Smart grids have been constructed so as to guarantee the security and stability of the power grid in recent years. Power transformers are a most vital component in the complicated smart grid network. Any transformer failure can cause damage of the whole power system, within which the failures caused by overloading cannot be ignored. This research gives a new insight into overload capability ass...

We propose FMJ (Featherweight Multi Java), an extension of Featherweight Java with encapsulated multi-methods thus providing dynamic overloading. Multi-methods (collections of overloaded methods associated to the same message, whose selection takes place dynamically instead of statically as in standard overloading) are a useful and flexible mechanism which enhances re-usability and separation o...

Mobile cranes have been used extensively as essential equipment at construction sites. The productivity improvement of the mobile crane affects overall project. Hence, various studies conducted regarding operation planning. However, on solving RCP (the repositioning problem) are insufficient. This article presents a reposition route planning optimization method (RPOS) that minimizes total opera...

Zusammenfassung In this paper we extend our Java with type inference by adding methods. Functions had been realized as lambda expressions defined in fields until now, which led to the restrictions that no overloading is available. Therefore the main challenge of adding methods is to deal with overloading. We present the change of the data-structures and the algorithm.

When suspended payloads are moved with an overhead crane, pendulum like oscillations are naturally introduced. This presents a problem any time a crane is used, especially when expensive and/or delicate objects are moved, when moving in a cluttered and/or hazardous environment, and when objects are to be placed in tight locations. For example, one nuclear waste-handling operation examined by th...

THIS DUAL biographical essay concerns two outstanding men of the seventeenth century, an Englishman and a Scotsman. They made their reputations in very different walks of life and in different countries. Both were proteges of royalty; Sir Francis Crane of James I and Charles I, and William Davison of Charles I and Queen Henrietta Maria, as well as of the kings of France and Poland, to whom he w...

gantry crane system becomes an interesting issue in the field of control technology development. In this paper, dynamic model of gantry crane is extracted using Lagrange method. This model has been linearized and weaknesses of state feedback control of this model is reviewed. To solve these problems, state feedback gain matrix is calculated using LQR method and results are fully investigated. F...

A control strategy is presented for a 3-dimensional overhead crane. Using the differential flatness of the crane and a parameterization method, we calculate the optimal trajectory of the payload that results in minimum transfer time when there exist obstacles in the direct moving path. A learning algorithm is then used to generate the desired feedforward input signal that can drive the system o...

Two control problems related to a particular underactuated mechanical system, the reduced size US Navy crane, are addressed. The open-loop motion planning problem is solved by showing that the model of the crane is differentially flat with a flat output comprising the coordinates of the load as its first components. The closed-loop global asymptotic stabilization of equilibria is achieved using...