起重机吊钩拖动绕线电动机他励双高调速系统

本文提出励磁电流可自动控制的他励式双高调速系统设计方案。系统在提升特别是在下放重物时，具有较硬的机械性；在负载１０－１００％的变化范围内，可实现最大偏差Δｎｍａｘ／ｎｍｉｎ１００％≤１０％，调速范围Ｄ≥１０；在满载运行条件下，可节约电能８０％以上。     

定向爆破拆除煤矿主井井塔

文章论述了井塔拆除爆破中，把框架承重立柱的裸露钢筋骨架失稳看作为压杆失稳以及井塔在倾斜撞地时下部不解体破坏的估算。     

Design of pole-assignment controller for systems with algebraic-equation constraint

In this paper we have studied the control of linear systems with algebraic-equation constraint. A pole-assignment controller with two-layer structure for such constrained systems has been presented. The objective of the controller is to assign the desired poles to constrained system and simultaneously force the corresponding closed-loop system to satisfy the constraint. The conditions for the existence of pole-assignment controller are discussed in different cases. The implementation algorithm of pole-assignment controller is also presented. An example is given to illustrate the validity of the method in this paper.     

控制决策的信息传输

本文讨论了在一条通讯通道上执行基本控制决策的信息传输问题。结果表明当且仅当第一条通道可模拟另一条通道的操作时，则第一条通道在任何情况下比另一条通道都有优势。     

除尘改造设计中风量平衡分析

详细说明除尘设计改造中风量的压力损失计算，风量平衡过程及通风管道直径和走向的确定。     

发动机扭矩与转速关系经验公式试验研究

在对发动机外特性曲线扭矩与转速实验数据分析的基础上，对原有的经验公式进行了分析、改进，提出了新的经验公式．由这一经验公式所计算的数值，在最大扭矩与最大功率点之间，可与实验数据拟合得很好．与原经验曲线相比，新经验曲线与实验曲线的离差可下降50％以上．     

血液流速测量中血红细胞的多普勒信号

采用双光束干涉条纹模型，用光散射理论得出了激光多普勒测速中大型散射粒子的多普勒信号幅值的表达式：用数值解法求得多普勒信号幅值随散射粒子半径变化的曲线。红血球直径即使比干涉条纹宽度大10倍，也会有良好的多普勒信号。给出了实测的血流多普勒信号。     

85W／90卡车手动变速箱油的研制

介绍８５Ｗ／９０卡车手动变速箱油的组分和添加剂，提出符合８５Ｗ／９０粘度级别的基础油，讨论影响８５Ｗ／９０卡车手动变速箱油性能的各种因素，给出符合８５Ｗ／９０卡车手动变速箱油规格的油品配方。     

抛物形量子阱的共振隧穿

文中通过求解薛定谔方程得到抛物型形量子阱的变换矩阵与透射系数。利用这一结果计算透射系数可以达到任意高的精度，最后，讨论了结构变化对抛物型量子阱的共振隧穿的影响。     

A feasibility study of a direct-mapping parallel processing method to solve linear equations in load-flow calculation

With the growing size and complexity of power systems, system analysis—such as transients calculation—takes much time. Hence, fast calculation methods are required. Although parallel processing is a hopeful method, there have been difficulties in the parallel solution of linear equations which appear in power-flow calculations by the Newton-Raphson method. This paper aims at the fast calculation of the power-flow problem by means of parallel processing. In order to improve the suitability to the parallel solution of the differential equation in transients calculation, we assume the use of a direct-mapping parallel processing machine to map directly the network of a power system onto a network of processors. Under this assumption, we propose a new parallel-processing-oriented method in which the linear equation is solved by linear iterations between nodes with Aitken acceleration. We simulate the method on three model power systems and compare this Parallel Iterative Method (PIN) with a Parallel Direct Method (PDM) which uses the banded matrix according to the number of operations required. As a result, we can expect that PIM may solve linear equations faster than PDM with m processors, although the PIM might be inferior to the PDM with m × m processors, where m denotes the half-band width of the banded matrix.