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Bridge type grab ship unloader automatic control system

Author: LiuYing
Tutor: YanWenJun
School: Zhejiang University
Course: Control Theory and Control Engineering
Keywords: Bridge type grab ship unloader Horizontal running Optimal Control Grab anti-sway Butt ADAMS
CLC: U653.928.1
Type: Master's thesis
Year: 2008
Downloads: 113
Quote: 0
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Abstract


With the development of automatic control technology , bridge type grab ship unloader gradually by long-term in the era of manually entering the semi-automatic control or automatic control era . This is a typical case of the successful application of an automatic control technology , it helps the driver freed from the high - intensity work , give full play to the various types of sensors , the modern PLC controller and the direct torque control drive superior performance and guarantee unloading ship process safety under the premise of the the expensive bridge type grab ship unloader efficiency greatly improved, allowing users to get higher benefits . Grab ship unloader automation process mainly encountered two major problems for grabs anti-sway and grab obstacle avoidance . The key is to grab anti-sway of the car - grab systematic theoretical analysis . Grab force of the ship unloader analysis to establish the mathematical model of the relationship level of shipunloader car running and grab swing . The optimal time for both fixed distance control and grab the anti-sway control , raised the level of two ship unloaders car running way . Mechanical system dynamics and kinematics simulation software ADAMS confirmed , the two operation modes can effectively inhibit grab swing . In order to further improve the unloader efficiency , and propose a grab butt discharge method , and can be effectively combined with the above two shipunloader car level run way . Grab obstacle avoidance problems you must seize the main contradiction of the problem , the high degree of elaboration of the two security can better solve the problem simplified . This paper provides the control method has been validated in Beilun Power Plant 400t / h limestone bridge type grab ship unloader , a good performance in the security , time optimization and grab the anti-sway . Meanwhile , the paper also describes the system of auxiliary facilities, and design ideas , they can make the system is really put into operation .

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CLC: > Transportation > Waterway transport > Port projects > Port Construction and Equipment > Transfer and handling equipment > Dedicated loading and unloading machinery > Ship loader , ship unloader
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