H - Electricity – 02 – P
Patent
H - Electricity
02
P
341/103, 318/18
H02P 8/00 (2006.01) G05B 19/23 (2006.01) H02P 8/14 (2006.01)
Patent
CA 1283191
ABSTRACT OF THE DISCLOSURE A control system is provided for a hydraulic actuating system having a multi-phase stepping motor with a driver therefor which supplies and controls DC current through each of the motor windings such that no current is induced into the control winding from adjacent windings. The stepping motor precisely controls the rotation of an eccentric cam engaging an actuating plunger which actuates a control valve of the hydraulic actuating system. The driver receives control signals from a computer programmed to calculate, from user input command signals indicative of the desired system condition, and generate those control signals which most quickly achieve a rough approximation of the desired system condition. After this rough approximation is attained, the computer generates new control signals for the driver as a function of feedback signals and/or system component characteristics so as to precisely achieve the desired system condition.
489984
Backe Bengt Soren
Durham La Moyne Warner
Kirby Eades Gale Baker
Turnmaster Corp.
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