Bandlimited multiple Fourier linear combiner for real-time tremor compensation

被引：56

作者：

Veluvolu, K. C. ^{[1
]}

Tan, U. X. ^{[1
]}

Latt, W. T. ^{[1
]}

Shee, C. Y. ^{[1
]}

Ang, W. T. ^{[1
]}

机构：

[1] Nanyang Technol Univ, Sch Mech & Aerosp Engn, Singapore 639798, Singapore

来源：

2007 ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY, VOLS 1-16 | 2007年

关键词：

D O I：

10.1109/IEMBS.2007.4352922

中图分类号：

R318 [生物医学工程];

学科分类号：

0831 ;

摘要：

Surgical accuracy of the hand-held instruments depends on the active compensation of disturbance and tremor. Physiological tremor is one of the main causes for imprecision in micro-surgery procedures. One of the popular tremor compensation methods is based on weighted-frequency Fourier linear combiner (WFLC) algorithm, that can adapt to the changes in frequency as well as amplitude of the tremor signal. WLFC estimates the dominant frequency and the amplitude. For the case of tremor with frequency variation or comprising of two or three frequencies close in spectral domain, the WFLC performance is degraded. In this paper, we present a bandlimited multiple Fourier linear combiner that can track the modulated signals with multiple frequency components. We also discuss the tremor sensing with accelerometers. Using the proposed algorithm the drift caused by the accelerometers is also eliminated. The proposed filter is tested in real-time for 1-DOF cancellation of tremor.

引用

页码：2847 / 2850

页数：4

共 12 条

[1]

Ang WT, 2000, LECT NOTES COMPUT SC, V1935, P878

[2]

ELBLE RJ, 1985, TREMOR

[3] Modeling and canceling tremor in human-machine interfaces [J].

Riviere, CN ;

Thakor, NV .

IEEE ENGINEERING IN MEDICINE AND BIOLOGY MAGAZINE, 1996, 15 (03) :29-36

[4] Toward active tremor canceling in handheld microsurgical instruments [J].

Riviere, CN ;

Ang, WT ;

Khosla, PK .

IEEE TRANSACTIONS ON ROBOTICS AND AUTOMATION, 2003, 19 (05) :793-800

[5]

Riviere CN, 2001, P ANN INT IEEE EMBS, V23, P3477, DOI 10.1109/IEMBS.2001.1019580

[6] Adaptive canceling of physiological tremor for improved precision in microsurgery [J].

Riviere, CN ;

Rader, RS ;

Thakor, NV .

IEEE TRANSACTIONS ON BIOMEDICAL ENGINEERING, 1998, 45 (07) :839-846

[7]

Schafer RW., 2001, DISCRETE TIME SIGNAL

[8] AN ADAPTIVE ESTIMATION OF PERIODIC SIGNALS USING A FOURIER LINEAR COMBINER [J].

VAZ, C ;

KONG, X ;

THAKOR, N .

IEEE TRANSACTIONS ON SIGNAL PROCESSING, 1994, 42 (01) :1-10

[9] ADAPTIVE FOURIER ESTIMATION OF TIME-VARYING EVOKED-POTENTIALS [J].

VAZ, CA ;

THAKOR, NV .

IEEE TRANSACTIONS ON BIOMEDICAL ENGINEERING, 1989, 36 (04) :448-455

[10]

Widrow B., 1985, Adaptive Signal Processing

← 1 2 →