| 摘要 |
<p>An electric vacuum cleaner comprises a main body (1) having an electric blower (7) and a dust collecting chamber (3), a triac (37) controlling the electric blower, a floor nozzle (17) coupled to the main body, a pressure sensor (40) sensing the pressure in the vicinity of a suction port of the electric blower, a current sensor (35) sensing the current in a rotary brush driving motor (19) of the floor nozzle, and a microcomputer. The microcomputer performs the fuzzy inference on the outputs of the pressure sensor and the current sensor to determine the duty cycle of the blower control triac on the basis of the result of the inference. By doing this, supply of power to the electric blower in accordance with the condition of a floor surface is realized. <IMAGE></p> |
