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    Current control apparatus in DC motor
    1.
    发明授权
    Current control apparatus in DC motor 失效
    直流电机中的电流控制装置

    公开(公告)号：US5910715A

    公开(公告)日：1999-06-08

    申请号：US910824

    申请日：1997-08-13

    申请人： Jong Gun Kim ,  Seong Chul Huh ,  Ki Ryong Kwon

    发明人： Jong Gun Kim ,  Seong Chul Huh ,  Ki Ryong Kwon

    IPC分类号： H02P7/29 ,  H02P7/298 ,  H02K23/00

    CPC分类号： H02P7/298 ,  H02P7/291

    摘要： The present invention provides a current control apparatus for a DC motor system having a motor field coil and a motor armature and driven by the power of a battery, and a chopper transistor for controlling the amount of the current supplied to the DC motor from the battery, which current control apparatus has current amplifying means for detecting the current amount at the rear end of the motor and amplifying the current value; on-off control means for comparing the input current with the current supplied from the current amplifying means and outputting an on-off control signal according to the current amount; and a microcomputer for controlling the duty value of the pulse wave of a predetermined frequency occurring in accordance with the on-off control signal from the on-off control means and controlling the on-off time of the chopper transistor. The microcomputer performs the following steps: a step for determining whether or not an interrupt counter is an initial state, setting an initial state if yes and setting the outputting pulse limiting value of the microcomputer; a step for determining whether or not the duty value of the microcomputer output pulse is 0 in case of non-initial state of the interrupt counter; and a step for comparing the interrupt counter is not in the initial state, whether the predetermined current limit value is 0; comparing, if the predetermined current limit value is not 0, the state of said interrupt counter with said predetermined current limit value and thereby controlling an on-off state of said chopper transistor; and turning off said chopper transistor if the predetermined current limit value is 0.

    摘要翻译： 本发明提供一种具有电动机励磁线圈和电动机电枢并由电池供电驱动的直流电动机系统的电流控制装置，以及用于控制从电池供给到直流电动机的电流量的斩波晶体管 该电流控制装置具有用于检测电动机后端的电流量并放大电流值的电流放大装置; 开关控制装置，用于将输入电流与从当前放大装置提供的电流进行比较，并根据当前量输出开 - 关控制信号; 以及微型计算机，用于根据来自开 - 关控制装置的开 - 关控制信号，控制预定频率的脉波的占空比值，并控制斩波晶体管的开 - 关时间。 微型计算机执行以下步骤：确定中断计数器是否为初始状态的步骤，如果是，则设置初始状态，并设置微计算机的输出脉冲限制值; 在中断计数器的非初始状态的情况下，确定微计算机输出脉冲的占空比值是否为0的步骤; 并且用于比较中断计数器的步骤不处于初始状态，无论预定电流极限值是否为0; 如果所述预定电流极限值不为0，则将所述中断计数器的状态与所述预定电流限制值进行比较，从而控制所述斩波晶体管的导通截止状态; 并且如果所述预定电流限制值为0，则关闭所述斩波晶体管。

    Current control apparatus in DC motor
    2.
    发明授权
    Current control apparatus in DC motor 失效
    直流电机中的电流控制装置

    公开(公告)号：US5869938A

    公开(公告)日：1999-02-09

    申请号：US564759

    申请日：1995-11-29

    申请人： Jong Gun Kim ,  Seong Chul Huh ,  Ki Ryong Kwon

    发明人： Jong Gun Kim ,  Seong Chul Huh ,  Ki Ryong Kwon

    IPC分类号： H02P7/29 ,  H02P7/14

    CPC分类号： H02P7/29 ,  H02P7/291

    摘要： Current control apparatus of DC motor includes current amplifying means for detecting the current amount at the rear end of the motor and amplifying the current value; on-off control means for comparing the input current with the current supplied from the current amplifying means and outputting an on-off control signal according to the current amount; and microcomputer for controlling the duty value of the pulse wave of a predetermined frequency occurring in accordance with the on-off control signal from the on-off control means and controlling the on-off time of the chopper transistor.

    摘要翻译： 直流电动机的电流控制装置包括用于检测电动机后端的电流量并放大电流值的电流放大装置; 开关控制装置，用于将输入电流与从当前放大装置提供的电流进行比较，并根据当前量输出开 - 关控制信号; 以及微型计算机，用于根据来自开 - 关控制装置的通 - 断控制信号控制发生预定频率的脉搏波的占空比值，并控制斩波晶体管的开 - 关时间。