共查询到20条相似文献,搜索用时 58 毫秒
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Pyramax系列低温马弗炉以ICM作为温控系统的控制核心,实现温度的精确控制。系统是基于PLC的低温马弗炉温度控制系统设计,以PLC作为实现工具、以PID作为控制方法,对温控系统的硬件、软件结构进行了分析设计,并阐述了系统的控制原理。整个控制系统结构简单、运行稳定、便于维护,实现了对温度的精确控制。 相似文献
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衬底沉积温度是影响薄膜生长形态的关键因素.针对超高真空薄膜生长中对衬底沉积温度恒温控制需求,文中讨论了基于电阻加热和液氦制冷相结合的温控系统,详细论述了LabVIEW环境下的温控系统应用软件设计思路,该应用软件通过VISA接口与精密温度控制仪进行数据通信,依据其内置的PID控制算法,实现温度控制.测试试验表明:该系统具体良好的恒温效果,能够满足超过超高真空薄膜生长时对衬底沉积温度的温控要求,具有很高的实用价值. 相似文献
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介绍了采用集成传感器的工程机械液压系统检测仪的设计思想及硬、软件设计技术。阐述了温度、压力和流量三种参数测量电路的特点,提出并实现了三位一体的传感器设计,软件设计中采用了分频算法和非线性校正等技术。使用结果表明,该检测仪可以准确地测量液压系统参数,诊断液压系统的故障。 相似文献
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本文论述了Lonworks现场总线在火电厂电除尘器实验系统中的应用.该系统以研究电除尘器稳态工作的条件为目的,要求完成对现场所有设备的监控、以及对现场所有数据的处理等功能.由于LonWorks的应用,满足了该实验系统的稳定性、开放性的要求,使其符合现场总线控制系统的规范. 相似文献
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介绍了一个智能型振动隔离装置的计算机辅助设计系统,探讨了实现智能型设计系统的若干技术问题,对人工智能、专家系统以及CAD技术在振动隔离设计中的应用作了有益的探讨. 相似文献
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The reliability of mining systems is generally low due to their harsh working conditions. Currently, efforts for improving mining system reliability are often made in isolation. This practice could substantially limit the effectiveness of the efforts on overall reliability improvement of the mining system. To enhance the overall reliability of mining systems, an integrated improvement approach is necessary. In this paper, we developed a framework for integrated mining system reliability improvement to address this issue. In this framework, there are five major components including data integration, business process integration, hardware integration, software integration and analysis/decision integration, but we only focus on the integrated reliability analysis which is important to the analysis/decision integration. The reliability analysis considers the interactions between machines, and the impacts of design, operation, maintenance, automation and working environment on the overall system reliability. These multiple interactions present a big challenge to accurate reliability prediction. In this paper, we for the first time systematically investigated integrated reliability analysis approaches for dealing with this challenge using novel models and methods, including covariate hazard models, intelligent reliability prediction approach and complex system modeling methods. While these models and methods have found some successful applications in other industries, they in general have not been effectively used for the reliability analysis of mining systems. Our study results show that the system integration approach is applicable to mining systems and can be used for developing a computer aided integration system for the implementation of the integrated reliability improvement approach. 相似文献
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基于低功耗MSP430F149芯片设计了独立光伏电源的数据采集系统.数据采集系统由传感器、采集电路、智能控制器、液晶显示器、USB通信电缆和计算机组成.详细介绍了系统电压、电流、温度和太阳光照强度变化信号的采样电路;数据采集系统实现了多参数测量、显示,并通过用USB-UART桥接器扩展的USB串口进行串行通信,将数据送到上位机进行显示和记录.系统具有良好的数据采集精度和可靠性,功耗低,采用简便的USB串口通信,可广泛应用于测控系统中. 相似文献