Taking 20-ton resistance-strain-cylindric-load-sensor system as a studying object, this paper more completely studied its unlinearity error. Using the finite element theory and computer simulation technique, the paper analyzed the strain in the working area of the elastic body, and pointed out that there are strain gradients within the working area, which is the main source of the system's non-linear error. The calculation formula of non-linear error caused by the strain gradient was derived. The paper also indicates that the system's non-linear error consists of two parts. One part comes from the system's inherent non-linear error. The other part is the non- linear error caused by the strain gradient. The latter gives a great contribution to the system's non-linear error. The studied result was applied to a 50-ton resistance-strain-cylindric-sensor structure design. Also the effect of structural parameters of the elastomer on output unlinearity of the sensor is investigated. Some important conclusions are obtained.

purchase the full-text of this paper (price £20)

go to the previous paper
go to the next paper
return to the table of contents
return to the book description
purchase this book (price £75 +P&P)