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批踢踢實業坊 Examination 板

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[問題] 控制學問題

Oct 8th 2014, 22:42, by gg6gg

作者gg6gg (*jacky encore!)

看板Examination

標題[問題] 控制學問題

時間Wed Oct 8 22:42:15 2014

想請問一題控制學問題, 是張碩跟詹森老師合著的書裡的 For the plant transfer function G(s)= E(s)/U(s), design a unity PID feedback compensator U(s)=D(s)[R(s)-E(s)] such that s0 = -1 +/- j are closed-loop poles, where G(s)= 1/(s+2)(s+3), D(s)=Kp+Ki/s+Kd*s=Kd*(s^2+bs+a)/s with Kd > 0, a= Ki/Kd > 0, and b=Kp/Kd >0. Additionally, it is also required that the steadt-state error to a unity ramp input is ess=1/10. FInd a, b, and Kd to meet the requirements 解答的開路轉移函數直接是G(s)*D(s) 但我看不太懂為什麼是這樣... 想知道有沒有人會解這題或是可根據題意畫出方塊圖謝謝!! -- ※ 發信站: 批踢踢實業坊(ptt.cc), 來自: 220.143.12.15 ※ 文章網址: http://www.ptt.cc/bbs/Examination/M.1412779338.A.971.html

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