公开(公告)号：US20070133957A1

公开(公告)日：2007-06-14

申请号：US11634267

申请日：2006-12-06

Applicant: Kwang-kyo Oh ,  Koji Hamaoka ,  Han-joo Yoo ,  Pyeong-ki Park ,  Jeong-ho Seo ,  Hun-yub Bae ,  Yun-Jeong Kim

Inventor： Kwang-kyo Oh ,  Koji Hamaoka ,  Han-joo Yoo ,  Pyeong-ki Park ,  Jeong-ho Seo ,  Hun-yub Bae ,  Yun-Jeong Kim

IPC: H02P7/288

CPC classification number: F04B35/04 ,  F04B2203/0201 ,  H02P6/15 ,  H02P6/28

Abstract: A method of controlling the speed of a BLDC (brushless direct current) motor and a method of controlling the cooling speed of a refrigerator using the same. A method of controlling the speed of a BLDC motor includes: inputting a driving signal having a predetermined reference current applying angle to the motor to achieve a predetermined reference speed; measuring a rotating speed of the motor; increasing a current applying angle of the driving signal if the measured rotating speed does not reach the reference speed and the driving signal has reached a maximum input of the motor; and inputting the driving signal having the increased current applying angle to the BLDC motor.

Abstract translation: 控制BLDC（无刷直流）电动机的速度的方法以及使用该电动机控制冰箱的冷却速度的方法。 控制BLDC电动机的速度的方法包括：向电动机输入具有预定参考电流施加角度的驱动信号以实现预定的参考速度; 测量电机的转速; 如果测量的转速没有达到参考速度并且驱动信号已经达到电机的最大输入，则增加驱动信号的电流施加角度; 并将具有增加的电流施加角度的驱动信号输入到BLDC电动机。

公开(公告)号：US20040174650A1

公开(公告)日：2004-09-09

申请号：US10794117

申请日：2004-03-05

Inventor： Arnold G. Wyatt ,  Alex Alvey

IPC: H02H003/08

CPC classification number: H02H7/08 ,  F04B49/065 ,  F04B2203/0201 ,  F04B2203/0205 ,  F04B2203/0212 ,  H02H3/08

Abstract: A compressor terminal fault interruption method and interrupter for disconnecting power to a compressor terminal when terminal venting failure is imminent including a current sensing circuit for sensing current provided to the terminal by a power source and outputting a sensed signal representing the current provided to the terminal and a control circuit. The control circuit includes a first circuit for outputting a reference signal representing input current much higher than locked rotor current, a second circuit connected to the current sensing circuit and the first circuit for comparing the sensed signal to the reference signal, and a third circuit connected to the second circuit for disconnecting power to the terminal when the sensed signal exceeds the reference signal, thereby preventing excessive current from reaching the compressor terminal.

公开(公告)号：US06779982B2

公开(公告)日：2004-08-24

申请号：US10279122

申请日：2002-10-24

Applicant: Kyung-Bum Heo

Inventor： Kyung-Bum Heo

IPC: F04B4906

CPC classification number: F04B49/12 ,  F04B49/065 ,  F04B2203/0201 ,  F04B2203/0202

Abstract: Disclosed is an apparatus for controlling a driving of a reciprocating compressor and a method thereof, in which a cooling capacity is decreased without a re-expansion loss by controlling a driving of a compressor used in a refrigerator by using a current offset when the cooling capacity of a refrigerator is varied. To this end, in the compressor which controls the cooling capacity by varying an inner stroke according to a stroke reference value set by a user, the apparatus comprises a storage unit for storing a current offset value corresponding to a cooling capacity variable amount; an adding unit for adding the current offset value to a current value applied to the compressor in accordance with that the cooling capacity is varied by a user; a microcomputer for generating a switching control signal corresponding to the current value added from the adding unit; and a power supply unit for controlling a driving of the compressor by applying the added current to the compressor under a dependent state on the switching control signal.

Abstract translation: 公开了一种用于控制往复式压缩机的驱动的装置及其方法，其中通过使用当冷却能力时的电流偏移来控制在冰箱中使用的压缩机的驱动来降低冷却能力而不发生再膨胀损失 的冰箱是多样的。 为此，在通过根据用户设定的冲程参考值改变内部行程来控制冷却能力的压缩机中，该装置包括：存储单元，用于存储对应于冷却能力可变量的当前偏移值; 添加单元，用于根据用户改变冷却能力，将当前偏移值与施加到压缩机的当前值相加; 微计算机，用于产生与从所述相加单元相加的当前值相对应的切换控制信号; 以及电源单元，用于通过在所述切换控制信号上的依赖状态下将附加的电流施加到所述压缩机来控制所述压缩机的驱动。

公开(公告)号：US20040064292A1

公开(公告)日：2004-04-01

申请号：US10656091

申请日：2003-09-05

Inventor： Thomas L. Beck ,  Robb G. Anderson ,  Steven J. Olson

IPC: G06F011/30 ,  G06F015/00 ,  G21C017/00

CPC classification number: F04D13/10 ,  E21B43/126 ,  F04B47/02 ,  F04B49/065 ,  F04B2203/0201 ,  F04B2203/0202 ,  F04B2203/0207 ,  F04B2203/0208 ,  F04B2205/00 ,  F04B2205/05 ,  F04D15/0066 ,  F04D15/0088

Abstract: A control system for the operation of a centrifugal pump which may be used for production of gas and/or oil from a well. The control system includes vector feedback model to derive values of torque and speed from signals indicative of instantaneous current and voltage drawn by the pump motor, a pump model which derives values of the fluid flow rate and the head pressure for the pump from torque and speed inputs, a pumping system model that derives from the estimated values of the pump operating parameters an estimated value of a pumping system parameter and controllers responsive to the estimated values of the pumping system parameters to control the pump to maintain fluid level at the pump input near an optimum level.

Abstract translation: 一种用于操作离心泵的控制系统，其可用于从井中产生气体和/或油。 控制系统包括向量反馈模型，以从表示由泵电动机牵引的瞬时电流和电压的信号导出转矩和速度的值，泵模型，其从转矩和速度导出流体流速的值和泵头压力 输入，泵送系统模型，其从泵运行参数的估计值得出泵送系统参数的估计值，以及响应于泵送系统参数的估计值的控制器，以控制泵维持泵输入附近的液位 最佳水平。

公开(公告)号：US06604909B2

公开(公告)日：2003-08-12

申请号：US09819536

申请日：2001-03-27

Applicant: Ivar L. Schoenmeyr

Inventor： Ivar L. Schoenmeyr

IPC: F04B4910

CPC classification number: F04B43/026 ,  F04B43/04 ,  F04B49/022 ,  F04B2203/0201 ,  F04B2203/0205

Abstract: A pump assembly that has a control circuit and a pressure switch which control the operation of a pump motor. The motor drives a positive displacement pump that is coupled to a fluid system. The control circuit includes a pulse width modulator circuit. The control circuit is activated when a pressure switch senses that a line pressure of the fluid system is below a threshold value. The control circuit can either operate in a continuous mode to provide a constant signal to the motor, or a pulse regulating mode to provide a series of pulses to the motor. The pulses begin with a minimum width and gradually increase until a predetermined current limit has been attained, or the motor reaches a full speed with the control circuit in a continuous on state. The speed of the motor will then correspond to the flow demanded by the fluid system. The energy provided by the pulses is varied as a function of changes in peak current drawn by the motor. The peak current is sensed and used to determine the pulse width. Changing the pulse energy varies the speed of the motor.

公开(公告)号：US06599095B1

公开(公告)日：2003-07-29

申请号：US09959515

申请日：2001-10-29

Applicant: Noriyuki Takada ,  Takayuki Yamakawa ,  Hidetoshi Ryu ,  Tetsuo Kawano ,  Koji Kawamoto ,  Toshio Miyano ,  Richard L. Pratt ,  Brian Mackinnon

Inventor： Noriyuki Takada ,  Takayuki Yamakawa ,  Hidetoshi Ryu ,  Tetsuo Kawano ,  Koji Kawamoto ,  Toshio Miyano ,  Richard L. Pratt ,  Brian Mackinnon

IPC: F04B1924

CPC classification number: F04B47/02 ,  F04B49/065 ,  F04B2201/0202 ,  F04B2203/0201 ,  F04B2203/0204

Abstract: A pump off control method comprises detecting the speed of the induction motor and an instantaneous value of secondary current of the induction motor. Down stroke time in every cycle of the pump jack is detected. An average value of instantaneous values of the secondary current of the induction motor in the down stroke time in said every cycle is calculated. An average value reference of the secondary current of the induction motor to be compared with calculated average value of the instantaneous values of the secondary current of the induction motor is set. The calculated average value of the instantaneous values of the secondary current is compared with the average value reference after the down stroke end in each cycle. An occurence of pump off is detected if the calculated average value of the instantaneous values is greater than the average value reference.

Abstract translation: 抽油机控制方法包括检测感应电动机的速度和感应电动机的次级电流的瞬时值。 检测到泵千斤顶的每个周期的下降时间。 计算出所述每个周期中的下行时间内的感应电动机的次级电流的瞬时值的平均值。 设定与感应电动机的二次电流的瞬时值的计算平均值进行比较的感应电动机的次级电流的平均值基准。 将计算出的次级电流的瞬时值的平均值与在每个周期中的下行程结束之后的平均值参考值进行比较。 如果所计算的瞬时值的平均值大于平均值参考值，则检测到泵送的发生。

公开(公告)号：US06577089B1

公开(公告)日：2003-06-10

申请号：US09806364

申请日：2001-09-21

Applicant: Martin Piedl ,  Moe K. Barani ,  Ron Flanary

Inventor： Martin Piedl ,  Moe K. Barani ,  Ron Flanary

IPC: H02P700

CPC classification number: F04B49/065 ,  F04B2203/0201 ,  F04B2203/0207 ,  F04B2205/05 ,  F04B2207/042 ,  Y10S388/929 ,  Y10S388/93

Abstract: A method and apparatus for controlling the output function of a permanent magnet brushless DC motor (20), by sensing an input current to the motor (20), by computing an output torque generated by the motor (20) as a function of the input current to the motor (20), by computing an output pressure for a pump (22) in response to the output torque, by reading a set point pressure, and by comparing the set point pressure to the output pressure, and in response thereto controlling on-off operation of the motor (20). The apparatus includes a sensing circuit (28) and a microelectronic processor (30) for performing these functions.

Abstract translation: 一种方法和装置，用于通过根据所述输入来计算由所述电动机（20）产生的输出转矩，通过感测到所述电动机（20）的输入电流来控制永磁无刷直流电动机（20）的输出功能 通过读取设定点压力，并通过将设定点压力与输出压力进行比较来计算泵（22）的输出压力，并且响应于控制 马达（20）的开 - 关操作。 该装置包括用于执行这些功能的感测电路（28）和微电子处理器（30）。

公开(公告)号：US6056510A

公开(公告)日：2000-05-02

申请号：US980848

申请日：1997-12-01

Applicant: Atsuyuki Miura ,  Hiroya Taniguchi

Inventor： Atsuyuki Miura ,  Hiroya Taniguchi

IPC: F04C23/00 ,  F04B37/14 ,  F04B41/06 ,  F04B49/06 ,  F04C25/02

CPC classification number: F04B41/06 ,  F04B37/14 ,  F04B2203/0201 ,  F04B2203/0209 ,  F04B2205/01

Abstract: A multistage vacuum pump unit having a plurality of separate single-stage pumps connected in series with each other by exhaust pipes, the exhaust pipes each connecting a suction port of one of the adjacent single-stage pumps with an exhaust port of another of the adjacent single-stage pump; motors for driving the separate single-stage pumps respectively; driving device for varying a revolution of one of the single-stage pumps that is at least in contact with an atmospheric side; driving current detection device for detecting a driving current of the motor for driving the single-stage pump that is in contact with the atmospheric side; pressure detection device for detecting a pressure at a vacuum-side inlet; and control device for controlling revolutions of the motors of the single-stage pumps based on the pressure detected by the pressure detection device.

Abstract translation: 一种多级真空泵单元，其具有通过排气管彼此串联连接的多个单独的单级泵，排气管将相邻的单级泵中的一个的吸入口与相邻的另一个的排气口连接 单级泵; 用于分别驱动分开的单级泵的电动机; 用于改变至少与大气侧接触的单级泵之一的转速的驱动装置; 用于检测用于驱动与大气侧接触的单级泵的马达的驱动电流的驱动电流检测装置; 用于检测真空侧入口的压力的压力检测装置; 以及用于基于由压力检测装置检测到的压力来控制单级泵的电动机的转数的控制装置。

公开(公告)号：US6017194A

公开(公告)日：2000-01-25

申请号：US224405

申请日：1998-12-31

Applicant: Howard L. North, Jr.

Inventor： Howard L. North, Jr.

IPC: F04B11/00 ,  F04B49/16 ,  G01N15/14 ,  F04B49/08

CPC classification number: F04B11/0033 ,  F04B49/16 ,  F04B2201/0808 ,  F04B2203/0201 ,  G01N15/1404

Abstract: A method for control of the drive means for a reciprocating piston pump delivering liquid to a spring loaded piston liquid accumulator providing high volume compliance whereby the accumulator liquid volume is controlled within narrow limits by continuous control of power to the pump drive motor. The accumulator achieves high volume compliance by arranging the kinematics of a main spring loading the accumulator piston to have a negative spring rate equal to the sum of all other positive spring rates produced by a second spring used to adjust the accumulator pressure, by the diaphragm (piston), and by a flexure support for a sensor lever. This sensor lever moves with the accumulator diaphragm to actuate an optical sensor producing an electric signal indicative of small changes in liquid volume in the accumulator. This signal in turn continuously modulates the power to the motor driving the pump so as to maintain the accumulator liquid volume close to a datum value during a large portion of the pump delivery cycle. This close control of liquid volume in a high compliance accumulator provides substantially constant pulse free pressure liquid delivery from a pulsatile pump. The second spring may be adjusted to modify this constant pressure without disturbing the balance between positive and negative spring rates. Adjustment may be manual or automatic in response to liquid temperature whereby liquid pressure is automatically increased with lower liquid temperatures to compensate for increased liquid viscosity to maintain liquid flow substantially constant through an apparatus such as flow cytometry used for particle analysis or particle sorting.

Abstract translation: 一种用于控制向往活塞泵的驱动装置的方法，该往复活塞泵将液体输送到弹簧加载的活塞液体蓄液器，其提供高体积顺从性，由此通过对泵驱动马达的功率的连续控制将储液器液体体积控制在狭窄的范围内。 蓄能器通过布置装载蓄能器活塞的主弹簧的运动学来实现高体积顺从性，其具有等于由用于调节蓄能器压力的第二弹簧产生的所有其它正弹簧刚度的总和的负弹簧速率， 活塞）和用于传感器杆的挠曲支撑件。 该传感器杆与蓄能器膜片一起移动以致动光学传感器，产生指示蓄液器中液体体积变化小的电信号。 该信号又连续地调节驱动泵的电动机的功率，以便在泵输送周期的大部分期间将蓄液器液体体积保持接近基准值。 在高顺应性蓄能器中液体体积的这种紧密控制提供了从脉动泵基本上恒定的无脉冲压力的液体输送。 可以调节第二弹簧以改变该恒定压力，而不会妨碍正和负弹簧速率之间的平衡。 调节可以是手动的或自动的，以响应于液体温度，由此随着液体温度的下降自动地增加液体压力，以补偿液体粘度的增加，以通过诸如用于颗粒分析或颗粒分选的流式细胞术的装置维持液体流动基本恒定。

公开(公告)号：US5865602A

公开(公告)日：1999-02-02

申请号：US977927

申请日：1997-11-24

Applicant: Farhad Nozari

Inventor： Farhad Nozari

IPC: F04B1/32 ,  F04B49/06

CPC classification number: F04B1/324 ,  F04B49/06 ,  F04B2201/12051 ,  F04B2203/0201 ,  F04B2207/01 ,  Y10S60/911

Abstract: A control system for an aircraft's electrically driven hydraulic pump. An electronic motor controller having closed loop feedback is utilized to directly control the prime mover speed in response to pump loading.

Abstract translation: 飞机电动液压泵的控制系统。 利用具有闭环反馈的电子马达控制器来响应于泵载荷来直接控制原动机速度。