Vibration And Noise Testing And Analysis Systems To Study

As the social progress, industrial development and the aggravation of environmentalpollution, the control and administration to various kinds of industry vibration source andnoise source endanger and pollution problem have already become one demanding promptsolution main social concern and important scientific research goal.In this subject , succeed in putting up and researching and developing one set fromonly a acoustics laboratory in the Inner Mongolia Autonomous Region——Semi-anechoicroom , vibration model analyzing——ME'scopeVES software, test analytical equipmentand corresponding software mutually combine, integrated vibration and noise used tocoordinate testing and analytical system. This system is multiple functional, testsconveniently and analyses accurately that can offer reliable experiment environment andcondition for the fact that basic theoretical research, designing optimizing, the craft isimproved etc.For testing systematic function and realizing the first integration and operation of thewhole system organization key element function, the author proceeds from project actualdemand utilizing this system to do the following job:(1) Carrying on research between single static blade vibration and whole flexiblenoise to 1kw Wind-Driven Generator System.Blade model analyses course: combing the test model analyses theory and methodwith ME'scopeVES modal software, carrying on blade modal frequency and damping thanwith person who shake identifications of modal parameter, analyzed and study detailedthe structure dynamical characteristic of the blade , thus provided scientific basis forfurther optimization design of the blade and drawn the guidance conclusion deep.The Wind-Driven Generator System noise tests course: In the west Su strong windaccording to GB/T 19068 field author has carried on on-the-spot test by 2-2003. Byrationally analyzing, the qualitative conclusion and qualification basis have been obtained.(2) Carrying on experiment test and analyses research to noise of adjustable speedcentrifugal fan in Semi-anechoic room.According to GB 6882-86, ISO 3745 and GB/T 2888-1991, carried on experiment testand analyses to noise of adjustable speed centrifugal fan。Utilize half sphere test lawexamine fan whole sound power level of data processing course in Semi-anechoicchamber , have developed the data after treatment software with VB——Software ofComputing Sound Power Level.。These experiment schemes and data analyses processmethods will establish theoretical foundation and practical experience for further engagingin the structure, machinery and equipment etc. test and analyses research work. Through to put up systems and practice it, "vibration and noise testing and analysissystem "has been perfected. It is proved that this system has good prediction and commonability. So, it can be as an important scientific research tool which will solve the practicalproblem of the project and bring about an advance in scientific research in the future.