外文翻譯--基于虛擬儀器技術的風機性能自動測試系統(tǒng)(參考版)
2025-07-28 20:13本頁面
【正文】 Instrumentation, 1999,36(7): 34~36,45(in Chinese).[8] Aerodynamics performance test procedure of ventilator GB123685[S].[9] US National Instruments Inc. LabWindows/CVI Advanced Analysis Library Reference Manual[M]. ., 2001.[10] Lu Linji, Rao Jiaming. The interactive mode platform of C/C + + faced to instrument and measurement amp。Control Technology, 2002,29(1):1 ~2.[6] US National Instruments Inc. Measurement and automation catalogue[M]. ., 2002.[7] Zhang Hesheng, Zhang Jian. Study on antiinterference technique of puterized test amp。mseis mean squared error.With this function the fluxwhole pressure curve, fluxstatic pressure curve, and fluxefficiency curve can be achieved. Structure of the softwareThe software is developed by LabWindows/CVI which is an integrated ANSI C environment for engineers and scientists creating virtual instrumentation applications[10]. With integrated I/O libraries, analysis routines, and user interface tools, LabWindows/CVI delivers everything you need for building advanced test and measurement systems. Based on modularization design method of program, 8 modules are designed in this system:1) Basic parameters setting: user can key in the fan type and environmental parameters including atmospheric temperature, humidity and pressure in this module.2) Data acquisition and control parameters setting: in this module, the sampling channel, control channel, sampling rate, signal input/output limit etc3) Main control station: this module is the main interface for operators. The visualized controls, such as power switch, testing start switch, operating mode selecting slide, fan speed selecting slide, and realtime numeric amp。orderis polynomial order。yis whole pressure, static pressure, power, and efficiency respectively。vis the speed of the airflow。Pdis the kinetic pressure。nis the rotation speed of motor。ρis the gas density of fan outlet。 is the flow coefficient。 using hydrodynamics formulas to calculate performance parameters of fans。 and 8 digital I/O lines. Two 12bit analog outputs are also featured by the 6024E[6].The fan parameters: flux, static pressure, torque and rotation speed are measured by corresponding sensors including differential pressure transmitter ( BC69 type, accuracy is FS ), static pressure transmitter (JYB type, accuracy is 1%FS), and torque amp。 data processing1 IntroductionThe parameters of fan: flux, pressure, power an defficiency not only decide working performance butalso are the basis of selecting and using blower for people. Because of the blower theory being not perfect, performance testing is the main method of acquiring these parameters. Moreover, the testing is important for testing products and designing new products. In China, traditional fan performance testing is always done manually or by singlechip which has many shortages including lower precision, heavy labor intensity, unfriendly userinterface, and so on[1~3].Therefore, according to the demands of modern times experiment technique, an automatic test and analysis system for fan performance based on virtual instrumentation tool LabWindows/CVI was designed in this paper. Combined sensor technology, puter technology and testing technique, the virtual instrumentation (VI) technology makes the most use of intelligence of
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