二自由度自谐式机器人动力学的研究

本文对引用弹性元件的二自由度谐式机器人的动力学进行了分析,在该模型中引入了负反馈系统。按预期的机构运动规律和系统的稳定性要求,研究了反馈放大系数的合理选择,并对构件单独和同时运动的仿真图线进行了分析。     

A DEVELOPMENT OF MICROCOMPUTER-BASED MULTICHANNEL DIGITAL THERMOMETER

In this paper, the construction and performance of the microprocessor-based multi-chan-nel digital thermometric instrument together with its deisgn and fabrication are systematicallydescribed. The principle, method and practical softwares for the entire reference-junction com-pensation processing by microcomputer and the linearization of the characteristic ofthermocouples are also exhaustively expounded with a detailed analysis of the error existing inthe thermometric instrument. The practiced result shows that the apparatus is featured with asimple construction, high accuracy and high ability of anti-disturbance. It is proved to be ofpractical value.     

V(Ⅳ—Ⅲ)、Fe(Ⅲ—Ⅱ)及Ti Ⅳ—Ⅲ)共存体系价态分析理论初探

本文对建立V(Ⅳ·Ⅲ)、Fe(Ⅲ·Ⅱ)、及Ti(Ⅳ·Ⅲ)共存体系的价态分析方法的理论基础进行了探讨,并采用氧化还原滴定法分别测定几种价态的合量,经数学处理,求得各价态元素的含量。     

钠化钒渣中钒的价态分析

钠化钒渣是含Fe(Ⅱ、Ⅲ)、V(Ⅲ、Ⅳ、Ⅴ)、Ti(Ⅲ、Ⅳ)等多种元素多种价态的试样。本文拟定了这种复杂试样中钒的价态分离与测定的程序和方法,获得了满意的结果。     

增燃速火药的弹道解法及应用

本文以钝化火药为典型,从理论和实践上研究了火药表面经化学处理后,燃速呈渐增型的增燃速火药的应用.建立了适用于此类火药的弹道计算方法,解法中引入了两个描述表面处理特征的参量,提出了用实验手段确定特征参量的方法.并且将这种火药应用在某30mm口径的火炮上,使其弹道性能得到了大幅度提高,与八十年代国外装备的同类先进火炮相比,在弹重、药室容积、最大压力、身管长度等弹道条件相同的情况下可达到相同的初速水平.     

食饵具有常数收获率的Kolmogorov系统

对食饵具有常数收获率的Kolmogorov捕食者-食饵系统进行了定性分析,得到了该系统存在稳定(或不稳定)分界线环和唯一稳定极限环的条件,以及该系统不存在周期解的条件。     

钢叉叉尖热挤压成形工艺及其设备的研究

本文论述机制钢叉尖原工艺所存在的问题。提出了脉冲式径向热挤压成形新工艺，为实现该工艺研制出脉冲式径向挤压头。阐述加工四股钢叉 叉尖的四轴成形机方案设计与结构设计应考虑的问题。最后，文章从加工质量、生产效率、经济效益与社会效益以及该研制成果的应用归纳几点结论。     

可用于累煤层露天矿山的多周期目标规划模型

本文给出了一个可应用于复合煤层露天矿短期生产计划优化的目标规划模型.模型考虑了与煤质、煤产量及开采程序合理性有关的亏损与盈利.该方法利用了带有客观地确定权重系数的目标规划加权法.文后又给出了一个能说明该模型应用于实际采矿问题的例子.     

Manufacturing''s Roel in Innovation Diffusion and Technological Substitution

Successful innovation management depends upon both, the intrinsic attributes of the new product to be marketed and the firm's internal performance like cost management, timely delivery and quality assurance. The impact of these latter aspects is frequently neglected in the design of models for supporting decision making in innovative firms.A model is outlined to study the market response of different manufacturing policies for innovative goods. It allows e.g. the evaluation of an aggressive strategy with large production capacities from the outset, or a more tentative behavior to. avoid the pressures stemming from high fixed cost and the risks of eventually idle capacity.