Automatically positionable chair
作者： John B. Wilker , Stephen R. Schulte , Stephen C. Wissel
DOI:
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摘要: A programmable automatic positioning chair for medical application. The has moveable support surfaces which are driven by electric motors to preprogrammed positions. Motor speed is determined measuring the motor current, and integrated a microprocessor produce computed value of surface position. operates "open loop" without any feedback from position sensors.
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