Simplified open-loop anti-sway technique

Antisway controllers present in today´s market are built around complex technologies. Such technology, for implementation, demands presence of high-end computers, sway sensors, and servo performance drives in the crane electrics. Cost and computational demands for implementation of such controllers makes them unsuitable for use with rail mounted gantry cranes equipped with low-end programmable logic controllers (PLCs) and adjustable speed drives (ASDs). In this paper we had discussed about the theory for open-loop antisway technique. Presented technique is computationally less demanding and does not require fixture of any sway sensor. The discussed technique works well with gantry cranes deploying low-end PLCs with ASDs.