EPE Association: EPE 2001 - Topic 07e: Applications

EPE 2001 - Topic 07e: Applications
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2001 - Conference > EPE 2001 - Topic 07: MOTION CONTROL AND ROBOTICS > EPE 2001 - Topic 07e: Applications

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   A Proposal of the Magnetic Levitation System with Two Desired Values
By G. Uchimido; M. Watada; S. Torii; D. Ebihara [View]
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Abstract: High quality and high efficiently transfer of the manufactual process are required with thin steel sheets of the thickness 0.3-1.2mili-meters that is in demand the highest in the steel industry. The thin steel sheets should be transported without cracks on the surface and the unevenness of lubricating oil in the field of producing steel-ware. The non-contact transportation of thin steel sheets by magnetic levitation is one of the solutions. It is proposed in this paper that the levitation system with two desired values to prevent transverse waves from propagating along the plate. A one-side support experiment of magnetic levitation system with two desired values and independent system is tested. The experiment result prove that compared with independent system, system with two desired values can control convergence of vibration early. The vibrations of various frequencies exist on a thin steel plate during surfacing. The examination to frequency of a thin steel plate is, therefore, required. In control system with two desired values and independent control system, it is necessary to get capability that can control vibration over the frequency of the vibration on a thin steel plate. An output vibration amplitude /an input vibration amplitude (following: amplitude ratio) is a parameter of the vibration control effect. The experiment result shows the amplitude ratio is high when the frequency of the thin steel plate is high, in both cases. PID controls order these electromagnets current. The system with two desired values can set up a differentiation gain highly, therefore, vibration can be controlled rather than the independent system. The progressive wave and the reflected wave from a free end side generate standing wave. The system with two desired values can control progressive wave. The experiment prove the system with two desired values can control progressive wave more rather than the independent system on the frequency of the ranges from 3 to 72 hertz. These experiments prove the system with two desired values is more effective than the independent system.

   Flexible Structure´s Identification and Robust Vibration Suppression
By A. Forrai; S. Hashimoto; H. Funato; K. Kamiyama [View]
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Abstract: The paper deals with active vibration suppression control of flexible structures considering a robust control perspective. The considered experimantal set-up is a three-storey flexible structure with an active mass-driver placed on the last storey. First, the considered flexible structure is identified and the model's parametric uncertainties are deduced. Next, control constraints are presented for the robust control design problem. Finally, the effectiveness of the control system is tested through experiments, when the input disturbance is assumed to be a sinusoidal one as well as a historical earthquake record (1940 El Centro record).

   Investigation Of Mechatronic System
By E.A. Lomonova; K.O.Boinov; J.B. Klaassens; A. El Azzouzi [View]
[Download]

Abstract: The paper discusses a comprehensive mechanical, electromechanical, electromagnetic and control design approaches leading to the system integration and redesign solutions of the high-performance crane mechatronic system. The advanced analytical and numerical solutions are obtained during solving a spectrum of energy conversion, control problems for the investigated system which integrates electromechanical motion devices (the electrical actuators - switched reluctance motor (SRM) and linear induction motor (LIM)), no-linear mechanical load (skewing container), and control systems. The combination of finite element method and machine circuit equations is applied for the electrical drive design and steady-state performance prediction with the aim to obtain the optimal electromagnetic parameters and improve the output efficiency. The finite element models are implemented in Maxwell 2D through the intermediate models in RMxprt (Ansoft Co). Further, the parametric post-processing verification is provided for the different electromagnetic constraints. Finally the created toolboxes for electrical drives, linear and non-linear models of mechanical load, control system are applied for multilevel-modeling approach of the crane mechatronic system. The non-linear and linearized governed equations of a skewing container present the dynamic models of the mechanical load. Analytical solutions of the motion equations based on a Lagrangian approach are obtained with Maple V software and further implemented into Matlab-Simulink models. The particular emphasis is given to linking the model of the skewing container with the models of the SRM and LIM using the principle of energy balance. The simulated dynamic responses of the skewing container with feedback control systems are proposed for the implementation at the physical scale prototype.

EPE 2001 - Topic 07e: Applications
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2001 - Conference > EPE 2001 - Topic 07: MOTION CONTROL AND ROBOTICS > EPE 2001 - Topic 07e: Applications
	[return to parent folder]

	A Proposal of the Magnetic Levitation System with Two Desired Values By G. Uchimido; M. Watada; S. Torii; D. Ebihara	[View] [Download]
Abstract: High quality and high efficiently transfer of the manufactual process are required with thin steel sheets of the thickness 0.3-1.2mili-meters that is in demand the highest in the steel industry. The thin steel sheets should be transported without cracks on the surface and the unevenness of lubricating oil in the field of producing steel-ware. The non-contact transportation of thin steel sheets by magnetic levitation is one of the solutions. It is proposed in this paper that the levitation system with two desired values to prevent transverse waves from propagating along the plate. A one-side support experiment of magnetic levitation system with two desired values and independent system is tested. The experiment result prove that compared with independent system, system with two desired values can control convergence of vibration early. The vibrations of various frequencies exist on a thin steel plate during surfacing. The examination to frequency of a thin steel plate is, therefore, required. In control system with two desired values and independent control system, it is necessary to get capability that can control vibration over the frequency of the vibration on a thin steel plate. An output vibration amplitude /an input vibration amplitude (following: amplitude ratio) is a parameter of the vibration control effect. The experiment result shows the amplitude ratio is high when the frequency of the thin steel plate is high, in both cases. PID controls order these electromagnets current. The system with two desired values can set up a differentiation gain highly, therefore, vibration can be controlled rather than the independent system. The progressive wave and the reflected wave from a free end side generate standing wave. The system with two desired values can control progressive wave. The experiment prove the system with two desired values can control progressive wave more rather than the independent system on the frequency of the ranges from 3 to 72 hertz. These experiments prove the system with two desired values is more effective than the independent system.

	Flexible Structure´s Identification and Robust Vibration Suppression By A. Forrai; S. Hashimoto; H. Funato; K. Kamiyama	[View] [Download]
Abstract: The paper deals with active vibration suppression control of flexible structures considering a robust control perspective. The considered experimantal set-up is a three-storey flexible structure with an active mass-driver placed on the last storey. First, the considered flexible structure is identified and the model's parametric uncertainties are deduced. Next, control constraints are presented for the robust control design problem. Finally, the effectiveness of the control system is tested through experiments, when the input disturbance is assumed to be a sinusoidal one as well as a historical earthquake record (1940 El Centro record).

	Investigation Of Mechatronic System By E.A. Lomonova; K.O.Boinov; J.B. Klaassens; A. El Azzouzi	[View] [Download]
Abstract: The paper discusses a comprehensive mechanical, electromechanical, electromagnetic and control design approaches leading to the system integration and redesign solutions of the high-performance crane mechatronic system. The advanced analytical and numerical solutions are obtained during solving a spectrum of energy conversion, control problems for the investigated system which integrates electromechanical motion devices (the electrical actuators - switched reluctance motor (SRM) and linear induction motor (LIM)), no-linear mechanical load (skewing container), and control systems. The combination of finite element method and machine circuit equations is applied for the electrical drive design and steady-state performance prediction with the aim to obtain the optimal electromagnetic parameters and improve the output efficiency. The finite element models are implemented in Maxwell 2D through the intermediate models in RMxprt (Ansoft Co). Further, the parametric post-processing verification is provided for the different electromagnetic constraints. Finally the created toolboxes for electrical drives, linear and non-linear models of mechanical load, control system are applied for multilevel-modeling approach of the crane mechatronic system. The non-linear and linearized governed equations of a skewing container present the dynamic models of the mechanical load. Analytical solutions of the motion equations based on a Lagrangian approach are obtained with Maple V software and further implemented into Matlab-Simulink models. The particular emphasis is given to linking the model of the skewing container with the models of the SRM and LIM using the principle of energy balance. The simulated dynamic responses of the skewing container with feedback control systems are proposed for the implementation at the physical scale prototype.