Experimental data for assessing the repeatability error in Force Sensing Resistors
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).
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.