Use Experiment 18E to study the relationship between acceleration feedback and system sample time. Use the Live
Question:
Use Experiment 18E to study the relationship between acceleration feedback and system sample time.
Use the Live Scope display to see instability caused by excessive values of KAFB.
a. Make a table that shows the relationship between the maximum allowable KAFB with the system-observer sample time (TSAMPLE) set at 0.00025, 0.0002, and 0.00015.
b. Compare the improvement in low-frequency disturbance response (say, 10 Hz) for each of the three settings with the baseline system (KAFB = 0). (Set T Sample to 0.0001s for this part; this improves the readings from the DSA without requiring you to change the FFT sample time.)
c. Compare the results in part b with the ideal improvement gained by using acceleration feedback (see Equation 18.3).
Step by Step Answer:
Control System Design Guide Using Your Computer To Understand And Diagnose Feedback Controllers
ISBN: 9780123859204
4th Edition
Authors: George Ellis