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    • 7. 发明申请
    • FEEDBACK CANCELING SYSTEM AND METHOD
    • 反馈取消系统和方法
    • US20140254825A1
    • 2014-09-11
    • US14201148
    • 2014-03-07
    • BOARD OF TRUSTEES OF NORTHERN ILLINOIS UNIVERSITY
    • Mansour Tahernezhadi
    • H04R3/04
    • H04R3/02
    • Reducing feedback in an input signal that contains a signal component based on an output signal from a proximate output. The input signal is separated into a plurality of frequency bands by band pass filters. The power of signal in each band is determined, and the band signal with the greatest power is selected. That band's signal is sampled at a sampling rate, and at regular intervals one of the samples is selected. Blind signal separation is used to estimate signal sources from the selected samples. The estimated signals are compared to the output signal, and the estimated signal most similar to the output signal is subtracted from the input signal.
    • 基于来自邻近输出的输出信号减少包含信号分量的输入信号中的反馈。 输入信号通过带通滤波器分离成多个频带。 确定每个频带中的信号功率,并选择功率最大的频带信号。 该频带的信号以采样率进行采样,并且以规则的间隔选择样本之一。 盲信号分离用于估计所选样品的信号源。 将估计的信号与输出信号进行比较,并从输入信号中减去与输出信号最相似的估计信号。
    • 9. 发明授权
    • Self-tuning vibration absorber
    • 自调节振动吸收器
    • US08044629B2
    • 2011-10-25
    • US12201584
    • 2008-08-29
    • Behrooz Fallahi
    • Behrooz Fallahi
    • G05B5/01
    • G05B5/00F16F7/1005F16F7/1022F16F7/116G05B13/042G05B2219/39199
    • A self-tuning vibration absorber including a carrier rod assembly having operatively connected thereto a mounting mechanism for mounting the carrier rod assembly to a primary system and a hollow shafted motorized tuning mechanism for tuning a phase difference between vibration of the primary system and vibration of the carrier rod assembly to 90 degrees, the carrier rod assembly further including a detecting mechanism for detecting the vibration of the primary system and the vibration of the carrier rod assembly, and a controller in electrical connection with the detecting mechanism and the tuning means for controlling the tuning mechanism based on the vibration of the primary system and the vibration of the carrier rod assembly detected. A method of vibration dampening, a method of controlling a self-tuning vibration absorber, and a method of reducing hunting motion in railcars.
    • 一种自调节振动吸收器,其包括具有可操作地连接到其上的载体杆组件,用于将所述载体杆组件安装到主系统的安装机构和用于调节所述主系统的振动与所述主系统的振动之间的相位差的空心轴电动调谐机构 承载杆组件为90度,所述承载杆组件还包括用于检测所述主系统的振动和所述承载杆组件的振动的检测机构,以及与所述检测机构和所述调谐装置电连接的控制器, 基于主系统的振动和检测到的载体杆组件的振动的调谐机构。 一种减振方法,一种自调节振动吸收器的控制方法,以及一种降低轨道车中的摆动运动的方法。