Construction of virtual vibration testing platform for spacecraft

As the spacecraft vibration testing based on a shaking table has some defects, such as long time cycle, high cost, easy to produce over-testing and under-testing, a virtual vibration testing platform was built based on virtual reality technology. A sine vibration controller model of the electrical vibration table was built by system simulation software LMS AMESim and a multi-body model for the vibration table was established based on the multi-body simulation software LMS Virtual. Lab Motion. Furthermore, the model of electromagnetic actuator in the vibration testing system was realized using the simulation software LMS AMESim, and the co-simulation of vibration testing system was carried out by uniting the multi-body model and LMS AMESim model. In combination of the vibration control system, electromagnetic actuation system and shaking table test mechanical system, the whole virtual vibration test system was implemented. Finally, a virtual sine vibration test for a box & thin specimen was performed by using the proposed system. Test results show that the virtual vibration testing platform based on the electrical and mechanical coupling modeling method can provide test environments for test analysis and virtual vibration test because it considers the coupling effect of the test-piece and the electrical vibration table.