Method of estimating gain of servo control system
AssigneeSamsung Electronics Co., Ltd.
InventorChang-Ik Kang
Life of this patent
Estimating the term…
Abstract
A method of estimating the gain of a servo control system including an actuator, in which input data supplied to the actuator and the actuator's position data are applied to a gain estimate formula in a closed loop discrete value system for controlling the actuator, so as to estimate the gain of the servo control system.
Claims10
A method of estimating the gain of a servo control system, wherein a digital-to-analog converter which converts a digital control signal U into an analog signal, an actuator which is driven according to the analog signal, and an analog-to-digital converter which converts position information X according to the drive of the actuator into digital data form at least one servo control system, said estimation method comprising the steps of:
- setting a discrete gain of the actuator, the servo gain system forming a closed loop discrete value system;
- obtaining the position information X of the actuator by applying the digital control signal U to the actuator, and calculating an estimate error at each sampling period;
- calculating the total estimate error of an entire sampling period by setting a weight to each calculated estimate error;
- and
- estimating the gain of the servo control system.
A method of estimating the gain of a servo control system, comprising:
- converting a digital control signal U into an analog signal;
- driving an actuator in dependence upon the analog signal;
- converting position information X corresponding to movement of the actuator attributable to said driving into digital data for at least one servo control system forming a closed loop discrete value system by:
- setting a discrete gain for the actuator;
- obtaining said position information X for the actuator by applying said digital control signal U to the actuator and making an estimate of error at each sampling period;
- determining a total for said estimate of error corresponding to an entire sampling period by setting a weight to each said estimate of error;
- and
- estimating gain of the servo control system.
A servo control system comprising:
- a digital-to-analog converter for converting a digital control signal U into an analog signal;
- an actuator driven by the analog signal;
- an analog-to-digital converter for converting position information X according to the drive of the actuator into digital data;
- a gain setter for setting a discrete gain of the actuator, the servo gain system forming a closed loop discrete value system;
- a first calculator for obtaining the position information X of the actuator by applying the digital control signal U to the actuator, and calculating an estimate error at each sampling period;
- a second calculator for calculating the total estimate error of an entire sampling period by setting a weight to each calculated estimate error;
- and
- a gain estimator for estimating the gain of the servo control system.
An apparatus for estimating the gain of a servo control system, comprising:
- a converter converting a digital control signal U into an analog signal;
- a driver driving an actuator in dependence upon the analog signal output from said converter;
- another converter for converting position information X corresponding to movement of th actuator attributable to said driving into digital data for at least one servo control system forming a closed loop discrete value system, said another converter comprising:
- a setter for setting a discrete gain for the actuator;
- a first calculator for obtaining said position information X for the actuator by applying said digital control signal U to the actuator and making an estimate of error at each sampling period;
- a second calculator for determining a total for said estimate of error corresponding to an entire sampling period by setting a weight to each said estimate of error;
- and
- a gain estimator for estimating gain of the servo control system.
Dependencies are inferred from the claim text.