公开(公告)号：US06931369B1

公开(公告)日：2005-08-16

申请号：US09846681

申请日：2001-05-01

申请人： Jeffrey Robert Perry ,  Martin Garrison ,  Rex L. Allison, III ,  Richard Levin ,  Phil Gibson ,  Vandana A. Sojrani ,  Khang Nguyen ,  Wanda Carol Garrett ,  John D. Perzow

发明人： Jeffrey Robert Perry ,  Martin Garrison ,  Rex L. Allison, III ,  Richard Levin ,  Phil Gibson ,  Vandana A. Sojrani ,  Khang Nguyen ,  Wanda Carol Garrett ,  John D. Perzow

IPC分类号： G06F17/50

CPC分类号： G06F17/5036 ,  G06F2217/04 ,  G06F2217/16

摘要： A method and apparatus for thermally simulating a circuit over a network is provided. Techniques are provided for designing a circuit that satisfies user-specified functional requirements received over a network. Based on the specified requirements, components and a topology for constructing the circuit are automatically determined. The components determined during this operation have operational values such that, when the components are arranged according to the topology to form the circuit, the circuit satisfies the user-specified functional requirements. One or more web pages that identify the components are then delivered to the browser over the network. The component and topology information may be used to generate a schematic diagram that is delivered in a web page to the user over the network. The user may thermally simulate the designed circuit. Many characteristics of the board may be adjusted to provide an accurate thermal simulation. The user may place an order over the network for one of the components, a kit of all of the components, a custom made circuit made from the components, and/or a prefabricated circuit that is functionally similar to the one that was designed.

摘要翻译： 提供了一种用于通过网络热仿真电路的方法和装置。 提供了用于设计满足用户通过网络接收的功能需求的电路的技术。 根据规定的要求，自动确定组件和构造电路的拓扑结构。 在该操作期间确定的组件具有操作值，使得当组件根据拓扑结构布置以形成电路时，电路满足用户指定的功能要求。 标识组件的一个或多个网页随后通过网络传送到浏览器。 组件和拓扑信息可以用于生成通过网络在网页中向用户传送的示意图。 用户可以热仿真设计的电路。 可以调整板的许多特性以提供精确的热模拟。 用户可以通过网络为组件中的一个，所有组件的套件，由组件制成的定制电路和/或在功能上类似于设计的电路的预制电路在网络上下订单。

公开(公告)号：US06678877B1

公开(公告)日：2004-01-13

申请号：US09930883

申请日：2001-08-15

申请人： Jeffrey Robert Perry ,  Martin Garrison ,  Rex L. Allison, III ,  Richard Levin ,  Phil Gibson ,  Vandana A. Sojrani ,  Khang Nguyen ,  Wanda Carol Garrett

发明人： Jeffrey Robert Perry ,  Martin Garrison ,  Rex L. Allison, III ,  Richard Levin ,  Phil Gibson ,  Vandana A. Sojrani ,  Khang Nguyen ,  Wanda Carol Garrett

IPC分类号： G06F1750

CPC分类号： H05K3/0005 ,  G06F17/5072 ,  G06F2217/78 ,  H05K1/111

摘要： A method and apparatus for PCB layout of a circuit simulated over a network is provided. Techniques are provided for designing a circuit that satisfies user-specified functional requirements received over a network. Based on the specified requirements, components and a topology for constructing the circuit are automatically determined. The components determined during this operation have operational values such that, when the components are arranged according to the topology to form the circuit, the circuit satisfies the user-specified functional requirements. The components are placed on a PC board having landing areas designed to accommodate all of the anticipated component sizes for the type of circuit being designed. The PC board may be cropped to the desired size. The PCB may be cropped automatically or manually by the user. The component and topology information may be used to generate a schematic diagram that is delivered in a web page to the user over the network. The user may thermally and electrically simulate the designed circuit. Many characteristics of the PC board may be adjusted to produce an accurate circuit.

摘要翻译： 提供了一种通过网络模拟的电路的PCB布局的方法和装置。 提供了用于设计满足用户通过网络接收的功能需求的电路的技术。 根据规定的要求，自动确定组件和构造电路的拓扑结构。 在该操作期间确定的组件具有操作值，使得当组件根据拓扑结构布置以形成电路时，电路满足用户指定的功能要求。 组件放置在具有着陆区域的PC板上，该着陆区域被设计成适应所设计的电路类型的所有预期组件尺寸。 PC板可能被裁剪成所需的尺寸。 用户自动或手动裁剪PCB。 组件和拓扑信息可以用于生成通过网络在网页中向用户传送的示意图。 用户可以热和电模拟设计的电路。 可以调整PC板的许多特性以产生精确的电路。

公开(公告)号：US08358093B1

公开(公告)日：2013-01-22

申请号：US13134141

申请日：2011-05-31

申请人： Rex L. Allison, III

发明人： Rex L. Allison, III

IPC分类号： H02P6/18

CPC分类号： H02P6/182

摘要： A microcontroller determines the position of the rotor of a brushless, direct-current motor by determining the time of zero crossing of back electromotive force (EMF) emanating from the non-driven phase winding. The zero crossing point is determined by interpolating voltage differentials that are time stamped. Each voltage differential is the difference between the phase voltage of the phase winding and the motor neutral point voltage. The time of zero crossing is determined without using a comparator and without interrupting the processor at each zero crossing point. The processor interpolates the time of zero crossing independently of when the zero crossing point occurs. A hold signal conductor is connected both to a sample and hold circuit and to the load input lead of a time stamp register. The microcontroller simultaneously captures a phase voltage in the sample and hold circuit and a timer count in the time stamp register.

摘要翻译： 微控制器通过确定从非驱动相绕组发出的反电动势（EMF）的零交叉时间来确定无刷直流电动机的转子的位置。 通过内插时间戳的电压差来确定过零点。 每个电压差是相绕组的相电压和电机中性点电压之间的差值。 在不使用比较器的情况下确定过零时间，并且在每个过零点处不中断处理器。 该处理器独立于过零点发生时内插过零时间。 保持信号导体连接到采样保持电路和时间戳寄存器的负载输入引线。 微控制器同时捕获采样和保持电路中的相电压以及时间戳寄存器中的定时器计数。

公开(公告)号：US08030867B1

公开(公告)日：2011-10-04

申请号：US11495913

申请日：2006-07-29

申请人： Rex L. Allison, III

发明人： Rex L. Allison, III

IPC分类号： H02P6/18

CPC分类号： H02P6/182

摘要： A microcontroller determines the position of the rotor of a brushless, direct-current motor by determining the time of zero crossing of back electromotive force (EMF) emanating from the non-driven phase winding. The zero crossing point is determined by interpolating voltage differentials that are time stamped. Each voltage differential is the difference between the phase voltage of the phase winding and the motor neutral point voltage. The time of zero crossing is determined without using a comparator and without interrupting the processor at each zero crossing point. The processor interpolates the time of zero crossing independently of when the zero crossing point occurs. A hold signal conductor is connected both to a sample and hold circuit and to the load input lead of a time stamp register. The microcontroller simultaneously captures a phase voltage in the sample and hold circuit and a timer count in the time stamp register.

摘要翻译： 微控制器通过确定从非驱动相绕组发出的反电动势（EMF）的零交叉时间来确定无刷直流电动机的转子的位置。 通过内插时间戳的电压差来确定过零点。 每个电压差是相绕组的相电压和电机中性点电压之间的差值。 在不使用比较器的情况下确定过零时间，并且在每个过零点处不中断处理器。 该处理器独立于过零点发生时内插过零时间。 保持信号导体连接到采样保持电路和时间戳寄存器的负载输入引线。 微控制器同时捕获采样和保持电路中的相电压以及时间戳寄存器中的定时器计数。