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    • 3. 发明申请
    • FORKLIFT
    • US20110297486A1
    • 2011-12-08
    • US13201468
    • 2010-02-17
    • Satoru KanekoTakashi IkimiShiho IzumiHidekazu MorikiNobuo Masano
    • Satoru KanekoTakashi IkimiShiho IzumiHidekazu MorikiNobuo Masano
    • B66F9/24H02P5/74
    • B66F9/20B66F9/24
    • [Object]To enable stable cargo handling operation and high-efficiency recovery of regenerative electric power by means of simple configuration.[Solution]In a forklift which includes linear actuators that convert rotational motion into linear motion, the linear actuators being provided in a plurality of fork parts of a cargo handling drive device, the forklift includes induction motors that drive each of the plurality of actuators provided in the plurality of fork parts, an inverter that drives the induction motors in the same manner, and a controller that controls the inverter, and the controller computes a slip frequency by using the lowest detection value among detection values from detectors that detect each of rotation speeds of the plurality of induction motors.
    • [对象]通过简单的配置实现稳定的货物处理操作和再生电力的高效回收。 [解决方案]在包括将旋转运动转换成直线运动的线性致动器的叉车中,线性致动器设置在货物处理驱动装置的多个叉部中,叉车包括驱动多个致动器中的每个致动器的感应马达 在多个叉部中,以相同的方式驱动感应电动机的逆变器和控制逆变器的控制器,并且控制器通过使用检测每个旋转的检测器的检测值中的最低检测值来计算转差频率 多个感应电动机的速度。
    • 10. 发明申请
    • ACTUATOR CONTROL DEVICE AND WORKING MACHINE EQUIPPED WITH SAME
    • 执行器控制装置和配备其的工作机器
    • US20130013159A1
    • 2013-01-10
    • US13579995
    • 2011-01-18
    • Hidekazu MorikiSatoru kanekoShiho IzumiTakashi IkimiHiroyuki YamadaNobuo Masano
    • Hidekazu MorikiSatoru kanekoShiho IzumiTakashi IkimiHiroyuki YamadaNobuo Masano
    • G05B11/32G06F17/10
    • H02P21/06B66F9/20B66F9/22F15B11/02F15B2211/20515F15B2211/20538F15B2211/20569F15B2211/275H02P21/05
    • Provided is an actuator control system capable of suppressing vibrations during regeneration. The actuator control system is provided with a target speed computing means (121) for computing a target rpm for the electric motor, a load sensing means (2) for sensing a load applied to an actuator, a torque instruction computing means (123) for computing a torque instruction for the electric motor based on the load, a current instruction computing means (131) for computing a vector instruction on a current, which is to be allowed to flow to the electric motor, from the torque instruction, a current sensing means (5a), a current conversion means (132) for converting a current to a current vector, a voltage instruction computing means (133) for computing a voltage vector instruction corresponding to a deviation between the current vector instruction and the current vector, and a voltage conversion means (134) for converting the voltage vector instruction to a voltage instruction, and further, outputting the voltage instruction to a control unit for the electric motor. The current conversion means and voltage conversion means perform the respective conversions based on the target rpm computed by the target speed computing means.
    • 提供能够抑制再生时的振动的致动器控制系统。 致动器控制系统设有用于计算用于电动机的目标转速的目标速度计算装置(121),用于感测施加到致动器的负载的负载感测装置(2),用于 基于负载计算用于电动机的转矩指令;当前指令计算装置(131),用于从转矩指令计算要被允许流向电动机的电流的矢量指令,电流感测 装置(5a),用于将电流转换为电流矢量的电流转换装置(132),用于计算与当前矢量指令和当前矢量之间的偏差相对应的电压矢量指令的电压指令计算装置(133),以及 用于将电压矢量指令转换为电压指令的电压转换装置(134),并且还将电压指令输出到用于电动机的控制单元。 电流转换装置和电压转换装置基于由目标速度计算装置计算出的目标转速执行各自的转换。