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随着港口机械自动化、智能化快速发展,其控制系统愈发复杂,设备的安全风险也随之增大,因此对控制系统的安全要求越来越高.阐述了机械行业的有关安全标准和港口机械设备的主要安全功能.基于ISO13849标准,以可移动式防护门为例,从所需性能等级、安全相关部件、可量化参数、结构类别等方面,论述了控制系统安全性能等级的评估方法和评... 相似文献
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针对固定式平板检测设备的不足,为满足车辆安全部门野外检测的需要,开发设计了移动式检测设备系统.详细介绍了检测设备的机械结构系统和控制系统硬件的设计,并对控制系统软件功能进行了简要介绍.最后应用该系统对车辆进行检测,技术指标符合GB/T 11798.9-2001平板制动实验台检定条件. 相似文献
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针对固定式平板检测设备的不足,为满足车辆安全部门野外检测的需要,开发设计了移动式检测设备系统。详细介绍了检测设备的机械结构系统和控制系统硬件的设计,并对控制系统软件功能进行了简要介绍。最后应用该系统对车辆进行检测,技术指标符合GB/T11798.9—2001平板制动实验台检定条件。 相似文献
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自航半潜船承运特种货物的种类不断增多,营运目的地也不断增加,因此,运输货物的多样化和各地港口货物装卸方式对船舶性能提出了更高的要求.将已营运的固定式浮箱半潜船通过固定式尾浮箱改为可移动式尾浮箱是船东解决这一矛盾、扩大可营运货物范围的迫切选择.详细介绍了将营运船舶固定式尾浮箱改为移动式的工程方案设计与工程施工要点. 相似文献
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Centrifugal forces are commonly created when ships turn, which may cause a ship to capsize in a critical situation. A mathematical model has been developed to optimize the stability coefficients for ship, with the aim to prevent capsizing and to increase ship maneuverability in high-speed water craft. This model can be used to develop algorithms for control system improvement. The mathematical model presented in this paper optimized the use of multipurpose hydrofoils to reduce heeling and the trimming moment, maintaining an upright ship’s position and lessening the resistance via transverse force. Conventionally, the trimming and heeling of a ship are controlled using ballast water; however, under variable sea conditions it is sometimes difficult to control a ship’s motion using ballast water. In this case, a hydrofoil would be more stable and maneuverable than a ballast tank controlled vessel. A movable hydrofoil could theoretically be adapted from moveable aerofoil technology. This study proves the merit of further investigation into this possibility. 相似文献
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《船舶与海洋工程学报》2015,(3)
Centrifugal forces are commonly created when ships turn, which may cause a ship to capsize in a critical situation. A mathematical model has been developed to optimize the stability coefficients for ship, with the aim to prevent capsizing and to increase ship maneuverability in high-speed water craft. This model can be used to develop algorithms for control system improvement. The mathematical model presented in this paper optimized the use of multipurpose hydrofoils to reduce heeling and the trimming moment, maintaining an upright ship's position and lessening the resistance via transverse force. Conventionally, the trimming and heeling of a ship are controlled using ballast water; however, under variable sea conditions it is sometimes difficult to control a ship's motion using ballast water. In this case, a hydrofoil would be more stable and maneuverable than a ballast tank controlled vessel. A movable hydrofoil could theoretically be adapted from moveable aerofoil technology. This study proves the merit of further investigation into this possibility. 相似文献
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本文提出了一种对全回转拖轮单柄DP驾驶台控制系统设计方案。本方案对全回转拖轮单柄DP驾驶台控制系统的硬件系统、软件系统进行了系统设计。 相似文献
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秦皇岛港煤四期扩容工程选用了悬臂式取料机,并为之配置了美国AB公司的LOGIX5000系列的PLG控制器。介绍了该电器控制系统的特点、主要功能、组成,介绍了其工作原理。由此,取料机生产工艺实现了自动化控制,大大提高了生产效率。 相似文献
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为解决桥门式起重机所频发的电气故障,将PLC应用于起重机电控系统中。介绍了PLC(可编程控制器)的性能特点和桥门式起重机电控系统的工作原理,介绍了用PLC控制器实现限位保护、综合保护、过流保护的设计技巧。 相似文献
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分别介绍了用于集装箱装卸的电动吊具与液压吊具的工作原理。将两者在能耗、维护成本、故障、性能等方面进行比较。通过分析比较得出结论:全电动集装箱吊具的性能,安全能替代液压吊具进行集装箱装卸作业,且降低使用和维修成本。 相似文献
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水力测功机作为一种测量设备,其高精度、高自动化是现代需求。本文以某型水力测功机的控制系统为实例,介绍了新型控制系统的性能特点及其优越性。该新型控制系统对目前使用设备的更新换代有借鉴作用。 相似文献
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