公开(公告)号：US20170363444A1

公开(公告)日：2017-12-21

申请号：US15544612

申请日：2016-01-13

Applicant: DENSO CORPORATION

Inventor： Takuya KAWAMURA ,  Hirofumi KINJOU ,  Toru WAKIMOTO ,  Hideaki NAKAYAMA ,  Masataka YOSHIMURA

IPC: G01D5/14

CPC classification number: G01D5/14 ,  G01D5/145 ,  G01D5/24485

Abstract: A rotation angle detection apparatus includes a magnet that is provided to a rotating shaft of a rotating body and rotates with the rotating shaft to generate magnetic flux and a magnetic sensor that is provided at a distance from the magnet and detects a magnetic flux interlinked with the magnetic sensor. The rotation angle detection apparatus has a magnet magnetic flux detection circuit that detects a magnet magnetic flux generated from the magnet, a disturbance magnetic flux detection circuit that detects a disturbance magnetic flux, which is a magnetic flux other than the magnet magnetic flux and is interlinked with the magnetic sensor, and a correction circuit that corrects a result of detection of the magnetic sensor based on a result of detection of the magnet magnetic flux detection circuit and a result of detection of the disturbance magnetic flux detection circuit.

公开(公告)号：US20130336014A1

公开(公告)日：2013-12-19

申请号：US13845963

申请日：2013-03-18

Applicant: DENSO CORPORATION

Inventor： Hirofumi KINJOU ,  Keiji SHIGEOKA ,  Yuji HAYASHI ,  Kenji TOMITA ,  Kimikazu NAKAMURA

IPC: H02M3/335

CPC classification number: H02M3/33507 ,  H02M3/3376 ,  H02M7/53871

Abstract: A DC-DC converter generates PWM signals PWM1H, PWM1L on the basis of a reference signal CLK1 to drive switching elements connected in series. When generating a reset signal RST, the converter generates PWM signals PWM2H, PWM2L on the basis of the reset signal RST. When generating no reset signal, the converter generates the PWM signals PWM2H, PWM2L on the basis of a reference signal CLK2 in order to drive other switching elements connected in series. The converter generates the reset signal RST at an optional timing to the reference signal CLK1. The reference signal CLK2 is brought forward from the reference signal CLK1 by ΔT1. The PWM signals PWM1H, PWM1L are different in timing from the PWM signals PWM2H, PWM2L. This makes it possible to avoid the switching elements diagonally arranged from being simultaneously turned on and off, and suppress a switching loss, and to increase an efficiency of the converter.

Abstract translation: DC-DC转换器基于参考信号CLK1产生PWM信号PWM1H，PWM1L，以驱动串联连接的开关元件。 当产生复位信号RST时，转换器基于复位信号RST产生PWM信号PWM2H，PWM2L。 当不产生复位信号时，转换器基于参考信号CLK2产​​生PWM信号PWM2H，PWM2L，以驱动串联连接的其它开关元件。 转换器在参考信号CLK1的可选定时产生复位信号RST。 参考信号CLK2从参考信号CLK1提前DeltaT1。 PWM1H，PWM1L的PWM信号与PWM2H，PWM2L的PWM信号的时序不同。 这使得可以避免对角线布置的同时导通和截止的开关元件，并且抑制开关损耗，并且提高转换器的效率。

公开(公告)号：US20160265942A1

公开(公告)日：2016-09-15

申请号：US15061297

申请日：2016-03-04

Applicant: DENSO CORPORATION

Inventor： Takuya KAWAMURA ,  Hirofumi KINJOU ,  Toru WAKIMOTO ,  Hideaki NAKAYAMA ,  Masataka YOSHIMURA

IPC: G01D5/20

CPC classification number: G01D5/145 ,  G01D3/0365 ,  G01D5/24485

Abstract: A correction circuit stores data for obtaining coefficients of a relational expression indicating a relationship between a disturbance magnetic flux and a rotational angle error. Then, the coefficients are obtained from the data for obtaining the coefficients, and a detection result of a magnetic sensor is corrected based on the coefficients obtained, a relational expression, and a detection result of a disturbance magnetic flux detection circuit. Since it is possible to obtain the rotational angle error with respect to the disturbance magnetic flux from the coefficient obtained and the relational expression, it is not necessary to store the data indicating the relationship between the disturbance magnetic flux and the rotational angle error for all of the disturbance magnetic flux value in disturbance magnetic flux regions that may be applied.

Abstract translation: 校正电路存储用于获得表示干扰磁通和旋转角误差之间的关系的关系式的系数的数据。 然后，从用于获得系数的数据中获得系数，并且基于获得的系数，关系表达式和干扰磁通检测电路的检测结果来校正磁传感器的检测结果。 由于可以从获得的系数和关系式获得相对于干扰磁通量的旋转角误差，因此不需要存储表示干扰磁通和旋转角度误差之间的关系的数据 干扰磁通区域中的扰动磁通值可能被应用。

公开(公告)号：US20140062558A1

公开(公告)日：2014-03-06

申请号：US14015480

申请日：2013-08-30

Applicant: DENSO CORPORATION

Inventor： Hirofumi KINJOU ,  Yuji HAYASHI ,  Keiji SHIGEOKA ,  Kimikazu NAKAMURA

IPC: H03K5/12

CPC classification number: H03K5/12

Abstract: A current mode controlled power converter controllable in a digitally processing current mode even during an on time. In the power converter, each control period based on a reference signal includes a slope calculation period in which a slope compensation signal for the control period is calculated by a slope compensation unit. During each slope calculation period, the slope compensation unit negates the slope compensation signal calculated previous to the control period including the slope calculation period, and a reset signal generation unit compares a current detection signal detected by a current detection unit with a current instruction set to an error signal generated by an error signal generation unit to generate a reset signal.

Abstract translation: 电流模式控制功率转换器，即使在接通时间也可以数字处理电流模式控制。 在功率转换器中，基于参考信号的每个控制周期包括斜率计算周期，其中通过斜率补偿单元计算用于控制周期的斜率补偿信号。 在每个斜率计算周期期间，斜率补偿单元否定在包括斜率计算周期的控制周期之前计算的斜率补偿信号，并且复位信号生成单元将由电流检测单元检测的电流检测信号与当前指令集相比较 由误差信号产生单元产生的产生复位信号的误差信号。