Fuzzy control apparatus generating a plurality of membership functions for determining a drive condition of an electric vacuum cleaner
First Claim
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1. An electric vacuum cleaner including a suction channel, said electric vacuum cleaner comprising:
- a fan motor for generating suction force to draw dust particles through said suction channel;
dust detecting means for detecting dust particles passing through said suction channel and for generating a signal responsive to the quantity of dust particles;
dust counting means for counting each generation of said signal by said dust detecting means in a given interval and for generating a further signal based upon said count;
fuzzy inferring means for processing said further signal and a normalized membership function in order to generate a plurality of membership functions, each of said plurality of membership functions having a curvature substantially identical to the said normalized membership function, said fuzzy estimation means further including means for determining a drive condition based upon said plurality of membership functions; and
power control means for controlling the fan motor in accordance with the drive condition determined by the fuzzy estimation means.
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Abstract
A control apparatus of an electrical appliance comprising a sensor for detecting a physical amount; and a fuzzy inferring device for determining the drive condition of a load by fuzzy inference based on a signal outputted from the sensor, and wherein the sensor has at least one normalized membership function to be used by fuzzy inference and achieves a plurality of membership functions which can be expressed by congruent curves by performing a predetermined subtraction or an addition on the signal outputted from the sensor.
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Citations
3 Claims
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1. An electric vacuum cleaner including a suction channel, said electric vacuum cleaner comprising:
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a fan motor for generating suction force to draw dust particles through said suction channel; dust detecting means for detecting dust particles passing through said suction channel and for generating a signal responsive to the quantity of dust particles; dust counting means for counting each generation of said signal by said dust detecting means in a given interval and for generating a further signal based upon said count; fuzzy inferring means for processing said further signal and a normalized membership function in order to generate a plurality of membership functions, each of said plurality of membership functions having a curvature substantially identical to the said normalized membership function, said fuzzy estimation means further including means for determining a drive condition based upon said plurality of membership functions; and power control means for controlling the fan motor in accordance with the drive condition determined by the fuzzy estimation means. - View Dependent Claims (2, 3)
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Specification