该文针对多源时变干扰影响的双三相永磁同步电机系统,研究其基波平面内的调速控制问题和谐波平面内的谐波电流抑制问题。首先,在基波平面采用非串级控制结构,通过构造广义比例积分观测器(generalized proportional integral observer,GP...该文针对多源时变干扰影响的双三相永磁同步电机系统,研究其基波平面内的调速控制问题和谐波平面内的谐波电流抑制问题。首先,在基波平面采用非串级控制结构,通过构造广义比例积分观测器(generalized proportional integral observer,GPIO)估计转速环的多源快变干扰;然后,针对q轴电流的过流保护问题,在传统比例微分反馈控制器的基础上利用障碍函数设计思想,结合干扰估计信息,得到基于GPIO的电流约束复合控制器;其次,在谐波平面,通过设计2个GPIO精准估计电流环的多源快变干扰,并与比例反馈控制器结合形成复合控制器来抑制2个电流环中的谐波电流。最后,给出严谨的稳定性分析,并通过对比实验验证所提方法的有效性。展开更多
维吾尔语对许多新兴事物及概念的称名,采用了将两个表示事物的名词直接组合的构词方式。这样的做法固然满足了对语言表达的实际需求,但其词义理据也从清晰走向了模糊。文章以物性结构理论探讨了现代维吾尔语偏正复合名词的词义理据及其...维吾尔语对许多新兴事物及概念的称名,采用了将两个表示事物的名词直接组合的构词方式。这样的做法固然满足了对语言表达的实际需求,但其词义理据也从清晰走向了模糊。文章以物性结构理论探讨了现代维吾尔语偏正复合名词的词义理据及其变化,发现不同物性角色参数的激活能够为解释维吾尔语偏正复合名词中前置名词其功能变化所存的连续统提供解释路径。具体来说,前置名词不仅可以表示与核心名词之间的逻辑关联,还可以描述核心名词所特有的属性特征。The Uyghur language uses the direct combination of two nouns for many new things and concepts. Although this approach satisfies the actual needs of language expression, its lexical motivation has also changed from clear to vague. Based on the theory of qualia structure, this paper discusses the word meaning and the changes in modified compound nouns in modern Uyghur. It is found that the activation of different qualia role parameters can provide an explanation path for the functional continuum of prenouns in modified compound nouns. In particular, the prenoun can not only represent the logical relation with the core noun but also describe the attributes unique to the core noun.展开更多
文摘该文针对多源时变干扰影响的双三相永磁同步电机系统,研究其基波平面内的调速控制问题和谐波平面内的谐波电流抑制问题。首先,在基波平面采用非串级控制结构,通过构造广义比例积分观测器(generalized proportional integral observer,GPIO)估计转速环的多源快变干扰;然后,针对q轴电流的过流保护问题,在传统比例微分反馈控制器的基础上利用障碍函数设计思想,结合干扰估计信息,得到基于GPIO的电流约束复合控制器;其次,在谐波平面,通过设计2个GPIO精准估计电流环的多源快变干扰,并与比例反馈控制器结合形成复合控制器来抑制2个电流环中的谐波电流。最后,给出严谨的稳定性分析,并通过对比实验验证所提方法的有效性。
文摘维吾尔语对许多新兴事物及概念的称名,采用了将两个表示事物的名词直接组合的构词方式。这样的做法固然满足了对语言表达的实际需求,但其词义理据也从清晰走向了模糊。文章以物性结构理论探讨了现代维吾尔语偏正复合名词的词义理据及其变化,发现不同物性角色参数的激活能够为解释维吾尔语偏正复合名词中前置名词其功能变化所存的连续统提供解释路径。具体来说,前置名词不仅可以表示与核心名词之间的逻辑关联,还可以描述核心名词所特有的属性特征。The Uyghur language uses the direct combination of two nouns for many new things and concepts. Although this approach satisfies the actual needs of language expression, its lexical motivation has also changed from clear to vague. Based on the theory of qualia structure, this paper discusses the word meaning and the changes in modified compound nouns in modern Uyghur. It is found that the activation of different qualia role parameters can provide an explanation path for the functional continuum of prenouns in modified compound nouns. In particular, the prenoun can not only represent the logical relation with the core noun but also describe the attributes unique to the core noun.