公开(公告)号：WO1989000722A1

公开(公告)日：1989-01-26

申请号：PCT/US1988001980

申请日：1988-06-10

Applicant: HUGHES AIRCRAFT COMPANY

Inventor： HUGHES AIRCRAFT COMPANY ,  ALCONE, Jerry, M.

IPC: G05B13/02

CPC classification number: H03H21/00 ,  G05B13/02

Abstract: An adaptive noise cancellation system reduces undesired noise in a closed loop control system by injecting an adaptively constructed noise cancellation signal at an appropriate point in the closed control loop. The generation of a compensation filter N for adaptive noise cancellation loop error signal is disclosed by two methods. A first method is an inverse error rejection response (IERR) method. A second method optimally matches spectrums of a noise signal and a noise reference signal at the adaptive noise cancellation system. This second method is referred to as a spectral matching (SM) method.

公开(公告)号：EP0324029A1

公开(公告)日：1989-07-19

申请号：EP88908442.0

申请日：1988-06-10

Applicant: HUGHES AIRCRAFT COMPANY

Inventor： ALCONE, Jerry, M.

IPC: G05B13 ,  H03H21 ,  H04B3

CPC classification number: H03H21/00 ,  G05B13/02

Abstract: An adaptive noise cancellation system reduces undesired noise in a closed loop control system by injecting an adap­ tively constructed noise cancellation signal at an appropriate point in the closed control loop. The generation of a comp­ ensation filter N for adaptive noise cancellation loop error signal is disclosed by two methods. A first method is an inverse error rejection response (IERR) method. A second method optimally matches spectrums of a noise signal and a noise ref­ erence signal at the adaptive noise cancellation system. This second method is referred to as a spectral matching (SM) method.

公开(公告)号：EP0324029B1

公开(公告)日：1994-11-30

申请号：EP88908442.2

申请日：1988-06-10

Applicant: Hughes Aircraft Company

Inventor： ALCONE, Jerry, M.

IPC: G05B13/02

CPC classification number: H03H21/00 ,  G05B13/02

Abstract: An adaptive noise cancellation system reduces undesired noise in a closed loop control system by injecting an adaptively constructed noise cancellation signal at an appropriate point in the closed control loop. The generation of a compensation filter N for adaptive noise cancellation loop error signal is disclosed by two methods. A first method is an inverse error rejection response (IERR) method. A second method optimally matches spectrums of a noise signal and a noise reference signal at the adaptive noise cancellation system. This second method is referred to as a spectral matching (SM) method.