提高微机配料精度的措施

本文是作者长期从事微机配料科研工作的结晶。主要阐述微机配料系统提高精度的措施。这些措施既含有充分的科学依据，又有切实可行的技术措施。     

微机控制配料称重系统

称重系统由微机控制以代替传统的机械衡器,可以节约设备投入,提高称重精度。本文叙述了新开发的配料称重系统装置的基本工作原理,给出了计算机主程序,总结了装置一年来运行的情况。     

提高微机称重配料系统可靠性的方法

随着自动控制技术的进一步发展，市场对微机称重配料系统的需求也越来越大。针对目前一些微机称重配料系统存在的缺点，本文详细分析、介绍了在设计微机称重配料系统中提高系统可靠性的方法     

微机自动配料系统

本文介绍了微机自动配料系统的原理和组成、具体应用情况以及系统的发展趋势。     

液体洗涤剂微机控制配料系统

采用集散控制技术研制了液体洗涤剂生产的微机控制配料系统,文章配合框图介绍其系统组成和功能特点,阐述称重方法及配料原理,并对配料系统运行方式及工艺流程进行说明。     

配料秤系统精度探析

文章从给料控制、称量装置以及校准方法等方面分析了配料秤系统精度的影响因素，结合生产实际，提出了改进措施。     

一种先进的微机配料控制系统

介绍了一种新近推出的先进的微机配料控制系统。此系统由上、下两位控制计算机及速度传感器、压力传感器、通讯接口和信号放大器等组成。能广泛应用于饲料、水泥和陶瓷等行业的原料配备，具有组成合理，控制精度高，工作可靠的特点。得到使用厂家的一致肯定。     

微机在饲料自动配料系统中的应用

本文主要介绍了为饲料加工厂研制的微机自动配料系统的软件设计思想和技巧,同时介绍了调试中所解决的问题及抗干扰措施等。     

太钢烧结配料微机控制系统

本文简单介绍了烧结配料的生产工艺,并且从系统结构,系统组态,系统功能等方面介绍了微机控制系统在钢铁企业烧结配料系统中的应用。     

基于面向对象技术的尺寸精度设计专家系统研究

本文采用先进的面向对象技术完成了尺寸精度及配合设计专家系统的建造工作,运用专家系统完成机械设计与制造是比较理想的方法。     

Modifications to improve the accuracy of a four‐ball test apparatus

The four‐ball wear test machine is one of the most widely used tribological tools in both research and industry. In general, the test geometry is self‐aligning and minimises the opportunity for random variation. Nonetheless, accurate control of the test parameters remains vital to repeatability and reproducibility. The present paper details a number of modifications to a commercially available test apparatus that have been found to improve accuracy. The applied load on some apparatus was found to vary from the correct value, probably due to frictional drag in the loading system. A feedback control loop was designed and fitted to the applied load mechanism, which resulted in significantly improved accuracy. Finally, the apparatus was fully automated, with complete computer control of all test parameters. Under this, following cleaning and assembly of the test specimens, the required test procedure could be selected from a menu of standard methods, and the computer program then adjusted the test parameters according to the method selected, greatly reducing the possibility of operator error.     

称重技术中的嵌入式系统

本文对称重技术中的嵌入式系统各个组成部分的特点及应用进行了介绍和总结。     

一种基于计算机控制的电动阀门开度显示方法

提出了一种基于计算机控制系统的电动阀门开度显示技术,用以解决一般电动阀门不带位置反馈装置时的阀位显示问题,介绍了该技术的实现方法、特点及应用效果。     

视频监控在称重管理系统中的应用

随着计算机技术及多媒体信息技术的飞速发展,视频信息技术已被广泛应用到各个领域,为了杜绝计量管理中的各种作弊现象,近年来在称重领域中也大量应用了视频信息技术,该技术的应用为企业的计量管理提供了有力的依据和保证。     

皮带定量给料机在配料系统中的设计实例

本文介绍了皮带定量给料机在水泥生产过程的配料系统设计的一个实例，这种实用设计模式也可用于化工行业或其他配料系统。作为设计中经验丰富的设计人员会根据用户的不同需求，优化设计出更多更好的设计方案，不断提高设计质量，推动配料技术的进步。     

A fuzzy expert system to increase accuracy and precision in measurement system analysis

In this paper, we have presented the first proposal to apply measurement system analysis (MSA) in fuzzy environment. Nowadays, because the quality control techniques are applied a lot in manufacturing, research and development environments, many decisions are made in processes and equipment evaluation, control, and improvement. Besides, the philosophy of measurement system analysis (MSA) depends on measurement error which hides true process capability; therefore, it must be implemented prior to any process improvement activities to minimize the measurement errors. Since the capability of each quality system is related to the accuracy of its measurement system, this research develops a novel methodology to increase precision and accuracy of MSA. To do so analyzing measurement systems under fuzziness of indices are investigated to make the environment more realistic. In this article, not only fuzzy measurement system analysis with gauge repeatability and reproducibility (GR&R) index as a triangular fuzzy number is proposed, but a fuzzy measurement system analysis a fuzzy expert system is presented to make more reliable and appropriate decisions. At the end, the applicability of the proposed methodology has been demonstrated within a case study in automotive parts industry to show impact of uncertainty in the reality.     

A novel method of determination of wire lag for enhanced profile accuracy in WEDM

Wire bending due to gap force is a major cause of imprecision in WEDM applications. To achieve higher precision and accuracy the knowledge of gap force and wire lag is extremely essential. In the present research, an in depth study on wire lag phenomenon has been carried out. A novel method to measure gap force intensity and wire lag under any given machining condition has been proposed by developing an analytical model. Experiments were carried out to verify the proposed model. Beside this, the impact of wire deflection on profile accuracy during cutting cylindrical job has been investigated. Based upon the developed analytical model an effective method has been proposed to eliminate this inaccuracy using wire lag compensation technique. The research finding will lead to better understanding of the gap force phenomena and will promote significant development in the domain of high precision WEDM.     

A new method for determining geometric accuracy in the axis of movement of machine tools

Measurements of geometric accuracy in machine tools, especially of errors in moving machine parts against their theoretical axes, are taken by means of displacement pick-ups moving along a reference standard^1,2, such as a cylindrical test specimen. This procedure is impeded by physical form errors in the standards, especially for heavy machines, as well as by adjustment errors in the standards against the machine part to be measured. These disadvantages can be avoided by using a non-material standard like a laser beam with a four quadrant photodiode as sensor and a special analysis of the measurement data.     

火电机组单神经元非线性控制方法研究

把非线性逆系统原理和单神经元自适应PID控制相结合,设计出一种新的非线性输出跟踪控制器。针对火电单元机组模型,首先用逆系统原理对该模型求取稳定逆的解,然后用单神经元自适应PID作为该系统的反馈控制器。在不同负荷下的仿真结果表明,该控制系统具有很好的抗干扰、快速响应以及稳定跟踪能力。