公开(公告)号：US08085174B2

公开(公告)日：2011-12-27

申请号：US12801291

申请日：2010-06-02

申请人： Tsung-Heng Tsai ,  Jen-Hung Chi

发明人： Tsung-Heng Tsai ,  Jen-Hung Chi

IPC分类号： H03M1/06

CPC分类号： H03M1/06 ,  H03M1/66

摘要： A current-mode DAC includes at least one to-be-corrected one current source, a referential current source, a current comparator for comparing the current of the to-be-corrected current source and the current of the referential current source, a correction controller, a successive approximation register controller controlled by the correction controller and referring to the result of the comparison for carrying out successive approximation, and at least one correction DAC electrically connected with the successive approximation register controller and the to-be-corrected current source for referring to the result acquired from the successive approximation register controller and then providing a bias for the to-be-corrected current source for carrying out current correction. Accordingly, the corrected current can have the excellent accuracy.

公开(公告)号：US20110187568A1

公开(公告)日：2011-08-04

申请号：US12801291

申请日：2010-06-02

申请人： Tsung-Heng Tsai ,  Jen-Hung Chi

发明人： Tsung-Heng Tsai ,  Jen-Hung Chi

IPC分类号： H03M1/06 ,  H03M1/66

CPC分类号： H03M1/06 ,  H03M1/66

摘要： A current-mode DAC includes at least one to-be-corrected one current source, a referential current source, a current comparator for comparing the current of the to-be-corrected current source and the current of the referential current source, a correction controller, a successive approximation register controller controlled by the correction controller and referring to the result of the comparison for carrying out successive approximation, and at least one correction DAC electrically connected with the successive approximation register controller and the to-be-corrected current source for referring to the result acquired from the successive approximation register controller and then providing a bias for the to-be-corrected current source for carrying out current correction. Accordingly, the corrected current can have the excellent accuracy.

摘要翻译： 电流模式DAC包括至少一个待校正的一个电流源，参考电流源，用于比较待校正电流源的电流和参考电流源的电流的电流比较器，校正 控制器，由校正控制器控制并参考用于执行逐次逼近的比较结果的逐次逼近寄存器控制器以及与逐次逼近寄存器控制器和待校正电流源电连接的至少一个校正DAC， 参考从逐次逼近寄存器控制器获取的结果，然后为待校正的电流源提供用于执行电流校正的偏置。 因此，校正电流可以具有优异的精度。

公开(公告)号：US20120326647A1

公开(公告)日：2012-12-27

申请号：US13232086

申请日：2011-09-14

申请人： Wei-Hsu Chang ,  Pei-Cheng Huang ,  Hao-Yu Chang ,  Yen-Shin Lai ,  Kuo-Chung Lee ,  Jo-Yu Wang ,  Yu-Kuang Wu ,  Chih-Chang Chen ,  Shiue-Shr Jiang ,  Jen-Hung Chi

发明人： Wei-Hsu Chang ,  Pei-Cheng Huang ,  Hao-Yu Chang ,  Yen-Shin Lai ,  Kuo-Chung Lee ,  Jo-Yu Wang ,  Yu-Kuang Wu ,  Chih-Chang Chen ,  Shiue-Shr Jiang ,  Jen-Hung Chi

IPC分类号： H02P6/18

CPC分类号： H02P6/182

摘要： A zero-crossing detection circuit and a commutation device using the zero-crossing detection circuit are provided. The zero-crossing detection circuit is adapted into a three-phase brushless DC (direct current) motor with first to third coils. One terminal of each of the first to third coils is electrically coupled together with each other. The detection circuit comprises a first selection circuit, a second selection circuit and a comparator. The first selection circuit and the second selection circuit are both electrically coupled to another terminals of the first to third coils, to obtain first to third terminal voltages, and output one of the first to third terminal voltages according to a selection signal. The comparator is configured for comparing an output of the first selection circuit and an output of the second selection circuit, to output a comparing result.

摘要翻译： 提供过零检测电路和使用过零检测电路的换向装置。 过零检测电路适用于具有第一至第三线圈的三相无刷直流（直流）电动机。 第一至第三线圈中的每一个的一个端子彼此电耦合。 检测电路包括第一选择电路，第二选择电路和比较器。 第一选择电路和第二选择电路都电耦合到第一至第三线圈的另一个端子，以获得第一至第三端子电压，并根据选择信号输出第一至第三端子电压中的一个。 比较器被配置为比较第一选择电路的输出和第二选择电路的输出，以输出比较结果。

公开(公告)号：US20140252995A1

公开(公告)日：2014-09-11

申请号：US13786823

申请日：2013-03-06

申请人： Wei-Hsu Chang ,  Jo-Yu Wang ,  Jen-Hung Chi

发明人： Wei-Hsu Chang ,  Jo-Yu Wang ,  Jen-Hung Chi

IPC分类号： H02P25/02

CPC分类号： H02P7/29

摘要： The present invention provides a motor controller for controlling a DC motor according to a reference signal. The motor controller includes a compensator, a pulse width modulation unit, and a motor driving unit. The compensator generates a control signal according to the reference signal and a sensing signal from the DC motor. The pulse width modulation unit generates a motor control signal by comparing the control signal and a ramp signal having a varying frequency. The motor driving unit receives the motor control signal and drives the DC motor according to the motor control signal.

摘要翻译： 本发明提供一种用于根据参考信号控制DC电动机的电动机控制器。 马达控制器包括补偿器，脉宽调制单元和马达驱动单元。 补偿器根据参考信号和来自直流电动机的感测信号产生控制信号。 脉冲宽度调制单元通过比较控制信号和具有变化频率的斜坡信号来产生电动机控制信号。 马达驱动单元接收马达控制信号，并根据马达控制信号驱动直流马达。

公开(公告)号：US08487571B2

公开(公告)日：2013-07-16

申请号：US13232086

申请日：2011-09-14

申请人： Wei-Hsu Chang ,  Pei-Cheng Huang ,  Hao-Yu Chang ,  Yen-Shin Lai ,  Kuo-Chung Lee ,  Jo-Yu Wang ,  Yu-Kuang Wu ,  Chih-Chang Chen ,  Shiue-Shr Jiang ,  Jen-Hung Chi

发明人： Wei-Hsu Chang ,  Pei-Cheng Huang ,  Hao-Yu Chang ,  Yen-Shin Lai ,  Kuo-Chung Lee ,  Jo-Yu Wang ,  Yu-Kuang Wu ,  Chih-Chang Chen ,  Shiue-Shr Jiang ,  Jen-Hung Chi

IPC分类号： H02P6/18

CPC分类号： H02P6/182

摘要： A zero-crossing detection circuit and a commutation device using the zero-crossing detection circuit are provided. The zero-crossing detection circuit is adapted into a three-phase brushless DC (direct current) motor with first to third coils. One terminal of each of the first to third coils is electrically coupled together with each other. The detection circuit comprises a first selection circuit, a second selection circuit and a comparator. The first selection circuit and the second selection circuit are both electrically coupled to another terminals of the first to third coils, to obtain first to third terminal voltages, and output one of the first to third terminal voltages according to a selection signal. The comparator is configured for comparing an output of the first selection circuit and an output of the second selection circuit, to output a comparing result.

摘要翻译： 提供过零检测电路和使用过零检测电路的换向装置。 过零检测电路适用于具有第一至第三线圈的三相无刷直流（直流）电动机。 第一至第三线圈中的每一个的一个端子彼此电耦合。 检测电路包括第一选择电路，第二选择电路和比较器。 第一选择电路和第二选择电路都电耦合到第一至第三线圈的另一个端子，以获得第一至第三端子电压，并根据选择信号输出第一至第三端子电压中的一个。 比较器被配置为比较第一选择电路的输出和第二选择电路的输出，以输出比较结果。

公开(公告)号：US08994315B2

公开(公告)日：2015-03-31

申请号：US13786823

申请日：2013-03-06

申请人： Wei-Hsu Chang ,  Jo-Yu Wang ,  Jen-Hung Chi

发明人： Wei-Hsu Chang ,  Jo-Yu Wang ,  Jen-Hung Chi

IPC分类号： H02P25/06 ,  H02P7/29

CPC分类号： H02P7/29

摘要： The present invention provides a motor controller for controlling a DC motor according to a reference signal. The motor controller includes a compensator, a pulse width modulation unit, and a motor driving unit. The compensator generates a control signal according to the reference signal and a sensing signal from the DC motor. The pulse width modulation unit generates a motor control signal by comparing the control signal and a ramp signal having a varying frequency. The motor driving unit receives the motor control signal and drives the DC motor according to the motor control signal.

摘要翻译： 本发明提供一种用于根据参考信号控制DC电动机的电动机控制器。 马达控制器包括补偿器，脉宽调制单元和马达驱动单元。 补偿器根据参考信号和来自直流电动机的感测信号产生控制信号。 脉冲宽度调制单元通过比较控制信号和具有变化频率的斜坡信号来产生电动机控制信号。 马达驱动单元接收马达控制信号，并根据马达控制信号驱动直流马达。

公开(公告)号：US08773198B2

公开(公告)日：2014-07-08

申请号：US13571903

申请日：2012-08-10

申请人： Shiueshr Jiang ,  An-Tung Chen ,  Jo-Yu Wang ,  Jen-Hung Chi

发明人： Shiueshr Jiang ,  An-Tung Chen ,  Jo-Yu Wang ,  Jen-Hung Chi

IPC分类号： H03F3/45

CPC分类号： H03F3/45475 ,  H03F3/45928 ,  H03F3/45986 ,  H03F2200/261

摘要： An auto-zero amplifier is disclosed, having an amplifying circuit, a switch, and a difference signal generating circuit. The amplifying circuit receives a first input signal for generating a first output signal, and receives a second input signal for generating a second output signal. The switch is coupled between the amplifying circuit and a capacitor. The switch is conducted for charging or discharging the capacitor to a voltage with the first output signal, and the switch is not conducted for keeping the capacitor at the voltage. The difference signal generating circuit is coupled with the amplifying circuit and the capacitor for generating a difference signal of the first output signal and the second output signal, a multiple of the difference signal, a part of the difference signal, and/or a digital output value for the difference signal.

摘要翻译： 公开了一种具有放大电路，开关和差信号发生电路的自动调零放大器。 放大电路接收用于产生第一输出信号的第一输入信号，并接收用于产生第二输出信号的第二输入信号。 开关耦合在放大电路和电容器之间。 开关用于将电容器充电或放电至具有第一输出信号的电压，并且开关不导通以将电容器保持在电压。 差分信号发生电路与放大电路和电容器耦合，用于产生第一输出信号和第二输出信号的差分信号，差信号的一倍，差分信号的一部分和/或数字输出 差信号的值。

公开(公告)号：US20130038388A1

公开(公告)日：2013-02-14

申请号：US13571903

申请日：2012-08-10

申请人： Shiueshr JIANG ,  An-Tung Chen ,  Jo-Yu Wang ,  Jen-Hung Chi

发明人： Shiueshr JIANG ,  An-Tung Chen ,  Jo-Yu Wang ,  Jen-Hung Chi

IPC分类号： H03F3/45

CPC分类号： H03F3/45475 ,  H03F3/45928 ,  H03F3/45986 ,  H03F2200/261

摘要： An auto-zero amplifier is disclosed, having an amplifying circuit, a switch, and a difference signal generating circuit. The amplifying circuit receives a first input signal for generating a first output signal, and receives a second input signal for generating a second output signal. The switch is coupled between the amplifying circuit and a capacitor. The switch is conducted for charging or discharging the capacitor to a voltage with the first output signal, and the switch is not conducted for keeping the capacitor at the voltage. The difference signal generating circuit is coupled with the amplifying circuit and the capacitor for generating a difference signal of the first output signal and the second output signal, a multiple of the difference signal, a part of the difference signal, and/or a digital output value for the difference signal.

摘要翻译： 公开了一种具有放大电路，开关和差信号发生电路的自动调零放大器。 放大电路接收用于产生第一输出信号的第一输入信号，并接收用于产生第二输出信号的第二输入信号。 开关耦合在放大电路和电容器之间。 开关用于将电容器充电或放电至具有第一输出信号的电压，并且开关不导通以将电容器保持在电压。 差分信号发生电路与放大电路和电容器耦合，用于产生第一输出信号和第二输出信号的差分信号，差信号的一倍，差分信号的一部分和/或数字输出 差信号的值。