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公开(公告)号:US5250880A
公开(公告)日:1993-10-05
申请号:US965146
申请日:1992-10-22
CPC分类号: G05B19/358 , G05B2219/37324 , G05B2219/41057 , G05B2219/41337 , Y10T409/304312
摘要: A linear motor control system and method to increase apparent motor stiffness by providing linear motor resistance to perturbations caused by external forces exerted on a slide mass and a base mass. Primary and secondary sensors detect the accelerations of the slide mass and the base mass relative to ground and generate acceleration signals corresponding thereto. A position detector senses the position of the slide mass relative to the base mass and generates a position signal corresponding thereto. A signal processor processes the first and second acceleration signals and the position signal to determine deviations in the position, velocity and acceleration of the slide mass relative to the base mass from selected values caused by the external forces, and to generate a motor control signal to provide linear motor resistance against such deviations.
摘要翻译: 一种线性电动机控制系统和方法,通过为施加在滑动质量块和基体上的外力引起的扰动提供线性电机电阻来增加视在电动机刚度。 主传感器和次传感器检测滑块质量和基体相对于地面的加速度,并产生对应于其的加速度信号。 位置检测器感测滑块质量相对于基体质量的位置并产生对应于其的位置信号。 信号处理器处理第一和第二加速度信号和位置信号,以根据由外力引起的选定值来确定滑块质量相对于基体质量的位置,速度和加速度的偏差,并产生电动机控制信号 提供针对这种偏差的线性电机电阻。
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公开(公告)号:US4802274A
公开(公告)日:1989-02-07
申请号:US46066
申请日:1987-05-04
IPC分类号: B23Q11/04 , B23Q17/09 , G05B19/4065 , B23B49/00
CPC分类号: G05B19/4065 , B23Q11/04 , B23Q17/0961 , G05B2219/37242 , G05B2219/37344 , G05B2219/50276 , Y10T408/172 , Y10T409/303808 , Y10T483/10 , Y10T483/136 , Y10T483/138
摘要: A method is disclosed of determining worn rotary tools during machining operations, comprising: (a) establishing the steady-state dominant tool force level required to (i) carry out a rotary machining operation at a given set of cutting conditions in the abrasive wear regime, (ii) using a known worn rotary tool with a given geometry, and (iii) using a workpiece of given material; (b) supporting another rotary tool of the same given geometry in a holder for being power driven for rotation, the holder having means to impart a signal in response to exceeding a predetermined force level calibrated to be just below the steady-state force level of the worn tool; and (c) while employing the support tool, initiating an automatic tool change in response to any signal imparted by the tool support.
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