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1.发明申请MOTOR DRIVE APPARATUS HAVING POWER FAILURE DETECTION UNIT FOR DETERMINING PRESENCE OR ABSENCE OF POWER FAILURE 有权具有电源故障检测单元的电机驱动装置用于确定电源故障的存在或不存在公开(公告)号：US20130134910A1
公开(公告)日：2013-05-30
申请号：US13612975
申请日：2012-09-13
申请人： Yasusuke IWASHITA , Tadashi OKITA , Masakazu NIWA
发明人： Yasusuke IWASHITA , Tadashi OKITA , Masakazu NIWA
IPC分类号： H02P3/14
CPC分类号： H02P3/14 , B29C45/7666 , B29C2045/7673 , H02P5/74 , H02P27/06 , Y02P70/26 , Y02P70/261
摘要： A motor drive apparatus includes a rectifier which converts AC power to DC power and DC power to AC power, an inverter which converts the DC power output by the rectifier to AC power and supplies the AC power to a motor, and which converts regenerative power from the motor to DC power and returns the DC power to the rectifier, a DC voltage detection unit which detects a DC output voltage of the rectifier, an AC voltage detection unit which detects an AC output voltage of the rectifier, a frequency calculation unit which calculates the frequency of the AC voltage; a storage unit which stores as a reference value the DC voltage at the start of the regenerative operation, and a power failure detection unit which determines the presence or absence of a power failure by using the DC voltage, the reference value, and the AC voltage frequency.
摘要翻译： 一种电动机驱动装置，其特征在于包括：将交流电转换为直流电，直流电到交流电的整流器;将由整流器输出的直流电力转换成交流电的逆变器，将交流电力提供给电动机， 电动机直流供电并返回到整流器的直流电力;检测整流器的直流输出电压的直流电压检测单元;检测整流器的交流输出电压的交流电压检测单元，计算整流器的交流输出电压的频率计算单元; 交流电压的频率; 存储单元，其以再生操作开始时的DC电压作为参考值存储;以及停电检测单元，其通过使用所述DC电压，所述参考值和AC电压来确定是否存在电力故障 频率。
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公开(公告)号：US20100214809A1
公开(公告)日：2010-08-26
申请号：US12642180
申请日：2009-12-18
IPC分类号： H02M7/217
CPC分类号： H02M7/219 , H02M2001/0048 , Y02B70/1491
摘要： Disclosed is a PWM rectifier in which switching losses in a semiconductor device are reduced without degrading the response of a control system. In a PWM overmodulation region, the modulation scheme is set to a three-phase modulation scheme. In other regions, a switchover condition such as the amplitude of an input current is acquired and compared with a switchover level. If the switchover condition equals or exceeds the switchover level, the modulation scheme is switched over to a modified two-phase modulation scheme which reduces the number of switching operations to two thirds for the same PWM frequency.
摘要翻译： 公开了一种PWM整流器，其中半导体器件中的开关损耗减小而不降低控制系统的响应。 在PWM过调制区域中，将调制方案设置为三相调制方案。 在其他区域中，获取诸如输入电流的幅度的切换条件并与切换电平进行比较。 如果切换条件等于或超过切换级别，则将调制方案切换到修改的两相调制方案，将相同PWM频率的切换次数减少到三分之二。
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公开(公告)号：US20110182398A1
公开(公告)日：2011-07-28
申请号：US12958690
申请日：2010-12-02
申请人： Yasusuke IWASHITA , Tadashi Okita , Masakazu Niwa
发明人： Yasusuke IWASHITA , Tadashi Okita , Masakazu Niwa
IPC分类号： G01R19/00
CPC分类号： H02H3/247 , G01R31/42 , H02H7/0833 , H02P29/00
摘要： A motor driving device that accurately achieves power failure detection according to a power failure tolerance with a relatively simple configuration. A counter input computing unit determines, as a counter input value, a value that is inversely proportional to the power failure tolerance determined from a voltage amplitude value and supplies the counter input value to a counter. The counter accumulates the input value at predetermined intervals and outputs an output value. A comparator determines that power failure occurs if the output of the counter 42 exceeds a threshold value.
摘要翻译： 一种电动机驱动装置，其以相对简单的结构，根据电力故障容限精确地实现停电检测。 计数器输入计算单元确定作为计数器输入值的与电压振幅值确定的停电容限成反比的值，并将计数器输入值提供给计数器。 计数器以预定间隔累积输入值并输出输出值。 如果计数器42的输出超过阈值，则比较器确定发生电源故障。
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公开(公告)号：US20110175557A1
公开(公告)日：2011-07-21
申请号：US12965432
申请日：2010-12-10
申请人： Yasusuke IWASHITA , Tadashi OKITA , Masakazu NIWA
发明人： Yasusuke IWASHITA , Tadashi OKITA , Masakazu NIWA
IPC分类号： H02P27/06
CPC分类号： H02P23/06
摘要： A motor driving apparatus wherein provisions are made to ensure that the regenerative operation of a rectifier continues as long as the supply of power from an inverter continues, and that the regenerative operation of the rectifier stops when the supply of power from the inverter ends. The apparatus includes: a detection unit which detects an input voltage and current; an instantaneous effective power calculation unit which, based on the detected input voltage and current, calculates instantaneous effective power supplied from the rectifier to the inverter; a DC component calculation unit which, based on the value of the calculated power, calculates the DC component of the effective power; and a regenerative operation stopping decision unit which compares the value of the calculated DC component with a predetermined threshold value and decides that a power regeneration operation for feeding regenerative power from the inverter back into the power supply be stopped.
摘要翻译： 一种电动机驱动装置，其中设置用于确保整流器的再生运行继续进行，只要逆变器的电力供应继续供电，并且当逆变器的电力供应终止时，整流器的再生操作停止。 该装置包括：检测单元，其检测输入电压和电流; 瞬时有效功率计算单元，基于检测到的输入电压和电流，计算从整流器向逆变器提供的瞬时有效功率; DC分量计算单元，其基于所计算的功率的值，计算有效功率的DC分量; 以及再生运转停止判定单元，其将所计算出的直流分量的值与预定阈值进行比较，并且决定用于将来自逆变器的再生电力馈送回电源的电力再生操作停止。
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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。
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公开(公告)号：US20070084264A1
公开(公告)日：2007-04-19
申请号：US11550330
申请日：2006-10-17
IPC分类号： B21D22/21
CPC分类号： G05B19/19 , B21D24/02 , G05B2219/42087 , G05B2219/42123 , G05B2219/45143
摘要： A die cushion controller, for driving a die cushion, disposed in opposition to a slide of a press machine, by controlling a servo motor, including: a pressure command portion which prepares a pressure command value for exerting a predetermined pressure to a press material disposed between the slide and the die cushion; a pressure detecting portion which detects an actual pressure exerted on the press material; a speed correction value preparing portion which prepares a speed correction value by multiplying a differential value of the pressure command value prepared by the pressure command portion by a coefficient; and a first speed command portion which prepares a speed command value to be instructed to the servo motor based on the pressure command value prepared by the pressure command portion, the actual pressure detected by the pressure detecting portion, and the speed correction value prepared by the speed correction value preparing portion.
摘要翻译： 一种模具缓冲控制器，用于通过控制伺服电动机来驱动与冲压机的滑动相对设置的模具缓冲垫，包括：压力指令部分，其为制备的压力材料制备用于施加预定压力的压力指令值 滑块和模座之间; 压力检测部，其检测施加在所述挤压材料上的实际压力; 速度校正值准备部，其通过将由所述压力指令部准备的所述压力指令值的差分值乘以系数来准备速度校正值; 以及第一速度指令部，其基于由压力指令部准备的压力指令值，由压力检测部检测出的实际压力和由该压力指令部分准备的速度修正值，准备要指示给伺服电动机的速度指令值 速度校正值准备部。
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公开(公告)号：US20120068636A1
公开(公告)日：2012-03-22
申请号：US13215499
申请日：2011-08-23
IPC分类号： H02P3/14
CPC分类号： H02M5/4585 , H02P3/14 , H02P6/085 , H02P6/28 , H02P7/281
摘要： When the output of motor reaches or exceeds a predetermined value during acceleration of the motor, the control target value of the DC link voltage which is the voltage of a power storage device is gradually lowered in corresponding relationship to the motor output. When the motor enters a constant speed control mode, the DC link control target value is maintained at a constant level. When the motor enters a deceleration control mode, the DC link control target value is gradually raised in corresponding relationship to the motor output, and regenerative power is recovered by the power storage device and reused in the next control cycle.
摘要翻译： 当电动机的加速期间电动机的输出达到或超过预定值时，作为蓄电装置的电压的直流母线电压的控制目标值与电动机输出相对应地逐渐降低。 当电机进入恒速控制模式时，直流链路控制目标值保持恒定。 当电动机进入减速控制模式时，直流母线控制目标值与电动机输出相对应地逐渐升高，再生电力由蓄电装置恢复并在下一个控制周期中重新使用。
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公开(公告)号：US20080116831A1
公开(公告)日：2008-05-22
申请号：US11938055
申请日：2007-11-09
CPC分类号： H02P31/00 , G05B2219/34445
摘要： A motor control apparatus comprises a control processing unit (3) creating a motor drive command, power supply processing units (2A to 2D) supplying a driving voltage to a motor, and a signal relay processing unit (4) supplying the motor drive command received from unit (3) to power supply processing units (2A to 2D). Control processing unit (3) transmits a preparation request flag to power supply processing units (2A to 2D) via signal relay processing unit (4), which includes a preparation complete flag register storing preparation complete flags each transmitted from each of power supply processing units (2A to 2D) to indicate the completion of preparation for supplying power to the motor, and transmits a preparation complete flag enabled state to control processing unit (3) if contents of the preparation complete flag register indicate that the preparation is completed in all units (2A to 2D).
摘要翻译： 一种电动机控制装置，包括：产生电动机驱动指令的控制处理单元（3）;向电动机供给驱动电压的电源处理单元（2A〜2D）;以及供给电动机驱动的信号中继处理单元 命令从单元（3）接收到电源处理单元（2A到2D）。 控制处理单元（3）经由信号中继处理单元（4）向电源处理单元（2A〜2D）发送准备请求标志，该单元包括准备完成标志寄存器，存储准备完成标志，每个从每个电源发送 处理单元（2A至2D），以指示为电动机供电的准备完成，并且如果准备完成标志寄存器的内容表明该准备是准备就绪，则将准备完成标志使能状态发送到控制处理单元（3） 在所有单位完成（2 A至2 D）。
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公开(公告)号：US20070006629A1
公开(公告)日：2007-01-11
申请号：US11428344
申请日：2006-06-30
IPC分类号： B21D22/21
CPC分类号： B21D24/02 , G05B19/416
摘要： A control device, for a servo die cushion, for precisely performing force control without using a force detector. The control device includes a slide position detecting part for detecting the position of the slide, a storing part for storing information representing a relation between the position of the slide and the speed of the die cushion, the information being predetermined such that the force between the slide and the die cushion is set to a desired force and a die cushion speed commanding part for generating a speed command of the die cushion based on the information and the position of the slide detected by the slide position detecting part.
摘要翻译： 一种用于伺服模具垫的控制装置，用于在不使用力检测器的情况下精确地执行力控制。 控制装置包括用于检测滑块的位置的滑动位置检测部分，用于存储表示滑块的位置与模具缓冲器的速度之间的关系的信息的存储部分，该信息被预先确定， 基于由滑动位置检测部检测到的滑块的信息和位置，将模具衬垫设定为期望的力和模具缓冲速度指令部分，用于产生模具缓冲器的速度指令。
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10.发明申请公开(公告)号：US20110046773A1
公开(公告)日：2011-02-24
申请号：US12793337
申请日：2010-06-03
IPC分类号： G05B19/4097
CPC分类号： G05B19/4097
摘要： Time information t and positional information about each axis are obtained, and the three-dimensional coordinates of tool center point Pe at time t are calculated to display the path of the tool center point Pe at time t. Then, whether a fixed time has elapsed or not is decided. If the fixed time has elapsed, the coordinates of the tool vector start point Ps at time t are calculated to display a line segment connecting between tool vector start point Ps and tool center point Pe, which is the end point of the tool vector. This display enables the orientation of the tool at each tool center point to be grasped at a glance.
摘要翻译： 时间信息t和关于每个轴的位置信息被获得，并且计算在时间t的工具中心点Pe的三维坐标，以在时间t显示工具中心点Pe的路径。 然后，确定是否经过固定时间。 如果经过固定时间，则计算时刻t的刀具矢量开始点Ps的坐标，以显示连接刀具矢量开始点Ps和作为刀具矢量的终点的刀具中心点Pe之间的线段。 该显示使得能够一目了然地掌握各工具中心点处的工具的取向。
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