Electricity: motive power systems – Positional servo systems
Patent
1993-03-26
1994-06-28
Shoop, Jr., William M.
Electricity: motive power systems
Positional servo systems
318567, 318632, 318561, G05B 1101
Patent
active
053250281
ABSTRACT:
A system and method for controlling an amount of force supplied by a motor to move an object from an at-rest position is presented. The system comprises a motor controller configured to provide a motor control signal to control the amount of force supplied by the motor, and a position sensor configured to detect an actual position of the object being moved by the motor and to send an actual position signal to the motor controller. The motor control signal supplied by the motor controller controls the motor such that the motor supplies a cubic increase in force on the object to move the object from its at-rest position. The motor controller comprises a profile generator, configured to provide an acceleration profile, a velocity profile and a position profile, and to output a drive signal in response to the position profile, wherein the position profile represents a desired position of the object as a function of time. The position profile is a cubic profile as a function of time. The motor controller further comprises a summer to generate an error signal based on the difference between the desired position and the actual position. The motor controller also includes a compensator to generate the motor control signal in response to the error signal.
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Masih Karen
Shoop Jr. William M.
Storage Technology Corporation
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