Method and apparatus for embedding motor error parameter data in a drive motor of a power driven wheelchair
First Claim
1. A drive motor assembly for a power driven wheelchair comprising:
- a stator housing for containing field coils of a stator of said motor assembly;
at least one sensor disposed in said stator housing for sensing rotation of said motor;
a memory storing motor error parameter data including data of errors of said at least one sensor, said memory being embedded in said stator housing; and
means for accessing said error parameter data of said memory from said stator housing.
20 Assignments
0 Petitions
Accused Products
Abstract
A drive motor assembly for a power driven wheelchair comprises: a stator housing for containing field coils of a stator of the motor assembly; at least one sensor disposed in the stator housing for sensing rotation of the motor; a memory storing motor error parameter data including data of errors of the at least one sensor, the memory being embedded in the stator housing; and a connection for accessing the error parameter data of the memory from the stator housing. The motor error parameter data may be accessed from the embedded memory of the drive motor by a programmed motor controller for use in controlling the drive motor. Also, the motor error parameter data may be embedded in the drive motor by the steps of: controlling the motor through at least one predetermined drive pattern; sensing motor rotation during the drive pattern and generating signals representative thereof; deriving error parameter data of the drive motor from the generated signals; programming a memory with the derived error parameter data; and embedding the memory in the drive motor.
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Citations
23 Claims
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1. A drive motor assembly for a power driven wheelchair comprising:
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a stator housing for containing field coils of a stator of said motor assembly; at least one sensor disposed in said stator housing for sensing rotation of said motor; a memory storing motor error parameter data including data of errors of said at least one sensor, said memory being embedded in said stator housing; and means for accessing said error parameter data of said memory from said stator housing. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. Apparatus for accessing motor error parameter data from a drive motor of a wheelchair, said apparatus comprising:
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a memory embedded in said drive motor, said memory storing motor error parameter data; and a programmed motor controller for controlling said drive motor, said motor controller operative to access the motor error parameter data from said embedded memory for use in controlling said drive motor. - View Dependent Claims (12, 13, 14, 15, 16)
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17. Method of embedding motor error parameter data in a drive motor of a wheelchair, said method comprising the steps of:
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controlling said motor through at least one predetermined drive pattern; sensing motor rotation during said drive pattern and generating signals representative thereof; deriving error parameter data of said drive motor from said generated signals; programming a memory with said derived error parameter data; and embedding said memory in said drive motor. - View Dependent Claims (18, 19, 20, 21, 22, 23)
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Specification