Dynamics and Control of Dual-Hoist Cranes Moving Triangular Payloads

2014 ◽  
Author(s):  
Alexander S. Miller ◽  
Padma Sarvepalli ◽  
William Singhose
Keyword(s):  
Dynamic Response ◽  
Dynamic Behavior ◽  
Bridge Crane ◽  
Response Characteristics ◽  
Dynamics And Control ◽  
System Configurations ◽  
And Control

Certain heavy-lifting applications require the coordinated movement of multiple cranes. Such tasks dramatically increase the complexity of crane operation, especially when the payload has a non-uniform shape. This paper studies the dynamic behavior of a dual-hoist bridge crane moving triangular payloads. Simulations and experiments are used to develop an understanding of the dynamic response of the system. Various inputs and system configurations are analyzed, and important response characteristics are highlighted.

Dynamic Response of a Dual-Hoist Bridge Crane

2013 ◽  
Author(s):  
Ehsan Maleki ◽  
William Singhose ◽  
Jeffrey Hawke ◽  
Joshua Vaughan
Keyword(s):  
Dynamic Response ◽  
Dynamic Behavior ◽  
Bridge Crane ◽  
Response Characteristics ◽  
Manufacturing Facilities ◽  
System Configurations

Cranes are used in manufacturing facilities, throughout nuclear sites, and in many other applications for various heavy-lifting purposes. Unfortunately, the flexible nature of cranes makes fast and precise motion of the payload challenging and dangerous. Certain applications require the coordinated movement of multiple cranes. Such tasks dramatically increase the complexity of the crane operation. This paper studies the dynamic behavior of a dual-hoist bridge crane. Simulations and experiments are used to develop an understanding of the dynamic response of the system. Various inputs and system configurations are analyzed and important response characteristics are highlighted.

From Research to Didactics: The Course of Dynamics and Control of Fluid Machines for Automation Engineering Students

2008 ◽  
Author(s):  
M. Venturini ◽  
M. Morini
Keyword(s):  
Dynamic Behavior ◽  
Engineering Students ◽  
Student Evaluation ◽  
Operating Conditions ◽  
Student Feedback ◽  
System Control ◽  
Control Logic ◽  
Dynamics And Control ◽  
The University ◽  
And Control

The paper deals with the course “Dynamics and Control of Fluid Machines”, which has been held at the Faculty of Engineering of the University of Ferrara (Italy) since the academic year 2002/2003 for the Second-Level Degree Course in Computer Sciences and Automation Engineering. The aim of the course is the study of fluid machines, by combining base knowledge with physical-mathematical analysis of the unsteady behavior and of off-design operating conditions. The first characteristic aspect of the course is the study of the dynamic behavior of fluid machines. The second relevant aspect is the analysis of system control. In this paper, course characteristics are presented and discussed. In particular, as a part of the final examination, students are asked to develop an individual project, whose results are also reported in this paper. The project consists of the simulation of the dynamic behavior of an industrial system for compressed air production by means of a multistage centrifugal compressor. Students are required to properly design the controller and to discuss the adopted control logic. Student feedback is evaluated by means of a survey conducted to evaluate the quality of the didactic activity. The analysis of student feedback reveals that student evaluation towards the course proves higher than the “average” evaluation for the didactic activity held at the University of Ferrara, at the Faculty of Engineering or within the same Degree Course.

Dynamics and control of three-dimensional dual cranes transporting a bulky payload

2020 ◽  
pp. 095440622094957
Author(s):  
Jie Huang ◽  
Kuo Zhu
Keyword(s):  
Dynamic Behavior ◽  
Nonlinear Model ◽  
Control Method ◽  
Three Dimensional ◽  
Structural Flexibility ◽  
Positioning Accuracy ◽  
Modeling And Control ◽  
Input Shaper ◽  
Dynamics And Control ◽  
And Control

The inevitable oscillations of the payload decrease the positioning accuracy and lessen the safety in dual cranes carrying a large payload. In the presence of the structural flexibility, the dynamics of dual cranes are governed by the payload swing, pitch, and twisting after considering three-dimensional motions. However, little research has been directed at the modeling and control of three-dimensional dual cranes. A dynamic model of three-dimensional dual cranes including the payload swing, pitch and twisting is described. Moreover, a combined modified extra-insensitive input shaper and four-pieces smoother method is proposed to control the swing, pitch, and twisting of the payload. The dynamic behavior of the nonlinear model and the effectiveness of the new control method are verified experimentally on dual cranes carrying a slender beam.

Dynamics and Control of an Adaptive Disk Suspension System Under Inertial Loading

1996 ◽  
Author(s):  
Li-Farn Yang ◽  
Rueih-Chir Tzeng ◽  
Chun-Pao Kuo
Keyword(s):  
Dynamic Behavior ◽  
Dynamic Testing ◽  
Feedforward Control ◽  
Suspension System ◽  
Structural Testing ◽  
Time Histories ◽  
Dynamics And Control ◽  
Inertial Loading ◽  
And Control ◽  
Adaptive Feedforward

Abstract A zero-stiffness suspension system featuring a noncircular disk is used as an application in counteracting gravity loads in ground-based structural testing. The dynamic behavior of this mechanism is analyzed in closed form, in which this mechanism is shown to be very sensitive to inertial properties of noncircular disk which can introduce inertial forces to trigger nonlinear dynamic behavior in the system, thereby degrading testing performance under such inertial loading. An adaptive feedforward control law is developed for eliminating these inertial effects upon the suspension system during dynamic testing. Under this control manipulation, the output signals of disk mechanism are regulated and tracked along the desired trajectories so that the error signals can vastly be reduced. Stability of the control system is investigated, and simulated-time histories of test articles under an active band-drive suspension system will also be presented to show the effectiveness of the present approach.

PROJECT ON ELECTRONIC STEERING SYSYTEM

2018 ◽  
Vol 4 (5) ◽  
pp. 7
Author(s):  
Shivam Dwivedi ◽  
Prof. Vikas Gupta
Keyword(s):  
Steering System ◽  
Essential Elements ◽  
Variable Pressure ◽  
Passenger Cars ◽  
Control Techniques ◽  
Steering Mechanism ◽  
Dynamics And Control ◽  
Active Research ◽  
Electronic Steering ◽  
And Control

As the four-wheel steering (4WS) system has great potentials, many researchers' attention was attracted to this technique and active research was made. As a result, passenger cars equipped with 4WS systems were put on the market a few years ago. This report tries to identify the essential elements of the 4WS technology in terms of vehicle dynamics and control techniques. Based on the findings of this investigation, the report gives a mechanism of electronically controlling the steering system depending on the variable pressure applied on it. This enhances the controlling and smoothens the operation of steering mechanism.

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