BOUNDARY CONTROL OF CONTAINER CRANES AS AN AXIALLY MOVING STRING SYSTEM
نویسندگان
چکیده
منابع مشابه
Boundary Control of Container Cranes as an Axially Moving String System
The control objectives in this paper are to move the gantry of a container crane to its target position and to suppress the transverse vibration of the payload. The crane system is modeled as an axially moving string equation, in which control inputs are applied at both ends, through the gantry and the payload. The dynamics of the moving string are derived using Hamilton’s principle for systems...
متن کاملVibration Control of an Axially Moving String by Boundary Control*
The stabilization of the transverse vibration of an axially moving string is implemented using time-varying control of either the boundary transverse motion or the external boundary forces. The total mechanical energy of the translating string is a Lyapunov functional and boundary control laws are designed to dissipate the total vibration energy of the string at the left and/or right boundary. ...
متن کاملRobust Boundary Control of an Axially Moving Steel Strip
In this paper, a robust vibration control scheme of the axially moving steel strip in the zinc galvanizing line is considered. The boundary control force is applied to the strip through the two touch rolls connected to a hydraulic actuator. The mathematical model of the system, which consists of a partial differential equation describing the dynamics of the traveling steel strip and an ordinary...
متن کاملHybrid control of container cranes
Hybrid cranes use ultracapacitors to store energy that is regenerated when lowering a container or during braking, and reuses this energy to assist the engine later on. A hybrid crane needs a system that optimizes the fuel cost by controlling in real time the two available power sources. Currently, the crane uses a rule-based heuristic strategy, which does not achieve optimal results and is dif...
متن کاملVibration control of an axially moving string system: Wave cancellation method
Active vibration control is investigated for axially moving strings with a tersioner. The tensioner is used as an actuator. The active control law is proposed from the view of the traveling wave propagation. Transverse response of both the uncontrolled and the controlled systems is derived in the frequency domain. The designed controller is numerically tested for the string under impulse and ha...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: IFAC Proceedings Volumes
سال: 2005
ISSN: 1474-6670
DOI: 10.3182/20050703-6-cz-1902.02045