公开(公告)号：US07573220B2

公开(公告)日：2009-08-11

申请号：US11715130

申请日：2007-03-06

申请人： Eric A. Hardt ,  Scott Frankel

发明人： Eric A. Hardt ,  Scott Frankel

IPC分类号： H02P1/04

CPC分类号： H05K7/20836 ,  F04D27/004

摘要： A self-calibrating, continuous variable speed fan for use in cooling electronic circuitry is disclosed. Upon initial power-up, in an environment of known temperature, the self-calibrating fan accommodates for the tolerances of its electronic components by reading a voltage from its thermistor array and comparing the actual value to an expected value for the given temperature. The difference is then stored in the non-volatile memory of a microcontroller for use in adjusting future voltage readings from the thermistor array. During normal operation, adjusted readings from the thermistor array are then converted by the microcontroller into a control signal for driving the motor of a cooling fan. A quickly cycling stochastic process between adjustments to fan motor speed and temperature readings is then established, thereby maintaining a high degree of control over the device to be cooled.

摘要翻译： 公开了一种用于冷却电子电路的自校准连续变速风扇。 在初始上电时，在已知温度的环境中，自校准风扇通过从其热敏电阻阵列读取电压并将实际值与给定温度的期望值进行比较来适应其电子元件的公差。 然后将差值存储在微控制器的非易失性存储器中，以用于调整来自热敏电阻阵列的未来电压读数。 在正常操作期间，来自热敏电阻阵列的调节读数然后由微控制器转换成用于驱动冷却风扇电机的控制信号。 然后建立对风扇电机转速和温度读数的调整之间的快速循环随机过程，从而保持对待冷却装置的高度控制。

公开(公告)号：US07902777B2

公开(公告)日：2011-03-08

申请号：US12061526

申请日：2008-04-02

申请人： Jerome Pierre ,  Nigel Strike ,  Eric A. Hardt

发明人： Jerome Pierre ,  Nigel Strike ,  Eric A. Hardt

IPC分类号： H02H7/08

CPC分类号： H02H7/093 ,  H02H7/0816

摘要： Method and system for motor oscillatory state detection. According to various embodiments, the present invention presents a method for determining whether a motor is in an oscillatory state. The method includes powering up a motor for a period of time and then monitoring the movement of the motor during a period after the power if turned off. Based on the movement of the motor and/or impeller during a time period after the power is turned off, whether the motor is in an oscillatory state is determined. The method also includes initiating a process for handle error if the motor is in the oscillation state.

摘要翻译： 电机振荡状态检测方法与系统。 根据各种实施例，本发明提供一种用于确定电动机是否处于振荡状态的方法。 该方法包括将电机上电一段时间，然后在电源关闭后的一段时间内监控电机的运动。 基于在电源关闭之后的时间段期间电动机和/或叶轮的运动，确定电动机是否处于振荡状态。 该方法还包括如果电动机处于振荡状态则启动处理错误的过程。

公开(公告)号：US20090251085A1

公开(公告)日：2009-10-08

申请号：US12061526

申请日：2008-04-02

申请人： Jerome Pierre ,  Nigel Strike ,  Eric A. Hardt

发明人： Jerome Pierre ,  Nigel Strike ,  Eric A. Hardt

IPC分类号： H02H7/08

CPC分类号： H02H7/093 ,  H02H7/0816

摘要： Method and system for motor oscillatory state detection. According to various embodiments, the present invention presents a method for determining whether a motor is in an oscillatory state. The method includes powering up a motor for a period of time and then monitoring the movement of the motor during a period after the power if turned off. Based on the movement of the motor and/or impeller during a time period after the power is turned off, whether the motor is in an oscillatory state is determined. The method also includes initiating a process for handle error if the motor is in the oscillation state.

摘要翻译： 电机振荡状态检测方法与系统。 根据各种实施例，本发明提供一种用于确定电动机是否处于振荡状态的方法。 该方法包括将电机上电一段时间，然后在电源关闭后的一段时间内监控电机的运动。 基于在电源关闭之后的时间段期间电动机和/或叶轮的运动，确定电动机是否处于振荡状态。 该方法还包括如果电动机处于振荡状态则启动处理错误的过程。

公开(公告)号：US06611117B1

公开(公告)日：2003-08-26

申请号：US09556717

申请日：2000-04-21

申请人： Eric A. Hardt

发明人： Eric A. Hardt

IPC分类号： H52P700

CPC分类号： H02P6/16 ,  H02P6/12 ,  H02P6/20 ,  H02P29/032 ,  Y10S388/904

摘要： A drive circuit for a brushless DC motor controls at least one of a number of possible operation features of the motor. The drive circuit includes a driver stage for providing a current for a stator coil and varies which of the number of possible operation features of the motor are controlled. The operation features of the motor include inrush current limit control, PWM speed control, analog speed control, detecting a locked rotor condition, setting an alarm following detection of the locked rotor condition, restarting the motor following the locked rotor condition, detecting a low speed condition, and setting an alarm following detection of the low speed condition. Some of the operation features of the motor utilize at least one parameter that defines the desired operation of the feature. The drive circuit further varies the parameters of the operation features without changing the physical configuration of the brushless DC motor.

摘要翻译： 用于无刷直流电动机的驱动电路控制电动机的许多可能的操作特征中的至少一个。 驱动电路包括用于为定子线圈提供电流并改变控制电动机的可能操作特征数量的驱动级。 电动机的运行特性包括浪涌电流限制控制，PWM速度控制，模拟速度控制，检测转子转子状态，检测到转子转子状态后设置报警，在转子转动状态下重启电机，检测低速 条件，并在检测到低速条件后设置报警。 电动机的一些操作特征使用至少一个限定特征的期望操作的参数。 驱动电路进一步改变操作特征的参数，而不改变无刷直流电动机的物理结构。