编码器信号处理模块中的一段程序如下。其中,QuadA、QuadB分别为2500PPR增量式编码器的A、B信号,counter初始值为200。那么,电机转动90°后,counter的值为()。 always@(clk) begin if(QuadA!=QuadAprev || QuadB!=QuadBprev) counter <= counter +1; QuadAprev <= QuadA; QuadBprev <= QuadB; endA.625B.825C.2500D.2700
编码器信号处理模块中的一段程序如下。其中,QuadA、QuadB分别为2500PPR增量式编码器的A、B信号,counter初始值为200。那么,电机转动90°后,counter的值为()。 always@(clk) begin if(QuadA!=QuadAprev || QuadB!=QuadBprev) counter <= counter +1; QuadAprev <= QuadA; QuadBprev <= QuadB; end
A.625
B.825
C.2500
D.2700
参考答案和解析
ABCDEFG
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