会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 1. 发明授权
    • Selectable notch filter
    • 可选择陷波滤波器
    • US07589604B2
    • 2009-09-15
    • US11607565
    • 2006-12-01
    • Lukose NinanStephen E. Krafft
    • Lukose NinanStephen E. Krafft
    • H03H7/01
    • H01P1/20H01P1/203
    • According to one exemplary embodiment, a selectable notch filter includes a transmission line, a bias circuit, and a switch for selectably coupling the transmission line to ground. In one embodiment, the switch is a PIN diode. The selectable notch filter can selectably suppress a first frequency from being output when the transmission line is coupled to ground. Additionally, the selectable notch filter can selectably suppress a second frequency from being output when the transmission line is not coupled to ground. In one embodiment, the first frequency is approximately equal to a multiple of two of the second frequency. In one embodiment, the selectable notch filter can utilize more than one transmission line.
    • 根据一个示例性实施例,可选择的陷波滤波器包括传输线,偏置电路和用于可选择地将传输线耦合到地的开关。 在一个实施例中,开关是PIN二极管。 当传输线耦合到地时,可选择的陷波滤波器可以可选择地抑制第一频率的输出。 此外,当传输线未耦合到地时,可选择的陷波滤波器可以可选地抑制第二频率的输出。 在一个实施例中,第一频率近似等于第二频率的两倍的倍数。 在一个实施例中,可选择的陷波滤波器可以利用多于一个的传输线。
    • 2. 发明授权
    • Buck converter fault detection method
    • 降压转换器故障检测方法
    • US07593200B2
    • 2009-09-22
    • US11838339
    • 2007-08-14
    • Wenkai WuGeorge Schuellein
    • Wenkai WuGeorge Schuellein
    • H02H3/00
    • H02H7/1213
    • A circuit for detecting faults in a converter, the converter including a switching stage having high- and low-side series switches connected together at a switching node and fault circuitry for managing a plurality of fault conditions, an input voltage source being provided at one terminal of the high-side switch. The circuit including a gate driver circuit connected to gate terminals of the high- and low-side switches for providing PWM signals to control the switching stage; a comparator circuit for comparing a voltage at the switching node to the input voltage and providing an output signal, the comparator circuit having output, positive and negative terminals; a capacitor connected to the output terminal of the comparator circuit to generate an AC component of the comparator circuit output signal; and a rectifier circuit connected to the capacitor for rectifying the AC component of the comparator circuit output signal and providing a fault-indicating signal to the gate driver circuit. The fault-indicating signal is used to drive the fault circuitry to correct a fault condition selected from the plurality of fault conditions in the converter system.
    • 一种用于检测转换器中的故障的电路,所述转换器包括在开关节点处连接在一起的高侧和低侧串联开关的开关级和用于管理多个故障条件的故障电路,在一个端子处提供输入电压源 的高侧开关。 该电路包括连接到高侧和低侧开关的栅极端的栅极驱动电路,用于提供PWM信号以控制开关级; 比较器电路,用于将开关节点处的电压与输入电压进行比较并提供输出信号,所述比较器电路具有输出端子,正极端子和负极端子; 电容器连接到比较器电路的输出端,以产生比较器电路输出信号的AC分量; 以及整流电路,连接到电容器,用于对比较器电路输出信号的AC分量进行整流,并向栅极驱动器电路提供故障指示信号。 故障指示信号用于驱动故障电路以校正从转换器系统中的多个故障状况中选择的故障状况。
    • 4. 发明授权
    • Parking control technique for permanent magnet motor drives with sinusoidal BEMF
    • 具有正弦BEMF的永磁电动机驱动停车控制技术
    • US07592770B2
    • 2009-09-22
    • US11770047
    • 2007-06-28
    • Eddy Ying Yin Ho
    • Eddy Ying Yin Ho
    • H02P3/18
    • H02P6/20H02P6/24
    • A method and system for controlling a current regulator motor control for parking a motor rotor in a predetermined position, wherein a first current command and a first angle command are supplied to a current regulator for a first parking time, to move the rotor to an intermediate position; and a second current command and a second angle command are supplied to the current regulator for a second parking time, to move the rotor to a predetermined position. The current regulator may have a normal voltage output range, and a circuit may be provided for limiting a voltage output of the current regulator to a reduced voltage output range for at least a portion of the parking time. Advantageously the motor is a permanent-magnet synchronous motor with sinusoidal back-EMF.
    • 一种用于控制用于将电动机转子停放在预定位置的电流调节器电动机控制的方法和系统,其中第一电流指令和第一角度指令被提供给用于第一停车时间的电流调节器,以将转子移动到中间 位置; 并且第二电流指令和第二角度指令被提供给电流调节器用于第二停车时间,以将转子移动到预定位置。 电流调节器可以具有正常的电压输出范围,并且可以提供电路用于将电流调节器的电压输出限制在停车时间的至少一部分的降低的电压输出范围。 有利地,电动机是具有正弦反电动势的永磁同步电动机。