Low cost high performance single board motor controller

Details Low cost high performance single board motor controller Low cost high performance single board motor controller

1999-09-16

2001-04-24

Nappi, Robert E. (Department: 2837)

Electricity: motive power systems

Switched reluctance motor commutation control

C318S132000, C318S434000, C318S721000, C318S722000

Reexamination Certificate

active

06222332

ABSTRACT:

BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to motor control circuitry and architecture and more particularly to a low cost, high performance, high volume production single board motor controller for use for use with reaction wheel assemblies (RWAs), control moment gyroscopes (CMGs) and pointing systems,on space vehicles where size and weight play an important roles.
2. Description of the Prior Art
Honeywell presently produces a motor control system identified as the HR0610 which has met design requirements for advanced systems such as the Global series of RWAs however, with changing satellite markets, there is an ever increasing requirement for minimal cost, minimal size and high volume production without compromising quality or performance. Because of the size limitations imposed by the RWAs, the HR0610 presently requires two printed circuit boards and a plurality of electronic components of considerable size.
BRIEF DESCRIPTION OF THE INVENTION
The present invention draws upon the high quality and performance of the HR0610 bit includes a number of design modifications which reduce the size and weight of the controller to where it may occupy a single printed circuit board and still fit the size limitation of the RWAs. Production is also improved and cost is reduced. An example of one of the innovations is accomplished by analyzing the electronic filters heretofore composed of an three inductors and two capacitors, and determining that by utilizing four inductors and three capacitors the overall size of the filter can actually be reduced without changing its filtering ability. Utilization of hybrid circuits further reduces size and cost with the result that a vastly improved RWA implementation (called the HR14) is produced with only about 70% of the previous electronics size and weight and this is accomplished with a 40% reduction in cost.


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Paper entitled ?A New family Of Low Cost Momentum/Reaction Wheels by Bill Bialke for 1992 American Astronatical Sociaty Paper.

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