The paper investigates a nonlinear vibration mitigation strategy of a variable length
pendulum subjected to a harmonic external excitation. A nonlinear absorber in a form of a tri …

An underactuated tower crane exhibits a significant payload sway especially under three
simultaneous motions involving trolley displacement, jib rotation and payload hoisting. This …

This paper presents a new control scheme based on model reference command shaping
(MRCS) for an overhead crane, with double-pendulum mechanism effects. The approach …

Patients suffering from motor disorders or weakness resulting from either serious spinal cord
injury or stroke often require rehabilitation therapy to regain their mobility. In the lower limbs …

In this work, the real-time optimal trajectory planning, together with a cascaded tracking
controller, is presented for a three-dimensional (3D) gantry crane in an environment with …

Specific payload shape and hoisting mechanism will transform the crane to a complex
double pendulum system with a distributed mass beams (DMB), which makes its control …

A new model-free robust control scheme for payload swing angle attenuation of two-
dimensional crane systems with varying rope length is introduced in this work. The proposed …

In this article, two boundary feedback controllers are designed via the backstepping
approach for a class of gantry crane systems. To provide an accurate and concise …

This paper develops a novel Lyapunov function candidate for control of the three-
dimensional (3-D) overhead crane, which yields a nonlinear controller to inject active …

To date, most control strategies have been designed for the two-dimensional and three-
dimensional overhead crane systems with the single pendulum effect. In fact, three …