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1. 发明授权

US5726881A Centrifugal apparatus with overspeed protection 失效
标题翻译：带超速保护的离心式设备
公开(公告)号：US5726881A
公开(公告)日：1998-03-10
申请号：US514814
申请日：1995-08-14
申请人： Masahiro Inaniwa , Shinji Watanabe , Nobuharu Kido , Noriyasu Matsufuji , Yoshitaka Niinai , Osamu Kawanobe
发明人： Masahiro Inaniwa , Shinji Watanabe , Nobuharu Kido , Noriyasu Matsufuji , Yoshitaka Niinai , Osamu Kawanobe
IPC分类号： B04B9/10 , B04B13/00 , G05B9/02
CPC分类号： G05B9/02 , B04B13/003 , B04B9/10
摘要： A centrifugal apparatus includes a rotor having a marker for generating an index signal, a motor for rotating the rotor, first and second detectors for detecting the index signal with rotation of the rotor to generate first and second detection signals, an input terminal for receiving supply power, a drive circuit for generating a drive signal from the supply power according to the first detection signal, and first and second switch circuits for controlling the supply of the drive signal to the motor. First and second judging portions are used to detect whether the first and second detection signals are respectfully generated within a given condition. The first judging portion operates the first switch circuit to stop the drive signal from being supplied to the motor when the first detection signal is not generated within the given condition, while said second judging portion operates the second switch circuit to stop the drive signal from being supplied to the motor when the second detection signal is not generated within the given condition. The first and second detectors, judging portions, and switch circuits, respectively, independently operate to provide double feedback loops, so that an overspeed or the like is prevented.
摘要翻译：一种离心装置，包括具有用于产生指标信号的标记的转子，用于使转子旋转的电动机，第一和第二检测器，用于通过转子的旋转来检测指标信号以产生第一和第二检测信号;输入端，用于接收供给电源，用于根据第一检测信号从供电产生驱动信号的驱动电路，以及用于控制向电动机提供驱动信号的第一和第二开关电路。第一和第二判断部分用于检测在给定条件下是否尊重生成第一和第二检测信号。当在给定条件下不产生第一检测信号时，第一判断部分操作第一开关电路以停止驱动信号被提供给电动机，而所述第二判断部分操作第二开关电路以停止驱动信号当在给定条件下不产生第二检测信号时提供给电动机。第一和第二检测器，判断部分和开关电路分别独立地操作以提供双反馈回路，从而防止超速等。

2. 发明授权

US5608301A Motor control system for centrifugal machine 失效
标题翻译：离心机电机控制系统
公开(公告)号：US5608301A
公开(公告)日：1997-03-04
申请号：US495962
申请日：1995-06-28
申请人： Masahiro Inaniwa , Nobuharu Kido , Takahiro Fujimaki , Shinji Watanabe , Noriyasu Matsufuji , Yoshinori Tobita
发明人： Masahiro Inaniwa , Nobuharu Kido , Takahiro Fujimaki , Shinji Watanabe , Noriyasu Matsufuji , Yoshinori Tobita
IPC分类号： H02M5/458 , H02P23/06 , H02M7/539
CPC分类号： H02M5/4585 , H02P23/07 , H02P2201/03 , H02P2201/07
摘要： A power control apparatus for controlling power supplied to an electric motor rotating a rotor employed in a centrifuge is provided. The power control apparatus includes first and second inverters and a smoothing capacitor disposed between the first and second inverters. In a motor power mode, the first inverter charges the smoothing capacitor with power supplied by an AC power supply, while the second inverter charges, in a motor braking mode, the smoothing capacitor with power regenerated by the motor during a braking operation for returning the regenerated power back to the AC power supply through the first inverter. An reactor is arranged between the AC power supply and the first inverter for reducing harmonic components contained in the current supplied from or back to the AC power supply.
摘要翻译：提供一种功率控制装置，用于控制向离心机中使用的转子旋转的电动机的供给。功率控制装置包括第一和第二反相器和设置在第一和第二反相器之间的平滑电容器。在电动机功率模式中，第一变换器用交流电源供电的电力对平滑电容器充电，而第二变换器在电动机制动模式下对制动操作期间电动机再生电力的平滑电容器进行充电，通过第一个逆变器将再生的电力返回给交流电源。在交流电源和第一逆变器之间设置一个电抗器，用于减少由交流电源供给或返回的电流中包含的谐波分量。

3. 发明授权

US5731681A Motor control system for centrifugal machine 失效
标题翻译：离心机电机控制系统
公开(公告)号：US5731681A
公开(公告)日：1998-03-24
申请号：US800902
申请日：1997-02-12
申请人： Masahiro Inaniwa , Nobuharu Kido , Takahiro Fujimaki , Shinji Watanabe , Noriyasu Matsufuji , Yoshinori Tobita
发明人： Masahiro Inaniwa , Nobuharu Kido , Takahiro Fujimaki , Shinji Watanabe , Noriyasu Matsufuji , Yoshinori Tobita
IPC分类号： H02M5/458 , H02P23/06 , H02M7/539
CPC分类号： H02M5/4585 , H02P23/07 , H02P2201/03 , H02P2201/07
摘要： A power control apparatus for controlling power supplied to an electric motor rotating a rotor employed in a centrifuge is provided. The power control apparatus includes first and second inverters and a smoothing capacitor disposed between the first and second inverters. In a motor power mode, the first inverter charges the smoothing capacitor with power supplied by an AC power supply, while the second inverter charges, in a motor braking mode, the smoothing capacitor with power regenerated by the motor during a braking operation for returning the regenerated power back to the AC power supply through the first inverter. An reactor is arranged between the AC power supply and the first inverter for reducing harmonic components contained in the current supplied from or back to the AC power supply.
摘要翻译：提供一种功率控制装置，用于控制向离心机中使用的转子旋转的电动机的供给。功率控制装置包括第一和第二反相器和设置在第一和第二反相器之间的平滑电容器。在电动机功率模式中，第一变换器用交流电源供电的电力对平滑电容器充电，而第二变换器在电动机制动模式下对制动操作期间电动机再生电力的平滑电容器进行充电，通过第一个逆变器将再生的电力返回给交流电源。在交流电源和第一逆变器之间设置电抗器，用于减少由AC电源供给的电流中包含的谐波成分。

4. 发明授权

US5917688A Centrifugal apparatus with protection 失效
标题翻译：离心机保护
公开(公告)号：US5917688A
公开(公告)日：1999-06-29
申请号：US948413
申请日：1997-10-09
申请人： Nobuharu Kido , Satoshi Numata , Koji Unno
发明人： Nobuharu Kido , Satoshi Numata , Koji Unno
IPC分类号： B04B9/10 , B04B13/00 , G01P3/486 , H02H7/093 , H02H3/00
CPC分类号： H02H7/093 , B04B9/10 , G01P3/486 , Y10S388/924
摘要： A centrifugal apparatus is disclosed which includes a rotor, a motor, a speed signal generator, including a disc having alternate reflective and non-reflective stripes, for generating a rotating speed signal of the rotor, a microprocessor (mpu), an analog processing circuit. The rotating speed of the rotor is judged by both the microprocessor and the analog processing circuit including a F/V converter and a voltage comparator independently, so that an overspeed condition is prevented. The mpu may further detect a motor rotating speed and compare the variation in the rotating speed signal of the rotor and the rotating speed of the motor. If the difference exceeds a reference, the mpu stops the rotor. Another disc of which reflective strip is replaced by a non reflective strip may be provided to the rotor and a pulse compensation circuit for compensating the lack of the pulse in the rotating speed signal is also provided. This type of the disc is provided to distinguish the types of these rotors. The pulse compensation circuit detects the lack of the pulse and then, generates and adds a pulse to the rotating speed signal.
摘要翻译：公开了一种离心装置，其包括转子，马达，速度信号发生器，其包括具有交替反射和非反射条纹的盘，用于产生转子的转速信号，微处理器（mpu），模拟处理电路。微处理器和包括F / V转换器和电压比较器的模拟处理电路都独立地判断转子的转速，从而防止超速状态。 mpu可以进一步检测电动机转速，并比较转子的转速信号与电动机转速的变化。如果差值超过参考值，则mpu停止转子。还可以向转子提供哪个反射条替换为另一个反射条的盘，并且还提供用于补偿转速信号中的脉冲不足的脉冲补偿电路。提供这种类型的盘以区分这些转子的类型。脉冲补偿电路检测脉冲的不足，然后产生并向转速信号加上一个脉冲。

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