a movement of a positioning element, the method comprising the steps of:
- providing from a potentiometer a setpoint for controlling an evaluation and control unit that includes a motor driver;
- detecting, in the evaluation and control unit an actual value that is determined at the servo motor;
- comparing the actual value with the setpoint;
- activating a counting unit having an integrated oscillator with an adjustment of the potentiometer;
- and
- superposing the setpoint with a pulse-shaped signal corresponding to a frequency generated in the oscillator, the pulse-shaped signal exceeding a motor driver hysteresis in the evaluation and control unit.
Dependencies are inferred from the claim text.