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1. 发明申请

US20110234147A1 CONTROLLER FOR SPINDLE WITH ENCODER 审中-公开
标题翻译：带编码器的主轴控制器
公开(公告)号：US20110234147A1
公开(公告)日：2011-09-29
申请号：US13035648
申请日：2011-02-25
申请人： Yasusuke IWASHITA , Tadashi Okita , Takahiro Akiyama , Geng Li
发明人： Yasusuke IWASHITA , Tadashi Okita , Takahiro Akiyama , Geng Li
IPC分类号： H02P23/00
CPC分类号： H02P21/0003 , B23Q15/08 , G05B2219/41319 , Y02P70/167
摘要： A controller controls the rotational speed of an induction motor, thereby controlling a spindle connected to the induction motor. Although an encoder for detecting the position of the spindle is mounted on the spindle, a speed detector is not attached to the induction motor. The speed of the induction motor is estimated from a spindle speed obtained by the encoder, and an excitation frequency command for the induction motor is determined based on the estimated speed.
摘要翻译：控制器控制感应电动机的转速，从而控制连接到感应电动机的主轴。虽然用于检测主轴位置的编码器安装在主轴上，但是速度检测器没有连接到感应电动机。基于由编码器获得的主轴转速来估计感应电动机的速度，并且基于估计的速度来确定感应电动机的激励频率指令。

2. 发明申请

US20110234146A1 CONTROLLER OF SPINDLE PROVIDED WITH ENCODER 有权
标题翻译：编码器提供的主轴控制器
公开(公告)号：US20110234146A1
公开(公告)日：2011-09-29
申请号：US13030252
申请日：2011-02-18
申请人： Yasusuke Iwashita , Tadashi Okita , Takahiro Akiyama , Geng Li
发明人： Yasusuke Iwashita , Tadashi Okita , Takahiro Akiyama , Geng Li
IPC分类号： H02P23/00
CPC分类号： G05D13/64 , B23Q17/10 , G05B19/404 , G05B2219/41136 , G05B2219/41319 , G05B2219/49254
摘要： The controller controls a spindle connected to an induction motor via a belt by controlling the rotational velocity of the induction motor. The spindle has an encoder attached thereto for detecting the position of the spindle, but the induction motor does not have a velocity detector attached thereto. The velocity of the induction motor is estimated from the spindle velocity obtained from output of the encoder, and slip of the belt is detected based on the estimated velocity of the induction motor. When occurrence of slip of the belt is detected, the estimated velocity of the induction motor will not be used for the control of the induction motor.
摘要翻译：控制器通过控制感应电机的旋转速度通过皮带控制连接到感应电机的主轴。主轴具有附接到其上的编码器，用于检测主轴的位置，但是感应电动机没有连接有速度检测器。感应电动机的速度是根据从编码器的输出获得的主轴速度来估计的，并且基于感应电动机的估计速度来检测皮带的滑移。当检测到皮带的滑动发生时，感应电动机的估计速度将不被用于感应电动机的控制。

3. 发明授权

US08242734B2 Controller of spindle provided with encoder 有权
标题翻译：带编码器的主轴控制器
公开(公告)号：US08242734B2
公开(公告)日：2012-08-14
申请号：US13030252
申请日：2011-02-18
申请人： Yasusuke Iwashita , Tadashi Okita , Takahiro Akiyama , Geng Li
发明人： Yasusuke Iwashita , Tadashi Okita , Takahiro Akiyama , Geng Li
IPC分类号： H02P23/00
CPC分类号： G05D13/64 , B23Q17/10 , G05B19/404 , G05B2219/41136 , G05B2219/41319 , G05B2219/49254
摘要： The controller controls a spindle connected to an induction motor via a belt by controlling the rotational velocity of the induction motor. The spindle has an encoder attached thereto for detecting the position of the spindle, but the induction motor does not have a velocity detector attached thereto. The velocity of the induction motor is estimated from the spindle velocity obtained from output of the encoder, and slip of the belt is detected based on the estimated velocity of the induction motor. When occurrence of slip of the belt is detected, the estimated velocity of the induction motor will not be used for the control of the induction motor.
摘要翻译：控制器通过控制感应电机的旋转速度通过皮带控制连接到感应电机的主轴。主轴具有附接到其上的编码器，用于检测主轴的位置，但是感应电动机没有连接有速度检测器。感应电动机的速度是根据从编码器的输出获得的主轴速度来估计的，并且基于感应电动机的估计速度来检测皮带的滑移。当检测到皮带的滑动发生时，感应电动机的估计速度将不被用于感应电动机的控制。

4. 发明授权

US07956568B2 Servo motor controller 有权
标题翻译：伺服电机控制器
公开(公告)号：US07956568B2
公开(公告)日：2011-06-07
申请号：US12329062
申请日：2008-12-05
申请人： Yasusuke Iwashita , Tadashi Okita , Hiroyuki Kawamura , Yuuya Ueno
发明人： Yasusuke Iwashita , Tadashi Okita , Hiroyuki Kawamura , Yuuya Ueno
IPC分类号： G05D23/275
CPC分类号： H02P7/2855 , H02P23/16 , H02P29/00
摘要： A servo motor controller having: a frequency identification section that performs analysis based on a frequency response method and identifies the frequency of a disturbance exhibiting a specified phase lag; an input/output gain identification section that identifies the input/output gain at the frequency identified by the frequency identification section; and a magnification factor resetting section that resets an adjustment magnification factor by performing a specified operation on a ratio between the identified input/output gain and a specified target value of the input/output gain.
摘要翻译：一种伺服电动机控制器，具有：频率识别部，其基于频率响应方式进行分析，并识别表现出规定的相位滞后的干扰的频率; 输入/输出增益识别部分，其识别由频率识别部分识别的频率处的输入/输出增益; 以及放大倍率复位部，其通过对所识别的输入/输出增益与输入/输出增益的指定目标值之间的比率执行指定的操作来重置调整放大系数。

5. 发明授权

US07757526B2 Method for changing force control gain and die cushion control apparatus 有权
标题翻译：改变力控制增益和模具缓冲控制装置的方法
公开(公告)号：US07757526B2
公开(公告)日：2010-07-20
申请号：US11857620
申请日：2007-09-19
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： B21C51/00
CPC分类号： B21D24/02 , G05B19/237 , G05B2219/41251 , G05B2219/45143
摘要： A method for changing a force control gain expressed as a ratio of force error to velocity command value in a control circuit performing a force control of a servo motor driving a die cushion disposed opposite to a slide in a press machine. The method includes: obtaining a difference between a displacement of the slide and a displacement of the die cushion in a state in which the slide and the die cushion collide with and are exerting force on each other; detecting the force when the difference of the displacements is obtained; calculating a spring constant of a structural portion based on a proportionality between the difference of the displacements and the force, when regarding the structural portion including the slide and the die cushion as an elastic structure; and changing the force control gain based on the spring constant using a fixed proportionality that exists between the force control gain and a reciprocal of the spring constant.
摘要翻译：一种用于在执行对在压机中与滑块相对设置的模座的驱动伺服电动机的力控制的控制电路中，改变表示为力误差与速度指令值的比的力控制增益的方法。该方法包括：在滑块和模座碰撞并且彼此施加力的状态下，获得滑块的位移和模具垫的位移之间的差异; 当获得位移的差异时检测力; 当关于包括滑动件和模具衬垫的结构部分作为弹性结构时，基于位移的差异和力之间的比例来计算结构部分的弹簧常数; 并且使用存在于力控制增益和弹簧常数的倒数之间的固定比例度，基于弹簧常数来改变力控制增益。

6. 发明申请

US20090174349A1 MOTOR DRIVE APPARATUS EQUIPPED WITH DYNAMIC BRAKING CIRCUIT FAULT DETECTION CAPABILITY 有权
标题翻译：装有动态制动电路的电机驱动装置故障检测能力
公开(公告)号：US20090174349A1
公开(公告)日：2009-07-09
申请号：US12324972
申请日：2008-11-28
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： H02P6/24 , H02P3/12
CPC分类号： H02P3/18 , G01R31/024
摘要： A motor drive apparatus 1 having a dynamic braking circuit 5 for producing a deceleration torque utilizing a braking force caused by a synchronous motor 4 acting as a generator when the synchronous motor 4 is deenergized, is equipped with a dynamic braking circuit fault detection capability, and comprises: a DC power supply 2 which is obtained by rectifying input AC power; voltage application means 2, 3, 10, 11 for applying a voltage to the windings of the synchronous motor 4 and to the dynamic braking circuit 5 for a predetermined length of time by switching power transistors A to F connected to the DC power supply 2; current detection means 6 for detecting the value of a current flowing from the power transistors A to F; and fault checking means 11 for checking the dynamic braking circuit 5 for the presence or absence of a fault, based on the current value detected by the current detection means 6 and on a predefined threshold value. With this configuration, detection of faults in the dynamic braking circuit is accomplished without requiring the addition of a contact signal or a control circuit.
摘要翻译：具有动力制动电路5的电动机驱动装置1配备动态制动电路故障检测能力，该动力制动电路5利用在同步电动机4断电时作为发电机的同步电动机4产生的制动力产生减速转矩，包括：通过整流输入AC电力获得的直流电源2; 通过连接到直流电源2的功率晶体管A至F将电压施加到同步电动机4的绕组和动态制动电路5达预定时间长度的电压施加装置2,3,10,11; 用于检测从功率晶体管A到F的电流值的电流检测装置6; 以及用于根据由电流检测装置6检测到的电流值和预定义的阈值来检查动态制动电路5是否存在故障的故障检查装置11。利用这种配置，可以在不需要添加接触信号或控制电路的情况下实现动态制动电路中的故障的检测。

7. 发明授权

US07461530B2 Die cushion mechanism, and apparatus and method for controlling the same 有权
标题翻译：模具缓冲机构及其控制装置及方法
公开(公告)号：US07461530B2
公开(公告)日：2008-12-09
申请号：US11265078
申请日：2005-11-03
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： B21C51/00
CPC分类号： G05B19/19 , B21D24/02 , G05B2219/41139 , G05B2219/42087 , G05B2219/45131
摘要： A control apparatus for controlling a die cushion mechanism including a servo-motor as a drive source and producing a force adapted to be applied to a slide in a press machine. The control apparatus includes a force commanding section for commanding a force to be produced by the die cushion mechanism; a force detecting section for detecting the force produced by the die cushion mechanism; a motor-speed detecting section for detecting an operating speed of the servo-motor; a slide-speed detecting section for detecting a moving speed of the slide; and a force controlling section for executing a force control on the servo-motor, based on a force command value commanded by the force commanding section, a force detected value detected by the force detecting section, a motor-speed detected value detected by the motor-speed detecting section and a slide-speed detected value detected by the slide-speed detecting section.
摘要翻译：一种用于控制模具缓冲机构的控制装置，其包括作为驱动源的伺服电动机，并且产生适于施加到冲压机中的滑块的力。控制装置包括用于指示由模具缓冲机构产生的力的力指令部分; 用于检测由模具缓冲机构产生的力的力检测部分; 电动机速度检测部，用于检测伺服电动机的运转速度; 用于检测滑块的移动速度的滑块速度检测部分; 以及力控制部，其基于由所述力指令部指定的力指令值，由所述力检测部检测到的力检测值，对所述伺服电动机进行力控制，由所述电动机检测出的电动机速度检测值速度检测部和由滑动速度检测部检测到的滑动速度检测值。

8. 发明授权

US07401492B2 Control device for a die cushion mechanism 有权
标题翻译：模具缓冲机构的控制装置
公开(公告)号：US07401492B2
公开(公告)日：2008-07-22
申请号：US11470510
申请日：2006-09-06
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： B21J9/18
CPC分类号： G05B19/416 , B21D24/02 , G05B2219/41251 , G05B2219/45131
摘要： A control device (10) for a die cushion mechanism that produces a force for a slide (24) in a press machine, comprising slide velocity command-forming means (61) for forming a velocity command for the slide (24), die cushion velocity command-forming means (62) for forming a velocity command for said die cushion (20), and velocity relation calculation means (65) for calculating a velocity relation between the velocity of the slide and the velocity of the die cushion based on a rate of increase (dF) in the force produced between the slide and the die cushion immediately after the collision of the slide with the die cushion. The cushion velocity command-forming means forms the velocity command for the die cushion based upon the slide velocity command formed by the slide velocity command-forming means and upon the velocity relation calculated by the velocity relation-calculation means. This makes it possible to form an optimum velocity command for the slide and/or the die cushion.
摘要翻译：一种用于在冲压机中产生滑块（24）的力的冲模缓冲机构的控制装置（10），包括用于形成用于滑块（24）的速度指令的滑动速度指令形成装置（61）用于形成用于所述模具衬垫（20）的速度指令的速度指令形成装置（62），以及速度关系计算装置（65），用于计算滑块的速度和模具缓冲垫的速度之间的速度关系在滑块与模具座碰撞之后立即在滑块和模具垫之间产生的力的增加速度（dF）。缓冲速度指令形成装置基于由滑动速度指令形成装置形成的滑动速度指令和由速度关系计算装置计算出的速度关系，形成模具缓冲器的速度指令。这使得可以形成用于滑动件和/或模具衬垫的最佳速度命令。

9. 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。

10. 发明申请

US20070006632A1 Die cushion mechanism, and device and method for controlling the same 有权
标题翻译：模具缓冲机构及其控制装置及方法
公开(公告)号：US20070006632A1
公开(公告)日：2007-01-11
申请号：US11478633
申请日：2006-07-03
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： B21D24/10
CPC分类号： B21D24/02 , G05B19/416 , G05B2219/42087 , G05B2219/45137
摘要： A device for controlling a die cushion mechanism including a servo-motor as a drive source and producing a force adapted to be applied to a slide in a press machine. The device includes a section for commanding a force to be produced by the die cushion mechanism; a section for detecting a force produced by the die cushion mechanism and applied to the slide; a section for detecting a moving speed of the slide; and a section for executing a force control on the servo-motor. The force controlling section executes force controls in mutually different modes on the servo-motor, through mutually different control loops, one mode being provided for an initial stage defined from an instant when the die cushion mechanism starts producing the force to be applied to the slide until a predetermined subsequent instant, and another mode being provided for a succeeding stage defined after the predetermined subsequent instant, by using at least a slide-speed detected value detected by the slide-speed detecting section. The force controlling section includes a section for preparing a first speed-command value to be commanded to the servo-motor in the initial stage and a second speed-command value, different from the first speed-command value, to be commanded to the servo-motor in the succeeding stage
摘要翻译：一种用于控制模具缓冲机构的装置，其包括作为驱动源的伺服电动机，并且产生适于施加到冲压机中的滑块的力。该装置包括用于指示由模具缓冲机构产生的力的部分; 用于检测由所述模具缓冲机构产生并施加到所述滑块的力的部分; 用于检测滑块的移动速度的部分; 以及用于在伺服电动机上执行力控制的部分。力控制部通过相互不同的控制回路在伺服电动机上以相互不同的模式执行力控制，一个模式被提供用于从模具缓冲机构开始产生施加到滑块的力的时刻开始的初始阶段直到预定的后续时刻，并且通过至少使用由滑动速度检测部检测到的滑动速度检测值，为在预定的后续时刻之后定义的后续阶段提供另一模式。力控制部包括用于准备要在初始阶段对伺服电动机指令的第一速度指令值和与第一速度指令值不同的第二速度指令值的部分，以指令伺服在接下来的阶段

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