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    • 3. 发明授权
    • Power supply arrangement for electro-hydraulic control systems in mining
and civil engineering
    • 采矿和土木工程电液控制系统的电源装置
    • US4882501A
    • 1989-11-21
    • US191549
    • 1988-05-09
    • Johannes KonigMartin Reuter
    • Johannes KonigMartin Reuter
    • E21D23/12E21D23/14H02J3/14
    • E21D23/12E21D23/144H02J3/14Y02B70/3225Y04S20/222Y10T307/25Y10T307/469
    • A power supply arrangement which is intended, in particular, for intrinsically safe electro-hydraulic control systems for mining and comparable applications, in which several control units and loads controlled thereby are supplied as a group from a common constant voltage source. The voltage source has a current capacity which is smaller than the total current requirement of all the units and loads supplied by it. Each control unit has actual value current measuring device and two controllable current sources which are connected to a common potential line which can simultanously act as a data bus. The arrangement enables the respective effective dynamic current consumption and demands of the control units and loads to be ascertained to enable the available power of the constant voltage source to be determined at any time at the individual control units. The available power of the source can be utilised for an optionally time-staggered ordered control process according to predetermined priorities without overloading the voltage source.
    • 特别是用于采矿和可比较应用的本质安全电液控制系统的电源装置,其中由公共恒定电压源作为一组组合提供多个控制单元和由其控制的负载。 电压源的电流容量小于由其提供的所有单元和负载的总电流要求。 每个控制单元具有实际值电流测量装置和两个可控电流源,其连接到可以同时充当数据总线的公共电位线。 该布置使得能够确定相应的有效动态电流消耗和控制单元和负载的需求,以使得可以在各个控制单元处的任何时间确定恒定电压源的可用功率。 源的可用功率可以根据预定优先级用于可选的时间交错排序控制过程,而不会使电压源过载。