Method to optimize an anti-sway function

An apparatus for optimizing a model used in real time by an antisway function for the transport of a load by a hoisting appliance spanning a hoisting area and comprising a gantry and a trolley able to transport the load suspended to a hoist mechanism hosted in the trolley, wherein, when transported, the load presents a primary sway, the model comprising a model curve representing the theorical primary sway of the load over time, the apparatus comprising:

• one or more network interfaces to communicate with a telecommunication network;
• a processor coupled to the network interfaces and configured to execute one or more processes;
• and
• a memory configured to store a process executable by the processor, the process when executed operable to:
• retrieving measurements of angles of the load with respect to the trolley to produce a measurement curve representing a primary sway of the load,
• applying a first filter to the measurement curve to obtain a first filtered measurement curve,
• calculating a first difference of time between the model curve and the first filtered measurement curve,
• applying a second filter to the first measurement curve to obtain a second filtered measurement curve,
• calculating a second difference of a maximum angle amplitude between the model curve and the second filtered measurement curve,
• synchronizing the model based on the first calculated difference or the second calculated difference.