Portal crane is one of the important equipment bulk terminal, which specially used for shore loading and unloading operation. It mainly consumes electric energy. In order to clarify utilization energy during operation portal analyze efficiency, a terminal was selected as research object tested. The voltage, current, imbalance, harmonic, power efficiency were analyzed in his paper. Some suggesti...

Abstract The scheduling of gantry cranes with respect to mutual interference has received considerable attention in recent years. We consider a subproblem which arises when each crane sequence tasks be assigned. problem is concerned resolving the between two by determining avoids other order let it complete its next task first. provide fairly general framework accounting for different systems a...

The Layout of the Field Stacking containers is an important thing to consider because it can affect effectiveness loading and unloading process in field by arranging facilities stacking Yard including Rubber Gantry Crane (RTG) arrangement lane Head Truck. So, necessary research determining containers. design that will be made distance head truck travels transport from dock. In several studies, ...

Precise payload positioning by an overhead crane is difficult due to the fact that the payload can exhibit a pendulum-like swinging motion. The stabilization of loads that are carried by cranes is tedious, and the lack of truly efficient control strategies implies a large economical loss due to the additional time involved in the process. From a control theoretical point of view, cranes are und...

Hệ cần trục 2D hay “gantry crane” là hệ một vào nhiều ra (SIMO-single input multi output) được sử dụng trong cả thực tế và học thuật. Với thống không có thông số mô hình cụ thể như đối tượng này, nhóm tác giả tiến hành xây dựng áp giải thuật điều khiển mờ pháp khả dĩ cho chưa rõ cấu trúc SIMO. Bên cạnh việc phân tích vì sao bộ (BĐK) phù hợp này so với các BĐK khác, cũng chứng minh tính thi của ...

The integrated allocation and scheduling of handling resources are crucial problems in the railway container terminal (RCT). We investigate optimization problem for crane area, dual-gantry (GC), internal trucks (ITs). A creative scheme is proposed to reduce long-distance, full-loaded movement GCs by making use advantages ITs. Based on this scheme, we propose a flexible crossing area balance wor...

In this paper controlled electrical drives for Rail Mounted Wide Span Gantry Cranes are analyzed. The modern solution considers the application of frequency converters for all drives. Special attention is payed to multi-motor drives of horizontal movement in the sense of load distribution. Although it can be considered that motors are rigid coupled by mechanical construction, they do not need a...