[理工] [自控]-幾題觀念題

看板Grad-ProbAsk作者 (t5d)時間14年前 (2010/03/25 17:56), 編輯推噓2(203)
留言5則, 3人參與, 最新討論串1/1
都是是非題 有些是題目意思看不懂 有些是觀念不清楚 1.Linear and nonlinear frictions will generally degrade the steady-state error of a control system 2.The location of the roots of the characteristic equation in the s-plane will give a definite indication on the maximum overshoot of the transient response of the system 3.The slope of the magnitude curve of the Bode plot of L(jw) at the gain crossover usually gives an indication of the relative stability of the closed-loop system 4.Given the following characteristic equation of a linear control system, increasing the value of K will increase the frequency of osillation of the system. s^3 + 3s^2 + 5s + K = 0 -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 125.224.67.39

03/25 18:00, , 1F
第4題 是要求 震盪頻率? 所以調整K使羅斯表發生特例二
03/25 18:00, 1F

03/25 18:00, , 2F
不確定..
03/25 18:00, 2F

03/25 18:03, , 3F
第4題 畫 根軌跡 k,會發現 k 越大 則 wn 越大
03/25 18:03, 3F

03/25 18:06, , 4F
第三題 系統相對穩定度 跟 斜率沒關係才對
03/25 18:06, 4F

03/26 13:50, , 5F
感謝~
03/26 13:50, 5F
文章代碼(AID): #1BgpCvup (Grad-ProbAsk)