Container terminals (CTs) play an important role in the modern logistics and transportation industry. The utilization of automated guided vehicles (AGVs) can be effectively facilitated by reducing their empty running. existing strategies cannot guarantee full load AGVs during because complex constraints container scheduling. This work proposes a double-cycling AGV scheduling model that ensures ...

In the Multi-Spreader Crane Scheduling Problem (MSCSP), containers with identical dimensions but variable weights are arranged along a grid. A multi-spreader crane is used to lift all containers. The has m > 1 modes. When it in p th mode, can remove adjacent same row at time as long total weight of does not exceed loading capacity ? . Such takes h minutes. It also c , q minutes for switch from ...

Rail mounted gantry crane (RMGC) scheduling is important in reducing makespan of handling operation and improving container handling efficiency. In this paper, we present an RMGC scheduling optimization model, whose objective is to determine an optimization handling sequence in order to minimize RMGC idle load time in handling tasks. An ant colony optimization is proposed to obtain near optimal...

In this work, we study the integrated berth and crane scheduling problem in a tidal port with multiple terminals, considering uncertainties, tides, maximum coverage of cranes interference between cranes. For coping certain number randomly generated samples are used to evaluate solutions, slack variables introduced reduce impact caused by variation vessel arrival operational efficiency. A novel ...

Satisfactory real time control of the overhead crane facilitating fast transit (< 3s) and minimal swing (< 4°) was achieved in the x, y and z directions. Control was achieved in each individual direction using experimental modelling techniques, careful sampling frequency selection, NMSS representation and LQR controller design. To overcome non-linear model variation, a gain scheduling algorithm...

Abstract Background In 2017, smaller container ports handled approximately 22% of total containerized cargo. Nowadays liner operators are calling on those with larger ships and demanding fast efficient turnaround the in port. This is possible only if berth has right capacities, working properly achieves a good productivity level. Methodology Productivity level does not depend quay crane capacit...