Swing Reduction of Ropeway Carriers by Means of Two-Ball Rolling Type Damping Equipment: 2nd Report — Way to Implement Desired Damping for Two-Ball System

2007 ◽  
Author(s):  
H. Sato ◽  
M. Chishima
Keyword(s):  
Friction Coefficient ◽  
Frequency Response ◽  
Dynamic Model ◽  
Time Domain ◽  
Damping Coefficient ◽  
Ball Rolling ◽  
Safety And Reliability ◽  
Transport Safety ◽  
Time Domain Response ◽  
Rolling Balls

To enhance transport safety and reliability of ropeway systems, it is essential to reduce the swing of the carriers that results from wind, etc. In the previous report [1], we provided a practical damping equipment using two rolling balls (hereinafter described as “two-ball rolling type damping equipment”) to reduce the swing of ropeway carriers. A linearized dynamic model is proposed. Then, on the basis of relevant parameters, the frequency response and time domain response of the system is studied and discussed. In this report, we will study relationship between theoretical best damping coefficient ratio and friction coefficient of two-ball system. Then we will provide the way to implement the desired damping for the two-ball system. We will then provide the detail on how to estimate the inherent damping within the two-ball system. In addition, we will show and discuss two balls behavior when this equipment works experimentally.

Swing Reduction of Ropeway Carriers by Means of Two-Ball Rolling Type Damping Equipment

2006 ◽  
Author(s):  
H. Sato ◽  
M. Chishima
Keyword(s):  
Model Test ◽  
Design Parameters ◽  
Ball Rolling ◽  
Safety And Reliability ◽  
Transport Safety

To enhance transport safety and reliability of ropeway systems, it is essential to reduce the swing of the carriers that results from wind, etc. As a means to lessen the swing of the carriers, we will propose damping equipment that uses two balls as the movable mass. We will also discuss the method for adjusting the design parameters for this equipment. Based on a simulation, we will determine the effect of this equipment. In addition, we will refer to the results of a model test to verify the effect of this damping equipment.

A Dynamic Model of Electrostrictive Unimorph Actuators for Haptic Devices

2016 ◽  
Author(s):  
Tahzib Safwat ◽  
Ryan Tosto ◽  
Michael D. Grissom ◽  
Christopher D. Rahn
Keyword(s):  
Frequency Response ◽  
Dynamic Model ◽  
Time Domain ◽  
Haptic Feedback ◽  
High Strain ◽  
Piezoelectric Materials ◽  
Domain Model ◽  
Electroactive Polymer ◽  
Step Response ◽  
Compliant Actuators

Piezoelectric materials are commonly found in many devices, but their usage is limited by the low strain and high stiffness of the material. This prevents their use in “soft” applications, such as compliant actuators for haptic feedback devices and wearable technology. The actuation dynamics of a ferro-electric relaxor terpolymer, a type of soft and high strain electroactive polymer (EAP), are examined. This paper studies the unimorph actuator via a linearized time-domain model and experiments to validate the model include step response and frequency response of tip displacement.

Generating Frequency Response Functions of A Structure from Time Domain Response Signals

2010 ◽  
Author(s):  
Danh Trana ◽  
Mohammad Saraireha ◽  
Jane W. Z. Lu ◽  
Andrew Y. T. Leung ◽  
Vai Pan Iu ◽  
...  
Keyword(s):  
Frequency Response ◽  
Time Domain ◽  
Response Functions ◽  
Frequency Response Functions ◽  
Time Domain Response

scholarly journals Time-domain response of atomically thin MoS2 nanomechanical resonators

2014 ◽  
Vol 105 (4) ◽  
pp. 041911 ◽  
Author(s):  
R. van Leeuwen ◽  
A. Castellanos-Gomez ◽  
G. A. Steele ◽  
H. S. J. van der Zant ◽  
W. J. Venstra
Keyword(s):  
Time Domain ◽  
Nanomechanical Resonators ◽  
Time Domain Response

Vibration Analysis of Diesel’s Undercarriage by Virtual Measure and Actual Measure

2011 ◽  
Vol 228-229 ◽  
pp. 621-626
Author(s):  
Peng Liu ◽  
Ying Yun Huang ◽  
Hao Peng Gao ◽  
Da Sheng Ou
Keyword(s):  
Frequency Response ◽  
Time Domain ◽  
Vibration Analysis ◽  
Response Characteristics ◽  
Amplitude Frequency Response ◽  
Actual Measure ◽  
Frequency Response Characteristics ◽  
The Difference

This paper proposes to verify and test the vibration of diesel’s undercarriage got by virtual measure and actual measure through the analysis of time domain characteristics and amplitude frequency response characteristics of three-orientation vibrant speed of diesel’s undercarriage, represents the difference in time domain characteristics and amplitude frequency response characteristics got by virtual measure and actual measure, expounds the reasons of difference and puts forward a method to diminution the difference. It proves that virtual measure can replace actual measure in a way, though there are some difference in existence, we can erase these difference to the best of ours’ abilities through enough analysis.

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