Systems and methods for dampening torsional oscillations of cranes

A system that dampens torsional oscillation of an object that rotates in a horizontal plane, the system comprising:

• a motor that is configured to rotate the object in the horizontal plane;
• a motor control that is operably coupled to the motor and is configured to control the motor based on at least one input;
• and
• an electronic module that is communicatively coupled to the motor control, the electronic module comprises:
• a housing;
• a memory that is disposed within the housing and is configured to store a mass-dependent value of the object or of rotating parts of the system rotating in the horizontal plane;
• and
• a processor that is disposed within the housing, the processor being configured to:
• receive the mass-dependent value of the object or of the rotating parts of the system,
• store the mass-dependent value of the object or of the rotating parts of the system in the memory,
• calculate a torsional oscillation dampening signal using an algorithm that is based at least in part on the received mass-dependent value of the object or of the rotating parts of the system, and
• transmit the torsional oscillation dampening signal to the motor control causing the motor control to operate the motor based on the torsional oscillation dampening signal thereby dampening torsional oscillation of the object rotating in the horizontal plane.

A system that dampens torsional oscillation of an object that rotates in a horizontal plane, the system comprising:

• a securement mechanism that is configured to suspend the object in the horizontal plane;
• a motor that is operably coupled to the securement mechanism such that, when the motor acts on the securement mechanism, the object rotates in the horizontal plane;
• and
• an electronic module that is communicatively coupled to the motor control and comprises:
• a motor control that is operably coupled to the motor and is configured to operate the motor based on at least one input
• a memory that is disposed within the housing and is configured to store a mass-dependent value of the object;
• and
• a processor that is disposed within the housing and is configured to:
• receive the mass-dependent value of the object and store the mass-dependent value of the object in the memory,
• calculate a torsional oscillation dampening signal using an algorithm that is based at least in part on the mass-dependent value of the object, and
• transmit the torsional oscillation dampening signal to the motor control;
• wherein, when the motor control executes the torsional oscillation dampening signal, the motor control dampens torsional oscillation of the object rotating in the horizontal plane.

A method for dampening torsional oscillation of a suspended object that rotates in a horizontal plane in a system that includes a motor control, the method comprising:

• providing a memory having a memory capacity, a portion of the memory capacity including a mass-dependent value of the object or of rotating parts of the system and an algorithm that calculates a torsional oscillation dampening signal using the mass-dependent value, and a processor that is configured to store and retrieve the mass-dependent value and the algorithm from the memory;
• receiving, at the processor, a command signal from an input/output (IO) device;
• retrieving, via the processor, the mass-dependent value and the algorithm from the memory in response to receiving the command signal from the IO device;
• calculating, via the processor, the torsional oscillation dampening signal as a function of the stored mass-dependent value using the algorithm;
• transmitting the calculated torsional oscillation dampening signal to the motor control;
• and
• operating the motor, via the motor control, based at least in part on the calculated torsional oscillation dampening signal thereby dampening torsional oscillation of the object in the horizontal plane.