公开(公告)号：US06468036B1

公开(公告)日：2002-10-22

申请号：US09604844

申请日：2000-06-27

申请人： Jiajun Song ,  Hongcai Zhao ,  Wei Song

发明人： Jiajun Song ,  Hongcai Zhao ,  Wei Song

IPC分类号： F01D700

CPC分类号： F04D25/105 ,  F01D7/00

摘要： An adjustable crank for adjusting the swinging-angle of a fan comprises a first and a second eccentric disks, the first disk is rotatablely inserted in the second disk, a ring-shape spring is disposed between the engaging surfaces of them to couple them with predetermined torque. A crank pin is eccentrically and integrally formed on the first disk. The second disk is provided with a rotation means for the second disk being turned to rotate about a center axis, which is eccentric with respect to the engaging surfaces. A rotary knob is fixedly mounted on the end of the crankpin for manually turning the first disk to rotate relative to the second disk. Thereby the crank length can be continuously adjusted and self-fixed after being adjusted. Apparently, it is unusually simple in structure, very easy to adjust, especially convenient and cheap in manufacture, and reliable in running.

摘要翻译： 用于调节风扇的摆动角度的可调节曲柄包括第一和第二偏心盘，第一盘可旋转地插入第二盘中，环形弹簧设置在它们的接合表面之间，以将它们与预定的 扭矩。 曲柄销偏心地并整体形成在第一盘上。 第二盘设置有旋转装置，用于第二盘旋转以围绕相对于接合表面偏心的中心轴线旋转。 旋转旋钮固定地安装在曲柄销的端部上，用于手动转动第一盘相对于第二盘旋转。 因此，可以在调整曲柄长度之后连续地调节和自固定。 显然，结构异常简单，调试方便，制造方便，便宜，运行可靠。

公开(公告)号：US10423126B2

公开(公告)日：2019-09-24

申请号：US15830752

申请日：2017-12-04

申请人： National Technology & Engineering Solutions of Sandia, LLC ,  Rush D. Robinett, III ,  Ossama Abdelkhalik ,  Jiajun Song

发明人： David G. Wilson ,  Rush D. Robinett, III ,  Ossama Abdelkhalik ,  Jiajun Song ,  Giorgio Bacelli

IPC分类号： G05B11/38 ,  F03B13/16 ,  F03B15/00 ,  G06F17/14 ,  F03B13/22

摘要： A multi-resonant wide band controller decomposes the wave energy converter control problem into sub-problems; an independent single-frequency controller is used for each sub-problem. Thus, each sub-problem controller can be optimized independently. The feedback control enables actual time-domain realization of multi-frequency complex conjugate control. The feedback strategy requires only measurements of the buoy position and velocity. No knowledge of excitation force, wave measurements, nor wave prediction is needed. As an example, the feedback signal processing can be carried out using Fast Fourier Transform with Hanning windows and optimization of amplitudes and phases. Given that the output signal is decomposed into individual frequencies, the implementation of the control is very simple, yet generates energy similar to the complex conjugate control.

公开(公告)号：US20180164754A1

公开(公告)日：2018-06-14

申请号：US15830752

申请日：2017-12-04

申请人： Rush D. Robinett, III ,  Ossama Abdelkhalik ,  Jiajun Song ,  National Technology & Engineering Solutions of Sandia, LLC

发明人： David G. Wilson ,  Rush D. Robinett, III ,  Ossama Abdelkhalik ,  Jiajun Song ,  Giorgio Bacelli

IPC分类号： G05B11/38 ,  F03B13/22 ,  F03B15/00 ,  G06F17/14

摘要： A multi-resonant wide band controller decomposes the wave energy converter control problem into sub-problems; an independent single-frequency controller is used for each sub-problem. Thus, each sub-problem controller can be optimized independently. The feedback control enables actual time-domain realization of multi-frequency complex conjugate control. The feedback strategy requires only measurements of the buoy position and velocity. No knowledge of excitation force, wave measurements, nor wave prediction is needed. As an example, the feedback signal processing can be carried out using Fast Fourier Transform with Hanning windows and optimization of amplitudes and phases. Given that the output signal is decomposed into individual frequencies, the implementation of the control is very simple, yet generates energy similar to the complex conjugate control.