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ASE 370L Take Home Test 2 - ASE 370L Take Home Test 2 April...

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ASE 370L Take Home Test 2 April 8, 2010 Drew Rosecrans DCR544
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UAS Controller Design The controller that is to be designed is for the yaw angle autopilot of an uninhabited aerial system (UAS). Here is a simplified lateral dynamics model of the aircraft for which the controller is to be designed. This is in the level flight cruise condition and assuming constant aerodynamic coefficients. Based on the flight conditions, it is given that, =- - γ 2s 2 , =- . - α 0 75s 1 , = . - ν 9 85s 2 , = . - κ 0 03s 1 , and = . - λ 0 5s 1 . Now the model for the rudder is The system is model as shown below in Figure 1. Where the input is the desired yaw angle, Φd , and the output is the actual yaw angel, Φ , with a unity feedback. Figure 1 The root locus methods will be used to find the optimal controller that meets all of the design specifications. Those specifications being all related to a unit step input of = ° Φd 1 . 1. Zero steady-state tracking error to the step input 2.
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