2009BME365RExam2_09

2009BME365RExam2_09 - Name EID Quiz 2 BME 365R Nov 5 2009 I...

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Name____________________________________ EID ______________ Quiz 2 BME 365R Nov. 5, 2009 I. Short Answer, Feedback Systems and Controllers (2 points each) The following Bode Amplitude Plot is measured for a subject while taking a TDL test: 1. Write the closed-loop transfer function: G(db) 0 ω=10 -40 db/decade
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For the negative feedback system shown above, answer these questions: 2. Closed loop gain (θ o i ) a. KG(s)/(1+KG(s)H(s)) b. 1/(1+KG(s)H(s)) c. KG(s)H(s) d. KG(s)/(1-KG(s)H(s)) 3. Assume G(s) = 1 and H(s) = 1. How large must K be to ensure that a 10% change in feed-forward gain will result in only a 0.1% change in closed loop gain? a. 99 b. 990 c. 9990 d. 99990 4. To improve frequency response. You would want to: a. make K very large b. make K very small c. make H constant, independent of frequency d. a and c e. b and c 5. If k=10 5 , G(s)= s, and H(s)= 10, then the closed loop transfer function is: a. 10 5 (s+10 6 ) b. 10 6 /(s+10 5 ) c. 0.1s/(s+10 -6 ) d. 10 -2 /(s+10 3 )
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6. Having K i in a PID controller before the feed-forward gain will: a. decrease overshoot b. decrease settling time c. eliminate steady-state error d. all of the above II. Pain and Temperature (1 point each) The first order neuron for pain and temperature synapses in the __________________. Activity is gated by _________________ in the dorsal gray matter of the spinal cord. The lateral spinothalmic tract is (crossed/uncrossed) _________________________at the level of entry. Pain and temperature project to this thalamic nucleus: ____________________________. III. Conscious Proprioception ( 1 points each) The first order neuron for conscious proprioception has its cell body in __________________. The projection of this first-order neuron is in the _________________________ to the first synapse in the __________________ nucleus at the level of the _____________________. The second order neuron crosses in the
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This note was uploaded on 12/13/2011 for the course BME 365R taught by Professor Rylander during the Spring '09 term at University of Texas.

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2009BME365RExam2_09 - Name EID Quiz 2 BME 365R Nov 5 2009 I...

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