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A control system for estimating the approximate relative position of an electric linear actuator on a surface maintenance machine. The control system includes device for selectively coupling the electric motor of the linear actuator to the electric power source, device for measuring or estimating th...

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Bibliographic Details
Main Authors Alowonle, Musibau O, Bushey, Bruce Phillip, Erko, Robert J, Groschen, Jr, Paul Leonard, Milun, Richard F
Format Patent
LanguageEnglish
Published 28.03.2006
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Summary:A control system for estimating the approximate relative position of an electric linear actuator on a surface maintenance machine. The control system includes device for selectively coupling the electric motor of the linear actuator to the electric power source, device for measuring or estimating the current and voltage of the electric motor, device for estimating the motor speed based on the measured values of current and voltage, and storage device for storing values of estimated motor speed and integrating device for determining approximate linear actuator position, wherein the integrating device integrates the motor speed over time to determine the approximate position of the linear actuator position.