Journal of Drive and Control (드라이브 ㆍ 컨트롤)

The Korean Society for Fluid Power and Construction Equipment (유공압건설기계학회)
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Robust Pressure Control of Variable Thrust Solid Propulsion System with Nonlinear Disturbance Observer

비선형 외란관측기를 이용한 가변추력 고체추진기관의 강인 압력제어

  • Kang, Dae-Gyeom (Missile Research Institute, Agency for Defense Development)
  • Received : 2021.10.19
  • Accepted : 2021.11.21
  • Published : 2021.12.01
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Abstract

In this paper, a mathematical pressure dynamics model for a variable thrust solid propulsion system with an electric actuator was derived from the mass conservation of gas. To solve the problem induced by modeling uncertainties in the propellant model and the dead zone of the actuator, a nonlinear pressure controller combined with a nonlinear disturbance observer was designed using a mathematical model of the system. The simulation results showed that the proposed pressure controller could reduce tracking errors compared to another conventional nonlinear controller even in situations where input disturbances were present.

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References

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