小功率中波发射台自动化设计方案

针对小功率中波发射台自动化设计方案进行分析,介绍了小功率中波发射台自动化设备功能,结合这些内容,总结并阐述了小功率中波发射台自动化设计方案,内容有:电子钟自动化设计方案,定点报警器设计方案,显示屏和节目监听等。

中心城市大型配电自动化设计方案与应用探讨

各个行业用电量的增加对配电系统的运行提出了更高的要求。为了保证配电系统的安全、稳定运行,进行配电自动化设计具有一定的现实意义。从配电自动化规划建设入手,对中心城市大型配电自动化设计方案与应用进行研究。

凸轮传动半自动化播种机的方案设计与分析

我国有500家左右的企业生产播种机,以谷物条播机为主,并且与畜力播种机和小型拖拉机一起使用的播种机,占主导地位。与畜力播种机和小型拖拉机一起使用的播种机占全国产量的90%多,但与之形成鲜明对比的是,国家有10家企业生产与中型拖拉机一起使用的播种机。本文通过设计凸轮曲线,实现种子,水箱的开关时间,严格控制播种颗粒数,实现有机肥的均匀定量的施加,适合于劳动密集型,家庭劳动力充足,耕地面积不是很多且土地干燥的地方,价格便宜,操作方便。

浅谈水泥厂电气自动化系统接地问题

本文通过我国目前水泥厂生产过程自动化技术应用的高速发展，说明了现代化水泥厂过程自动化控制系统可靠稳定运行的必要条件为整个系统接地方案正确、接地施工严谨可靠；同时介绍了水泥厂设计常用的系统接地方法与接地技术。说明整个综合系统的共用接地与等电位接地网是水泥厂电气自动化接地设计考虑的核心技术问题。

A simple anti-windup method for the Modified Smith Predictor

For the first-order integrating processes with long delay, a Modified Smith Predictor (MSP) was analyzed when the control signal saturated. If the MSP controller has no anti-windup scheme, the saturation effectively chops off the control input resulting in performance deterioration. Thus, a simple and effective anti-windup scheme, without an additional parameter, is designed for the MSP. Simulation results illustrate that the proposed method may achieve good performance under the nominal and model uncertainty cases.

Uncertainty Model Validation for Unstable System

Uncertainty model validation has been studied for stable system by several authors. This paper considers uncertainty model validation for unstable systems. Under a similar assumption to study for stable systam, a necessary and suffident condition is obtained for unstable uncertainty models not to be invalidated, which generalizes the results of previous study and show that the uncertainty model validation for unstable systems is again a boundary interpolation problem.