Invention Grant
US08644992B2 Method to improve washer motor efficiency and performance 有权
提高洗衣机电机效率和性能的方法

Method to improve washer motor efficiency and performance
Abstract:
The present subject matter relates to methods and apparatus for controlling operation of a washing machine motor. Different control algorithms may be used during different time periods of operation of the motor where each algorithm is configured to provide different operating characteristics of the motor based on the needs of the washing machine system. The method and apparatus both provide for changing from one motor control algorithm to another algorithm while the motor is spinning. For certain type motors, a time period may be established between operation of the motor under a first or second control algorithms where no energy is supplied to the motor but the motor is permitted to continue to spin. During this period of time for these type motors, magnetic fields in the motor are permitted to subside prior to application of the second control algorithm.
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