J.-H. Chin and R.-J. Jiang (Taiwan)
Dynamic modeling, hydraulics, flight simulator
The purpose of this work is, beyond the modeling of the complete system, to evaluate the effects of hydraulic drives and some selected controllers on the specific flight motions. Empirical flow rate model from previous study was used and three control methods, PID control, PWM control and PFM control were implemented. Periodic heave motion of flight simulator was first evaluated by SIMULINK. This study constructed a model of hydraulic-driven flight simulator with explicit hydraulic system, which contained an empirical flow rate model, and different controllers for electro hydraulic servo valve. Periodic heave motion was used to evaluate the performance of the controlled system. The take-off maneuver was also simulated by giving the flight simulator the commanding pitch angle and specific force requirement. Hydraulic-related shortcomings were found and the performance of different controllers were evaluated. The take-off maneuver was also evaluated by giving the flight simulator the pitch angle and specific force requirement corresponding to take-off maneuver as command. A modified performance indicator for specific force and the index of integral absolute error (IAE) for position were used to evaluate the system performance. Hydraulic-related shortcomings were found and the performance of different controllers was evaluated.
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