排序方式: 共有38条查询结果,搜索用时 15 毫秒
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HLT500高低温试验箱PLC控制系统 总被引:1,自引:0,他引:1
介绍了以PLC(可编程控制器)为核心的高低温试验箱电控系统,着重介绍了可编程逻辑控制器PLC的选择和可编程控制器的程序编译。 相似文献
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为提高HL-2A 装置辅助加热系统脉冲阶梯调制(PSM)电源的运行效率和操作可靠性,设计并实现了一种基于CAN 总线技术的远程控制通信系统。该系统采用载有SJA1000CAN 总线控制器的PCI 板卡以及TMS320F2812 微处理器分别作为上位机和下位机的通信终端,结合用户界面程序,实现了HL-2A 受控核聚变装
置辅助加热电源的远程控制,提高了其整体控制性能和操作效率。 相似文献
置辅助加热电源的远程控制,提高了其整体控制性能和操作效率。 相似文献
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The four-dimensional energy supply-demand system is a nonlinear complex system. The purpose of this paper is to introduce the model reference control method in the four-dimensional energy supply-demand system. By establishing the energy supply-demand reference system, controlling the imports in the four-dimensional energy supply-demand system to the ideal state. 相似文献
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利用可编程控制器控制平面光栅光谱仪的设计,通过给出相应的硬件及软件设计,改进控制系统,进而提高了摄谱的成功率,在节省经费基础上,使其继续地发挥教学、科研价值。 相似文献
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《Analytical letters》2012,45(3):331-342
Abstract Maintenance of a constant flow rate has been a long-standing problem with hi-vol samplers used to collect ambient aerosol. Numerous types of commercially available flow controllers are currently in use. A passive flow controller has now been developed that operates without external power or electrical circuits, and, when coupled with an AC inductive motor and cyclone blower, effectively controls flow rate between 100 and 1500 L/min. The flow controller described here controls mass flow rate rather than motor speed - the method used in commercially available hot wire anemometer electronic flow controllers - by continuously applying pressure to the outlet air stream. Thus, the controller is unaffected by such problems as brush wear and line voltage variations that are common to hi-vol samplers. In operation, the pressure drop across any constant flow resistance, such as an orifice, elbow, or length of tubing in conjunction with a diaphragm, functions as a servo mechanism to maintain a constant drop across this constant resistance. 相似文献
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给出一些由模糊蕴涵算子构造的且具有泛逼近能力的模糊控制器。在等效的意义下,它们又可归结为30种,这些模糊控制器可以用于实际的模糊控制系统之中。 相似文献
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检测模糊控制器是否有隐匿缺陷的一种方法 总被引:1,自引:1,他引:0
目的:检测模糊控制系统中的模糊控制器是否有隐匿的缺陷。方法:通过分析Zadeh算子与Einstain算子及2种广义算子之间的内在联系,给出了Zadeh算子与Einstain算子及2种广义算子之间的隶属关系,分别用各类算子检测模糊控制系统中的模糊控制器。结果:在检测模糊控制系统中的模糊控制器是否有隐匿的缺陷时,广义算子(如Einstain算子)是一种非常有效的工具。结论:广义算子(如Einstain算子)能检测出模糊控制系统中的模糊控制器是否有隐匿缺陷。 相似文献