MOTOR BRAKE SYSTEM
First Claim
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1. A motor comprising:
- a housing including a rotor and stator;
a brake assembly adapted to restrain rotation of the rotor;
a brake controller comprising a brake diagnostics system;
at least one vibration sensor located in the housing and providing vibration data to the brake diagnostics system in response to a brake operation cycle of the brake assembly, wherein said vibration data is used by the brake diagnostics system to assess an operative condition of the brake assembly.
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Abstract
A motor includes a housing containing a rotor and stator. A brake assembly is adapted to restrain rotation of the rotor. A brake controller includes a brake diagnostics system. At least one vibration sensor is located in the housing and provides vibration data to the brake diagnostics system in response to a brake operation cycle of the brake assembly. The vibration data is used by the brake diagnostics system to assess an operative condition of the brake assembly.
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Citations
20 Claims
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1. A motor comprising:
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a housing including a rotor and stator; a brake assembly adapted to restrain rotation of the rotor; a brake controller comprising a brake diagnostics system; at least one vibration sensor located in the housing and providing vibration data to the brake diagnostics system in response to a brake operation cycle of the brake assembly, wherein said vibration data is used by the brake diagnostics system to assess an operative condition of the brake assembly. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A brake condition diagnostic method for an electric motor, said method comprising:
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sensing vibration data from a vibration sensor located in a housing of a motor during a sensing window when a brake assembly cycles between an engaged condition and a disengaged condition; filtering said vibration data to isolate at least one of a low frequency region of interest and a high frequency region of interest; converting said filtered vibration data to a frequency domain; assessing an operative condition of the brake assembly based upon at least one feature of said vibration data in said frequency domain. - View Dependent Claims (18, 19, 20)
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Specification