公开(公告)号：US20210041508A1

公开(公告)日：2021-02-11

申请号：US17079653

申请日：2020-10-26

Applicant: DENSO CORPORATION

Inventor： Hirokazu SADAMATSU ,  Shinichiro NAKATA ,  Makoto OISHI

IPC: G01R31/52 ,  H03F3/45 ,  H03M1/64

Abstract: A resolver signal processing circuit for amplifying two phase signals output from a resolver includes first and second amplifier circuits configured to adjust an input in-phase voltage range to output an intended voltage even when a short-circuit arises in the resolver. The resolver signal processing circuit further includes first and second short-circuit detection circuits configured to detect the short-circuit arising in the resolver and short-circuits in first and second signal input paths from the resolver to the first and the second amplifier circuits, respectively, and first and second voltage adjusting units configured to adjust input in-phase voltage ranges of the first and second amplifier circuits when the first and second short-circuit detection circuits detect short-circuits, respectively. The first and second amplifier circuits are configured to adjust the input in-phase voltage ranges, respectively.

公开(公告)号：US20160349306A1

公开(公告)日：2016-12-01

申请号：US15078004

申请日：2016-03-23

Applicant: DENSO CORPORATION

Inventor： Hirokazu SADAMATSU

IPC: G01R31/04 ,  G01D5/14

CPC classification number: G01D5/14 ,  G01D3/08 ,  G01D5/2013 ,  G01R31/007 ,  G01R31/024 ,  G01R31/2829

Abstract: A power supply control part supplies offset voltages from power supplies to each of signal wires at start time and then, after a predetermined delay time period, supplies a reference voltage from a power supply. A series resistor circuit of resistor elements is provided in each signal wire and a resistor element is connected between a supply node of the offset voltage and an input terminal of the series resistor circuit. A resistor element is connected between the supply node of reference voltage and the output terminal of the series resistor circuit provided in the signal wire of a high-potential side. A comparison logic part detects a disconnection of the signal wire based on a voltage developed at the input terminal of itself during the delay time.

Abstract translation: 电源控制部分在起始时间向每个信号线提供电源的补偿电压，然后在预定的延迟时间段之后，从电源提供参考电压。 电阻元件串联电阻电路设置在各信号线中，电阻元件连接在偏置电压的电源节点和串联电阻电路的输入端子之间。 一个电阻元件连接在参考电压的电源节点和设置在高电位侧的信号线中的串联电阻电路的输出端之间。 比较逻辑部分基于在延迟时间期间在其自身的输入端产生的电压来检测信号线的断开。