Abstract:
The three-axis six-DOF vibration test is not easy to implement due to technical difficulties, while the virtual vibration test technology can be used for making adequate prediction and analysis before and after the test, to optimize the MIMO vibration system control program and thus reduce the test risks. This paper firstly describes the composition of the three-axis and six-DOF vibration test system, and builds the models of the virtual vibration table, the virtual vibration controller, and the virtual test table, respectively. Then, a virtual vibration test system is assembled with these models. Lastly, the method for evaluating the virtual test results for different control schemes is proposed. The dynamic closed-loop simulation with the virtual vibration test system shows a satisfactory modeling accuracy within the tolerance of the global error and the local error, indicating the potential capability of the system in related analyses and calculations.