Electricity: motive power systems – Synchronous motor systems – Brushless motor closed-loop control
Reexamination Certificate
2007-11-16
2011-12-27
Benson, Walter (Department: 2837)
Electricity: motive power systems
Synchronous motor systems
Brushless motor closed-loop control
C318S400010
Reexamination Certificate
active
08084972
ABSTRACT:
A motor control system and method implements non-trapezoidal motor control and meets established “fail passive” regulatory guidelines. In particular, a system and method of controlling a multi-phase brushless motor that includes a multi-pole permanent magnet rotor, and an individual, electrically isolated stator winding associated with each phase that includes a first terminal and a second terminal. A motor command is supplied to a motor control. The motor control is configured such that the first terminal of each stator winding is selectively coupled to a power source at a first duty cycle, and the second terminal of each stator winding is selectively coupled to a power source asynchronously with the first terminal of each stator winding at a second duty cycle.
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European Search Report for Application No. 08169198, mailed on Mar. 24, 2009.
Strong Ronald E.
Wilkens Dean R.
Benson Walter
Chan Kawing
Honeywell International , Inc.
Ingrassia Fisher & Lorenz P.C.
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