Ground test method for simultaneously examining inertial navigation and simulated flight

Abstract

The invention relates to a ground test method for simultaneously examining inertial navigation and simulated flight. The ground test method comprises the following steps: determining simulated flight initial parameters; acquiring initial navigation parameters of a test site at an initial moment; simulating orbit flight through a thrust curve; according to actual measurement of data output by a master-slave inertial measurement combination in real time, initial speed, position and attitude information of a test point as initial values, and gyro data and table data measured by master-slave inertial navigation equipment in real time, enabling a master inertial measurement unit and a slave inertial measurement unit to respectively use a set of navigation to carry out inertial navigation calculation; and enabling the first set of navigation to obtain a master inertial measurement integrated navigation result, and the second set of navigation to obtain a slave inertial measurement integrated navigation result for checking the navigation precision of the master-slave inertial measurement unit; therefore, three sets of navigation results are obtained, and aircraft thrust curve flight simulation completed by the third set of navigation is used for flight control. Thrust curve simulation is adopted, a real track can be simulated, real inertial measurement unit characteristics are reflected, and a ground test is more real and reliable.

Description

technical field [0001] The invention relates to a ground test method for simultaneously examining inertial navigation and simulated flight, and belongs to the technical field of launch vehicle control. Background technique [0002] In the process of aircraft development, it is necessary to verify the ground simulation flight of various control processes and inertial measurement combined products in the flight process before flight. Therefore, it is necessary to use simulated flight tests to comprehensively evaluate the aircraft guidance control process and inertial measurement combined hardware system. , The existing simulation flight methods mainly use the thrust curve or 1g simulation flight method, while the thrust curve simulation flight mainly adopts software calculation and simulation control process, without considering the real inertia group information, the inertia group accuracy cannot be assessed, and the 1g simulation flight method introduces the real Inertial gr...

AI Technical Summary

Problems solved by technology

[0002] In the process of aircraft development, it is necessary to verify the various control processes and inertial measurement integrated products in the flight process before the flight. Therefore, it is necessary to use simulated flight tests to comprehensively assess the aircraft guidance control process and inertial measurement integrated hardware system. , the existing simulated flight method mainly adopts thrust curve or 1g simulated flight method, while the thrust curve simulated flight mainly adopts software calculation and simulated control process, without considering the real inertial group information, the inertial group accuracy cannot be assessed, and the 1g simulated flight method introduces real Inertial group information, but the guidance and control process cannot be completely simulated. The two methods have their own advantages and disadvantages, and they cannot simultaneously achieve the purpose of high efficiency and the use of inertial group measured data for assessment.

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