The predictive capability of two-dimensional (2-D) fully-nonlinear-potential-flow (FNPF) models of an experimental submerged moored sphere system subjected to waves is examined in this study. The experimental system considered includes both single-degree-of-freedom (SDOF) surge-only as well as two-degree-of-freedom (2DOF) surge-heave coupled motions, with main sources of nonlinearity from free ...

This paper presents the design, fabrication and analysis of two degrees freedom (2DOF) model gantry hybrid robots. The robotmechanism, comprising a series parallel component, provides vast range workspace accuracy. Pneumatic actuators are extensively utilized in industrial settings due to their low cost, compact size, high power-to-weight ratio, reliability. However, nonlinear dynamic character...

This paper deals with Feedback/Feedforward (FB/FF) control of a gantry crane system intended for the transport payloads that take values over known interval. It is also assumed affected by unmeasurable disturbances. A new 2DoF architecture proposed whose purpose to speed up horizontal payload transition while minimizing its oscillations. The main features design procedure are as follows: (1) ou...

This paper proposes a model-based two-degree-of-freedom (2DOF) speed control for medium voltage (MV) variable drive (VSD) connected to centrifugal compressor (CC) train. Torsional mode excitations in the shaft due converter switching behaviour are considered. An effective description of harmonics transfer is proposed. The tuning strategy aims optimize tracking step and ramp command, taking care...