scholarly journals Design and Control of a Magnetically Suspended Ceiling Actuator with Infinite Planar Stroke

2013 ◽  
Vol 416-417 ◽  
pp. 492-502 ◽  
Author(s):  
T.T. Overboom ◽  
J.P.C. Smeets ◽  
J.W. Jansen ◽  
E.A. Lomonova
Keyword(s):  
Permanent Magnet ◽  
Analytical Model ◽  
Normal Force ◽  
Tracking Error ◽  
Fe Model ◽  
Optimized Design ◽  
Three Phase ◽  
Linear Actuators ◽  
And Control ◽  
Infinite Planar

This paper presents the design and control of a magnetically suspended ceiling actuator which combines four iron-cored linear actuators and a checkerboard permanent magnet array for an infinite planar stroke. When the actuators are rotated with respect to the PM array, it is shown that the thrust and normal force produced by the three-phase linear actuators can be controlled by applying Park's transformation. The design of the iron-cored linear actuators is optimized for minimum losses when the translator inside the ceiling actuator and a payload are accelerated in the xy-plane. The optimization is performed using an analytical model is. Simulations of the optimized design with a 3D FE-model, show a maximum tracking error of 1 μm and rotations of 30 μrad when the translator is moved and controlled in 6 DOF.

Modeling and Control of a Dual Three-Phase Permanent Magnet Machine Accounting for Asymmetry between Two Winding Sets

2020 ◽  
Author(s):  
Mingjin Hu ◽  
Wei Hua ◽  
Hengliang Zhang ◽  
Guishu Zhao ◽  
Guangtong Ma ◽  
...  
Keyword(s):  
Permanent Magnet ◽  
Permanent Magnet Machine ◽  
Modeling And Control ◽  
Three Phase ◽  
And Control

A novel permanent magnet bias hybrid thrust magnetic bearing with extremely simple structure for high-speed rotating machinery

2021 ◽  
pp. 095440622110483
Author(s):  
Haoze Wang ◽  
Zhigang Wu ◽  
Kun Liu ◽  
Jingbo Wei ◽  
Hongjing Hu
Keyword(s):  
Permanent Magnet ◽  
Analytical Model ◽  
High Speed ◽  
Magnetic Force ◽  
Simple Structure ◽  
Magnetic Bearing ◽  
Rotating Machinery ◽  
Structure Complexity ◽  
And Control ◽  
Thrust Magnetic Bearing

This paper presents a novel permanent magnet (PM) bias hybrid thrust magnetic bearing (HTMB), which can be used to replace the traditional thrust magnetic bearings (TMBs) for high-speed rotating machinery. By adding two PM rings and by reducing the number of the control coils by half, this HTMB eliminates the bias current, reduces the number of amplifiers, and minimizes the magnetic bearing’s structure complexity and power consumption. The analytical modelling method of the HTMB is presented in this paper. Mathematical models for calculating the magnetic force capacity and the stiffnesses of this bearing are derived as simplified formulae, which can be used for the design, analysis, and control of this bearing. Electromechanical characteristics of the HTMB are analyzed, which is compared to the traditional TMB to demonstrate the advantages of the HTMB. The prototype of the HTMB is designed, analyzed, and fabricated, whereas, the 2-D FEM is used to verify the design and the analytical model. Finally, an experimental setup is constructed and tested. The analytical and experimental results indicate that the proposed novel topology of this HTMB is feasible and the presented analytical model is accurate.

scholarly journals DESIGN AND REALIZATION OF GRIPPERS WITH PERMANENT MAGNETS

2019 ◽  
pp. 105-110
Author(s):  
Peter Tuleja
Keyword(s):  
Permanent Magnet ◽  
Permanent Magnets ◽  
Educational Process ◽  
Practical Implementation ◽  
Optimized Design ◽  
Target Setting ◽  
Educational Activities ◽  
Acquisition Costs ◽  
Gripping Force ◽  
And Control

Urgency of the research. Modern production requires simple and inexpensive component solutions for gripping large parts. The design of gripping elements using a permanent magnet in this aspect is a promising direction. Target setting. The aim of the project was to realize a gripping component from a commercially available pneumatic drive supplemented with a neodymium permanent magnet and to revive the resulting assembly with a pneumatic portal manipulation device designed for educational activities at the department. Actual scientific researches and issues analysis. Implementation of the project required a detailed market research focused on the tentacles of a similar concept and the study of the principles and properties of permanent magnets. By analyzing the information the project objective was optimized - design of cheap and reliable gripping element. Uninvestigated parts of general matters defining. Available components were used for the resulting solution, with an emphasis on low acquisition costs. This was due to the fact that the output was intended for laboratory use. The research objective. The aim of the research was to build a real functioning and reliably working gripping device usable as an object for educational activities in the education of our students. The statement of basic materials. Design and practical implementation of the grippers with permanent magnets for gripping parts represented in the work. Activation and control of the grips is implemented by compressed air. The implementation of the output confirmed the correctness of considerations as well as the feasibility of the repeatability of this output while meeting the basic requirement for low costs. The project was based on the principles offered by leading companies, but the implementation output gives a higher gripping force at lower input costs. In addition, it provides the possibility of extension to the size range according to customer requirements. Conclusions. The project was successful and its implementation also contributed to the improvement of the educational process at the department, which was one of the monitored benefits. It provides an illustrative demonstration of the possibilities of performing manipulation tasks with non-standard objects.

Optimal Stator Design to Improve the Output Voltage of the Novel Three-Phase Doubly Salient Permanent Magnet Generator

2020 ◽  
Vol 8 (4) ◽  
pp. 118
Author(s):  
Vannakone Lounthavong ◽  
Warat Sriwannarat ◽  
Pattasad Seangwong ◽  
Apirat Siritaratiwat ◽  
Pirat Khunkitti
Keyword(s):  
Permanent Magnet ◽  
Output Voltage ◽  
The Novel ◽  
Three Phase ◽  
Doubly Salient ◽  
Stator Design ◽  
Permanent Magnet Generator

The Analytical Model of a Slotless Switched Permanent Magnet Motor

2018 ◽  
pp. 48-56
Author(s):  
Aleksandr A. AFANAS’YEV ◽  
◽  
Dmitrii A. TOKMAKOV ◽  
Kong Tam NGUYEN ◽  
◽  
...  
Keyword(s):  
Permanent Magnet ◽  
Analytical Model ◽  
Permanent Magnet Motor
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