scholarly journals A snake robot with a contact force measurement system for obstacle-aided locomotion

2010 ◽  
Author(s):  
Pal Liljebäck ◽  
Kristin Y Pettersen ◽  
Øyvind Stavdahl
Keyword(s):  
Contact Force ◽  
Measurement System ◽  
Force Measurement ◽  
Snake Robot ◽  
Force Measurement System

A New Low-Cost System for Tyre-Road Force Measurements: Design and Validation

2007 ◽  
Author(s):  
Francesco Braghin ◽  
Federico Cheli ◽  
Emiliano Giangiulio ◽  
Federico Mancosu
Keyword(s):  
Control Systems ◽  
Contact Force ◽  
Measurement System ◽  
Force Measurement ◽  
Low Cost ◽  
Contact Forces ◽  
Vehicle Safety ◽  
Measurement Systems ◽  
Wheel Turn ◽  
Force Measurement System

The measurement of tyre-road contact forces is the first step towards the development of new control systems for the improvement of vehicle safety and performances. At present, tyre-road contact force measurement systems are very expensive and modify the non suspended vehicle inertia due to their high mass and rotational inertia moment. Thus, vehicle dynamics is significantly affected. The measured contact forces are therefore not fully representative of the contact forces that the tyres will experience during real working conditions. A new low-cost tyre-road contact force measurement system has been developed that is installable on any type of wheel. Its working principle is based on the measurement of three deformations of the wheel. Through a dynamic calibration of the instrumented wheel it is possible to reconstruct all three contact force and torque components once per wheel turn. These forces are then sent to the vehicle chassis and may be used by on-board active control systems to improve vehicle safety and performances. Validation tests were carried out with a vehicle having all four wheels equipped with the low-cost tyre-road contact force measurement system. It was possible to reconstruct contact forces once per wheel turn in any working condition with a precision that is comparable to that of existing high-cost measurement systems ([1], [2], [3], [4], [5]).

scholarly journals Design and Calibration of a Tri-Directional Contact Force Measurement System

2021 ◽  
Vol 11 (2) ◽  
pp. 877
Author(s):  
Rizwan Ahmed ◽  
Christian Maria Firrone ◽  
Stefano Zucca
Keyword(s):  
Contact Force ◽  
Measurement System ◽  
Force Measurement ◽  
Three Dimensional ◽  
Dynamic Contact ◽  
Forced Response ◽  
Contact Forces ◽  
Blade Vibration ◽  
Contact Models ◽  
Force Measurement System

In low pressure turbine stages, adjacent blades are coupled to each other at their tip by covers, called shrouds. Three-dimensional periodic contact forces at shrouds strongly affect the blade vibration level as energy is dissipated by friction. To validate contact models developed for the prediction of nonlinear forced response of shrouded blades, direct contact force measurement during dynamic tests is mandatory. In case of shrouded blades, the existing unidirectional and bi-directional contact force measurement methods need to be improved and extended to a tri-directional measurement of shroud contact forces for a comprehensive and more reliable validation of the shroud contact models. This demands an accurate and robust measurement solution that is compatible with the nature and orientation of the contact forces at blade shrouds. This study presents a cost effective and adaptable tri-directional force measurement system to measure static and dynamic contact forces simultaneously in three directions at blade shrouds during forced response tests. The system is based on three orthogonal force transducers connected to a reference block that will eventually be put in contact with the blade shroud in the test rig. A calibration process is outlined to define a decoupling matrix and its subsequent validation is demonstrated in order to evaluate the effectiveness of the measurement system to measure the actual contact forces acting on the contact.

scholarly journals Real-Time Contact Force Measurement System for Portable Coordinate Measuring Arms

2012 ◽  
pp. 0267-0272
Author(s):  
Daniel Gonzalez-Madruga ◽  
Eduardo Cuesta ◽  
Joaquin Barreiro ◽  
Susana Martinez Pellitero ◽  
Braulio J. Alvarez
Keyword(s):  
Real Time ◽  
Contact Force ◽  
Measurement System ◽  
Force Measurement ◽  
Force Measurement System

scholarly journals An fMRI-compatible force measurement system for the evaluation of the neural correlates of step initiation

2017 ◽  
Vol 7 (1) ◽  
Author(s):  
Andrea Cristina de Lima-Pardini ◽  
Raymundo Machado de Azevedo Neto ◽  
Daniel Boari Coelho ◽  
Catarina Costa Boffino ◽  
Sukhwinder S. Shergill ◽  
...  
Keyword(s):  
Measurement System ◽  
Force Measurement ◽  
Neural Correlates ◽  
Step Initiation ◽  
Force Measurement System

Design and Development on Piezoelectric Ceramic Type Insole 3D Force Measurement System Based on LabVIEW

2011 ◽  
Vol 383-390 ◽  
pp. 774-779
Author(s):  
Ye Min Guo ◽  
Lan Mei Wang ◽  
Rui Yong Xue
Keyword(s):  
Shear Stress ◽  
Measurement System ◽  
Plantar Pressure ◽  
Piezoelectric Ceramic ◽  
Force Measurement ◽  
Stress System ◽  
Scientific Methods ◽  
Lab View ◽  
Design Requirements ◽  
Force Measurement System

According to the requirements of measurement of plantar pressure and shear stress in the meantime, this thesis puts forward a plan to construct a new insole plantar pressure and shear stress system based on multifunction data acquisition modular and Lab VIEW. Then the hardware part and software part are designed and developed respectively. There are 3 sensors are arrayed at each measurement point, that means 3 sensors are assembled in 3 different directions of X,Y and Z . The piezoelectric ceramic type sensors are designed, manufactured and calibrated according to scientific methods. Meanwhile, the DAQ card is selected carefully. Of course, the software part is developed based on Lab VIEW. A series of tests are performed in order to validate the function of the measurement system. The results satisfy the anticipated design requirements. At last, the problems and application trend of the measurement system are predicted.

Sign in / Sign up

Export Citation Format

Share Document