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    • 4. 发明公开
    • Method and system for controlling a machine tool such as turning machine
    • 用于控制机床等方式和系统,如电动机
    • EP0328972A3
    • 1990-05-23
    • EP89101941.6
    • 1989-02-03
    • THE CROSS COMPANY
    • Migda, Kenneth F.
    • G05B19/18
    • G05B19/184G05B2219/34042G05B2219/41337
    • A method and system (10) for controlling radial movement of a machine tool, such as a turning machine, relative to a workpiece (11), is characterized by a digital filter (70, 72, 74) which produces a filtered final control signal which is a function of both radial position and velocity of a cutting tool (24) of the turning machine. The method and system (10) utilizes a tool position feedback signal which is compared with an initial control signal to produce a signal which is then digitally filtered to, in turn, provide the resulting final control signal. The surface geometry of the workpiece (11), such as a piston, is determined by a data matrix of angular, axial and radial position coordinants of the tool. An angular position signal representative of the angular position of the workpiece (11) and an axial position signal representative of the axial position of the cutting tool (24) relative to the workpiece (11) are both generated. The angular and axial position signals are correlated with the data matrix to generate the initial control signal. The control loop of the system (10) is closed within the software portion of the system (10) for increased reliability. Also, there is no need for velocity loop feedback with a velocity transducer. Feed forward compensation is performed in the software portion of the system (10). The digital filter (70, 72, 74) is preferably implemented with a digital algorithm on a digital signal processing microprocessor of an axis control board (38). The digital filter (70, 72, 74) is either an infinite-impulse-response type (i.e. recursive) or a finite-impulse-response type (non-recursive) from which control, such as PID control, can be derived.
    • 8. 发明公开
    • APPARATUS FOR CONTROLLING ACCELERATION AND DECELERATION FOR SERVO CONTROL
    • VORRICHTUNG ZUR REGELUNG DER BESCHLEUNIGUNG UNDVERZÖGERUNGFÜRSERVOREGELUNG。
    • EP0378708A1
    • 1990-07-25
    • EP89908522.9
    • 1989-07-24
    • FANUC LTD
    • HARA, Ryuichi,Room 7-206 Fanuc Manshonharimomi
    • G05B19/407G05D3/12
    • G05B19/416G05B2219/34042
    • An apparatus for controlling acceleration and deceleration for servo control capable of reliably suppressing vibration of a servo motor that is a source for driving machines. The apparatus for controlling acceleration and deceleration is provided with the same number of acceleration/deceleration control units as the servo motors provided for the machine, and each acceleration/deceleration control unit consists of a predetermined number of delay units and has first to third acceleration/deceleration filters that are connected in series. The first to third filters sent to the second and third filters and to the corresponding servo circuits the outputs (Pb, Pc, Pd) that are obtained by dividing the sum of an instruction speed (Pa), the ones corresponded to the first filter output (Pb) and to the second filter output (Pc), and values stored in the delay units of the filters by a value which consists of a number of units to which "1" is added. Discontinuity of the first and second derivatives (acceleration, and rate of change of acceleration) of the first filter output (Pb) generated during the acceleration/deceleration processing (r) is removed by the acceleration/deceleration processing through the second and third filters.
    • 该设备具有与为机器提供的伺服电动机相同数量的加速/减速控制单元。 每个加减速控制单元由预定数量的延迟单元组成,并且具有串联连接的第一至第三加减速滤波器。 发送到第二和第三滤波器的滤波器和对应的伺服电路输出e(Pb,Pc,Pd),其通过将指令速度(Pa)与对应于第一滤波器输出(Pb)的指令速度 和第二滤波器输出(Pc),以及存储在滤波器的延迟单元中的值由通过添加了“1”的单元数构成的值。 在加速/减速处理(t)期间产生的第一滤波器输出(Pb)的第一和第二导数(加速度和加速度变化率)的不连续性通过第二和第三滤波器的加速/减速处理被去除。
    • 9. 发明公开
    • Method and system for controlling a machine tool such as turning machine
    • 用于控制机床例如车床方法和装置。
    • EP0328972A2
    • 1989-08-23
    • EP89101941.6
    • 1989-02-03
    • THE CROSS COMPANY
    • Migda, Kenneth F.
    • G05B19/18
    • G05B19/184G05B2219/34042G05B2219/41337
    • A method and system (10) for controlling radial movement of a machine tool, such as a turning machine, relative to a workpiece (11), is characterized by a digital filter (70, 72, 74) which produces a filtered final control signal which is a function of both radial position and velocity of a cutting tool (24) of the turning machine. The method and system (10) utilizes a tool position feedback signal which is compared with an initial control signal to produce a signal which is then digitally filtered to, in turn, provide the resulting final control signal. The surface geometry of the workpiece (11), such as a piston, is determined by a data matrix of angular, axial and radial position coordinants of the tool. An angular position signal representative of the angular position of the workpiece (11) and an axial position signal representative of the axial position of the cutting tool (24) relative to the workpiece (11) are both generated. The angular and axial position signals are correlated with the data matrix to generate the initial control signal. The control loop of the system (10) is closed within the software portion of the system (10) for increased reliability. Also, there is no need for velocity loop feedback with a velocity transducer. Feed forward compensation is performed in the software portion of the system (10). The digital filter (70, 72, 74) is preferably implemented with a digital algorithm on a digital signal processing microprocessor of an axis control board (38). The digital filter (70, 72, 74) is either an infinite-impulse-response type (i.e. recursive) or a finite-impulse-response type (non-recursive) from which control, such as PID control, can be derived.
    • 一种用于控制机床的径向移动的方法和系统(10),检查作为车床,相对于工件(11)是由一个数字滤波器为特征的(70,72,74),它产生一个滤波的最终控制信号 所有这些是在回转机械的切削工具(24)的两个径向位置和速度的函数。 该方法和系统(10)利用一个工具位置反馈信号中的所有其与初始的控制信号相比,以产生一个信号的所有其然后被数字滤波以,反过来,提供所得到的最终控制信号。 工件(11)的表面几何形状:例如活塞,被确定性由工具的角度,轴向和径向位置的coordinants数据矩阵开采。 的角度代表所述工件(11)和表示所述切削工具的轴向位置的轴向在位置信号的角度位置的位置信号都产生(24)相对于所述工件(11)。 的角度和轴向位置的信号与数据矩阵以产生所述初始控制信号相关。 该系统(10)的控制回路在所述系统(10),用于提高可靠性的软件部分内关闭。 所以,没有必要用一个速度传感器的速度反馈回路。 前馈补偿在系统(10)的软件部分来执行。 数字滤波器(70,72,74)优选地与上轴控制板(38)的一个数字信号处理微处理器的数字算法来实现。 数字滤波器(70,72,74)是要么在无限冲激响应型的(即,递归)或者从哪个控制,:诸如PID控制的有限脉冲响应型(非递归),可以推导出。