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    • 2. 发明授权
    • Method and apparatus for automatic servo gain adjustment for machine
control
    • 用于机器控制的自动伺服增益调整方法和装置
    • US4808899A
    • 1989-02-28
    • US20820
    • 1987-03-02
    • David C. Swope
    • David C. Swope
    • G05B19/35G05B5/01G05B13/02
    • G05B19/351G05B2219/37473G05B2219/41021G05B2219/50228
    • An apparatus and method is disclosed for controlling a motor of a machine to move a member at a predetermined velocity. Specifically, a gain factor included in generating a velocity command signal to the motor is dynamically adjustable in accordance with a relationship between the actual following error of the member and the desired following error at the commanded velocity to thereby compensate for drifts in the drive system electronics. The gain factor for a plurality of members may be similarly dynamically adjusted whereby the path of an application point coupled to all the members is accurately controlled. The invention is also suitable for controlling movement of distal ends of a gantry to eliminate or reduce skewing of the gantry member.
    • 公开了一种用于控制机器的电动机以预定速度移动构件的装置和方法。 具体地说,产生对电动机的速度指令信号的增益因子可以根据构件的实际跟随误差与指令速度下的期望跟随误差之间的关系动态地调节,从而补偿驱动系统电子装置中的漂移 。 可以类似地动态调整多个构件的增益因子,从而精确地控制耦合到所有构件的应用点的路径。 本发明还适用于控制台架的远端的运动以消除或减少机架构件的倾斜。
    • 3. 发明授权
    • Intelligent servo-controlled fiber placement machine tensioner
    • 智能伺服控制光纤放置机张力器
    • US5223072A
    • 1993-06-29
    • US705498
    • 1991-05-24
    • John P. BrockmanRobert A. CarmanDavid C. SwopeNorman D. NealHarold D. Wiebe
    • John P. BrockmanRobert A. CarmanDavid C. SwopeNorman D. NealHarold D. Wiebe
    • B29C70/16B29C53/80B65H59/02
    • B29C53/8041B29C53/8016Y10T156/1348Y10T156/1788
    • To maintain tension on a fiber tow as it travels between a spool of the tow and a fiber placement head in a computer controlled fiber placement machine, closed tension loop servo control tow velocity feed forward is provided to control spool rotation so as to not only provide closed loop tension control but to also cause rotation in anticipation of expected tow movement such as due to tow payout upon commanded movements of the fiber placement head. Gain scheduling based on spool radius is also provided. Additionally, a compliant roller is provided to reduce tension dips and spikes from disturbances on the tow, and an inner velocity loop is included with the closed tension loop to provide more effective control of tow tension. The servo control is reconfigurable into an open or pseudo-closed loop mode with a safety low power supply to slowly reel-up slack tow after tow threading, for example, and to otherwise maintain low tension on the tow to hold it in the machine while allowing servicing thereof. A broken tow test is also provided to detect tow slippage indicative of tow breakage or a possible part defect.
    • 为了保持纤维丝束在丝束的卷轴和计算机控制的光纤贴片机中的光纤放置头之间的张力时,提供闭合张力环伺服控制丝束速度前馈以控制卷轴旋转,以便不仅提供 闭环张力控制,但也可以预期预期丝束运动引起旋转,例如由于纤维放置头的指令运动引起的牵引支付。 还提供了基于线轴半径的增益调度。 另外,提供柔顺的辊以减少来自牵引器上的干扰的张力下降和尖峰,并且闭合张力环包括内部速度回路以提供更有效的牵引张力控制。 例如,伺服控制可重新配置成具有安全低电源的开放或伪闭环模式,以缓慢卷绕松弛丝束,并且例如在丝束上保持低张力以将其保持在机器中, 允许维修。 还提供了破碎的丝束试验以检测指示丝束断裂或可能的部分缺陷的丝束滑动。