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28 October 2006 Design of MIMO random vibration control system
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Multi-Input/Multi-Output (MIMO) random vibration test control technique is a key for reliability and environment test of large and complicated structures. It is very important to qualify the reliability of the products. MIMO random vibration testing control methods are discussed, and the whole control strategy, the control algorithm and the relevant technologies are introduced in this paper. The MIMO random vibration testing control software is developed under LabWindows/CVI. The prototype of the dual-shaker random vibration testing control system based on virtual instrumentation is composed of the control software and the data acquisition cards manufactured by NI Company. The design of this system and the closed loop control method is expatiated. The actual test is performed on the system. The test results are compared with the data measured by the HP35670 spectrum analyzer, and the coupling problem of MIMO, the resonance and anti-resonance problems are emphasized to discuss. The practical results show the control algorithm is correct under certain conditions, and the control results reach the test requirements.
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Jianhua Ye and Chuanri Li "Design of MIMO random vibration control system", Proc. SPIE 6358, Sixth International Symposium on Instrumentation and Control Technology: Sensors, Automatic Measurement, Control, and Computer Simulation, 63581O (28 October 2006);

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