Boots – shoes – and leggings
Patent
1990-07-31
1992-08-11
Teska, Kevin J.
Boots, shoes, and leggings
25023114, 364565, 36457101, G06F 1100, G06F 1520
Patent
active
051385643
ABSTRACT:
A method and apparatus provides on-line calibration of low cost encoders by interfacing an encoder with a microprocessor and driving a shaft to which the encoder is attached at a slow constant speed and at a fast constant speed. Data is collected by the microprocessor for the slow and fast speeds and a mathematical analysis is performed which determines the torque disturbances occurring at each point in the rotational cycle of the shaft and which further determines the actual location of each encoder line on the encoder in the rotational cycle of the shaft. By knowing the actual location of each encoder line and the number of counts between encoder lines for a given speed, a high accuracy encoder can be realized at a minimal cost.
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de Jong Joannes N. M.
Wolf Barry
Teska Kevin J.
Xerox Corporation
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