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97上控制系統期&au

97上控制系統期&au

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Unformatted text preview: Control Systems Midterm Examination Dept of Electrieat Engineering, National Tel wan University November 13. JUtJB‘ MUTE: [1] Exam starts at 2:1'IlI'T'IIi.r ends at 5:20PM (1]: NU- t'nrn in after 5:05PM ts} [latent-tor IIJowed 3%, M 49, . e @551 1. Please give two examples oénd two examples o '11 different areas within your knowledge The plant actuator controller and sensor I exists} should be identified The mom and i’EE'iu variables for the system shotiid he clearly defined. {1.5%} 2. Piesse describe as clearly as possible what feedhseit eentrol is and why it works better than open-loop eontrol‘? til-tint: hloelt diagrams, pros and cons, etc-J {15%} .Sinee a mathematical model ts always difiemnt fi'om a real plant. what 5511i ts do we have sent modeligg a real Elam? {ts-s} at” “East made—Li but 1; 4. Given a second—order dynamic system without ' suppose the step response ofthe system has to satisfy the following constraints: T _i hi: [i] ottershoets: ttl'i” _ “J“ ““i' E +. . . '1 _‘fiyfii‘i’ as We: a 14¢?- {11jr1se time {{15 sec 11.: _._ 1411:: E- et' iiii] settling time s: 2 see tel Please mark the region oftlte Emissihlg Eole locations for the dynamioa] system such that all the these specifications are satisfied. (lose) [3 l] Us} Please choose new locations ande W choice. {113%} let-HEN _ tel't “ filiafi‘fh- l" e‘l‘ met int- t 5. Consider the unity-feedback systeminFigure l,where E ml ll 3 i Ktsa+ ll Fflf'l‘E-Hj Gt.t}=—.. LIL-z]: 5" (HM {a} For K=Id, lease find the root locus of the closed-loo system for ositive a team“) ihl Please find the range of: in {a} such that the system is stable. _ifll For i=3... please find the root locus of the closed-loop systent for positive K. {:1} Please find the range of K in {e} such that the system is stable. {e} Assume that we have the same specifications as in Please choose H such that the Specifieation can best he reasonath satisfied. " E meta??? -=r “H ”iii % iii-l {f} Please derive the closedhloop pole locations in to}. one: tense at». eta-a: 141m at see} Figure 1 i E. {a} Pieeee describe the design pmeedures of amleunfl'el system. {Please explain the 5mm and fimefinn efthe PID terms as detailed as peeeiblejflflflfe} f b} Fer a PID Emmi syswm, suppose that an‘ aetuater eamraxififiis present, what will be the possible difiieedw encountered? What will'be the meaflwmfi-Pmblm? {lflflfu} l Mei-Jamie? . Jr glafiiijiifi 1e _E_EL - D" 54* a: L5 '-= . Hikers: |'+ 11" MM}- 13 Hr'fifi '5 EU”? em+ehish=e == "' -'___'— _ . LE5} Emma yew-=3 Er Heir—g: I e‘flH-J ffyre) +ffif$+*}‘fi H' ___J ___"E’__ 53mg? #5431? = 1’ rememew LL w n5 .‘ 3 e]: “ I ._ BUCI—I'fi +I5Jh1+ 53.5. I-_.. . «._I_ 3 _ ”E -FBL|]J;D 3i M+rem3+ 3. 1.4. w ”Helix 1E3:HILI:I1 'L a ie-l5 _ '— -_—: [I Lure- 5 H: I‘ ...
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