To calibrate the force sensor used in the friction and wear tester in static state

loading and unloading experiment are made.And then according to the least squares principle

two powerful data analysis softwares

Matlab and Origin are adopted

for test data’s linear regression and computation to get the input and output mathematical model and static calibration indexes of the force sensor

such as sensitivity

nonlinear error and so on.The experiment results show that two softwares calibration results are close to each other and they also have their own characteristics.