The second one is about how to enhance the connection between system compensation and phaseplaneanalysis method through introducing PID parameter self-tuning method based on relay.
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。
2
The first one is about how to build the connection between describing function method and phaseplane method through limit cycle analysis.
第一个是关于如何通过极限环分析建立描述函数法与相平面法之间联系；
3
Furthermore, we compute the Riemann solution by using a bisection method combined with the phase-planeanalysis.