Motivated by the increasing concerns over environmental challenges such as global
warming and exhaustion of fossil-fuel reserves, the renewable energy industry has become …

To avoid complicated force control system in precision manipulation, compliant constant
force/torque mechanisms are proposed and developed continuously since the 1990s. The …

In this research, electrically performance, vibration/resonance characteristics, low-velocity
impact, and absorbed energy of the piezoelectric doubly curved panel on the viscoelastic …

The magnetic shape memory alloy based actuator (MSMA-BA) is an indispensable
component mechanism for high-precision positioning systems as it possesses the …

Precise actuation is a widely utilized technology in the realm of high-end equipment.
Piezoelectric actuators (PEAs) stand out due to their exceptional attributes, including high …

Hysteresis is an inherent characteristic of piezoelectric materials that can be determined by
not only the historical input but also the input signal frequency. Hysteresis severely …

For precision motion systems widely applied in industrial manufacturing equipments, it is
critical to achieve both high trajectory tracking accuracy and superior disturbance rejection …

With the development of micro-electromechanical systems, high precision actuators with
high resolution, fast speed, large load capacity are increasingly required. Thanks to the …

Uncertain dynamics and unknown time-varying disturbances always exist in servo systems
and deteriorate tracking accuracy significantly. To tackle the problem, this paper presents a …

This study developed a local fixed-time sliding mode control (FTSMC) method based on a
novel adaptive disturbance observer (NADOB) dedicated to motion tracking control for piezo …