专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

41. 发明申请

US20070188123A1 Controller for servomotor 有权
标题翻译：伺服电机控制器
公开(公告)号：US20070188123A1
公开(公告)日：2007-08-16
申请号：US11703797
申请日：2007-02-08
申请人： Yasusuke Iwashita , Tadashi Okita , Hiroyuki Kawamura , Kenichi Takayama
发明人： Yasusuke Iwashita , Tadashi Okita , Hiroyuki Kawamura , Kenichi Takayama
IPC分类号： G05B11/32
CPC分类号： G05B19/404
摘要： A controller for a servomotor capable of improving accuracy of positioning and quality of a machined surface by switching modes of correction of a position command or the like, and reducing a shock at the time of switching. A correction amount generating section obtains a correction amount based on a value of a correction factor such as machine temperature. When the external signal is in ON state, a position command or the like is corrected by the correction amount obtained by the correction amount generating section and sent via switches. A correction amount holding section holds the correction amount obtained by the correction amount generating section. When the external signal turns to OFF state, the connection of the switches is changed so that correction is performed by the correction amount held in the correction amount holding section. When the connection of the switches is changed, the correction amount does not change rapidly, so that the machine does not suffer a shock. In positioning, the external signal is turns to ON state, so that the positioning is carried out accurately by performing correction by the correction amount sent from the correction amount generating section. When a high-quality machined surface is required, the external signal is turned to OFF state so that the correction amount does not change to achieve improvement in the quality of a machined surface.
摘要翻译：一种伺服电动机的控制器，其能够通过切换位置指令等的切换模式来提高加工面的定位精度和质量，并减少切换时的冲击。校正量生成部根据机器温度等校正因子的值来求出校正量。当外部信号处于接通状态时，通过由校正量产生部分获得的校正量来校正位置指令等并通过开关发送。校正量保持部保持由校正量生成部获得的校正量。当外部信号变为OFF状态时，改变开关的连接，从而通过校正量保持部中保持的校正量进行校正。当开关的连接发生变化时，校正量不会迅速变化，因此机器不会受到冲击。在定位中，外部信号变为接通状态，从而通过从校正量产生部分发送的校正量执行校正来精确地执行定位。当需要高质量的加工表面时，外部信号变为断开状态，使得校正量不变，以实现加工表面的质量的提高。

42. 发明申请

US20070012083A1 Device for judging collision of a die cushion mechanism and system for judging collision 审中-公开
标题翻译：用于判断模具缓冲机构和用于判断碰撞的系统的碰撞的装置
公开(公告)号：US20070012083A1
公开(公告)日：2007-01-18
申请号：US11477804
申请日：2006-06-30
申请人： Yasusuke Iwashita , Tadashi Okita , Hiroyuki Kawamura , Satoshi Ikai
发明人： Yasusuke Iwashita , Tadashi Okita , Hiroyuki Kawamura , Satoshi Ikai
IPC分类号： B21D22/21
CPC分类号： B21D24/10 , G05B19/19 , G05B2219/37411 , G05B2219/37622 , G05B2219/37624 , G05B2219/42123 , G05B2219/45131
摘要： A device (110) for judging the collision of a slide (24) with a die cushion in a die cushion mechanism (20) which produces a force against the slide in a press machine using a servo motor (18) as a drive source, comprising force detection means (21) for detecting a force produced between the die cushion and the slide; and comparator means (95) for comparing a force detection value (Fd) detected by the force detection means with a predetermined threshold value (L1); wherein, when the force detection value becomes greater than the threshold value, it is so judged that the slide has come into collision with the die cushion. Thus, the collision is judged within a short period of time and reliably. The collision may be judged by comparing differentiated values (Fd′, Fd″) of the force detection value, slide position detection value (Y1d) or slide position instruction value (Y1c) or other related threshold values. There can be further used a system for judging a collision which executes a plurality of methods for judging the collision.
摘要翻译：一种用于判断滑块（24）与模具缓冲机构（20）中的冲模垫的碰撞的装置（110），其在使用伺服电动机（18）作为驱动源的冲压机中产生对滑块的力，包括用于检测模座和滑块之间产生的力的力检测装置（21）以及比较装置，用于将由力检测装置检测的力检测值（Fd）与预定阈值（L 1）进行比较; 其中，当所述力检测值变得大于所述阈值时，判断为所述滑块与所述模具座碰撞。因此，在短时间内可靠地判断碰撞。可以通过比较力检测值，滑动位置检测值（Y 1 d）或滑动位置指示值（Y 1 c）或其他相关阈值的微分值（Fd'，Fd“）来判断碰撞。可以进一步使用用于判断碰撞的系统，该系统执行用于判断碰撞的多种方法。

43. 发明申请

US20060288755A1 Control device for servo die cushion 有权
标题翻译：伺服模具坐垫控制装置
公开(公告)号：US20060288755A1
公开(公告)日：2006-12-28
申请号：US11472296
申请日：2006-06-22
申请人： Yasusuke Iwashita , Tadashi Okita , Hiroyuki Kawamura , Satoshi Ikai
发明人： Yasusuke Iwashita , Tadashi Okita , Hiroyuki Kawamura , Satoshi Ikai
IPC分类号： B21D22/21
CPC分类号： G05B19/404 , G05B2219/37323 , G05B2219/49135 , G05B2219/49176
摘要： A control device of a die cushion mechanism, by which a force between a slide and a die cushion may follow a commanded value even in the rapid acceleration or deceleration of the slide and, moreover, a problem such as vibration of the mechanism may be prevented in the gradual acceleration or deceleration of the slide. The control device includes a slide position detecting part, such as a position sensor, for detecting the position of the slide and a correcting part for correcting a current commanded value using an acceleration of the slide, obtained by second-order differentiation of the position of the slide detected by the position sensor.
摘要翻译：模具缓冲机构的控制装置，即使在滑块的快速加速或减速中，滑块和模具座之间的力也可以遵循指令值，此外，可以防止机构的振动等问题在幻灯片的逐渐加速或减速。控制装置包括用于检测滑块的位置的滑动位置检测部分，例如位置传感器，以及用于通过滑块的加速度来校正当前指令值的校正部件，该校正部件通过二阶微分由位置传感器检测到的滑块。

44. 发明申请

US20060184257A1 Controller 审中-公开
标题翻译：控制器
公开(公告)号：US20060184257A1
公开(公告)日：2006-08-17
申请号：US11294461
申请日：2005-12-06
申请人： Yasusuke Iwashita , Tadashi Okita , Hiroyuki Kawamura , Satoshi Ikai
发明人： Yasusuke Iwashita , Tadashi Okita , Hiroyuki Kawamura , Satoshi Ikai
IPC分类号： G05B13/02
CPC分类号： G05B19/404 , G05B2219/37434 , G05B2219/41117 , G05B2219/42077
摘要： In a controller, V axis and W axis for driving a driven body are tilting, not orthogonal to each other. An acceleration detector capable of detecting accelerations in a plurality of directions orthogonal to the driven body is arranged so that W-axis direction may meet Y-axis direction of an acceleration detected by the acceleration detector. An acceleration in the V-axis direction is determined by making calculations from accelerations in X-axis and Y-axis directions detected by acceleration detectors. Based on the determined accelerations in the V-axis and W-axis directions, a position command, a speed command or a current command to servo motors driving the V axis and W axis is corrected. Such correction suppresses the driven body from generation of vibrations.
摘要翻译：在控制器中，用于驱动从动体的V轴和W轴倾斜，彼此不正交。布置能够检测与被驱动体正交的多个方向上的加速度的加速度检测器，使得W轴方向可以满足由加速度检测器检测到的加速度的Y轴方向。通过从由加速度检测器检测的X轴和Y轴方向的加速度进行计算来确定V轴方向的加速度。基于所确定的V轴和W轴方向的加速度，校正对驱动V轴和W轴的伺服电动机的位置指令，速度指令或电流指令。这种校正抑制被驱动体产生振动。

45. 发明授权

US07049775B2 Servo motor control unit for press-forming machine 有权
标题翻译：伺服电机控制单元，用于压力成型机
公开(公告)号：US07049775B2
公开(公告)日：2006-05-23
申请号：US11167203
申请日：2005-06-28
申请人： Yasusuke Iwashita , Tadashi Okita , Hiroyuki Kawamura
发明人： Yasusuke Iwashita , Tadashi Okita , Hiroyuki Kawamura
IPC分类号： G05B6/02 , B21J5/00
CPC分类号： G05B19/416 , B30B15/0094 , B30B15/148 , G05B2219/41202 , G05B2219/42087 , G05B2219/42092
摘要： A servo motor for driving a die is provided with position and speed detectors. Further, a pressure sensor for detecting the pressure applied to a workpiece is provided. In the servo motor control unit, the smaller one of the speed command obtained by feedback control of the position and the speed command obtained by the pressure feedback control is selected as an output of a comparator. Based on the speed command output from the comparator, feedback control of the speed is performed and the servo motor is driven. In the state where the die does not press against the workpiece, a pressure error is large, the speed command by pressure control becomes large, and the speed command by position control becomes small. Therefore, position control is performed. When the workpiece is pressed, the position error increases, and the pressure error decreases, a speed command by pressure control is employed and pressure control is performed.
摘要翻译：用于驱动模具的伺服电机设置有位置和速度检测器。此外，提供了用于检测施加到工件的压力的压力传感器。在伺服电机控制单元中，选择通过反馈控制获得的速度命令中的较小的一个，并且通过压力反馈控制获得的速度指令作为比较器的输出。根据比较器的速度指令输出，进行速度反馈控制，驱动伺服电机。在模具不压靠工件的状态下，压力误差大，压力控制的速度指令变大，位置控制的速度指令变小。因此，执行位置控制。当工件被按压时，位置误差增加，压力误差降低，采用压力控制的速度指令，进行压力控制。

46. 发明授权

US07170256B2 Motor control device 有权
标题翻译：电机控制装置
公开(公告)号：US07170256B2
公开(公告)日：2007-01-30
申请号：US11167254
申请日：2005-06-28
申请人： Yasusuke Iwashita , Tadashi Okita , Hiroshi Kougami
发明人： Yasusuke Iwashita , Tadashi Okita , Hiroshi Kougami
IPC分类号： H02P1/54 , H02K21/00
CPC分类号： H02P29/026 , H02P6/153 , H02P21/0089 , H02P21/22 , H02P25/03
摘要： In the control of a synchronous motor having a permanent magnet, an alternating current power supply voltage that is input to a power amplifier or a direct current link voltage of which input voltage is rectified is measured. A reactive current (a d-axis current) or a current control phase advance is changed, according to this power supply voltage. With this arrangement, reactive current control or current phase control can be carried out directly according to a change in the input power supply voltage. A motor control device includes a voltage measuring unit that measures a voltage supplied to a driving amplifier, and a current control unit that controls a current passed to a synchronous motor based on the measured voltage. The voltage measuring unit measures a voltage supplied to the amplifier. The current control unit controls a current that is passed to the synchronous motor, according to the measured voltage. As a result, the motor control device can directly control the current according to a change in the input power supply voltage to the motor.
摘要翻译：在具有永磁体的同步电动机的控制中，测量输入到功率放大器的交流电源电压或输入电压整流的直流电压电压。根据该电源电压，改变无功电流（d轴电流）或电流控制相位前进。通过这种布置，可以根据输入电源电压的变化直接进行无功电流控制或电流相位控制。电动机控制装置包括：电压测量单元，其测量提供给驱动放大器的电压;以及电流控制单元，其基于所测量的电压来控制传递到同步电动机的电流。电压测量单元测量提供给放大器的电压。电流控制单元根据测得的电压控制传递给同步电动机的电流。结果，马达控制装置可以根据对马达的输入电源电压的变化直接控制电流。

47. 发明授权

US06741057B2 Servo controller for preventing downward displacement in gravitating axis 有权
标题翻译：伺服控制器，用于防止重力轴向下移位
公开(公告)号：US06741057B2
公开(公告)日：2004-05-25
申请号：US10269961
申请日：2002-10-15
申请人： Yasusuke Iwashita , Tadashi Okita , Satoshi Ikai
发明人： Yasusuke Iwashita , Tadashi Okita , Satoshi Ikai
IPC分类号： G05B19404
CPC分类号： G05B19/406 , G05B2219/39193 , G05B2219/41265 , G05B2219/42277 , G05B2219/50113 , G05B2219/50178
摘要： A servo controller capable of preventing downward displacement of a gravitating axis of a machine when an excitation of a servomotor for driving the gravitating axis is discontinued. When a shutdown command is issued, a command for shifting a position of the gravitating axis by an offset amount in a direction opposing the gravitation is issued to a servo system. Also, a command for operating a mechanical brake to apply a braking force on the gravitating axis is issued. After a predetermined time period, the excitation of the servomotor is discontinued. The position of the gravitating axis is shifted upward by the offset amount within a time-lag between an issuance of the mechanical brake operating command and actual application of the braking force by the mechanical brake, and the braking force is applied to the gravitating axis at the shifted position. When the excitation of the servomotor is discontinued, the downward displacement of the position of the gravitating axis due to a backlash of the mechanical brake is compensated by the upward shifting of the gravitating axis, thereby movable elements connected to the gravitating axis is prevented from collision or interference with peripheral objects.
摘要翻译：一种当用于驱动重力轴的伺服电动机的激励被停止时能够防止机器的重力轴的向下位移的伺服控制器。当发出关闭命令时，向伺服系统发出用于将重力轴位置偏移与重力相反方向的偏移量的指令。此外，发出用于操作机械制动器以在重力轴上施加制动力的命令。在预定时间段之后，停止伺服电动机的激励。引力轴的位置在机械制动器操作指令的发出与机械制动器的实际施加制动力之间的时间滞后期间向上移位偏移量，并且制动力施加到引力轴转移位置。当停止伺服电机的激励时，由于机械制动器的间隙引起的重力轴位置的向下位移通过引力轴的向上移位来补偿，从而防止连接到引力轴的可动元件碰撞或干扰周边物体。

48. 发明授权

US5598077A Control apparatus and a control method for a servomotor 失效
标题翻译：伺服电机的控制装置和控制方法
公开(公告)号：US5598077A
公开(公告)日：1997-01-28
申请号：US416898
申请日：1995-04-18
申请人： Shunsuke Matsubara , Yasusuke Iwashita , Tadashi Okita
发明人： Shunsuke Matsubara , Yasusuke Iwashita , Tadashi Okita
IPC分类号： B23Q15/24 , G05B19/18 , G05B19/404 , G05D3/12 , H02P1/16 , H02P23/00 , H02P29/00 , G05B11/01
CPC分类号： G05B19/404 , H02P23/24 , G05B2219/41078
摘要： The present invention relates to motor control at the time of reversal of direction of feed axes of a machine tool using a servomotor. The present invention includes a disturbance torque estimating unit for estimating a disturbance torque and estimating a frictional torque. The value in a speed loop integrator is divided into a frictional torque component and an acceleration torque component. An integrator target value for the time of reversal of motor rotation is obtained in accordance with the acceleration torque component and a value obtained by inverting the sign of the frictional torque component. Backlash acceleration correction is effected using a value obtained by applying a certain offset to a speed command so that the integrator target value is reached, as a backlash acceleration value. In estimating the frictional torque, a ratio of torque constant to inertia is estimated automatically, and the frictional torque is estimated by using this ratio. Since proper backlash acceleration correction can be effected, quadrant projections are minimized.
摘要翻译： PCT No.PCT / JP94 / 01326 Sec。 371日期1995年04月18日 102（e）1995年4月18日PCT PCT 1994年8月10日PCT公布。 WO95 / 05703 PCT出版物日期：1995年2月23日本发明涉及使用伺服电机反转机床的进给轴方向时的电动机控制。本发明包括用于估计干扰转矩并估计摩擦转矩的扰动转矩估计单元。速度环积分器中的值被分为摩擦转矩分量和加速度转矩分量。根据加速扭矩分量和通过反转摩擦转矩分量的符号获得的值来获得电动机旋转时间的积分器目标值。使用通过对速度指令施加某个偏移而获得的值来达到积分器目标值作为间隙加速度值来实现齿隙加速度校正。在估计摩擦转矩时，自动估计转矩常数与惯量的比，并且通过使用该比率来估计摩擦转矩。由于可以实现适当的齿隙加速度校正，所以能够使象限突起最小化。

49. 发明授权

US5374882A Method of controlling servomotor 失效
标题翻译：控制伺服电机的方法
公开(公告)号：US5374882A
公开(公告)日：1994-12-20
申请号：US87749
申请日：1993-07-12
申请人： Shunsuke Matsubara , Tadashi Okita , Yasusuke Iwashita
发明人： Shunsuke Matsubara , Tadashi Okita , Yasusuke Iwashita
IPC分类号： G05D3/12 , G05B19/19 , G05B11/01
CPC分类号： G05B19/19 , G05B2219/41024
摘要： A method of controlling a servomotor, characterized by faster convergence of both positional deviations and velocity deviations, higher responsibility as well as an improved resistivity against a disturbance, and being free from any mechanical resonance. An adjustment gain G is increased when a torque command Tc1 received from a conventional velocity control is small, whereas the adjustment gain G is decreased when the torque command Tc1 is large. A torque command Tc2 obtained by multiplying the Tc1 to the output from the velocity control section by the adjustment gain G is supplied to the servomotor. The gain is to be heightened in the case where the positional deviation and velocity deviation are both small and the torque command Tc1 is also small, to thereby ensure a higher responsibility and a rapid convergence. Moreover, the gain is to be suppressed when the torque command Tc1 is large, thus preventing the occurrence of a mechanical resonance.
摘要翻译： PCT No.PCT / JP92 / 01453 Sec。 371日期：1993年7月12日 102（e）日期1993年7月12日PCT 1991年11月10日PCT PCT。 WO / 9310489 PCT公开日期：1993年5月27日。一种控制伺服电动机的方法，其特征在于位置偏差和速度偏差的更快的收敛性，更高的责任度以及改善的抗扰性的电阻率，并且没有任何机械共振。当从常规速度控制接收到的转矩指令Tc1较小时调节增益G增加，而当转矩指令Tc1较大时调节增益G减小。通过将Tc1与速度控制部的输出相乘而得到的转矩指令Tc2被提供给伺服电动机。在位置偏差和速度偏差都小，转矩指令Tc1也小的情况下，增益要提高，从而确保更高的责任度和快速收敛。此外，当转矩指令Tc1大时，增益被抑制，从而防止发生机械共振。

50. 发明授权

US09557731B2 Control device of gear processing machine 有权
标题翻译：齿轮加工机控制装置
公开(公告)号：US09557731B2
公开(公告)日：2017-01-31
申请号：US13571803
申请日：2012-08-10
申请人： Tadashi Okita , Yasusuke Iwashita
发明人： Tadashi Okita , Yasusuke Iwashita
IPC分类号： G05B19/18 , G05B19/414
CPC分类号： G05B19/4141 , G05B19/186 , G05B2219/50216
摘要： A control device (1) of a gear processing machine has a bus (51) that communicates by directly connecting between a tool axis controller (22) and a workpiece axis controller (12), and, in this control device, the position of a tool axis (40) that is detected by a tool axis position detection sensor (25) is supplied to a workpiece axis controller via a bus, an upper controller (10) supplies a predetermined synchronization ratio and a superimposition command for applying a twisting operation to a workpiece axis controller, and the workpiece axis controller adds a value that is generated by multiplying the position of the tool axis that is supplied via the bus, by the synchronization ratio, and the superimposition command, and generates a motion command for a workpiece axis (30).
摘要翻译：齿轮加工机的控制装置（1）具有通过工具轴控制器（22）和工件轴控制器（12）之间的直接连接进行连通的总线（51），在该控制装置中，通过工具轴位置检测传感器（25）检测到的刀具轴（40）经由总线被供给到工件轴控制器，上控制器（10）将施加扭转操作的预定同步比和叠加指令提供给工件轴控制器，工件轴控制器通过乘以通过总线提供的刀具轴的位置乘以同步比和叠加命令而生成的值，并且生成用于工件轴的运动命令（30）。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式