• 1. discrete-variable problem: 离散型问题

• 1.In a general case, the continuous problem and corresponding discrete form are formulated, in which the so called adjoint variable is introduced and then the adjoint equation is derived.
  在一般化的意义上，给出了连续问题及其相应的离散形式。引入伴随变量，并由此导出伴随方程。
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• 2.The problem of fuzzy variable structure control of discrete chaotic system is studied.
  研究了离散混沌系统模糊变结构控制问题。
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• 3.This paper studies the synthesis and design problem of variable structure control for a linear discrete uncertain singular system with time-delays.
  研究了一类线性离散时滞广义不确定系统的变结构控制的综合与设计问题。
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