Experimental data for assessing the repeatability error in Force Sensing Resistors

Published: 24-01-2019| Version 2 | DOI: 10.17632/cxh3xg82b3.2
Contributor:
Leonel Paredes-Madrid

Description

Data reports output voltages when testing FlexiForce and Interlink sensors under repetitive loading conditions. This was done to assess sensors' repeatability using: a) An inverting-amplifier circuit with feedback resistor (rf) signaled in each file. b) A voltage divider circuit, where the sensor is series-connected with a resistor, rd. Both sensors were tested with circuits a) and b) at multiple sourcing voltages (1.25V; 2.5V; 5V; 7.5V). 16 Specimens of each sensor model were tested at the aforementioned conditions. Data in the files are organized as follows: Column 1 through 3: Internal use, do not provide valuable information Column 4: Nominal force applied to the sensors. It was used to close the force loops using load cell measurements in the test bench. Column 5: Output voltage from Sensor 1 Column 6: not used. Column 7: Output voltage from Sensor 2 Column 8: not used …. Column 35: Output voltage from Sensor 16 Column 36: not used Column 37: Voltage applied to the sensor, i.e. voltage in circuit a) or b).

Files

Steps to reproduce

A tailored testbench was assembled to hold 16 Force Sensing Resistors (FSRs) in a Sandwich-like configuration. FSRs where loaded with a linear motor and a spring that provided mechanical compliance. Force loops were closed a LCHD-5 load cell.