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    • 39. 发明授权
    • Wideband receiver for wireless communication system and method for controlling the same
    • 用于无线通信系统的宽带接收机及其控制方法
    • US08467757B2
    • 2013-06-18
    • US12871221
    • 2010-08-30
    • Cheol-Woo Ahn
    • Cheol-Woo Ahn
    • H04B1/16
    • H04B1/28H04B1/1027H04B2215/065
    • A wideband receiver for a wireless communication system and a method for controlling the same are provided. In the wideband receiver for a wireless communication system, a receive path includes a mixer for receiving a Radio Frequency (RF) signal having a frequency fSG and for converting the RF signal into an Intermediate Frequency (IF) signal having a frequency fIF by mixing the RF signal with a first local oscillation signal having a first local oscillation frequency fLO1, and at least one Phase Locked Loop (PLL) for providing the local oscillation signal to the mixer. A control block determines whether a half-IF signal having a center frequency of fSG−fIF/2 exists in the IF signal, and when the half-IF signal exists, controls the at least one PLL to generate a second local oscillation signal having a second local oscillation frequency fLO2 greater than the first local oscillation frequency fLO1.
    • 提供了一种用于无线通信系统的宽带接收机及其控制方法。 在用于无线通信系统的宽带接收机中,接收路径包括用于接收具有频率fSG的射频(RF)信号的混频器,并且用于通过混合频率将RF信号转换成具有频率fIF的中频(IF)信号 RF信号具有具有第一本地振荡频率fLO1的第一本地振荡信号,以及用于向混频器提供本地振荡信号的至少一个锁相环(PLL)。 控制块确定在IF信号中是否存在具有中心频率fSG-fIF / 2的半中频信号,并且当半中频信号存在时,控制至少一个PLL以产生第二本地振荡信号,该第二本地振荡信号具有 第二本地振荡频率fLO2大于第一本地振荡频率fLO1。
    • 40. 发明授权
    • Torque control method for high-speed switched reluctance motor
    • 高速开关磁阻电机的转矩控制方法
    • US08441223B2
    • 2013-05-14
    • US13024127
    • 2011-02-09
    • Jin-Woo AhnDong-Hee Lee
    • Jin-Woo AhnDong-Hee Lee
    • H02P1/46
    • H02P23/0086H02P25/098Y02P80/116
    • Disclosed herein is a torque control method for a high-speed Switched Reluctance Motor (SRM), which controls a torque in the high-speed operation of a 2-phase SRM. In the torque control method for a high-speed SRM, a positive torque (T*mA) of an active phase (A phase) of the two phases of the SRM is compensated for based on a negative torque attributable to an inactive phase (B phase) of two phases during a compensation control enable interval (ENA) ranging from a time point at which the active phase (A phase) is turned on to a time point at which tail current of the inactive phase (B phase) remains. Accordingly, the present invention can remarkably reduce a torque ripple occurring in high-speed operation mode in consideration of the influence of a negative torque attributable to tail current.
    • 这里公开了用于控制两相SRM的高速运转中的转矩的高速开关磁阻电动机(SRM)的转矩控制方法。 在高速SRM的转矩控制方法中,SRM的两相的有效相(A相)的正转矩(T * mA)根据归因于无效相(B 在从有源相位(A相)接通的时间点到停止阶段(B相)的尾部电流保持的时间点的补偿控制使能间隔(ENA)期间的两相的相位。 因此,考虑到归因于尾部电流的负转矩的影响,本发明能够显着地降低在高速运转模式中发生的转矩脉动。