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    • 2. 发明申请
    • SENSORLESS BLDC MOTOR SYSTEMS AND DRIVING METHODS OF SENSORLESS BLDC MOTOR
    • 无传感器BLDC电动机的传感器和驱动方法
    • US20120242266A1
    • 2012-09-27
    • US13347128
    • 2012-01-10
    • Young Kyun CHOHui Dong LEEJaewon NAMJong-Kee KWON
    • Young Kyun CHOHui Dong LEEJaewon NAMJong-Kee KWON
    • H02P6/18
    • H02P6/142H02P6/15
    • Provided is a sensorless BLDC motor system. The sensorless BLDC motor system includes a BLDC motor, a comparator, a motor controller, a three-phase inverter, and a mode selector. The BLDC motor includes first to third coils. The comparator compares a voltage of a specific coil of the first to third coils with a neutral-point voltage to output the compared result. The voltage of the specific coil becomes equal to the neutral-point voltage and a specific time elapses, and then the motor controller generates first and second coil control signals based on the compared result. The three-phase inverter supplies a source voltage or ground voltage to the specific coil, or floats the specific coil, in response to the first and second coil control signals. The mode selector selects a driving mode of the BLDC motor by adjusting the specific time.
    • 提供无传感器BLDC电机系统。 无传感器BLDC电机系统包括BLDC电机,比较器,电机控制器,三相逆变器和模式选择器。 BLDC电机包括第一至第三线圈。 比较器将第一至第三线圈的特定线圈的电压与中性点电压进行比较,以输出比较结果。 特定线圈的电压等于中性点电压,经过一定时间,然后电机控制器根据比较结果产生第一和第二线圈控制信号。 三相逆变器响应于第一和第二线圈控制信号向特定线圈提供源极电压或接地电压,或者浮动特定线圈。 模式选择器通过调整具体时间来选择BLDC电机的驱动模式。
    • 6. 发明申请
    • ANALOG-DIGITAL CONVERTER AND POWER SAVING METHOD THEREOF
    • 模拟数字转换器及其节能方法
    • US20130076552A1
    • 2013-03-28
    • US13615052
    • 2012-09-13
    • Jaewon NAMYoung Kyun ChoYil Suk Yang
    • Jaewon NAMYoung Kyun ChoYil Suk Yang
    • H03M1/34
    • H03M1/002H03M1/125H03M1/462
    • Disclosed is an analog-digital converter which includes a pre-amplifier configured to output a comparison result between a sampled analog input signal and a reference signal and to control a power supply operation in response to a power control signal; a digital signal processor configured to generate a digital signal based on the comparison result; a power controller configured to generate an amplifier operation clock signal for controlling the pre-amplifier; and a counter configured to count the number of falling edges of the amplifier operation clock signal and to detect a power interruption point of time of the pre-amplifier according to the counted falling edge number. The power controller generates the power control signal for interrupting a power to be supplied to the pre-amplifier when the power interruption point of time of the pre-amplifier is detected.
    • 公开了一种模拟数字转换器,其包括:前置放大器,其被配置为输出采样的模拟输入信号和参考信号之间的比较结果,并且响应于功率控制信号来控制电源操作; 配置为基于所述比较结果生成数字信号的数字信号处理器; 功率控制器,被配置为产生用于控制前置放大器的放大器操作时钟信号; 以及计数器,被配置为对放大器操作时钟信号的下降沿的数量进行计数,并根据计数的下降沿数检测前置放大器的电源中断时间点。 当检测到前置放大器的电源中断时间点时,功率控制器产生用于中断提供给前置放大器的电力的功率控制信号。
    • 7. 发明申请
    • POWER CONTROL DRIVING DEVICE AND METHOD THEREOF
    • 电力控制驱动装置及其方法
    • US20130135912A1
    • 2013-05-30
    • US13620446
    • 2012-09-14
    • Jaewon NAMMinki KimJimin OhYil Suk Yang
    • Jaewon NAMMinki KimJimin OhYil Suk Yang
    • H02M7/537
    • H02M1/088H02M7/5387H02M2001/0012
    • Disclosed is a power control driving device which includes a sine wave signal generating unit; a control signal converting unit configured to convert a sine wave from the sine wave signal generating unit into a multi-bit control signal; and a three-phase inverter circuit configured to output a voltage varied by the multi-bit control signal from the control signal converting unit. The control signal converting unit includes a multi-bit sigma-delta modulator configured to convert an analog sine wave into a digital signal. The three-phase inverter circuit includes a plurality of switch units, on-off states of the plurality of switch units being controlled according to the multi-bit control signal from the control signal converting unit.
    • 公开了一种功率控制驱动装置,其包括正弦波信号生​​成单元; 控制信号转换单元,被配置为将来自正弦波信号生​​成单元的正弦波转换为多位控制信号; 以及三相逆变器电路,被配置为输出由来自控制信号转换单元的多位控制信号变化的电压。 控制信号转换单元包括配置成将模拟正弦波转换为数字信号的多位Σ-Δ调制器。 三相逆变器电路包括多个开关单元,根据来自控制信号转换单元的多位控制信号来控制多个开关单元的开关状态。