PID控制器的本質(zhì)在于它能夠根據(jù)系統(tǒng)的過去和現(xiàn)在狀態(tài)預(yù)測其未來行為。
當(dāng)我死去時(shí)，都柏林將寫在我的心上。
The great secret that all old people share is that you really haven't changed in seventy or eighty years. Your body changes, but you don't change at all. And that, of course, causes great confusion.
無論我們承認(rèn)與否，過去始終存在。