Control device and control method used for multi-dimensional random vibration test

• Main Authors: HE XUDONG, CUI XULI, CHEN HUAIHAI
• Format: Patent
• Language: Chinese; English
• Published: 13.07.2011
• Subjects: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; CONTROL OR REGULATING SYSTEMS IN GENERAL; CONTROLLING; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; MEASURING; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS ORELEMENTS; PHYSICS; REGULATING; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; TESTING; TESTING STATIC OR DYNAMIC BALANCE OF MACHINES ORSTRUCTURES; TESTING STRUCTURES OR APPARATUS NOT OTHERWISE PROVIDED FOR

The invention discloses a control device and a control method used for a multi-dimensional random vibration test. The device comprises a Personal Computer (PC) or an industry control computer and a VXI measurement and control system. The PC or the industry control computer comprises a display interactive module and a calculation control module. The method comprises the following steps of: setting the condition of the multi-dimensional random vibration test, and the reference spectrum matrix of a controlling point; calculating a frequency domain driving signal by the calculation control module; generating continuous time domain random driving signals, and driving the vibration of the controlled objective; forming a control spectrum matrix; calculating an error matrix between the control spectrum and the reference spectrum on each control frequency point; judging the threshold value of the error matrix; modifying the spectrum modified matrix in an iterative manner; and calculating a new random driving signal of