公开(公告)号：US5021650A

公开(公告)日：1991-06-04

申请号：US500800

申请日：1990-03-28

申请人： Heinz Rieder ,  Max Schwaiger

发明人： Heinz Rieder ,  Max Schwaiger

IPC分类号： G01D5/244 ,  G05B19/21

CPC分类号： G01D5/2449 ,  G01D5/24485 ,  G05B19/21 ,  G05B2219/37296 ,  G05B2219/41092

摘要： In the operation of an incremental measuring system, a measuring scale is scanned for generating periodic sinusoidal, analog measured-value signals. Digital countable signals are derived from the measured-value signals in conjunction with an electronic subdivision of the scale and are delivered to an electronic evaluating unit. Each countable signal is associated with a certain phase angle of the measured-value signals. For an electronic correction of position errors, predetermined signal levels are detected at a series of first points, which have an electrical spacing corresponding to a sub-incremental step constituting a fractional part of a scale increment, and these signal levels are alternatively detected at a series of second points, which have the same electrical spacing as the first points and are offset by a fractional part of this spacing, and in accordance with a correction program the measurement is selectively evaluated in response to the signal levels at these points so that corrections can be effected in steps corresponding to only a fractional part of such sub-incremental step.

摘要翻译： 在增量测量系统的操作中，扫描测量刻度以产生周期性正弦模拟测量值信号。 数字可计数信号是从测量值信号中得出的，并结合电子秤划分并传送到电子评估单元。 每个可计数信号与测量值信号的一定相位角相关联。 对于位置误差的电子校正，在一系列第一点处检测预定的信号电平，这些第一点具有对应于构成刻度增量的小数部分的子增量步长的电气间隔，并且这些信号电平在 一系列第二点，其具有与第一点相同的电气间隔并且被该间隔的一部分偏移，并且根据校正程序，响应于这些点处的信号电平选择性地评估测量，使得校正 可以仅对应于这种子增量步骤的一部分的步骤来实现。

公开(公告)号：US4398241A

公开(公告)日：1983-08-09

申请号：US176214

申请日：1980-08-07

申请人： Elwood B. Baker ,  James A. Turner

发明人： Elwood B. Baker ,  James A. Turner

IPC分类号： G05B19/23 ,  G05B17/02 ,  G06F15/46

CPC分类号： G05B19/232 ,  G05B2219/34241 ,  G05B2219/37183 ,  G05B2219/41092 ,  G05B2219/43015 ,  G05B2219/43097

摘要： This disclosure describes digital control circuit to actuate an analog servo motor in response to digital information from a computer. The control circuit is responsive to the timing signal (13) from the computer, and includes a circuit (12) to receive information from the computer indicative of a new servo position. A feedback circuit (15) receives information from the servo indicative of the actual present servo position. Information processed individually by each of these circuits then is connected into a computational network (14) in order to generate a properly timed digital output signal which, when converted in a suitable digital-to-analog converter (17), is able to drive a servo motor accurately.

摘要翻译： 本公开描述了响应于来自计算机的数字信息来致动模拟伺服电动机的数字控制电路。 控制电路响应于来自计算机的定时信号（13），并且包括用于从计算机接收指示新的伺服位置的信息的电路（12）。 反馈电路（15）从伺服器接收指示实际当前伺服位置的信息。 然后，由这些电路中的每一个单独处理的信息被连接到计算网络（14）中，以便产生适当定时的数字输出信号，当在合适的数模转换器（17）中转换时，能够驱动 伺服电机精确。

公开(公告)号：US4350941A

公开(公告)日：1982-09-21

申请号：US188449

申请日：1980-09-19

申请人： George W. McClure ,  Veljko Milenkovic

发明人： George W. McClure ,  Veljko Milenkovic

IPC分类号： G05B19/23 ,  G05B19/28

CPC分类号： G05B19/232 ,  G05B2219/34215 ,  G05B2219/37154 ,  G05B2219/37183 ,  G05B2219/41047 ,  G05B2219/41092 ,  G05B2219/42182 ,  G05B2219/43006 ,  G05B2219/43097 ,  G05B2219/43152 ,  G05B2219/43182

摘要： A motion control system includes a single stage gear reducer and power screw, a brushless variable-speed electric motor with position and velocity sensing instrumentation, a solid state power amplifier, and a programmable controller. During operation an absolute positional reference is established when the slide actuates a non-contacting limit switch to signal that the slide is within less than one motor revolution of the correct starting point. A memory accessible by a microprocessor has paired values of velocity and position stored in a table representing ideal such values for deceleration portions of the motion cycle. Alternatively, the microprocessor computes each new value of position and velocity in real time as required to update the velocity commands sent to a comparator. The comparator compares the predetermined slide position to the actual slide position and signals the microprocessor that a change in output to the motor power supply is required. A digital to analog converter converts the motor velocity signal that issues from the microprocessor to a variable d.c. voltage whose magnitude varies over a range that determines the sense of direction and speed of the drive motor.

摘要翻译： 运动控制系统包括单级齿轮减速器和动力螺杆，具有位置和速度感测仪器的无刷变速电动机，固态功率放大器和可编程控制器。 在操作期间，当滑块启动非接触限位开关以指示滑块位于正确起点的小于一个电机转速内时，建立绝对位置参考。 由微处理器访问的存储器具有存储在表示运动周期的减速部分的理想值的表中的速度和位置的成对值。 或者，微处理器根据需要实时地计算每个新的位置和速度值，以更新发送到比较器的速度命令。 比较器将预定的滑动位置与实际滑动位置进行比较，并向微处理器通知需要电动机电源的输出变化。 数模转换器将从微处理器发出的电机速度信号转换成可变直流电。 电压的大小在确定驱动电机的方向和速度感的范围内变化。

公开(公告)号：US4085890A

公开(公告)日：1978-04-25

申请号：US705567

申请日：1976-07-15

申请人： Toshihiro Kimura ,  Yoshimaro Hanaki ,  Humio Nomura

发明人： Toshihiro Kimura ,  Yoshimaro Hanaki ,  Humio Nomura

IPC分类号： B23Q17/00 ,  B23Q17/22 ,  C03B9/41 ,  G01B7/00 ,  G01B21/00 ,  G01D5/244 ,  G01D5/245 ,  G05B19/19 ,  G05B19/23 ,  G05D3/12 ,  G06F7/02 ,  G05B19/24 ,  G06F7/38 ,  G06F15/46

CPC分类号： G05B19/231 ,  G05B2219/37154 ,  G05B2219/37183 ,  G05B2219/41092 ,  G05B2219/41363 ,  G05B2219/42318 ,  G05B2219/42329 ,  G05B2219/50025 ,  G05B2219/50191

摘要： A reference point detection pulse generator determines normally-equidistant reference points which provide references over the whole control axis range of a numerically controlled machine. On the basis of the outputs of the reference point detection pulse generator and a moving amount detection pulse generator, the position of a moving part is numerically calculated by a moving part position calculator means. The position of the moving part based on the output of the moving amount detection pulse generator is compared with that based on the output of the moving part position calculator means, and if an error is present therebetween an alarm is issued.

摘要翻译： 参考点检测脉冲发生器确定在数控机器的整个控制轴范围上提供参考的等距参考点。 基于参考点检测脉冲发生器和移动量检测脉冲发生器的输出，通过移动部位位置计算装置对移动部件的位置进行数值计算。 将基于移动量检测脉冲发生器的输出的移动部件的位置与基于移动部位位置计算器装置的输出的位置进行比较，并且如果在其间存在错误，则发出报警。

公开(公告)号：US20180150047A1

公开(公告)日：2018-05-31

申请号：US15823511

申请日：2017-11-27

申请人： Glowforge Inc.

发明人： Daniel Shapiro

IPC分类号： G05B19/19

CPC分类号： G05B19/19 ,  G05B19/402 ,  G05B2219/40607 ,  G05B2219/41092

摘要： A method for calibrating a computer-numerically-controlled machine can include capturing one or more images of at least a portion of the computer-numerically-controlled machine. The one or more images can be captured with at least one camera located inside an enclosure containing a material bed. A mapping relationship can be created which maps a pixel in the one or more images to a location within the computer-numerically controlled machine. The creation of the mapping relationship can include compensating for a difference in the one or more images relative to one or more physical parameters of the computer-numerically-controlled machine and/or a material positioned on the material bed. Related systems and/or articles of manufacture, including computer program products, are also provided.

公开(公告)号：US5773947A

公开(公告)日：1998-06-30

申请号：US437876

申请日：1995-05-09

申请人： Katsuhiko Torii ,  Kengo Yamamura ,  Masafumi Yamaura ,  Makihiro Ishikawa ,  Yoshihisa Sato

发明人： Katsuhiko Torii ,  Kengo Yamamura ,  Masafumi Yamaura ,  Makihiro Ishikawa ,  Yoshihisa Sato

IPC分类号： G01B7/30 ,  B60J1/17 ,  B60J7/057 ,  E05F15/00 ,  E05F15/16 ,  G01B7/00 ,  G01D5/04 ,  G01D5/25 ,  G05B19/23 ,  H01H3/16 ,  H02K7/116 ,  H02K11/00 ,  B60J7/04

CPC分类号： H01H3/166 ,  E05F15/40 ,  G01D5/04 ,  G01D5/25 ,  G05B19/23 ,  H02K11/215 ,  E05F15/697 ,  E05Y2201/49 ,  E05Y2201/638 ,  E05Y2201/72 ,  E05Y2400/322 ,  E05Y2600/458 ,  E05Y2800/22 ,  E05Y2900/55 ,  G05B2219/41092 ,  G05B2219/45242 ,  H01H2019/006 ,  H02K7/1166

摘要： In a position detector, a ring gear rotates with a motor output shaft and a specified rotation position is detected by a move contact and fixed contacts. When the output shaft rotates thereafter, holding a carrier by a wave washer is released and the transmission of rotation of the output shaft to the ring gear is dropped. Therefore, by rotating the output shaft sufficiently at the time of assembling, an initial state, in which a protrusion section abuts a protrusion and the move contact contacts the fixed contact, is set automatically.

摘要翻译： 在位置检测器中，齿圈与电机输出轴一起旋转，并通过移动触点和固定触点检测到指定的旋转位置。 当输出轴随后旋转时，释放用波形垫圈保持载体，输出轴向环形齿轮的转动传递下降。 因此，通过在组装时充分旋转输出轴，自动设定突起部与突起抵接并使移动触点接触固定触点的初始状态。

公开(公告)号：US4650264A

公开(公告)日：1987-03-17

申请号：US680223

申请日：1984-12-10

申请人： Dean L. Dahnert

发明人： Dean L. Dahnert

IPC分类号： B65G1/127 ,  G05B19/23 ,  A47B49/00

CPC分类号： B65G1/127 ,  G05B19/23 ,  G05B2219/36242 ,  G05B2219/41092 ,  G05B2219/41099 ,  G05B2219/41279 ,  G05B2219/45045 ,  G05B2219/50084

摘要： A control system for vertical storage equipment requires only two sensing devices, in combination with a microprocessor controller, for positioning a selected article carrier at a specified work station. One sensor senses a reference mark having a direct speed and position relation with the carriers. The second sensor senses at least one reference mark mounted to a high speed member in the drive mechanism used to move the carriers. By sensing the high speed member, the resolution of the control system is greatly increased, thereby providing the control system with increased accuracy and versatility. A flywheel having a relative inertia greater than the total of the remaining moving parts is preferably employed to negate the influence of carrier loading conditions on control system smoothness and accuracy.

摘要翻译： 用于垂直存储设备的控制系统仅需要两个感测装置，与微处理器控制器组合，用于在指定的工作站定位所选择的物品载体。 一个传感器检测到与载体具有直接速度和位置关系的参考标记。 第二传感器感测安装到用于移动载体的驱动机构中的高速部件的至少一个参考标记。 通过感测高速构件，大大提高了控制系统的分辨率，从而为控制系统提供了更高的精度和多功能性。 优选地使用具有大于剩余运动部件的总和的相对惯量的飞轮来抵消载体载荷条件对控制系统平滑度和精度的影响。

公开(公告)号：US4470108A

公开(公告)日：1984-09-04

申请号：US326251

申请日：1981-12-01

申请人： Yoshito Kato ,  Toshio Hashimoto ,  Masatoshi Kimura

发明人： Yoshito Kato ,  Toshio Hashimoto ,  Masatoshi Kimura

IPC分类号： G05B19/23 ,  G05B19/19

CPC分类号： G05B19/23 ,  G05B2219/34052 ,  G05B2219/34215 ,  G05B2219/36159 ,  G05B2219/37183 ,  G05B2219/41092 ,  G05B2219/41358 ,  G05B2219/50084

摘要： Pulses indicating movement distance are frequency divided to a desired resolution and then counted in a microprocessor in accordance with the direction of movement. The position count value addresses a data memory storing switch output data corresponding to desired detection positions.

摘要翻译： 指示移动距离的脉冲被频率划分为期望的分辨率，然后根据移动方向在微处理器中计数。 位置计数值寻址存储对应于期望检测位置的开关输出数据的数据存储器。

公开(公告)号：US4462159A

公开(公告)日：1984-07-31

申请号：US556586

申请日：1983-11-30

申请人： Guenther Nelle

发明人： Guenther Nelle

IPC分类号： G01B7/00 ,  G01B7/02 ,  G01D5/244 ,  G01D5/245 ,  H01J3/14

CPC分类号： G01D5/2457 ,  G01B7/02 ,  G05B2219/41092

摘要： A measuring system is described which includes a scale which defines both a measuring graduation and an array of reference marks positioned at predetermined positions with respect to the measuring graduation. The measuring system also includes a scanning unit which generates reference signals in response to detection of the reference mark. In the disclosed system a track is provided on the measuring scale which records selection indicators electrically. These selection indicators are scanned via an element of the scanning unit in order to allow selected ones of the reference marks to go into operation. Preferably, the scanning unit includes a record head for magnetically recording the selection indicators on the track, an erase head for magnetically erasing the selection indicators on the track, and a read head for magnetically detecting the selection indicators.

摘要翻译： 描述了一种测量系统，其包括定义测量刻度和定位在相对于测量刻度的预定位置的参考标记阵列的刻度。 测量系统还包括扫描单元，其响应于参考标记的检测而产生参考信号。 在所公开的系统中，在测量标尺上提供轨道，该轨迹记录选择指示器电气。 通过扫描单元的元件对这些选择指示符进行扫描，以便允许选定的参考标记被执行。 优选地，扫描单元包括用于磁道地记录轨道上的选择指示符的记录头，用于磁性擦除轨道上的选择指示符的擦除头和用于磁性检测选择指示符的读取头。

公开(公告)号：US4148203A

公开(公告)日：1979-04-10

申请号：US840315

申请日：1977-10-07

申请人： Assadollah Farazandeh ,  Buford R. Everett

发明人： Assadollah Farazandeh ,  Buford R. Everett

IPC分类号： B21D5/02 ,  B30B15/24 ,  G05B19/23 ,  G05B19/4093 ,  G05B19/414

CPC分类号： G05B19/232 ,  B21D5/004 ,  B21D5/02 ,  B30B15/24 ,  G05B19/4093 ,  G05B19/4142 ,  G05B2219/34215 ,  G05B2219/35556 ,  G05B2219/36162 ,  G05B2219/41092 ,  G05B2219/41309 ,  G05B2219/42318 ,  Y02P90/265

摘要： A computer-controlled hydraulic press brake includes an actuator and control system which automatically provides variable pre-programmable ram opening and closing strokes. A microprocessor within the control system responds to stroke parameters entered by the operator and an encoder-generated signal indicative of ram position to generate a velocity command signal defining a velocity profile for positioning the ram to the stroke limits. Closed-loop servo systems associated with each ram cylinder respond to the velocity command signal to cause movement of the ram in accordance with the velocity profile. A ram leveling circuit responsive to individual position sensors associated with respective sides of the ram compensates for ram tilt by simultaneously applying complimentary correction signals to the respective servo systems. A second velocity profile may be generated in response to stored parameters to position a back gauge concurrently with ram movement by means of a second motor drive servo system.

摘要翻译： 计算机控制的液压式制动器包括致动器和控制系统，其自动地提供可变的可预先编程的开启和关闭冲程。 控制系统内的微处理器响应由操作员输入的冲程参数和指示压头位置的编码器产生的信号，以产生速度指令信号，该速度指令信号限定将冲头定位到行程极限的速度分布。 与每个压头气缸相关联的闭环伺服系统响应于速度指令信号，以根据速度曲线引起压头的移动。 响应于与冲头的相应侧面相关联的各个位置传感器的冲击平衡电路通过同时向相应的伺服系统施加补偿校正信号来补偿冲头倾斜。 可以响应于存储的参数产生第二速度分布，以通过第二电动机驱动伺服系统与压头运动同时定位后测量器。