The Design And Research Of Hydraulic Drive Test Platform For Ground Simulation Of Aircraft

During the development of modern large-scale civilian aircraft, the ground simulation test of thehydraulic system is an important means to ensure the flight safety of the aircraft. By building anaircraft iron bird bench with the proportion of1:1in the indoor, aircraft semi-physical simulation testwith the installation of hydraulic components and piping is completed in this article. The aircraftengines are simulated by using the drive unit of the iron bird in the ground simulation test, while themain hydraulic pumps provide hydraulic energy for hydraulic load of the system.The design and research of hydraulic drive test platform for ground simulation of aircraft iscompleted in this article. By analyzing the functional requirements of the test platform, the design ofthe mechanical overall structure of the test bench and the alternatives of the control system arecompleted. The analysis of the key components is carried on by using the finite element software.Analysis and research of the algorithm of space measurement and the system monitoring software arecompleted.The strength and stiffness of key components in the mechanical structure are checked throughmechanical analysis and finite element static calculation. By analyzing the driving test stand noise,excitation frequency is obtained which is used to check the key components of the modal analysisresults. On the base of the laser tracker, a method for field installation environment layout andmeasurement is proposed. By constructing a coordinate system mapping relationship, the threedimensional coordinate conversion equations are established. By solving the optimal solution ofseven-parameter based on the method of least squares iterative, the measurement and calculation ofthe unknown coordinates are achieved. And then the feasibility of this method is verified usingsimulation in MATLAB. Design and development of the monitoring software in the IPC arecompleted to achieve the computer automatic composite control of main hydraulic pump.