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直流接触器作为应用广泛的电气开关之，其生产和需求数量巨大，在正常使用过程中，电磁铁线圈直通电工作，产生电磁吸力，铁芯和衔铁吸合，带动动、静触头闭合，接通电路。在上述过程中，线圈本身存在电阻，持续消耗电能，这是直流接触器主要的使用成本之，浪费了大量的能源和财产，因此，如何降低直流接触器的工作耗能，是研究直流接触器的关键点和重难点。直流接触器永磁操动机构是种在传统直流接触器电磁操动机构基础上发展而来，将电磁操动机构和永磁铁相结合的混合型操动机构，不单单使用原有的电磁吸力和弹簧反力作为铁心吸合与分离的动力，而是加入了永磁铁对铁心的吸引力，采用储能电容充放电提供合闸、分闸电力，通常称之为“电磁操动，永磁保持，电子控制”。在分、合闸运动过程中，电磁吸力，永磁吸力与弹簧作用力共同作用，在稳定工作过程中，采用永磁吸力代替之前的电磁吸力，保持衔铁与铁芯心的吸合状态。则，永磁操动机构大量节约了保持线圈的电能消耗，节能。二则，永磁体保持吸合与电磁吸合相比，噪音低，无污染。三则，永磁操动机构剔除了电磁机构中系列复杂繁琐锁扣保护装置，大大提高了接触器操动机构的工作可靠性，降低了生产工序和成本，减小了接触器的体积。 [1]
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3. 虚拟仪器技术在开关电器参数检测中的应用
随着虚拟仪器技术的发展与成熟，虚拟仪器技术越来越多的被应用在继电器、接触器等开关电器的测试中。虚拟仪器技术是种以软件为中心的新型测量技术，它可以大大降低试验仪器成本。测量功能主要由软件编程来实现，在以工控机为核心组成的硬件平台支持下，通过lab view软件开发平台编程实现仪器的测试功能。lab view应用库中加载了很多不同用途的测试与控制模块，用户可以在lab view应用程序下直接调用相关模块即可实现多种测试功能。与传统的汇编、vb、vc等文本编程语言相比，lab view软件程序的编写非常简单。在lab view环境下安装数据采集卡的驱动后，即可调用采集卡的功能函数实现对采集卡的控制、数据的采集、处理、显示等功能。
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3rt60151kf41
3rt60151kf42
3rt60161ab01
3rt60161ab02
3rt60161af01
3rt60161af02
3rt60161ag01
3rt60161ag02
3rt60161ah01
3rt60161ah02
3rt60161ak21
3rt60161ak22
3rt60161am21
3rt60161am22
3rt60161an21
3rt60161an22
3rt60161ap01
-/gbacggc/-