第二个是关于如何通过介绍继电器型PID参数整定方法，促进系统校正与描述函数分析方法之间联系。
The second one is about how to enhance the connection between system compensation and phase plane analysis method through introducing PID parameter self-tuning method based on relay.
在对双继电器相关函数的讨论的基础上，提出了一种基于 FPGA的二维相关测速算法。
On the basis of discussion about dual-relay cross correlation function, a two-dimensional correlation speed measurement algorithm based on FPGA is put forward.
文中推导淬火炉的热传递函数，介绍了具有一定带宽的继电器特性控制方法和STD总线单片机系统的具体结构。
Transmit fuction of heat was derived in this paper, A method of controlling characteristic with some band width and the structure of the STD BUS microcontroller w…
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