This work aims to produce a detailed simulation model of an aileron actuation system based on an electro-hydrostatic actuator which takes into account the several specificities of each concerned physical domains. This model includes all the subsystems from the electrical grid to the aileron, comprising the global control topology.
This modelling is developed in the Matlab/Simulink environment, and therefore takes advantage of the different physical toolboxes of the Simscape library. It enables us firstly to represent the effects of the inertia, of the mechanical and hydraulic friction and of the electrical impedances. Secondly, a specific effort is done regarding the nonlinearities of the system. Thus, the model integrates both those due to the functioning of the selected electrical (diode bridge, IGBTs inverter, fixed DC voltage) and hydraulic (internal sub circuit with accumulator, check valves and pressure relief valves) components, and those stemming from the manufacturing defects of the parts, as the rotational and translational nonlinear friction, the backlash effects, the dead zones and the loss in the hydraulic pipes. The control saturations, permitting safe working conditions, are also taken into account, and enable us to analyse their repercussions on the system. The results are presented as plots and as 3D Visualisation.
The electro-hydrostatic actuator included in the actuation system will be validated using the data measured on the prototype developed at the McMaster University. Once the validation done, the global model will be used to design the position control scheme as well as to test the benefits of the integration of new component topologies.
| Date | 14 Jan 2013 |
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| Original language | French |
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| Awarding Institution | - École de technologie supérieure
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| Supervisor | Louis-A. Dessaint (Supervisor) |
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Gendrin, M. (Author),
Dessaint (Supervisor),
14 Jan 2013Student thesis: Master's thesis › Master in Engineering: Electrical Engineering