preset input meaning in Chinese

预置输入

The fifth chapter experiments on the cushioning performance of the three sets of systems with pid / pdf algorithm . mainly on how to influence the systems cushioning performance while changing the preset input signal frequency and the load mass . and on the systems " repeatability . reappearance and the stability . additionally this chapter compares the pid algorithm with the pdf algorithm in their influence on system cushioning performance . the final experiment results testifies that the thesis successfully realizes the expected cushioning effects of the three different sets of high - speed pneumatic system
第五章对pid 、 pdf控制策略系统缓冲性能进行了实验研究，主要研究了给定输入信号频率的改变对系统缓冲性能的影响、长时间工作时系统的重复性和再现性以及不同负载质量下系统的缓冲性能的实现；同时比较了pid 、 pdf控制策略对系统缓冲性能的影响。最后实验结果表明，本课题用pid 、 pdf策略很好的实现了三套不同类型的高速气动系统的缓冲，缓冲效果是很不错的。