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公开(公告)号：US4341982A
公开(公告)日：1982-07-27
申请号：US165413
申请日：1980-07-03
CPC分类号： A63H19/24
摘要： A system for simultaneously and independently controlling a plurality of electric motors from a number of dispersed stations. The system operates by transmission of duty cycle modulated selected frequencies superimposed on a DC track voltage on a common power line servicing the motors. The modulation is variable and determines the speed of the motors. Transmitters are portable and designed removably to plug into a common signal transmission cable anywhere along its length without interaction. Receivers, each tuned to a specific frequency and associated with and controlling a motor, are coupled to the common power line.
摘要翻译： 一种用于从多个分散站同时且独立地控制多个电动机的系统。 该系统通过在维修电动机的公共电力线上叠加在DC轨道电压上的占空比调制选择频率的传输来操作。 调制是可变的，并确定电机的速度。 变送器是便携式的，可拆卸地设计成插入到其长度的任何地方的公共信号传输电缆，而无需互动。 每个调谐到特定频率并与电动机相关联并控制电动机的接收器被耦合到公共电力线。
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公开(公告)号：US5378157A
公开(公告)日：1995-01-03
申请号：US980669
申请日：1992-11-24
申请人： Stephen R. Russell
发明人： Stephen R. Russell
CPC分类号： G09B25/02 , G09B23/182 , G09B9/00
摘要： A device for simulating electrical characteristics of an electrical, electronic or electromechanical component comprising circuitry (21) adapted to reproduce electrical characteristics which are produced by, or may be sensed in, the component, the device (1) being configured so as to substantially resemble the component in appearance and/or size. The device may have two substantially flat opposed surfaces (3,27), one of which carries a picture (5)of the component and the other a sectional view through the component to illustrate its technical construction or operation, and/or other data relating to the component. A kit may be provided comprising a number of such devices each to simulate a component forming part of an equipment or system so as to simulate the electrical characteristics and/or performance of the equipment or system.
摘要翻译： 一种用于模拟电气，电子或机电部件的电气特性的装置，包括适于再现由所述部件产生或可能感测到的部件的电特性的电路（21），所述装置（1）被配置为基本上类似于 外观和/或尺寸的组件。 该装置可以具有两个基本上平坦的相对表面（3,27），其中一个表面具有部件的图片（5），另一个承载部件的剖视图，以说明其技术构造或操作，和/或与其相关的其他数据 到组件。 可以提供一种套件，其包括多个这样的装置，每个用于模拟形成设备或系统的一部分的部件，以便模拟设备或系统的电特性和/或性能。
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