matlab：模糊PID控制器
各位高手：matlab编程出现以下错误，怎么修改，
a = 0.100000, b = -0.300000, c = 3.000000, d = 0.000000
??? Error using ==> run
Illegal parameters in fisTrapezoidMf() --> a > b
a = 0.100000, b = -0.300000, c = 1.000245, d = 0.000000
??? Illegal parameters in fisTrapezoidMf() --> a > b
Error in ==> evalfis at 81
= evalfismex(input, fis, numofpoints);
Error in ==> FPID at 123
k_pid=evalfis(,a);
规则和输入不对应
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