一种大尺寸直角尺的精度检测与修复方法

介绍了工厂对大尺寸直角尺精度检测与修复常用的在平台上三直角尺两两互检的方法与原理。在确定直角尺误差时，该方法的缺点是需要逻辑推理，较难掌握，功效较低。为此，提出建立一个数学模型，用解数学方程的方法来代替逻辑推理，确定直角尺的误差。     

Dynamic anti-windup based control method for state constrained systems

Based on the dynamic anti-windup strategy, an alternative control methodology for state constrained systems is presented. The proposed method is an a posteriori approach for state constrained systems, which is differentiated from the usual a priori approach. That is, first a linear controller is designed to show a desirable nominal performance by ignoring state constraints. Then, an additional compensator is introduced to account for state constraints. By minimizing a reasonable performance index, a dynamic compensator is derived explicitly, which is expressed in plant and controller parameters. The proposed method not only provides a graceful performance degradation, but it also guarantees the total stability of the resulting systems. An illustrative example is given to show the effectiveness of the proposed method.     

Software Process and Product Improvement: A Historical Perspective

In this paper, a historical overview of significant attempts to get over the software crisis is presented. In particular, we trace the development of lifecycle models and information systems development methodologies during the last four decades. Finally, we explore the role of measurements and outline current and future works leading to process and product improvement.     

反应堆堆芯热功率测量方法及其误差分析

通过建立精确的数学模型 ,提出了一种测量核电站压水反应堆堆芯热功率的方法 ,并对该方法进行了误差分析。基于上述方法的KME系统与校验SAPEC系统的比较结果表明 ,该方法完全可以用于核电站堆芯热功率的测量     

测控系统中软件抗干扰方法的应用

介绍了测控系统中，根据各点采样数据似合出线性函数并过滤采样数据的干扰以提高系统可靠性。     

电力设备绝缘的数字信号处理技术

外施交流电压是电力设备绝缘检测的一种重要的方法，文章论述了交流电压下电力设备绝缘计算机检测下数字信号的处理技术。     

激光三角法位移传感器测头设计

本文以直射式激光三角测头为例,导出了满足Scheimpfiag成象条件下的待测面位移与象位移间的准确关系,作为仪器结构参数设计的基础,并对提高测量精度和实用性的各项改进设计进行了分析。     

力矩电机自动调节的大量程数显卡卷尺测长技术

本文在数字显示卡尺技术和力矩电机技术的基础上，把卡尺量程扩大到20米做成卡卷尺，运用力矩电机作为卡卷尺的卷紧机构和保证光栅编码器标尺光栅平直度的施力元件，发展了力矩电机自动调节的大量程数字显示卡卷尺测长技术，同时为力矩电机设计了线性自动调节电流源，并在实际应用中检测了其测量精确度。     

高精度七米激光测长机的误差补偿技术

简要介绍一笔者研制的大型计量测试仪器－“高精度七米激光测长机及其计量管理系统”的工作原理，详细地介绍了其测量过程中采用的误差补偿技术并进行实验验证。     

Error Analysis for High-precision 7m Laser Measuring Machine

This paper introduces a high precision 7m laser measuring instrument developedby the anthors and its operating principle,and systematically analyses the errors havinginfluence on the performance of the measuring instrument.Error analysis and actualverification indicate that all the characteristics reached or exceeded the original designspecifications.