Nonsingular Fast Terminal Sliding Mode Control with Extended State Observer and Disturbance Compensation for Position Tracking of Electric Cylinder

Table 1

System model components parameters.

Parameters	Value
Ball screw thread diameter	9.5 mm
Thread lead	5.08 mm
Ball screw static friction coefficient	0.3
Ball screw Coulomb friction coefficient	0.15
Contact stiffness of ball screw	1×
Stribeck friction coefficient	0.06 m/s
Screw mass	0.17 kg
Moment of inertia of rotating load
Viscous friction coefficient of rotating load
Disturbance torque	Nm
Step	0.005 ms