A satellite antenna has a motor-driven positioning system where the input is the voltage to the motor: Control Systems Analysis Course Work, DCU, Ireland
| University | Dublin City University (DCU) |
| Subject | Control Systems Analysis Course Work |
QUESTION 3
A satellite antenna has a motor-driven positioning system where the input is the voltage to the motor and the output is the yaw angle of the antenna. The system has the transfer function:
The root locus plot of the system is shown in Figure Q3.
Q3 (a) The closed-loop system is required to have a percentage overshoot of 5% and a 2% settling time of |s. Determine the required location of the closed-loop dominant poles.
Q3 (b) Design a controller for the system to meet the performance specified in part (a). (/tclude a sketch of the s-plane with the open loop poles and zeros as weil as the closed-loop design point as part of your solution).
Q3 (c) Explain why derivative control action can often be difficult to successfully implement in practice.
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