Position detecting apparatus employing an estimating function

Details Position detecting apparatus employing an estimating function Position detecting apparatus employing an estimating function

1993-07-14

1995-08-22

Allen, Stephone B.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

25023114, 356375, G01D 534

Patent

active

054442400

ABSTRACT:
A position detecting apparatus with a sampling function, comprises a waveform generator for generating repetitive periodic waveforms in relation to a moving object to be measured. A processor samples the output of the waveform generator and, after digitizing the same, processes the digital data to detect the position of the object. The processor first estimates the current position from the data obtained in the preceding detection and then determines the current position on the basis of the estimated position. The apparatus can be incorporated in a system for driving an optical unit in a video camera, wherein the object to be measured is a moving focus lens member and is actuated by a direct drive motor.

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Design and Construction of a Microcomputer-Controlled Light-Weight Robot Arm, Lygouras, Robotics and Autonomous Systems; pp. 269-283, Nov. 1991.

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