单项选择题

有源蜂鸣器和无源蜂鸣器中的源是指什么? A.
电源 B.
振荡源 C.
源极 D.
以上都不是

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单项选择题

In the following description of fuzzy control, the one that is false is
A、the input of a fuzzy control is generally the error and the change rate of the error.
B、 firstly, the deviation between the sensor and the set value should be transformed into the discrete domain by the quantization factor.
C、the result of fuzzy reasoning is obtained by the principle of maximizing membership degree, and then converted into the actual value through the scaling factor.
D、the membership degree of fuzzy control can be given casually.