公开(公告)号：US20070114959A1

公开(公告)日：2007-05-24

申请号：US11284419

申请日：2005-11-21

申请人： Jaime Echazarreta

发明人： Jaime Echazarreta

IPC分类号： H02P7/00

CPC分类号： H02P7/04

摘要： A method and apparatus for controlling the speed of a DC electric motor receives a periodic commutation signal having a fixed duration on cycle and an off cycle. The commutation signal then is modified to form a periodic modified commutation signal having substantially the same period duration as the commutation signal. The modified commutation signal has a single on cycle per period. The method and apparatus then determine a desired speed of the motor, and vary the duration of the on cycle of the commutation signal to form the on cycle of the modified commutation signal. The on cycle of the modified commutation signal has a duration that is less than the fixed duration. By varying in this manner, the rotor rotates at substantially the desired speed.

摘要翻译： 用于控制直流电动机的速度的方法和装置接收周期和断开周期具有固定持续时间的周期性换向信号。 然后，换向信号被修改以形成具有与换向信号基本相同的周期持续时间的周期性修改的换向信号。 修改的换向信号具有每个周期的单个开启周期。 该方法和装置然后确定电动机的期望速度，并且改变换向信号的导通周期的持续时间以形成修正的换向信号的导通周期。 修改的换向信号的导通周期具有小于固定持续时间的持续时间。 通过以这种方式变化，转子基本上以所需的速度旋转。

公开(公告)号：US07245096B2

公开(公告)日：2007-07-17

申请号：US11284419

申请日：2005-11-21

申请人： Jaime Echazarreta

发明人： Jaime Echazarreta

IPC分类号： H02P1/00

CPC分类号： H02P7/04

摘要： A method and apparatus for controlling the speed of a DC electric motor receives a periodic commutation signal having a fixed duration on cycle and an off cycle. The commutation signal then is modified to form a periodic modified commutation signal having substantially the same period duration as the commutation signal. The modified commutation signal has a single on cycle per period. The method and apparatus then determine a desired speed of the motor, and vary the duration of the on cycle of the commutation signal to form the on cycle of the modified commutation signal. The on cycle of the modified commutation signal has a duration that is less than the fixed duration. By varying in this manner, the rotor rotates at substantially the desired speed.

摘要翻译： 用于控制直流电动机的速度的方法和装置接收周期和断开周期具有固定持续时间的周期性换向信号。 然后，换向信号被修改以形成具有与换向信号基本相同的周期持续时间的周期性修改的换向信号。 修改的换向信号具有每个周期的单个开启周期。 该方法和装置然后确定电动机的期望速度，并且改变换向信号的导通周期的持续时间以形成修正的换向信号的导通周期。 修改的换向信号的导通周期具有小于固定持续时间的持续时间。 通过以这种方式变化，转子基本上以所需的速度旋转。

公开(公告)号：US20080124234A1

公开(公告)日：2008-05-29

申请号：US11592030

申请日：2006-11-02

申请人： Jaime Echazarreta

发明人： Jaime Echazarreta

IPC分类号： F04D29/54 ,  H05K7/20

CPC分类号： F04D29/541 ,  F04D25/08 ,  H05K7/20581

摘要： A fan trays assembly is made of one or small number of cast or injection molded (collectively “cast”) components. Each component can be cast of plastic, metal or another material. One of the components of the fan tray includes a front wall, a back wall, two side walls, an inner wall defining a Venturi and a motor housing suspended within the Venturi by one or more structural members. The walls, the motor housing and the structural member(s) are all formed as a single casting. Casting these pieces together reduces the complexity and cost of manufacturing the fan trays. Multi-fan fan trays and modular fan trays can be similarly made.

摘要翻译： 风扇托盘组件由一个或少量的铸造或注塑（统称为“铸造”）部件制成。 每个组件都可以铸塑料，金属或其他材料。 风扇盘的一个部件包括前壁，后壁，两个侧壁，限定文丘里管的内壁和通过一个或多个结构构件悬挂在文丘里内的马达壳体。 墙壁，电机壳体和结构构件都形成为单个铸件。 将这些零件一起铸造减少制造风扇盘的复杂性和成本。 多风扇风扇盘和模块化风扇盘可以类似地制成。