【摘要】 本文定义了定性量及定性运算 ,对模型中含有不确定性因素的非线性系统给出了基于定量模型的定性控制方法 .文中首先给出控制的“期望曲线” ,然后对对象输出及其它重要项做定性划分 ,而后利用不精确模型 ,运用定性运算 ,求取控制的定性值以使对象输出逼近“期望曲线” ,最后实时控制时对控制量自学习调整 .所设计系统品质优良 .更多还原

【Abstract】 This paper defines qualitative value and qualitative arithmetic,offers a qualitative control method based on quantitative models for a nonlinear plant with uncertain factor.First of all,the “expected trajectory” of the plant output is introduced,then the qualitative partitions for the plant output and other important items are made.Secondly,the qualitative values of control,which make the plant output close with the “expected trajectory”,can be obtained by qualitative arithmetic with the imprecise models.Finally the control values can be self learned and on line adjusted.The proposed controller provides a good performance for a nonlinear plant.\;更多还原