Anti-swing control can automatically eliminate the swing generated by the lifting during operation, and can complete the transfer of the lifting faster, especially the automatic driving with positioning function. The anti-swing system can make the operation of the driving more efficient and safer.

On the premise of ensuring the working efficiency of the bridge crane, it is of great significance to prevent the swing of the load for the bridge crane.

Swing generation

In the process of acceleration and deceleration, the movement of the lifting always lags behind the movement of the driving, thus forming an Angle between the driving and the lifting. Under the action of gravity, the lifting will form a phenomenon of swaying back and forth.

Intelligent driving anti-swing method

The main anti-swing methods of driving include mechanical anti-swing and electrical control anti-swing. Mechanical anti-swing requires increased mechanical equipment resulting in increased driving weight and expensive cost, so it is rarely used.

Electrical control can be divided into closed-loop control and open-loop control. Closed-loop control requires swing Angle measurement device and control algorithm. Open-loop control does not need the Angle measuring device, and can realize the anti-swing control through the control algorithm, so it is also the most widely used anti-swing method at present.

Open-loop control

When the vehicle is running at a certain acceleration, the load will swing with a certain swing period (T), and the swing formed by the load will be eliminated after applying a short pulse of equal time at half the swing period (T/2). This control algorithm does not need Angle measuring device and belongs to open-loop control.

Closed loop control

The advantage of closed-loop control is that it gives full play to the important effect of the reaction, eliminates the unpredictable or uncertain elements, and makes the proofreading action more accurate and more powerful. But it lacks the preventative nature of open-loop control. Generally widely used in the external environment requirements are relatively high, high-precision occasions.

With the development of technology, the anti-swing system with camera is also gradually applied in the anti-swing system, he detects the actual swing Angle by detecting the displacement of the reflector, which can correct the swing caused by the movement of the crane itself, and can also correct the swing caused by external force.