Servo system controller
    22.
    发明授权
    Servo system controller 有权
    伺服系统控制器

    公开(公告)号:US06377012B1

    公开(公告)日:2002-04-23

    申请号:US09744695

    申请日:2001-01-29

    申请人: Nobuyasu Takaki

    发明人: Nobuyasu Takaki

    IPC分类号: G05B1910

    摘要: A servo system controller which has a sequence controlling section 2 and a servo controlling section 3, employs not only a current position of a servo motor but also other servo control data or a sequencer device as comparison data, and executes a comparing process for compares whether or not respective comparison data are in respective detection ranges to then output respective comparison results, increase and variation of a response time can be prevented until the comparison results are output from the change of the comparison data. A comparing process table memory 14 is provided in the servo controlling section 3, and the comparing process is executed in synchronism with a calculation period of the servo controlling section 3, and a detection signal is output while the comparison data is within a detection range. In a machining apparatus utilizing the servo system controller, a tact time can be reduced without large increase of a cost. Also, if the increase and variation of a decision process time have an influence upon the machining precision, reduction in the machining precision can be prevented.

    摘要翻译: 具有序列控制部分2和伺服控制部分3的伺服系统控制器不仅使用伺服电动机的当前位置,而且还使用其他伺服控制数据或定序器装置作为比较数据,并且执行比较处理以比较是否 或者不是各自的比较数据在相应的检测范围内,然后输出相应的比较结果,可以防止响应时间的增加和变化,直到从比较数据的改变输出比较结果。 比较处理表存储器14设置在伺服控制部分3中,并且与伺服控制部分3的计算周期同步地进行比较处理,并且在比较数据处于检测范围内时输出检测信号。 在利用伺服系统控制器的加工装置中,可以在不大量增加成本的情况下减少节拍时间。 此外,如果决定处理时间的增加和变化对加工精度有影响,则可以防止加工精度的降低。

    Fully-integrated VCM driver with controlled and predictable Class-AB linear operation
    23.
    发明授权
    Fully-integrated VCM driver with controlled and predictable Class-AB linear operation 有权
    完全集成的VCM驱动器,具有可控和可预测的AB类线性操作

    公开(公告)号:US06374043B1

    公开(公告)日:2002-04-16

    申请号:US09681407

    申请日:2001-03-30

    IPC分类号: G05B1910

    摘要: A circuit (41) to provide drive voltages to a voice coil motor (VCM) (50) of a hard disk drive (10) has identical high and low side drivers (42, 44, 46, and 48) connected to the VCM (50). Each driver has an output FET (52) selectively connecting the VCM (50) to a control voltage (58). A Class-AB output pair (54 and 54′) in parallel with the output FETs (52 and 52′) provides continuous and linear Class-AB operation at the output node (60) around the crossover point, while the output FETs (52 and 52′) are kept not conducting. This approach offers extremely low level of crossover harmonic distortion. Each FET of the Class-AB pair (54 and 54′) is connected to a biasing FET (56 and 56′) to provide the desired Class-AB quiescent current. Preferably the output FET (52), quiescent current controlling FET (54), and biasing FET (56) are fully integrated.

    摘要翻译: 向硬盘驱动器(10)的音圈马达(VCM)(50)提供驱动电压的电路(41)具有与VCM连接的相同的高侧和低侧驱动器(42,44,46和48) 50)。 每个驱动器具有选择性地将VCM(50)连接到控制电压(58)的输出FET(52)。 与输出FET(52和52')并联的AB类输出对(54和54')在交叉点周​​围的输出节点(60)提供连续和线性的AB类操作,而输出FET(52 和52')保持不导通。 这种方法提供极低的交叉谐波失真水平。 AB类对(54和54')的每个FET连接到偏置FET(56和56'),以提供所需的AB类静态电流。 优选地,输出FET(52),静态电流控制FET(54)和偏置FET(56)完全集成。

    Method of controlling a multi-axis machine tool
    24.
    发明授权
    Method of controlling a multi-axis machine tool 失效
    多轴机床的控制方法

    公开(公告)号:US06249102B1

    公开(公告)日:2001-06-19

    申请号:US09077849

    申请日:1998-06-04

    IPC分类号: G05B1910

    摘要: A method for the control of a multi-axis machine tool, in particular for the regulation of the position of the individual axes as a function of at least one other axis or external parameters. The method includes providing a coupling function for each axis so that the coupling function can be programmed by the operator of the machine tool and activating the coupling function only after all axes involved in the coupling have been referenced.

    摘要翻译: 一种用于控制多轴机床的方法,特别是用于调节作为至少一个其它轴或外部参数的函数的各个轴的位置。 该方法包括为每个轴提供耦合功能,使得耦合功能可以由机床的操作者进行编程,并且仅在参考了所有耦合的所有轴之后激活耦合功能。