The whole design is described in VHDL. By logic optimization, the controller has an advantage of less resource utilization and less clock delay compared with other similar controllers.

整个设计采用VHDL语言描述，经过逻辑优化，该显示控制器有着比同类控制器占用资源少、时钟延迟小等优点。

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Then the design of PI controllers is transformed into an optimization problem on the frequency domain, so as to guarantee the stability and robustness of PI controllers' parameters.

进而将比例积分控制器参数的设计问题转化为频域上的优化问题。

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