EP0673559A1 — Motor system with individually controlled redundant windings
Assigned to Honeywell Inc · Expires 1995-09-27 · 31y expired
What this patent protects
A fault tolerant brushless DC motor includes plural parallel windings (17), each individually controlled by a respective control module (21). At least three windings are provided such that in the event there is a short in one of the windings, the other two windings continue to ge…
USPTO Abstract
A fault tolerant brushless DC motor includes plural parallel windings (17), each individually controlled by a respective control module (21). At least three windings are provided such that in the event there is a short in one of the windings, the other two windings continue to generate a field to cause the shaft (13) of the motor, having permanent magnets (15) mounted thereon, to rotate. Preferably at least three windings (17) are provided such that in the event of a single short, one of the remaining two windings serves to nullify the drag generated by the shorted winding with the other remaining winding generating a sufficient field to cause the shaft (13) of the motor to rotate. The motor system has particular application in a field of vector control of rocket nozzles. In a preferred configuration, the system includes eight windings (17).
Drugs covered by this patent
- Qalsody (TOFERSEN) · Biogen Ma
Bibliographic data sourced from FDA Orange Book + USPTO public records. Plain-English summary generated by AI grounded in source text. Patent term extensions (PTR, SPC, pediatric) may shift the effective expiry. Not legal advice.
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