3 edition of Research related to multi degree of freedom magnetic suspensions found in the catalog.
Research related to multi degree of freedom magnetic suspensions
by National Aeronautics and Space Administration, National Technical Information Service, distributor in [Washington, DC, Springfield, Va
Written in English
|Statement||by Yan Yang.|
|Series||NASA contractor report -- NASA CR-205208.|
|Contributions||United States. National Aeronautics and Space Administration.|
|The Physical Object|
The present invention describes a semi-active device 20 for damping motion between structures having multi-degrees of freedom. A magnetic field produced by a permanent magnet, a coil, or a combination thereof, change the rheological properties of an MR fluid 40 to effectively lock up the components and the structures to which they are attached to serve as a brake or damper of the . Here we study the partly disordered material CsNiCrF 6 and show that this material is a multiple Coulomb phase with signature correlations in three degrees of freedom Cited by: 6.
The main research goal of this thesis is to determine what performance gains can be achieved with a high bandwidth electromagnetic active suspension. As a baseline vehicle a BMW i is used, for which a retroﬁt electromagnetic suspension consisting of a spring and tubular perma-nent magnet actuator (TPMA) is designed. System Dynamics for Engineering Students. System Dynamics for Engineering Students Concepts and Applications This book and the individual contributions contained in it are protected under copyright by the Publisher (other than as may be Multiple Degree-of-Freedom Mechanical Systems Conﬁ guration, Degrees of Freedom File Size: 1MB.
Traditionally a rigid bodied airplane is seen as having 6 control degrees of freedom, 3 in translation (heave, sway, surge) and 3 in rotation (pitch, yaw, roll). As an immobile articulated body, a motorcycle could be said to have 2 representati. This research explored design of a magnetorheological (MR) spherical brake as a multi-DOF actuator. To the best of our knowledge, our design is the first ever multi-DOF spherical brake using MR fluid. The primary goal was to design a compact but powerful brake using the serpentine flux path approach. An optical position measurement system was also designed to eliminate the gimbal mechanisms.
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Get this from a library. Research related to multi degree of freedom magnetic suspensions: a thesis. [Yan Yang; United States.
National Aeronautics and Space Administration.]. Fig. 2 shows a schematic of the spherical motor which is capable of two degrees-of-freedom. It has a spherical permanent magnet rotor and a simple 3-phase stator coil arrangement, the rotor bearing being a low friction surface coating.
Firstly, the two-degree-of-freedom vibration system model with variable stiffness magnetic isolator is established.
It is mainly due to the magnetic flux density, as depicted in fig where the magnetic flux lines are along the radial direction and mostly distributed in the top and bottom area of the magnet. This type of magnetic field distribution is beneficial to enhance the output voltage when most of magnetic flux lines are encircled by winding by: Micromachined contactless suspensions.
produced by the use of high-frequency magnetic fields generated by a multi-pole stator coil. is the singularity analysis of multi-degree-of-freedom. controlling a kind of magnetic suspension system with 3 degree of freedom. At first, the dynamic of the magnetic suspension system and the related equations are presented.
Regarding unstable nature and non-linearity of magnetic suspension system using techniques of liner control for achieving optimal. A three-degree of freedom (DOF) same-stiffness permanent magnetic spring is proposed, which comprises three groups of permanent annular and cylindrical magnets.
The three groups of magnets are symmetrically arranged on a concentric circle. In each grAuthor: Feng Sun, Ming Zhang, Ming Zhang, Junjie Jin, Zhenyun Duan, Jiaqi Jin, Xiaoyou Zhang.
For the two spring-mass example, the equation of motion can be written in matrix form as. For a system with two masses (or more generally, two degrees of freedom), M and K are 2x2 matrices. For a system with n degrees of freedom, they are nxn matrices.
The spring-mass system is linear. Determine the number of degrees of freedom for the problem; this determines the size of the mass, damping, and stiffness matrices. Typically, one degree of freedom can be associated with each mass. Enter the mass values (if associated with a degree of freedom) into the diagonals of the mass matrix; the exact ordering does not matter.
suspension(regeneration) unit consisting of tubular permanent magnet linear generator. Authors have designed an electromagnetic device which can generate maximum power of 12 W and N damping force, when fitted in a car shock absorber.
Gupta et al. () conclude that large magnetic field in the air gap of linear generator ensuresFile Size: KB. two degree of freedom controller with integral action is obtained and tested on the magnetic levitation system, which is a good test-bed for control design because of its nonlinearity and unstability with practical uses in high-speed transportation and magnetic bearings.
SimulationsCited by: 1. This thesis covers the activities associated with (1) recommissioning of the 6-inch Magnetic Suspension and Balance System (MSBS) and (2) enhancing the Annular Suspension and Pointing System (ASPS).
These activities continue the program of research in the multi degree of freedom magnetic suspension program at Old Dominion University.
A parameter study of a multiple degree of freedom (MDOF) piezoelectric vibration energy harvester (PVEH) system has been conducted to provide a guideline for tuning its harvesting bandwidth and optimizing its design. The four-degree-of-freedom system is then analysed including a treatment of roll transients and the use of cost functions to perform multi-parameter optimisations.
The use of seven degree of freedom and systems with larger numbers of degrees of freedom is then considered. An ideal suspension allowing independent control of all modes is described.
ISSN – current excitation and yield stress. In the electromagnetic analysis gap width, flange length, gap length, piston head housing thickness, radius of piston core, the number of coil turns and the applied current were selected as design parameters to File Size: KB.
suspension system research papers. With two wheels mounted together on a single wheel carrier, as on a rigid beam axle (d), the suspension requires two degrees of freedom so that each wheel will have one degree of freedom.
The necessary design will permit the axle both parallel travel and rolling motion We have developed an advanced. The design of the electromagnetic suspension system can be done with two types: 1) By using a Hydraulic Damper or.
2) By using Linear Motor as a Damper. The concept is to design the magnetic suspension system on the front shock absorber of the motor bike to have a better performance with ease of handling and comfort ride. ing magnetic suspension and balance faci Iity (SMSS) are simi lar to those in free-fl'ightranges (or tunnel~).
A complete description of this facit ity can' be found in reference I. The mode I undergoes a "quasi-six-degree-of freedom" motion which must be monitored in both position and angular orien tation, from which the aerodynamics must be inferred. proposed magnetic system which is ﬁxed to the magnet 3, the streamwise force F s=F 1+F 2+F 3+F 4+F 5 and a net torque M on the magnet arrangement will be measured by a multi-degree-of-freedom sensor.
The force is proportional to the velocity of the ﬂow and the torque would be a measure of the velocity gradient on the measuring point.
The authors of this monograph played a major role in the development of these suspension devices at the Draper Laboratory, and their book describes and analyzes the operating characteristics of both active and passive types of magnetic and electric sor Draper writes in his Foreword that “The authors of this book have had the.
magnetic suspension system can be a option to the same. Therefore the magnetic suspension system can be used in many applications of the suspension in Automobile industries and in other industries.
The mechanical magnetic suspension system using permanent magnet also has some disadvantages of slow responsibility and difficult Size: KB.A novel magnetic suspension platform is studied in this paper.
Three sets of suspension apparatus is adopted to produce suspension force, each of which consists of the permanent magnet, the U shape yoke and suspension coils. Material of yoke is laminated transformer silicon steel (30ZH).Material of Permanent magnet is Nd2Fe14B.
The mathematical model of suspension was established by Author: Zhen Xiong Zhou, Yong Yin Qu, De Jun Liu.3 degrees of freedom, 4-pole electromagnet, magnetic levitation, two-dimensional linear motor, zero-power control. Abstract: Electromagnetic suspension (EMS) has been widely used in many industrial fields because of various advantages in practical use.
The U-type magnets are often used to generate the levitation force in the EMS system.