公开(公告)号：US20120330464A1

公开(公告)日：2012-12-27

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：US20110115423A1

公开(公告)日：2011-05-19

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: H02P6/18

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：US20110115419A1

公开(公告)日：2011-05-19

申请号：US12620679

申请日：2009-11-18

Applicant: Lynn R. Kern

Inventor： Lynn R. Kern

IPC: H02P6/24

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：US08698432B2

公开(公告)日：2014-04-15

申请号：US12872834

申请日：2010-08-31

Applicant: Lynn R. Kern

Inventor： Lynn R. Kern

IPC: H02P6/00

CPC classification number: H02P6/182 ,  H02P7/04

Abstract: A control method for a sensor-less, brushless, three-phase DC motor. The stator coil in the electromagnets inside the motor may be used as the inductive element through which a voltage regulator can regulate the current as a means of regulating the output voltage. The value of the control signal provided to the drivers controlling power to the coils may be calculated based on at least the rail voltage, as measured in real time. This allows for a wide variation of input voltages, while maintaining a relatively constant output power to the motor. In general, by taking into account the value of the rail voltage when determining the final value of the control signal that is applied to the stator coils, the maximum current through the stator coils may be scaled to the same magnitude current that would be expected to flow through the coils if the rail voltage were the rated (nominal) fan/motor voltage, even when the actual rail voltage is different, e.g. higher than the rated fan/motor voltage.

Abstract translation: 无传感器，无刷，三相直流电机的控制方法。 电动机内的电磁铁中的定子线圈可以用作电感元件，电压调节器可以通过电感元件调节电流作为调节输出电压的手段。 可以基于至少实时测量的轨道电压来计算提供给控制线圈功率的驱动器的控制信号的值。 这允许输入电压的宽的变化，同时保持对电动机的相对恒定的输出功率。 通常，通过考虑在确定施加到定子线圈的控制信号的最终值时轨道电压的值，通过定子线圈的最大电流可以被缩放到与预期相同的幅度电流 如果轨道电压是额定（标称）风扇/电机电压，即使实际轨道电压不同，也可以流过线圈，例如 高于额定风扇/电机电压。

公开(公告)号：US08633662B2

公开(公告)日：2014-01-21

申请号：US12632495

申请日：2009-12-07

Applicant: Lynn R. Kern ,  James P. McFarland

Inventor： Lynn R. Kern ,  James P. McFarland

IPC: H03K5/00

CPC classification number: H02P6/14 ,  H02P2209/07

Abstract: A control method for a sensor-less, brushless, three-phase DC motor. The effects of commutation on the motor may be minimized using a sinusoidal current drive on each electromagnet. The “off” times and/or the “on” times of the drive transistors controlling the electromagnets in a full “H-bridge” configuration drive scheme may be delayed. By overlapping the drive signals to the electromagnets with respect to a commutation command, the effects of switching between electromagnets may be minimized. In addition, the “on” and “off” times may also be adjusted during the overlapping to further ensure that the coils continuously conduct current, and that the current does not change direction during the switching. The delays, and hence the overlap times of the coil drive signals may be dynamically controlled, for example by using digital timers, making the response predictable and easily controlled. The present position of the rotor in the motor may be determined using Hall sensors configured in the motor, or it may be determined using the un-energized electromagnets in a motor without Hall sensors.

Abstract translation: 无传感器，无刷，三相直流电机的控制方法。 可以使用每个电磁体上的正弦电流驱动来最小化电机上的换向效应。 在完全“H桥”配置驱动方案中控制电磁体的驱动晶体管的“关”时间和/或“开”时间可能会延迟。 通过将驱动信号相对于换向指令重叠到电磁体，可以使电磁铁之间切换的效果最小化。 此外，还可以在重叠期间调整“开”和“关”次，以进一步确保线圈连续导通电流，并且电流在切换期间不改变方向。 可以例如通过使用数字定时器来动态地控制线圈驱动信号的延迟，并因此线圈驱动信号的重叠时间，从而使响应可预测并且易于控制。 电动机中的转子的当前位置可以使用配置在电动机中的霍尔传感器来确定，或者可以使用没有霍尔传感器的电动机中的未通电的电磁体来确定。

公开(公告)号：US08436564B2

公开(公告)日：2013-05-07

申请号：US12874187

申请日：2010-09-01

Applicant: Lynn R. Kern ,  Vadim Konradi

Inventor： Lynn R. Kern ,  Vadim Konradi

IPC: H02K29/06

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：US20130057510A1

公开(公告)日：2013-03-07

申请号：US13605799

申请日：2012-09-06

Applicant: Lynn R. Kern

Inventor： Lynn R. Kern

IPC: G06F3/045

CPC classification number: G06F3/045 ,  G06F3/0416

Abstract: A resistive sensing touch panel may include row receiver tracks and column drive tracks. A controller may send and receive control signals and sense signals, respectively, to and from the resistive touch panel. The resistive touch panel may provide sense signals when a touch of the panel is detected. The sense signals may be sampled on a number of rows. When sampling a given row, the controller may change the termination of that row by coupling the end of the sampled row to a resistor having a higher value then terminating resistors coupled to the end of non-sampled rows that are adjacent to the sampled row. The controller may further pull the terminating resistors coupled to the end of the non-sampled adjacent rows to a supply rail voltage while the sampled row is being sampled.

Abstract translation: 电阻感测触摸面板可以包括行接收器轨道和列驱动轨道。 控制器可以分别发送和接收控制信号并且感测来自电阻式触摸面板的信号。 当检测到面板的触摸时，电阻式触摸面板可以提供感测信号。 感测信号可以在多行上采样。 当给定行进行采样时，控制器可以通过将采样行的末端耦合到具有较高值的​​电阻器来改变该行的终止，然后终止电阻器耦合到与采样行相邻的非采样行的末端。 当采样的行被采样时，控制器可以进一步将耦合到未采样的相邻行的端部的终端电阻拉到电源轨电压。

公开(公告)号：US08237599B2

公开(公告)日：2012-08-07

申请号：US12627734

申请日：2009-11-30

Applicant: Joe A. Marrero ,  Lynn R. Kern ,  Scott C. McLeod

Inventor： Joe A. Marrero ,  Lynn R. Kern ,  Scott C. McLeod

IPC: H03M1/56

CPC classification number: H03K7/08 ,  H03M1/56

Abstract: System and method for digitizing analog voltage signals. A first voltage signal may be received at a comparator. A ramp signal may be received at the comparator. The ramp signal may be generated by a ramp generator. An output signal may be generated by the comparator. The output signal may indicate whether the analog voltage signal or the ramp signal is greater. The output signal may be conveyed to logic circuitry by the comparator. Control information may be conveyed by the logic circuitry to the ramp generator. The ramp generator may generate the ramp signal based on the control information. The logic circuitry may determine a digital representation of the first voltage signal based on the output signal from the comparator and the control information.

Abstract translation: 数字化模拟电压信号的系统和方法。 可以在比较器处接收第一电压信号。 可以在比较器处接收斜坡信号。 斜坡信号可以由斜坡发生器产生。 输出信号可以由比较器产生。 输出信号可以指示模拟电压信号或斜坡信号是否较大。 输出信号可以由比较器传送到逻辑电路。 控制信息可以由逻辑电路传送到斜坡发生器。 斜坡发生器可以基于控制信息产生斜坡信号。 逻辑电路可以基于来自比较器的输出信号和控制信息来确定第一电压信号的数字表示。

公开(公告)号：US20120013280A1

公开(公告)日：2012-01-19

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: H02P6/18

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：US08054033B2

公开(公告)日：2011-11-08

申请号：US12393996

申请日：2009-02-26

Applicant: Lynn R. Kern ,  James P. McFarland

Inventor： Lynn R. Kern ,  James P. McFarland

IPC: H02P23/00

CPC classification number: H02P6/182

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. The delta zero crossing error may be multiplied by a first constant representing electromechanical properties of the motor to produce a representation of an angular velocity. One or more time values may be generated based on the representation of the angular velocity. 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。 Δ过零误差可以乘以表示电机的机电特性的第一常数以产生角速度的表示。 可以基于角速度的表示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。