Device and method for driving electric actuator

Details Device and method for driving electric actuator Device and method for driving electric actuator

2008-06-24

2008-06-24

Donovan, Lincoln (Department: 2837)

Electricity: motive power systems

Constant motor current, load and/or torque control

C318S434000, C318S720000

Reexamination Certificate

active

07391175

ABSTRACT:
A smart actuator that includes a driving device and an electric actuator such as a DC motor includes a driving current detecting circuit, a driving circuit connected to the electric actuator, a control circuit that controls the driving circuit according to current data provided by the current detecting circuit to supply the electric actuator with a set amount of driving current when the electric actuator has a designed operating condition and a correction circuit that corrects the current data of the driving current if the operating condition is shifted from the designed operating condition to supply the set amount of driving current to the electric actuator.

REFERENCES:
patent: 4771843 (1988-09-01), Shimizu
patent: 6326753 (2001-12-01), Someya et al.
patent: 6414455 (2002-07-01), Watson
patent: 2001/0026134 (2001-10-01), Fukumoto et al.
patent: 2007/0205741 (2007-09-01), Kaneko et al.
patent: A-2001-058578 (2001-03-01), None

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