Boots – shoes – and leggings
Patent
1988-09-29
1989-08-01
Gruber, Felix D.
Boots, shoes, and leggings
341116, 342 75, 342359, 364559, G05B 1502, G05D 320
Patent
active
048538396
ABSTRACT:
Apparatus and methods for tracking a positioning system for antennas and other devices. Hardware of the invention contains circuitry which when given velocity information, changes its output position information at a specified rate. The hardware may also be triggered to capture a sample of such output position information to provide feedback to the firmware of the invention, which implements a position tracking algorithm. The algorithm utilizes two consecutive input position samples, the time between those samples and the feedback information corresponding to the last position input sample to calculate the velocity to be applied to the position tracking hardware until a new position input sample is available. When the new sample is available, a new velocity is calculated and applied to the hardware and the process is repeated. Between position input samples, the hardware updates the output position to correspond to the motion of the positioning system. The invention minimizes group delay and allows for more convenient sampling from a remote positioner.
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Brochure by Northern Precision Laboratories, Inc. entitled "A Leader in High Accuracy Antenna Position Encoding and Control Systems".
A brochure by Analog Devices entitled "Hybrid, Tracking Resolver-To-Digital Converters".
Exerpt from Synchro-Conversion Handbook by the engineering staff of ILC Data Device Corporation, comprising title page, overleaf, page III and pp. 15-36 (1974).
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Hyers Robert C.
Nichols Steven R.
Stovall Walter M.
Trawick Charles D.
Gruber Felix D.
Scientific-Atlanta, Inc.
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