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In order to research the influence of aviation hydraulic oil temperature change on the control performance of civil aircraft actuation system, a high-performance model is established by using Matlab for simulation analysis. Through the oil temperature-parameters controller, the influence of bulk modulus, density, viscosity on the system step response can be obtained. When the actuator in the active-disconnect state, the system gain can be simulated in different temperatures, and the frequency response performance correspond to the requirement.
Inspec keywords: avionics; actuators; hydraulic systems; hydraulic fluids; aircraft; viscosity; temperature control; aircraft control; frequency response; elastic moduli
Subjects: Thermal variables control; Aerospace industry; Aerospace control; Control of electric power systems; Fluid mechanics and aerodynamics (mechanical engineering)