公开(公告)号：US09428062B2

公开(公告)日：2016-08-30

申请号：US14533877

申请日：2014-11-05

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Ray M. Ransom

IPC: H02P1/30 ,  B60L11/00 ,  H03K3/017 ,  H03K5/156 ,  H02M1/15 ,  H02M7/5395

CPC classification number: B60L11/00 ,  H02M1/15 ,  H02M7/5395 ,  H03K3/017 ,  H03K5/1565

Abstract: A method and system are provided for updating a duty cycle for a power converter. The system and method operate the power converter to compute a first duty cycle during a first pulse-width modulation period and updating a second duty cycle for a second pulse-width modulation period at the completion of the first pulse-width modulation period. Next a third duty cycle for a third previous pulse-width modulation period is updated at the completion of the first pulse-width modulation period.

Abstract translation: 提供了一种用于更新功率转换器的占空比的方法和系统。 所述系统和方法操作所述功率转换器以在第一脉冲宽度调制周期期间计算第一占空比，并且在所述第一脉冲宽度调制周期完成时更新第二脉冲宽度调制周期的第二占空比。 接下来，在第一脉冲宽度调制周期完成时更新第三个前一个脉冲宽度调制周期的第三个占空比。

公开(公告)号：US08775003B2

公开(公告)日：2014-07-08

申请号：US13687748

申请日：2012-11-28

Applicant: GM Global Technology Operations LLC

Inventor： Seok-Joo Jang ,  Lihua Li ,  Ray M. Ransom

IPC: B60L9/00

CPC classification number: G05B11/01 ,  B60L11/1887 ,  B60L2210/14 ,  B60L2240/527 ,  B60L2240/529 ,  B60L2260/42 ,  Y02T10/7225 ,  Y02T90/34

Abstract: Methods and apparatus are provided for controlling a boost converter. In one embodiment, the method processes a command signal in a slew rate limiting circuit. The output of the slew rate limiting circuit is then processed using one or more feedback parameters from the proportional integrator to provide a processed command signal. The processed command signal is processed with a controlled signal to provide an error signal which is provided to the proportional integrator to provide a current command signal. In one embodiment, the apparatus includes an error generating circuit configured to provide a processed command signal using one or more feedback parameters from the proportional integrator, and to provide the error signal by subtracting a signal to be controlled from the processed command signal. A slew rate limiting circuit is used to receive a command signal and provide an output to the error generating circuit.

Abstract translation: 提供了用于控制升压转换器的方法和装置。 在一个实施例中，该方法在转换速率限制电路中处理命令信号。 然后使用来自比例积分器的一个或多个反馈参数来处理转换速率限制电路的输出以提供处理的命令信号。 处理的命令信号用受控信号进行处理，以提供提供给比例积分器的误差信号以提供电流指令信号。 在一个实施例中，该装置包括错误产生电路，该错误产生电路被配置为使用来自比例积分器的一个或多个反馈参数提供处理的命令信号，并且通过从所处理的命令信号中减去要被控制的信号来提供误差信号。 使用转换速率限制电路来接收命令信号并向误差产生电路提供输出。

公开(公告)号：US08937447B2

公开(公告)日：2015-01-20

申请号：US13687767

申请日：2012-11-28

Applicant: GM Global Technology Operations LLC

Inventor： Lihua Li ,  Seok-Joo Jang ,  Ray M. Ransom

IPC: H02P29/02 ,  G05F1/46 ,  G05F5/00

CPC classification number: H02P29/028 ,  B60L3/0053 ,  B60L11/1881 ,  B60L2210/14 ,  B60L2220/10 ,  B60L2240/429 ,  G05F1/46 ,  G05F5/00 ,  H02M3/156 ,  H02P29/032 ,  Y02T10/642 ,  Y02T10/7225 ,  Y02T90/34

Abstract: Methods and apparatus are provided for controlling a boost converter. In one embodiment, the method includes processing an input current command through a plurality of prioritized limiting circuits to determine whether to limit the input current command and limiting the input current command to limit the boost converter when it is determined to limit the input current command. In one embodiment, the apparatus includes an energy source coupled to a boost converter that provides an output voltage responsive to a current command signal. An inverter is coupled to the boost converter to provide multiple phased currents to a multi-phase motor for a vehicle. A controller coupled to the boost converter for providing the current command signal by processing an input current command through a plurality of prioritized limiting circuits and determining whether to limit the input current command to provide the current command signal to the boost converter.

Abstract translation: 提供了用于控制升压转换器的方法和装置。 在一个实施例中，该方法包括通过多个优先级限制电路来处理输入电流指令，以确定是否限制输入电流指令，并且当确定限制输入电流指令时限制输入电流指令以限制升压转换器。 在一个实施例中，该装置包括耦合到升压转换器的能量源，其提供响应于当前命令信号的输出电压。 逆变器耦合到升压转换器以向车辆的多相电动机提供多个相控电流。 控制器，耦合到升压转换器，用于通过经由多个优先化限制电路处理输入电流指令来提供电流指令信号，并且确定是否限制输入电流指令以向升压转换器提供电流指令信号。

公开(公告)号：US20140298074A1

公开(公告)日：2014-10-02

申请号：US13853106

申请日：2013-03-29

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Terry Murrell ,  Ray M. Ransom ,  Namal P. Kumara

IPC: G06F1/04

CPC classification number: G06F11/3024 ,  G06F11/3409 ,  G06F2201/88

Abstract: A method of determining processor utilization includes: counting, via a first counter on a processor, a number of elapsed clock cycles while code is being executed; counting, via a second counter on a processor, a total number of free-running clock cycles; and dividing the number of clock cycles where code is being executed by the total number of free-running clock cycles to determine a CPU utilization.

Abstract translation: 一种确定处理器利用率的方法包括：经由处理器上的第一计数器对代码执行时经过的时钟周期数进行计数; 通过处理器上的第二计数器对自由运行的时钟周期的总数进行计数; 并将执行代码的时钟周期数除以自由运行时钟周期的总数，以确定CPU利用率。

公开(公告)号：US20150178047A1

公开(公告)日：2015-06-25

申请号：US14140026

申请日：2013-12-24

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Ray M. Ransom

IPC: G06F7/548

CPC classification number: G06F7/548 ,  G06F1/0353 ,  G06F2101/04 ,  G06F2207/544

Abstract: A method of calculating an arctangent includes coding a sign for a y-value an x-value into a 3-bit index. When the absolute value of the x-value is greater than the absolute value of the y-value, the absolute values of the x-value and the y-value are swapped, and a swap bit of the index is coded to indicate that the x-value and the y-value were swapped. The arctangent is calculated from the quotient of the swapped x-value divided by the swapped y-value. A segment base angle is extracted from a table, based on the coded x-bit, y-bit, and swap bit of the index. An encoded sign is extracted from the segment base angle and is applied to the calculated arctangent output value to define a corrected arctangent value. The segment base angle is added to the corrected arctangent value to define the arctangent of the point.

Abstract translation: 计算反正切的方法包括将y值的符号编码为3比特索引的x值。 当x值的绝对值大于y值的绝对值时，将交换x值和y值的绝对值，并对该索引的交换位进行编码，以指示 x值和y值被交换。 反正切是根据交换的x值除以交换的y值的商计算的。 基于索引的编码的x位，y位和交换位，从表中提取段基角。 从段基角提取编码符号，并将其应用于计算的反正切输出值，以定义校正反正切值。 将段基角加到校正反正切值中以定义点的反正切。