| Author: | Lee, Siu-wah |
| Title: | Residual vibration free maneuvering of overhead crane |
| Degree: | M.Sc. |
| Year: | 1997 |
| Subject: | Cranes, derricks, etc. -- Design and construction Hong Kong Polytechnic University -- Dissertations |
| Department: | Department of Mechanical Engineering Multi-disciplinary Studies |
| Pages: | vi, 126 p. : ill. (some col.) ; 30 cm |
| Language: | English |
| Abstract: | Overhead cranes are widely used to transport objects in many factories and work places. The fundamental motions are travel, transverse, object hoisting, and object lowering. Crane travel and transverse motions, especially when starting or stopping, induce undesirable swinging of the suspended object. This swing could, for example, cause the suspension ropes to leave their grooves which could lead to over-wrapping and possible serious damages. Current crane maneuvers are therefore performed slowly contributing to high construction and transportation costs. This investigation details a general method for applying command shaping to one degree of freedom cranes such that the payload moves to a specified point without residual oscillation. In order to suit the hardware requirement, parameter optimization method is used to generate command shaping for optimal maneuvers. The commands are linear combinations of acceleration pulse basis functions. The weights on the basis functions are chosen as the solution to a parameter optimization problem solved using a Recursive Programming Technique. Application of command shaping technique on one degree of freedom overhead crane system is verified by computer simulation and experimental result. |
| Rights: | All rights reserved |
| Access: | restricted access |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| b14201987.pdf | For All Users (off-campus access for PolyU Staff & Students only) | 4.53 MB | Adobe PDF | View/Open |
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