무인 비행선 자동비행제어법칙 PILS(Processor-In-The-Loop Simulation)연구
PILS Study for Autopilot on Unmanned Airship
무인비행선 자동비행제어법칙 항공공학 항공우주공학;
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The research on Autopilot on Unmanned Airship is conducted to verify the real time simulation of the control law of the unmanned airship and the result will be used to validate the feasibility of the HILS and the test flight of the unmanned airship with a computer system. In this paper, the governing equation of motion of airships are deriven and are calculated the linearized trim equations and are analyzed response modes. By using the PID method, airship longitudinal/lateral controllers which are required 5% overshoot, no steady state error, and 250sec settling time are designed. Altitude hold and following tracking line autopilot system was built as the same requirement. Linearized airship Dynamics are discretized into each sampling time for real time simulation using DSP board. PILS(Processor-in-The-Loop Simulation) is conducted in three DSP board and results of the real time simulation are displayed. As a result, I validate that each module of the designed autopilot systems are operating in a selected sampling time as a real time simulation. Furthermore, the each result by the real time simulation and by the non-real time simulation are almost identity.
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