公开(公告)号：US20210336821A1

公开(公告)日：2021-10-28

申请号：US16476879

申请日：2019-04-28

Applicant: Xi'an University of Technology

Inventor： Haipeng REN ,  Junliang YAO ,  Chao BAI

IPC: H04L27/00

Abstract: a chaotic shape-forming and corresponding matched filter-based wireless communication method is provided, and the method includes that: 1) data to be transmitted is prepared; 2) chaotic shape-forming filter is performed on a digital symbol to be transmitted to generate a baseband signal; 3) the baseband signal is transmitted and transferred by use of a radio frequency component and transmitting antenna of a conventional wireless communication system; 4) a wireless signal is received by use of a conventional receiving antenna, and down-carrier process is performed on the received signal to obtain a received baseband signal; 5) matched filter is performed on the received baseband signal; 6) wireless channel estimation and multipath interference cancellation judgment threshold calculation are performed; and 7) sampling judgment is performed on an output signal of matched filter, symbol sampling is performed on the output signal of the matched filter in Step 5), and the sampled signal is judged by use of a judgment threshold calculated in Step 6) to obtain a decoded output signal.

公开(公告)号：US20200335978A1

公开(公告)日：2020-10-22

申请号：US16842816

申请日：2020-04-08

Applicant: Xi'an University of Technology

Inventor： Haipeng REN ,  Jie LI

IPC: H02J3/48 ,  H02J3/38

Abstract: The present disclosure discloses an adaptive control method for an output feedback of a VSG. The method includes: analog signals are converted to digital values; VSG excitation output by reactive power-voltage regulation control is calculated, and an output voltage amplitude and a grid voltage amplitude of a three-phase full-bridge inverter are calculated; an active power, a reactive power and an excitation electromotive force are calculated; an initial value of speed feedback coefficient is calculated; angular speed and phase are output, and a rotation speed difference and an angular acceleration are calculated; the speed feedback coefficient is set according to the rotation speed difference; the CLARK transform is performed by means of the excitation electromotive force to obtain a voltage in an α-β stationary coordinate system; and SVPWM is performed to obtain a six-way switch control pulse driving the three-phase full-bridge inverter and implement a three-phase AC current feedback grid.