Electricity: motive power systems – Positional servo systems – With particular 'error-detecting' means
Reexamination Certificate
2006-05-03
2008-08-05
Donovan, Lincoln (Department: 2837)
Electricity: motive power systems
Positional servo systems
With particular 'error-detecting' means
C318S639000
Reexamination Certificate
active
07408317
ABSTRACT:
A method, and a system of using the method, of controlling a motor having a rated capacity. The method includes determining the motor has been started, determining a plurality of operating parameters of the motor after the motor has started, determining a threshold from a portion of the operating parameters, comparing one of the determined operating parameters with the threshold, and operating the motor at a level corresponding to below the rated capacity when one of the determined operating parameters is greater than the threshold. When an electric motor having a control system according to the present invention lifts a load, drives a machine, or starts other motions, the control system automatically adjusts to a power level that corresponds to the load. In this way, the motor will not be allowed to exert any power or force to the load in excess of what is necessary. If the machine being driven becomes jammed, binds, or draws more power for some unexpected reason, the motor will be shut down to reduce or to limit damage to the load or the machine.
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Dinh Thai
Donovan Lincoln
Michael & Best & Friedrich LLP
Wildeck, Inc.
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