公开(公告)号：US20120306465A1

公开(公告)日：2012-12-06

申请号：US13471604

申请日：2012-05-15

申请人： Shinichiro SUGA ,  Kenta IDO ,  Tomohiro SUZUKI ,  Hiroaki SUMIYA ,  Katsuyuki YASUKOUCHI ,  Takahiro YOSHINO

发明人： Shinichiro SUGA ,  Kenta IDO ,  Tomohiro SUZUKI ,  Hiroaki SUMIYA ,  Katsuyuki YASUKOUCHI ,  Takahiro YOSHINO

IPC分类号： G05F1/46

CPC分类号： H02M3/158 ,  H02M3/156 ,  H02M2001/0025

摘要： A power supply device that includes a switch circuit to which an input voltage is supplied, a coil coupled between the switch circuit and an output terminal from which an output voltage is outputted. A voltage adding circuit adds a slope voltage to a reference voltage. A control unit compares a feedback voltage corresponding to the output voltage and the reference voltage and switches the switch circuit at a timing corresponding to a comparison result of the feedback voltage and the reference voltage. A slope adjustment circuit differentiates a current flowing in the coil and adjusts a slope amount of the slope based on a differentiation result of the current.

摘要翻译： 一种电源装置，包括提供输入电压的开关电路，耦合在开关电路和输出端之间的线圈，输出端从输出端输出。 电压加法电路将斜率电压加到基准电压上。 控制单元将对应于输出电压的反馈电压和参考电压进行比较，并在与反馈电压和参考电压的比较结果相对应的定时切换开关电路。 斜率调整电路对流过线圈的电流进行微分，并根据电流的微分结果调整斜率的斜率。

公开(公告)号：US20080167789A1

公开(公告)日：2008-07-10

申请号：US11961699

申请日：2007-12-20

申请人： Naoki OKAMOTO ,  Masahiro ARAI ,  Hatsuo NAGAISHI ,  Takahiro YOSHINO ,  Yuko NAGAISHI

发明人： Naoki OKAMOTO ,  Masahiro ARAI ,  Hatsuo NAGAISHI ,  Takahiro YOSHINO ,  Yuko NAGAISHI

IPC分类号： F02D41/00

CPC分类号： F01L13/0026 ,  F01L1/047 ,  F01L1/3442 ,  F01L2013/0073 ,  F01L2800/09

摘要： In a variable valve unit provided with a variable valve mechanism that varies opening characteristics of an engine valve by rotary motion of a control shaft, an actuator that generates a rotary motion of the control shaft, a stopper restricting the rotary motion of the control shaft, and an angle sensor capable of outputting signals corresponding to angle positions of the control shaft, when the signal of the angle sensor at an angle position where the rotation of the control shaft is restricted by the stopper are learned, the actuator is controlled such that the control shaft is pressed against the stopper, after which drive torque of the actuator is reduced and with the drive torque reduced, signals of the then-angle sensor are stored.

摘要翻译： 在具有通过控制轴的旋转运动来改变发动机气门的开启特性的可变阀机构的可变阀装置中，产生控制轴的旋转运动的致动器，限制控制轴的旋转运动的止动件， 以及角度传感器，其能够输出对应于控制轴的角度位置的信号，当角度传感器在控制轴的旋转被止动器限制的角度位置处的信号被学习时，致动器被控制成使得 控制轴被按压在制动器上，此后致动器的驱动转矩减小，随着驱动转矩的降低，存储了角度传感器的信号。