新型料位测量方法及其实验研究

通过对研究弹性梁受负载变化时机械波传播机理及实验分析 ,提出利用稳态正弦波和瞬态激振方法测取弹性梁的动态特性参数 ,依据振动频率变化情况来进行料位高度测量的方法 ,并设计了一种单片机智能料位测量系统。     

Wear Debris Identification Using Feature Extraction and Neural Network

IntroductionDuringtheoperationofmachinery ,weardebrisareproducedasaresultofcontactbetweenmovingsurfaces.Thecharacteristicsofweardebris (whichincludeshape ,size,concentration ,surface ,color ,etc .) provideimportantinformationabouttheconditionofmachinery ,in particularthestateofwear .However,thecurrenttechniquesforweardebrisanalysisareusuallytime consumingandcostlyduetotherequirementofanalyst sexpertiseto perform particleinspection ,morphologycharacterizationanddatainterpretation .Thus ,manytec…     

Wear Debris Analysis： Fundamental Principle of Wear-Graphy

A new wear-graphy technology was developed, which can simultaneously identify the shape and composition of wear debris, for both metals and non-metals. The fundamental principles of the wear-graphy system and its wear-gram system are discussed here. A method was developed to distribute wear debris on a slide uniformly to reduce overlapping of wear debris while smearing. The composition identification analyzes the wear debris using the scanning electron microscope (SEM) energy spectrum, infrared-thermal imaging and X-ray imaging technology. A wear debris analysis system based on database techniques is demonstrated, and a visible digitized wear-gram is acquired based on the information of wear debris with image collection and processing of the wear debris. The method gives the morphological characteristics of the wear debris, material composition identification of the wear debris, intelligent recognition of the wear debris,and storage and management of wear debris information.     

弹性金属塑料磨损表面的分形特性研究

通过对完成磨损试验后的弹性金属塑料（EMP）试样表面轮廓的测量与计算,获得EMP材料的磨损表面轮廓具有分形特性,通过比较分形维数的各种计算方法,推荐结构函数法为EMP材料磨损表面的轮廓进行分形维数计算的优选方法,并计算出了该材料在本研究条件下稳定磨损状态时的分形维数。     

PLC在胶带输送机集中控制系统的应用

主要论述了可编程序控制器（ＰＬＣ）在胶带输送机集中控制系统中的具体应用;详细阐述了该集中控制系统的软硬件设计方法及应用中应注意的问题。该系统的应用在实际中证明了在取代传统的控制装置后,提高了系统的可靠性、可维护性和可操作性。