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1.发明授权
公开(公告)号：US5971714A
公开(公告)日：1999-10-26
申请号：US863115
申请日：1997-05-27
CPC分类号： F04C15/0049 , F04B11/0041 , F04B11/0058 , F04B49/065 , F04B2203/00 , F04B2203/0213
摘要： The construction and operation of the control of this invention is designed to minimize pressure changes at pump changeover by sampling pump pressure characteristics for each pump cycle, calculating a compensating motion profile and applying the profile to the motor which drives the pump. This control can be used with any pump which has the following characteristics: positive displacement, repeating cycle characteristics, rotary motor drive and an output pressure cycle curve which never falls to zero.
摘要翻译： 本发明的控制的结构和操作被设计成通过对每个泵循环的泵压力特性进行取样来最小化泵切换时的压力变化，计算补偿运动曲线并将轮廓应用于驱动泵的马达。 该控制可用于具有以下特征的任何泵：正位移，重复循环特性，旋转电机驱动和不会降至零的输出压力循环曲线。
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公开(公告)号：US06394771B2
公开(公告)日：2002-05-28
申请号：US09794539
申请日：2001-02-26
IPC分类号： F04B4308
CPC分类号： A61M5/16831 , F04B43/082 , F04B2203/0213
摘要： A system for increasing the volumetric flow uniformity of fluid pumped through a conduit by an infusion pump. A pumping mechanism operates in identifiable step movements that are broken down into microstep movements that are then grouped into packets. The pumping mechanism controls the period of each microstep, so that the sum of the microstep periods in a packet is essentially equal to the packet period, with little or no waiting time on the motor. The motor preferably begins moving the assigned microsteps in each packet immediately upon the beginning of the time period, but controls the period of the microsteps for that packet.
摘要翻译： 用于增加通过输液泵泵送通过管道的流体的体积流量均匀性的系统。 泵送机构在可识别的步进运动中运行，其被分解成微步运动，然后将其分组成分组。 泵送机构控制每个微步的周期，使得分组中的微步周期的总和基本上等于分组周期，马达上几乎没有或没有等待时间。 马达优选地在时间段开始时立即开始移动每个分组中的分配的微步，但是控制该分组的微步的周期。
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公开(公告)号：US20010007636A1
公开(公告)日：2001-07-12
申请号：US09794539
申请日：2001-02-26
IPC分类号： F04B049/00 , F04B043/12
CPC分类号： A61M5/16831 , F04B43/082 , F04B2203/0213
摘要： A system for increasing the volumetric flow uniformity of fluid pumped through a conduit by an infusion pump. A pumping mechanism operates in identifiable step movements that are broken down into microstep movements that are then grouped into packets. The pumping mechanism controls the period of each microstep, so that the sum of the microstep periods in a packet is essentially equal to the packet period, with little or no waiting time on the motor. The motor preferably begins moving the assigned microsteps in each packet immediately upon the beginning of the time period, but controls the period of the microsteps for that packet.
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公开(公告)号：US5932987A
公开(公告)日：1999-08-03
申请号：US60524
申请日：1998-04-14
申请人： Robert F. McLoughlin
发明人： Robert F. McLoughlin
CPC分类号： H02P8/22 , F04B49/065 , H02P8/12 , H02P8/18 , F04B2203/0213
摘要： A method and apparatus for controlling a low volume, low rate precision dispensing pump for photochemicals and the like comprises generating constant current signals having magnitudes related by sin and cos values to the angular step size of the stepper motor pump, and varying the magnitudes smoothly over an incremental range of angles to vary the quantity of liquid dispensed. The step size and step rate can be varied to provide a desired liquid dispense rate. The magnitude of the current applied to the motor is ramped up and down while maintaining constant the relative relationships in the magnitudes of the currents applied in order to smoothly step the motor over a desired step angle.
摘要翻译： 用于控制用于光化学物质等的低体积，低速率精密分配泵的方法和装置包括产生具有与sin和cos值相关的量级的恒定电流信号到步进电机泵的角步长，并且平稳地改变幅度 增加角度范围，以改变分配的液体数量。 可以改变步长和步进速率以提供所需的液体分配速率。 施加到电动机的电流的大小上升和下降，同时保持所施加电流的大小的相对关系恒定，以使电动机平滑地步进所需的步进角。
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公开(公告)号：US09163625B2
公开(公告)日：2015-10-20
申请号：US14359072
申请日：2012-11-15
CPC分类号： F04B49/06 , F04B17/03 , F04B49/065 , F04B2203/0201 , F04B2203/0202 , F04B2203/0204 , F04B2203/0209 , F04B2203/0213 , H02P1/42 , H02P5/68 , H02P6/18 , H02P6/28
摘要： In order to realize, without inviting cost increase, a control for maintaining a pressure of fluid delivered from a pump at a target value, a pump control unit is provided with a driver control unit controlling a rotational speed of a hydraulic pump through adjustment of a duty ratio of a PWM signal driving excitation coils of an electric motor. Further, the pump control unit is provided also with a signal correction circuit configured to convert a current flowing in the excitation coils to a voltage signal with using a shunt resistor and to divide the voltage signal with using a voltage division ratio setting circuit and to shorten an ON signal of the PWM signal by increasing the divided voltage. The voltage division ratio setting circuit has a characteristics of setting the divided voltage higher, the longer an ON period of the PWM signal.
摘要翻译： 为了实现在不增加成本的情况下，将从泵输送的流体的压力保持在目标值的控制，泵控制单元设置有驱动器控制单元，其通过调整液压泵的调节来控制液压泵的转速 驱动电动机的励磁线圈的PWM信号的占空比。 此外，泵控制单元还设置有信号校正电路，该信号校正电路被配置为使用分流电阻器将在励磁线圈中流动的电流转换为电压信号，并且使用分压比设置电路来分频电压信号并缩短 PWM信号的ON信号通过增加分压。 分压比设定电路具有将分压电压设定得较高的特性，PWM信号的导通周期越长。
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公开(公告)号：US08794931B2
公开(公告)日：2014-08-05
申请号：US13332080
申请日：2011-12-20
申请人： Hideyuki Takahashi
发明人： Hideyuki Takahashi
CPC分类号： F04B49/00 , A61B17/3203 , A61B2017/00154 , F04B13/00 , F04B17/03 , F04B49/06 , F04B2203/0213
摘要： A fluid ejection device includes: a pulse generation unit that changes the volume of a fluid chamber using a volume changing section to eject pulsating flow; a fluid supply unit including a pump chamber and a pump chamber volume changing section that changes the volume of the pump chamber to supply the fluid to the pulse generation unit; a drive control unit that inputs a pulsating flow drive signal for driving the pump chamber volume changing section and inputs a fluid supply drive signal for driving the fluid supply unit; and an operation command input unit that inputs an operation command to the drive control unit, wherein the fluid supply drive signal and the pulsating flow drive signal are input in conjunction with the input of the operation command.
摘要翻译： 流体喷射装置包括：脉冲发生单元，其使用体积变化部改变流体室的体积，以喷射脉动流; 流体供应单元，包括泵室和泵室容积改变部分，其改变泵室的容积以向所述脉冲产生单元供应流体; 驱动控制单元，其输入用于驱动所述泵室容积变化部的脉动流动驱动信号，并输入用于驱动所述流体供给单元的流体供给驱动信号; 以及操作命令输入单元，其向所述驱动控制单元输入操作命令，其中所述流体供应驱动信号和所述脉动流驱动信号与所述操作命令的输入一起被输入。
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公开(公告)号：US06981402B2
公开(公告)日：2006-01-03
申请号：US10452040
申请日：2003-05-30
申请人： L. Rodney Bristol
发明人： L. Rodney Bristol
CPC分类号： H02P7/29 , F04B49/20 , F04B2203/0209 , F04B2203/0213 , F04D15/0066 , G05D7/0676 , H02P6/182
摘要： A system and method for measuring fluid flow rate in a system where fluid is pumped, such as a gas monitoring instrument where gas is pumped from a space such as a room or enclosure through a conduit to a sensor. The flow of gas through a pump is determined by measuring motor back-e.m.f. which is proportional to motor speed. In a system where motor speed is regulated by pulse width modulation of the motor drive voltage, the back-e.m.f. is sampled during intervals between the drive pulses applied to the motor, and in a further aspect the sampling is done at selected, spaced-apart or infrequent intervals such as once for every ten or once for every hundred motor drive pulses. Advantageously, in an instrument that uses a microprocessor and analog-to-digital converter to measure gas-concentration, the same microprocessor and converter can provide the PWM control of the pump, in response to the back-e.m.f. generated by the pump motor between the drive pulses. The microprocessor compares the output of the analog-to-digital converter, corresponding to the back-e.m.f., which in turn corresponds to the pump motor speed, to a set-point value, representative of the desired pump motor speed. The processor then adjusts the PWM to control the pump motor to achieve and maintain the desired speed. As a result, in a gas monitor, the gas-flow rate may be maintained close to a desired gas flow rate regardless of the voltage supplied by the battery or other voltage source, regardless of the degree to which the gas is filtered, and under a wide range of operating conditions.
摘要翻译： 用于测量流体被泵送的系统中的流体流速的系统和方法，例如气体监测仪器，其中气体通过导管从诸如房间或外壳的空间泵送到传感器。 通过泵的气体流量通过测量电机来确定。 这与电机速度成正比。 在通过电机驱动电压的脉冲宽度调制来调节电机速度的系统中， 在施加到电动机的驱动脉冲之间的间隔期间被采样，并且在另一方面中，以选定的，间隔的或不频繁的间隔进行采样，例如对于每百个电动机驱动脉冲每十或一次进行一次。 有利地，在使用微处理器和模拟 - 数字转换器来测量气体浓度的仪器中，相同的微处理器和转换器可以响应于后面的方式提供泵的PWM控制。 由泵电机产生的驱动脉冲之间。 微处理器将对应于反电动势的模数转换器的输出（反过来称为泵电机转速）与表示所需泵电机转速的设定值进行比较。 然后，处理器调整PWM以控制泵电机以实现和保持所需的速度。 结果，在气体监测器中，无论气体被过滤的程度如何，气体流量可以保持接近期望的气体流速，而与电池或其他电压源所提供的电压无关 广泛的运行条件。
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公开(公告)号：US6135577A
公开(公告)日：2000-10-24
申请号：US103938
申请日：1998-06-25
申请人： Tomoyuki Ishii
发明人： Tomoyuki Ishii
CPC分类号： B60T13/14 , B60T8/4045 , F04B49/065 , F04B2203/0201 , F04B2203/0202 , F04B2203/0213 , F04B2205/064 , F04B2205/07 , F04B2205/13 , F04B2207/043
摘要： In a pump operation control apparatus for a hydraulic brake boosting system, an ECU 13 is provided with a timer 16 to which an output signal from a brake switch 12 is supplied and a pump-operation-control-signal generating means 17 for transmitting a signal for operating and controlling a motor 9 in response to an output signal from the timer 16. When the brake switch 12 has been switched on, the operation of the pump is started. After predetermined time T has elapsed from a moment at which the brake switch 12 has been switched on, the operation of the pump is interrupted. If the brake switch 12 is continuously switched on after the predetermined time T has elapsed, the pump is operated for time elongated from the predetermined time T until the brake switch 12 is switched off. If the brake switch 12 is again switched on before the predetermined time T elapses, the pump is operated until the predetermined time T elapses from the moment at which the brake switch 12 has again been switched on.
摘要翻译： 在液压制动器升压系统的泵运转控制装置中，ECU13具有：来自制动开关12的输出信号的定时器16;以及用于发送信号的泵运转控制信号生成单元17 用于响应于来自定时器16的输出信号来操作和控制电动机9.当制动开关12接通时，泵的操作开始。 在从制动开关12接通的时刻经过了预定时间T之后，泵的操作被中断。 如果在经过预定时间T之后制动开关12连续接通，则泵从预定时间T延长到制动开关12关闭的时间。 如果制动开关12在经过预定时间T之前再次接通，则泵将被操作直到从制动开关12再次接通的时刻经过预定时间T。
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公开(公告)号：US5695092A
公开(公告)日：1997-12-09
申请号：US582268
申请日：1996-01-03
申请人： Henry M. Schrandt
发明人： Henry M. Schrandt
CPC分类号： G01F25/0092 , F04B49/065 , F04B2203/0213 , F04B2205/09 , F04B2207/702
摘要： In a treatment system for feeding a liquid from a tank having an outlet by a controllable pump operated cyclically, an automatic calibration/measuring system. The system is arranged for determining the volume of liquid pumped each cycle of the pump, a fluid flow measuring device and a controller coupled thereto. The fluid flow measuring device is in fluid communication with the tank. The fluid flow measuring device has a totalizer counter and batch measurement capability. The batch value in units of fluid volume or mass measurement is configured into the fluid flow measuring device. At the start of the batch, the fluid flow measuring device sends a ready signal to the controller that it is waiting to start the batch. The controller sends a start signal to the fluid flow measuring device that will initialize (zero reset) the totalizer counter and also tells the fluid flow measuring device that the batch has started and the totalizer to start the count of flow measurement. When the totalizer value equals the batch value, a batch complete signal is sent from the fluid flow measuring device to the controller. The batch complete signal defines a predetermined volume by which the controller measures and automatically calibrates this system. The controller in this system determines the actual number of cycles of operation of the pump required to pump the predetermined volume and if that number has deviated from a pre-established number. If so, the pump is controlled in response to the detected deviation.
摘要翻译： 在用于通过循环操作的可控制的泵从具有出口的罐供给液体的处理系统中，自动校准/测量系统。 该系统被布置用于确定泵的每个循环泵送的液体的体积，流体流量测量装置和与其耦合的控制器。 流体流量测量装置与罐流体连通。 流体流量测量装置具有累加器计数器和批量测量能力。 以流体体积或质量测量为单位的批次值被配置到流体流量测量装置中。 在批量开始时，流体流量测量装置向控制器发送其正在等待启动批次的就绪信号。 控制器向流量测量装置发送启动信号，该装置将初始化（零复位）累加器计数器，并告知流量测量装置批量已启动，累加器开始流量测量计数。 当累加器值等于批次值时，批量完成信号从流体流量测量装置发送到控制器。 批量完成信号定义了控制器测量并自动校准该系统的预定体积。 该系统中的控制器确定泵预定体积所需的泵的实际循环次数，并且该数量已偏离预先确定的数量。 如果是这样，则响应于检测到的偏差来控制泵。
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公开(公告)号：US20140286793A1
公开(公告)日：2014-09-25
申请号：US14359072
申请日：2012-11-15
IPC分类号： H02P23/14
CPC分类号： F04B49/06 , F04B17/03 , F04B49/065 , F04B2203/0201 , F04B2203/0202 , F04B2203/0204 , F04B2203/0209 , F04B2203/0213 , H02P1/42 , H02P5/68 , H02P6/18 , H02P6/28
摘要： In order to realize, without inviting cost increase, a control for maintaining a pressure of fluid delivered from a pump at a target value, a pump control unit is provided with a driver control unit controlling a rotational speed of a hydraulic pump through adjustment of a duty ratio of a PWM signal driving excitation coils of an electric motor. Further, the pump control unit is provided also with a signal correction circuit configured to convert a current flowing in the excitation coils to a voltage signal with using a shunt resistor and to divide the voltage signal with using a voltage division ratio setting circuit and to shorten an ON signal of the PWM signal by increasing the divided voltage. The voltage division ratio setting circuit has a characteristics of setting the divided voltage higher, the longer an ON period of the PWM signal.
摘要翻译： 为了实现在不增加成本的情况下，将从泵输送的流体的压力保持在目标值的控制，泵控制单元设置有驱动器控制单元，其通过调整液压泵的调节来控制液压泵的转速 驱动电动机的励磁线圈的PWM信号的占空比。 此外，泵控制单元还设置有信号校正电路，该信号校正电路被配置为使用分流电阻器将在励磁线圈中流动的电流转换为电压信号，并且使用分压比设置电路来分频电压信号并缩短 PWM信号的ON信号通过增加分压。 分压比设定电路具有将分压电压设定得较高的特性，PWM信号的导通周期越长。
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