神经网络相平面分区控制器研究与仿真

将神经网络的在线学习、即时调节功能与相平面分区的逻辑判断特性相结合提出了一种新的智能控制器———神经网络相平面分区控制器.该控制器将系统响应的基本性能与相应工况的控制作用力的划分和作用强度在相平面上建立起了实时的相互对应关系,从而使各分区内的控制参数能随着被控对象的变化在线自动调节参数,具有自适应能力.仿真结果表明,利用该方法设计的控制器闭环性能好、鲁棒性强.该方法为非线性控制提供了一种有效的控制器设计途径.

自主管理:中高职三二分段学生对班级管理模式的诉求

"中高职三二分段"自主招生增加了高职院校生源的多样性,对高职院校的学生管理工作提出了新的要求。根据高职学段学生的特点,在班级管理中灌输和实施自主管理的理念与模式,能有效提高学生管理水平。

The Double in Roxana： the Primitive and the Uncanny

I examine in this paper how Roxana explores the uncanny othemess of modem subjectivity, particularly through the figure of the double as a quintessential literary corollary of a narcissistic self whose problematic relation with oneself as well as the other is often represented in the form of the double. As an exquisite literary device that incarnates the repressed anxiety or fear of the self, which is often employed in Gothic or Romantic writings, the uncanny double works as a peculiar topos to belie and undermine the idea of modem subjectivity as an autonomous individual. Roxana deploys it with dexterity and power as a significant way to explore modem subjectivity. Amy largely plays the primitive double, while she also exhibits how the connotation of the double is historically altered. Susan as the uncanny double narcissism embodies Roxana＇s desire for a non-split self as well as self-fear, and her killing unavoidably leads to the suicidal destruction of Roxana herself.

直流调速系统神经模糊自适应控制器设计

针对传统PID控制的不足,将传统PID控制和神经网络控制有效结合,构成神经模糊自适应控制器,作为双闭环直流调速系统的转速调节器,电流调节器仍采用PID控制。同时采用分目标误差学习规则对神经网络进行训练,使系统过渡过程平稳,稳态无静差。仿真结果表明,转速调节器改进后系统的超调量明显减小,调节时间变短,动态特性和抗干扰性均有所提高。