Case A
If a displacement-dependent force F is being checked for compliance with the limit values, an offset of the force from stroke to stroke is disruptive. The force limit values would have to be adjusted for each stroke movement.
Force-displacement-measurement with relative zero point
The force F and displacement s during a stroke movement are measured. To compensate for random offsets in measurands, new, signals F_tared and s_tared are generated without offset.
Case A
The force is set to zero at point s on the displacement axis: s=s0.
Case B
Force and displacement are set to zero for force F=F0
These examples are simply for the purpose of illustration. They cannot be used as the basis for any warranty or liability claims.