公开(公告)号：US5777456A

公开(公告)日：1998-07-07

申请号：US730138

申请日：1996-09-30

Applicant: Lynn R. Kern

Inventor： Lynn R. Kern

IPC: H01M10/44 ,  H02J7/00

CPC classification number: H01M10/44 ,  H02J7/0073

Abstract: A charging/discharging apparatus uses constant charging current and constant discharging current to reduce the possibility of building memory in the cells of a battery. Memory reduces battery capacity and eventual failure will result since the cells will refuse to take any charge. A charger circuit includes a current source receiving supply voltage to couple constant charging current to the battery and an amplifier is coupled to receive reference voltage from a source and feedback voltage from the battery to connect supply voltage to the current source when the reference voltage is greater than the feedback voltage. A discharger circuit utilizes a current sink receiving supply voltage to couple constant discharging current to the battery. An amplifier receives reference voltage from a source and feedback voltage from the battery to connect supply voltage to the current sink when the reference voltage is less than the feedback voltage. In both charger and discharger applications the current source or current sink maintains a constant current to the battery independently of the magnitude of voltage of the battery. This use of constant current does not rely on battery voltage to charge the cell and can discharge a cell well below the minimum operating voltage. The apparatus is particularly adaptable to recharge NiCad batteries which require specific conditions to properly charge and deep-cycle discharge for maximum life.

Abstract translation: 充电/放电装置使用恒定的充电电流和恒定的放电电流，以减少在电池单元中建立存储器的可能性。 内存会降低电池容量，并导致最终的故障，因为电池将不会收取任何费用。 充电器电路包括电流源接收电源电压以将恒定的充电电流耦合到电池，并且放大器被耦合以从电源接收参考电压和来自电池的反馈电压，以在参考电压较大时将电源电压连接到电流源 比反馈电压。 放电器电路利用电流吸收器接收电源电压来将恒定的放电电流耦合到电池。 当参考电压小于反馈电压时，放大器从电源接收参考电压和来自电池的反馈电压，以将电源电压连接到电流吸收器。 在充电器和放电器应用中，电流源或电流接收器保持与电池电压大小无关的恒定电流。 这种使用恒定电流不依赖于电池电压来对电池充电，并且能够将电池放电到低于最小工作电压的情况。 该装置特别适用于对需要特定条件的NiCad电池充电以适当地充电和深循环放电以达到最大寿命。

公开(公告)号：US20130222330A1

公开(公告)日：2013-08-29

申请号：US13408940

申请日：2012-02-29

Applicant: Lynn R. Kern ,  Srinivas K. Pulijala ,  Ken Gay

Inventor： Lynn R. Kern ,  Srinivas K. Pulijala ,  Ken Gay

IPC: G06F3/045

CPC classification number: G06F3/045 ,  G06F3/0416 ,  G06F2203/04104

Abstract: The present disclosure provides a selective data acquisition system of a matrix resistive touch panel and a method of using the data acquisition system to selectively acquire data on a touch panel. Each analog signal from the sensing track is tested with its own threshold value to determine whether the characteristics of the analyzed signal are sufficient to constitute a user's actuation on the touchscreen. If the analyzed analog signal exceeds or otherwise clears the threshold, the selective data acquisition system converts the signal into a digital word. Conversely, if the analyzed analog signal falls below or otherwise fails the threshold, the selective data acquisition system does not convert the signal. This process continues for all analog signals from the sensing tracks.

Abstract translation: 本公开提供了矩阵电阻式触摸屏的选择性数据采集系统和使用数据采集系统选择性地在触摸面板上获取数据的方法。 来自感测轨道的每个模拟信号都用其自己的阈值进行测试，以确定分析信号的特性是否足以构成用户在触摸屏上的启动。 如果分析的模拟信号超过或以其他方式清除阈值，则选择性数据采集系统将该信号转换为数字字。 相反，如果分析的模拟信号低于阈值或以其他方式失败，则选择性数据采集系统不会转换信号。 该过程对于来自感测轨道的所有模拟信号都是继续的。

公开(公告)号：US08487572B2

公开(公告)日：2013-07-16

申请号：US13246973

申请日：2011-09-28

Applicant: Lynn R. Kern ,  James P. McFarland

Inventor： Lynn R. Kern ,  James P. McFarland

IPC: H02P6/00

CPC classification number: H02P6/182

Abstract: A control method for a brushless, three-phase DC motor. The motor may include a plurality of electromagnets and a rotor. A voltage induced by rotation of a rotor may be sampled at an expected zero crossing value to produce a first sampled voltage value. An average of a plurality of sampled voltage values, including voltage values sampled at a plurality of prior expected zero crossing values, may be calculated. A delta zero crossing error may be calculated. The delta zero crossing error may be calculated based on a difference between the first sampled voltage value and the calculated average. The plurality of electromagnets may be commutated. Commutation timing for the plurality of electromagnets may be determined based at least in part on the delta zero crossing error.

Abstract translation: 一种无刷三相直流电动机的控制方法。 马达可以包括多个电磁体和转子。 可以以预期的过零值对由转子引起的电压进行采样，以产生第一采样电压值。 可以计算多个采样电压值的平均值，包括在多个先前预期过零值处采样的电压值。 可以计算Δ过零误差。 可以基于第一采样电压值和所计算的平均值之间的差来计算Δ过零误差。 多个电磁体可以被换向。 可以至少部分地基于增量零交叉误差来确定多个电磁体的换向定时。

公开(公告)号：US08368334B2

公开(公告)日：2013-02-05

申请号：US12620726

申请日：2009-11-18

Applicant: Lynn R. Kern ,  Scott C. McLeod ,  Kenneth W. Gay

Inventor： Lynn R. Kern ,  Scott C. McLeod ,  Kenneth W. Gay

IPC: H02P6/00

CPC classification number: H02P6/182 ,  F04D27/004 ,  H02P27/085

Abstract: A control method for a brushless, three-phase DC motor. A voltage induced by rotation of a rotor may be sampled at a first expected zero crossing value to produce a first sampled voltage value. An average of a plurality of sampled voltage values, including voltage values sampled at a plurality of prior expected zero crossing values and the first sampled voltage value, may be calculated. The first sampled voltage value may be subtracted from the calculated average to produce a delta zero crossing error. A pulse-width modulation duty cycle may be adjusted based on the delta zero crossing error. The pulse-width modulation duty cycle may be used to control a rotational velocity of the rotor.

Abstract translation: 一种无刷三相直流电动机的控制方法。 可以在第一预期过零值处对由转子旋转引起的电压进行采样，以产生第一采样电压值。 可以计算多个采样电压值的平均值，包括在多个先前预期过零值处采样的电压值和第一采样电压值。 可以从计算的平均值中减去第一采样电压值，以产生Δ零交叉误差。 脉冲宽度调制占空比可以根据增量零交叉误差进行调整。 脉冲宽度调制占空比可用于控制转子的旋转速度。

公开(公告)号：US08241008B2

公开(公告)日：2012-08-14

申请号：US12393571

申请日：2009-02-26

Applicant: Chao-Ming Tsai ,  Lynn R. Kern

Inventor： Chao-Ming Tsai ,  Lynn R. Kern

IPC: F04B49/10 ,  F04B49/00

CPC classification number: F04D27/00

Abstract: A control circuit for controlling the rotational speed of a fan may include a memory element to store operating data corresponding to an operational profile of the fan defined by RPM (revolutions per minute) versus temperature, with the operating data comprising a respective temperature value and a respective RPM value for each respective operating point representing a change in slope of a function that corresponds to the operational profile of the fan. A processing unit may operate to receive a present temperature value, retrieve the operating data from the storage unit, and identify a pair of consecutive operating points such that the present temperature value is greater than a lower respective temperature value of the pair of consecutive operating points, and lower than a higher respective temperature value of the pair of consecutive operating points. The processing unit may calculate a desired RPM value corresponding to the present temperature value by performing linear interpolation between the pair of consecutive operating points, and output the desired RPM value to a closed-loop fan controller configured to control a rotational speed of the fan according at least to the desired RPM value.

Abstract translation: 用于控制风扇的转速的控制电路可以包括存储元件，用于存储与由RPM（每分钟转数）相对于温度定义的风扇的操作分布相对应的操作数据，其中操作数据包括相应的温度值和 每个相应的工作点的相应的RPM值表示与风扇的操作轮廓对应的功能的斜率的变化。 处理单元可以操作以接收当前温度值，从存储单元检索操作数据，并且识别一对连续的操作点，使得当前温度值大于该对连续工作点的较低相应温度值 ，并且低于该对连续工作点的相应温度值的较高值。 处理单元可以通过在一对连续的操作点之间进行线性插值来计算与当前温度值对应的期望的RPM值，并将期望的RPM值输出到闭环风扇控制器，该闭环风扇控制器被配置为根据 至少达到所需的RPM值。

公开(公告)号：US20120049777A1

公开(公告)日：2012-03-01

申请号：US12874187

申请日：2010-09-01

Applicant: Lynn R. Kern ,  Vadim Konradi

Inventor： Lynn R. Kern ,  Vadim Konradi

IPC: H02P6/18

CPC classification number: H02P6/182 ,  H02K5/225 ,  H02K9/06 ,  H02K11/33 ,  H02P6/16

Abstract: A control method for a sensor-less, brushless, three-phase DC motor. A pulse-width modulation (PWM) duty cycle may be calculated. A voltage induced by rotation of a rotor may be sampled at a first expected zero crossing value to produce a first sampled voltage value. An average of a plurality of sampled voltage values, including voltage values sampled at a plurality of prior expected zero crossing values and the first sampled voltage value, may be calculated. The first sampled voltage value may be subtracted from the calculated average to produce a delta zero crossing error (ZCE). The current value of an integral term corresponding to a rotational period may be updated according to the sign of the ZCE. The integral term may be updated periodically and multiple times during each rotational period. The ZCE may be subtracted from the integral term, and the resulting value may be used to generate one or more time values. Operation of the motor may be controlled based on the one or more time values and the PWM duty cycle.

Abstract translation: 无传感器，无刷，三相直流电机的控制方法。 可以计算脉冲宽度调制（PWM）占空比。 可以在第一预期过零值处对由转子旋转引起的电压进行采样，以产生第一采样电压值。 可以计算多个采样电压值的平均值，包括在多个先前预期过零值处采样的电压值和第一采样电压值。 可以从所计算的平均值中减去第一采样电压值以产生增量零交叉误差（ZCE）。 可以根据ZCE的符号更新与旋转周期对应的积分项的当前值。 积分项可以在每个旋转周期期间周期性地更新多次。 可以从积分项中减去ZCE，并且可以使用所得到的值来生成一个或多个时间值。 可以基于一个或多个时间值和PWM占空比来控制电动机的操作。

公开(公告)号：US09212664B2

公开(公告)日：2015-12-15

申请号：US13549600

申请日：2012-07-16

Applicant: Chao-Ming Tsai ,  Lynn R. Kern

Inventor： Chao-Ming Tsai ,  Lynn R. Kern

IPC: F04D27/00 ,  G05B13/02

CPC classification number: F04D27/00

Abstract: A control circuit for controlling the rotational speed of a fan may include a memory element to store operating data corresponding to an operational profile of the fan defined by RPM (revolutions per minute) versus temperature, with the operating data comprising a respective temperature value and a respective RPM value for each respective operating point representing a change in slope of a function that corresponds to the operational profile of the fan. A processing unit may receive a present temperature value, retrieve the operating data from the storage unit, and identify a pair of consecutive operating points corresponding to the present temperature. The processing unit may calculate a desired RPM value corresponding to the present temperature value by performing linear interpolation between the pair of consecutive operating points, and provide the desired RPM value to a closed-loop fan controller to control the fan according to the desired RPM value.

Abstract translation: 用于控制风扇的转速的控制电路可以包括存储元件，用于存储与由RPM（每分钟转数）相对于温度定义的风扇的操作分布相对应的操作数据，其中操作数据包括相应的温度值和 每个相应的工作点的相应的RPM值表示与风扇的操作轮廓对应的功能的斜率的变化。 处理单元可以接收当前温度值，从存储单元检索操作数据，并且识别对应于当前温度的一对连续工作点。 处理单元可以通过在一对连续的操作点之间进行线性内插来计算与当前温度值对应的期望的RPM值，并且向闭环风扇控制器提供期望的RPM值以根据期望的RPM值来控制风扇 。

公开(公告)号：US08896246B2

公开(公告)日：2014-11-25

申请号：US12790161

申请日：2010-05-28

Applicant: Lynn R. Kern ,  James P. McFarland ,  Joe A. Marrero

Inventor： Lynn R. Kern ,  James P. McFarland ,  Joe A. Marrero

IPC: H02P6/04 ,  H02P6/20

CPC classification number: H02P6/20

Abstract: A motor includes a rotor and a plurality of pairs of electromagnets. The energy needed for alignment of the rotor is used to generate the first movement in forced commutation and may be combined with the initial energy to start the motor. The logic is configured to align the rotor by energizing the three coils of the motor. PWM is applied to the first coil to control current on the coils; when a maximum PWM duty cycle is reached, the coil not required to rotate the correct direction are released, thereby initiating motion in a rotor. A rotation period is determined. One or more pairs of electromagnets are excited at a first excitation level which may be increased, over a second period, to a second level. The second level may be a higher level than the first level. The rotation period may be decreased over the first and second periods.

Abstract translation: 电动机包括转子和多对电磁体。 用于对准转子所需的能量用于产生强制换向中的第一运动，并且可以与初始能量组合起动电动机。 该逻辑被配置成通过使电动机的三个线圈通电来对准转子。 PWM施加到第一线圈以控制线圈上的电流; 当达到最大PWM占空比时，不需要旋转正确方向的线圈被释放，从而启动转子中的运动。 确定旋转周期。 一对或多对电磁体在第一激发电平下被激发，第一激发电平可以在第二周期内增加到第二电平。 第二级别可能高于第一级。 旋转周期可以在第一和第二周期内减小。

公开(公告)号：US20130134913A1

公开(公告)日：2013-05-30

申请号：US13746420

申请日：2013-01-22

Applicant: Lynn R. Kern

Inventor： Lynn R. Kern

IPC: H02P6/20

CPC classification number: H02P6/205 ,  H02P6/21 ,  H02P6/24

Abstract: A system and method are presented for aligning a rotor in a motor. The motor may include the rotor and a plurality of pairs of electromagnets. One or more pairs of electromagnets may be excited at a first excitation level. The one or more pairs of electromagnets may be less than all of the plurality of pairs of electromagnets. The excitation of the one or more pairs of electromagnets may be increased to a second excitation level over a first period of time. The excitation of the one or more pairs of electromagnets may be decreased to a third excitation level over a second period of time. Exciting the one or more pairs of electromagnets, increasing the excitation, and decreasing the excitation may cause the rotor to stop in a known position.

Abstract translation: 提出了一种用于使电动机中的转子对准的系统和方法。 马达可以包括转子和多对电磁体。 可以在第一激发电平下激励一对或多对电磁体。 一对或多对电磁体可以小于多对电磁体中的全部。 一对或多对电磁体的激励可以在第一时间段内增加到第二激发电平。 一对或多对电磁体的激励可以在第二时间段内减小到第三激发电平。 激励一对或多对电磁体，增加激励和减少激励可能导致转子在已知位置停止。

公开(公告)号：US08378602B2

公开(公告)日：2013-02-19

申请号：US12620679

申请日：2009-11-18

Applicant: Lynn R. Kern

Inventor： Lynn R. Kern

IPC: H02P6/04

CPC classification number: H02P6/205 ,  H02P6/21 ,  H02P6/24

Abstract: A system and method are presented for aligning a rotor in a motor. The motor may include the rotor and a plurality of pairs of electromagnets. One or more pairs of electromagnets may be excited at a first excitation level. The one or more pairs of electromagnets may be less than all of the plurality of pairs of electromagnets. The excitation of the one or more pairs of electromagnets may be increased to a second excitation level over a first period of time. The excitation of the one or more pairs of electromagnets may be decreased to a third excitation level over a second period of time. Exciting the one or more pairs of electromagnets, increasing the excitation, and decreasing the excitation may cause the rotor to stop in a known position.

Abstract translation: 提出了一种用于使电动机中的转子对准的系统和方法。 马达可以包括转子和多对电磁体。 可以在第一激发电平下激励一对或多对电磁体。 一对或多对电磁体可以小于多对电磁体中的全部。 一对或多对电磁体的激励可以在第一时间段内增加到第二激发电平。 一对或多对电磁体的激励可以在第二时间段内减小到第三激发电平。 激励一对或多对电磁体，增加激励和减少激励可能导致转子在已知位置停止。