Amplitude Controlled Adaptive Feedback Resonance in a Single Degree-of-Freedom Mass-Spring Mechanical System

This paper considers the vibration control of a single degree of freedom mass-spring-damper system when subjected to an arbitrary, unmeasurable disturbance. The idea of a disturbance observer is introduced and it is shown how an estimate of the excitation can be derived and used to generate a control, which reduces the vibration. This control is shown to be robust with respect to the parameters describing the behavior of the system. Experimental results are presented which show the efficacy of the method when the system is excited by periodic, random, and impact forces. Comments are made on the application of the method.

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An Experimental Hand/Arm Model for Human Interaction With a Telemanipulation System

10.1115/imece2001/dsc-24617 ◽

2001 ◽

Author(s):

John E. Speich ◽

Liang Shao ◽

Michael Goldfarb

Keyword(s):

Experimental Data ◽

Second Order ◽

Degree Of Freedom ◽

Human Interaction ◽

Haptic Interfaces ◽

Single Degree Of Freedom ◽

Single Degree ◽

Lumped Parameter ◽

Mass Spring ◽

System 1

Abstract This paper describes the development of a linear single degree-of-freedom lumped-parameter hand/arm model for the operator of a telemanipulaton system. The model form and parameters were determined from experimental data taken from a single degree-of-freedom telemanipulation system. Typically, the human is modeled as a second order mass-spring-damper system [1, 2]. The model developed in this paper, however, includes an additional spring and damper to better approximate the dynamics of the human while interacting with the manipulator. This model can be used in the design and simulation of control architectures for telemanipulation systems and haptic interfaces.

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Reliability of a Single-Degree-of-Freedom Mechanical System

IEEE Transactions on Aerospace ◽

10.1109/ta.1963.4319424 ◽

1963 ◽

Vol 1 (2) ◽

pp. 575-579

Author(s):

W. H. Bleuel

Keyword(s):

Mechanical System ◽

Degree Of Freedom ◽

Single Degree Of Freedom ◽

Single Degree

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A Numerical Model to Reproduce Vortex Induced Vibrations of a Circular Cylinder

Volume 9: 6th FSI, AE and FIV and N Symposium ◽

10.1115/pvp2006-icpvt-11-93972 ◽

2006 ◽

Cited By ~ 1

Author(s):

Marco Belloli ◽

Giorgio Diana ◽

Ferruccio Resta ◽

Sara Muggiasca

Keyword(s):

Numerical Model ◽

Circular Cylinder ◽

Mechanical System ◽

Wind Velocity ◽

Experimental Tests ◽

Degree Of Freedom ◽

Single Degree Of Freedom ◽

Single Degree ◽

Vortex Induced Vibrations ◽

Linear Mechanical System

This article describes a numerical model to reproduce vortex induced vibrations of a circular cylinder. It consists in a single degree of freedom non linear mechanical system, with characterizing parameters identified on the basis of experimental tests in order to reproduce the main features of VIV, in particular vibration amplitudes as function of wind velocity and the energy introduction by the blowing fluid into the mechanical system.

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ADAMS-Based Vibrating Subsoiler System Simulation Analysis

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.128-129.42 ◽

2011 ◽

Vol 128-129 ◽

pp. 42-45

Author(s):

Li Li Xin ◽

Ji Hui Liang ◽

Li Chun Qiu

Keyword(s):

Dynamic Analysis ◽

Mechanical System ◽

Vibration Frequency ◽

Simulation Analysis ◽

System Simulation ◽

Degree Of Freedom ◽

Single Degree Of Freedom ◽

Single Degree ◽

Acting Force ◽

Advance Speed

For the vibrating subsoiler, considering the material acting force, the system is simplified as a single degree of freedom weight-spring-damp model which will simulate the vibrating subsoiler system based on Automatic Dynamic Analysis of Mechanical System (ADAMS). The analysis result shows that the vibrating subsoiler can not perform well under conditions of high vibration frequency and advance speed.

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