This article proposes a non-smooth funnel control (NSFC) strategy based on the extended
state observer (ESO) for motor-drive servo systems with unknown dynamics. These …

In this paper, an approximation-free funnel feedback controller is proposed for a class of
nonlinear servomechanisms to achieve prescribed tracking error performance. An improved …

In this paper, an unknown input observer is proposed for servomechanisms with unknown
dynamics (eg, nonlinear friction, parameter uncertainties, and external disturbance). An …

Inertia load change, torque disturbance, and sophisticated mechanical nonlinearity impose
great challenge on the high-precision control design of motor servo systems. To achieve …

In this paper, a finite-time neural funnel control (FTNFC) scheme is proposed for motor servo
systems with unknown input constraint. To deal with the non-smooth input saturation …

A finite-time tracking control scheme is proposed in this paper based on the terminal sliding
mode principle for motor servo systems with unknown nonlinear dead-zone inputs. By using …

In this article, a velocity-free adaptive controller is proposed for the tracking control of servo
mechanisms with friction compensation. A continuously differentiable friction model is …

The problem of finite-time trajectory tracking control is researched for uncertain nonlinear
mechanical systems. The non-singular terminal sliding mode controller based on extended …

To handle the state estimation of a nonlinear system perturbed by a scalar disturbance
distributed by a known nonlinear vector, a sliding-mode term is incorporated into the …

This paper proposes an adaptive funnel control (FC) scheme for servo mechanisms with an
unknown dead-zone. To improve the transient and steady-state performance, a modified …