铁路信号设备SPD故障安全模式的研究

阐述铁路信号设备SPD的两种故障状态,为确保故障安全模式,研究降低SPD故障短路模式发生的方法。对SPD关键元件压敏电阻进行改进,通过掺料配比、采用反絮凝剂作为分散剂、调整烧结温度方式等工艺流程控制,改良产品特性,提高其稳定性,有效降低压敏电阻故障状态为短路模式的发生概率,确保铁路信号设备的安全运行。

在组态环节提高控制系统可靠性的探讨

控制系统可靠性受到各种因素影响,用户在控制系统选择时,强调控制系统软、硬件的可靠性,在组态调试环节往往按设计意图实现功能,忽视了通过组态提高系统可靠性,造成资源浪费,本文从控制系统组态优化经验入手,分析以组态提高系统可靠性的方式方法。

在组态环节提高控制系统可靠性的探讨

控制系统可靠性受到各种因素影响,用户在控制系统选择时,强调控制系统软、硬件的可靠性,在组态调试环节往往按设计意图实现功能,忽视了通过组态提高系统可靠性,造成资源浪费,本文从控制系统组态入手分析以组态提高系统可靠性的方式方法。

Exponential Stability of a Robot with Safety System

This paper presents the analysis of exponential stability of a system consisting of a robot and its associated safety mechanism. The system have various modes of failures and is repairable. The paper investigates the nonnegative stead-state solution of system,the existence of strictly dominant eigenvalue and restriction of essential spectrum growth bound of the system operator. The essential spectral radius of the system operator is also discussed before and after perturbation. The results show that the dynamic solution of the system is exponential stab＇flity and converges to the steady-state solution.