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    • 4. 发明专利
    • Numerical control device and servo motor control system
    • 数控装置和伺服电机控制系统
    • JP2005339358A
    • 2005-12-08
    • JP2004159610
    • 2004-05-28
    • Fanuc Ltdファナック株式会社
    • KURAKAKE MITSUOAOYAMA KAZUNARIKOMAKI KUNITAKAAIZAWA YASUHARU
    • G05B19/18G05B19/4063G05B19/414
    • G05B19/4063G05B19/4142G05B2219/33155G05B2219/33166G05B2219/33226G05B2219/33228G05B2219/33239
    • PROBLEM TO BE SOLVED: To enable axis control required when a communication abnormality occurs in servo motor control that is driven by a plurality of servo amplifiers connected to a plurality of serial buses.
      SOLUTION: A numerical control device has the plurality of serial buses where the numerical control device and the plurality of servo amplifiers are connected by a daisy chain, and controls servo motors connected to the servo amplifiers. The numerical control device comprises: a plurality of communication control circuits 5 for detecting each communication abnormality of a plurality of serial buses; and a selection means 6 for selecting whether the communication abnormality is notified to other communication control circuits, when having detected the communication abnormality at any one of a plurality of communication control circuits. In the control of the servo motors driven by the servo amplifiers connected to the plurality of serial buses, the output to the servo amplifier connected to the serial bus where the communication abnormality occurs is made zero, and the output to the servo amplifier connected to the serial bus where the communication abnormality does not occur is maintained, thereby enabling the control of the servo motors.
      COPYRIGHT: (C)2006,JPO&NCIPI
    • 要解决的问题:当由连接到多个串行总线的多个伺服放大器驱动的伺服电动机控制中发生通信异常时,需要轴控制。 解决方案:数控装置具有数字控制装置和多个伺服放大器通过菊花链连接的多个串行总线,并且控制连接到伺服放大器的伺服电动机。 数字控制装置包括:多个通信控制电路5,用于检测多个串行总线的每个通信异常; 以及选择装置6,用于当检测到多个通信控制电路中的任一个的通信异常时,选择通信异常是否被通知给其他通信控制电路。 在由连接到多个串行总线的伺服放大器驱动的伺服电动机的控制中,连接到发生通信异常的串行总线的伺服放大器的输出为零,并且连接到伺服放大器的输出 不发生通信异常的串行总线,从而能够控制伺服电动机。 版权所有(C)2006,JPO&NCIPI