从模糊学角度讨论SISO闭环系统模型的物理局限性
To discuss the fuzziness of closed-loop feedback system model by fuzziology concept
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摘要: 用等效电路导出负反馈放大器Avsf、rof、fhf、fLf等解析式关系式,它能完整、准确描述不同电路反馈机制对放大器性能产生的不同影响 说明了SISO闭环反馈系统数学模型存在有物理局限性:不能体现基尔霍夫定律作用;不能给出完整准确、实用的计算关系式 用模糊数学概念讨论了由闭环方块图导出的Af和FA0 +1表达式对于负反馈放大电路,实际上只是一种模糊关系表达式Abstract: It is proved that the block diagram of SISO closed-loop system model has physics limitation,because Kirchhoff's Law can not act in it. The analytic formulas: A_(vsf),r_(of),f_(hf),f_(Lf) about the negative-feedback amplifier are given by the equivalent circuit method.The fuzziness of A_f and the formula of 1+FA_o are discussed by fuzziology concept.
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