渐开线圆柱齿轮参数的测量与计算

针对单个渐开线斜齿圆柱齿轮的测绘问题，提出一种借助渐开线齿形，齿向检测仪来精确确定齿轮参数的方法，以实现原样测绘制造。     

多级圆柱齿轮减速器的速比分配

从二级减速器入手，针对不同的情况，分别推导出追求不同设计目标的速比分配方程式，进而说明了应用这些方程式解决多级减速器速比分配的方法     

弧齿锥齿轮的三维图形显示

提出一种在计算机上能立体显示弧齿锥齿轮的齿面及其轮辐的程序设计方法。首先，根据弧齿锥齿轮的齿面方程求出一个轮齿的齿面上点的数据，然后经过旋转变换便形成全部齿面的数据。其次，将三维坐标经过投影变换到平面坐标上（称为世界坐标），再将世界坐标变换到设备坐标上。最后通过绘图函数将变换后的数据用图形显示在屏幕上。本文方法为弧齿锥齿轮的切齿仿真提供了手段。本程序采用的方法是针对ＷＩＮＤＯＷＳ环境下的编程而言的，但其方法具有普遍性。     

机械应急系统研究

机械应急系统研究对于减少灾害造成的影响具有重要的意义。机械应急系统研究主要包括应急控制、应急决策、应急设计系统三方面，综述了机械应急系统目前的研究及应用现状，并给出其应急设计的定义。鉴于机械应急系统研究，尤其是应急设计研究相对薄弱和滞后，建议引起重视并加速其研究和发展。     

A Technology Readiness Level scale for iron and steel industries

The Technology Readiness Level (TRL) scale is one of the most popular maturity assessment techniques used by industrial firms worldwide. However, it is not a panacea that will work for every firm or every industry in its original form. Consequently, for the scale to be truly useful, it has to be adapted to fit the unique features of different firms and industries. In this article, we propose a revised and domain-specific TRL scale for evaluating technology maturity in iron and steel industries. This revised scale takes into account the idiosyncrasies of such firms, for example, product/process interdependencies, scaling problems, the reliance on pilot and demonstration experiments, and the fact that input and output materials are ingredients rather than components. The revised TRL scale helps managers to assess technology maturity and reduce risk by delivering better project and technology evaluations and providing a ‘common language’.     

Multilevel optimization algorithms in computer aided production control in process industry

The use of optimization techniques in production control is discussed. Two optimization problems in relation to typical process industry complexes are formulated. A modified version of Tamura's algorithm is reviewed. The promising performance of the computerised algorithms is illustrated by numerical results. DISPATCHER, a practical operative decision support system, is described.     

An objective approach to MADM with interval numbers

In ambiguous decision domain, interval numbers are always employed to model multiple attribute decision making （MADM） problems, in which attribute values of alternatives are expressed in the form of intervals. In this study, a new approach is proposed for the interval MADM problems： The interval decision matrix is transformed into definite one by comparing the interval attribute values with the base intervals of attributes; The attribute weights are determined based on the definite decision matrix; the alternatives are assessed based on TOPSIS. An example of assessing the faculty candidates （alternatives） is used to illustrate the proposed approach.     

基于PMAC的齿轮测量中心控制系统的研究

提出基于PMAC的齿轮测量中心控制系统的总体设计方案。以PMAC运动控制器作为系统的核心控制单元,高性能驱动器作为四轴伺服驱动机构,高精度光栅作为位置检测机构,采集卡为数据采集系统,采用控制器模拟量输出的方式,构成全闭环控制系统。分析运动控制器和驱动器的位置环路和速度环路的控制系统,研究控制器所采用的PID-前馈滤波伺服控制原理,对其优势进行分析。完成测量中心的软件设计和软硬件对接。最后对齿轮样板的左齿面齿形数据进行测量对比,结果表明此控制系统满足测量要求。     

基于倒谱分析的齿轮箱齿轮点蚀故障诊断研究

齿轮箱是各种机械设备上重要的传动部件,齿轮故障诊断对设备的长期安全运行起着至关重要的作用。阐述了近年来国内外齿轮传动系统故障特征提取和模式识别方法的研究现状;介绍了倒频谱分析的原理及其在齿轮箱诊断中的优点;在对齿轮箱的振动信号进行幅值谱、功率谱分析的基础上,利用倒谱分析诊断出齿轮箱中的点蚀故障,并确定点蚀故障所在的齿轮,证明了倒谱分析的有效性和可行性。     

不锈钢冶炼粉尘预还原实验研究

采用自主设计的间歇振动式斜直管移动床反应器对不锈钢冶炼粉尘进行预还原,以铁浴终还原炉产生并重整的含H2和CO的混合气体作为还原气,探索中低温条件下各因素对不锈钢粉尘预还原反应的影响. 结果表明,在气固比0.85 L/g、还原气体成分CO 0~40%(j)、振动间歇比1:2的优化条件下,预还原率较高,最高可达73.6%.