Port equipment crane heavy load hoisting positioning control device and control method thereof
By integrating a laser rangefinder, incremental photoelectric encoder, and dual-axis tilt sensor into a port crane, the travel motor is controlled by real-time calculation and compensation acceleration. This solves the problem of difficult-to-control swing of suspended loads, achieves precise positioning and stability of heavy loads, and reduces equipment complexity and computational burden.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- SHANDONG LUHAI EQUIPMENT GROUP QINGDAO CO LTD
- Filing Date
- 2026-06-16
- Publication Date
- 2026-07-17
AI Technical Summary
In the current technology for heavy-duty lifting operations by port cranes, it is difficult to precisely control the swing of the suspended load, resulting in unstable positioning and increased equipment complexity and computational burden. It is also unable to adapt to the dynamic changes in the winding and unwinding of the wire rope on the hoisting drum.
By combining a laser rangefinder, incremental photoelectric encoder, and dual-axis tilt sensor with a frequency converter, the absolute position, drum rotation angle, and hook swing angle are measured in real time. The travel motor is controlled by calculating the compensation acceleration to achieve anti-sway compensation, thus avoiding reliance on complex nonlinear observers.
It improves the stability of heavy-load positioning of cranes, reduces the complexity of equipment structure and the computational burden of controller, reduces repeated jogging operations at the positioning end, and improves positioning accuracy and efficiency.
Smart Images
Figure CN122403283A_ABST