Analysis of resonant frequency of moving magnet linear compressor of stirling cryocooler

Xia, Ming; Chen, Xiaoping

doi:10.1016/j.ijrefrig.2010.01.002

Cited by 24 publications

(10 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…But for the high thrust occasion, the moving-magnet linear motor is proposed [23]. However, the system natural frequency will be affected by the inherent characteristics of the magnetic spring, which make the electromagnetic system and the mechanical system have strong coupling characteristics [24].…”

Section: Coupling Law Between Electromagnetic Force and Load Charactementioning

confidence: 99%

Applied research status and its key technologies development of the electromagnetic linear actuator

Yin¹,

Pang²,

Li³

et al. 2016

Proceedings of the 2016 International Conference on Advanced Electronic Science and Technology (AEST 2016)

View full text Add to dashboard Cite

Abstract. Firstly, this paper briefly describes the origin of the electromagnetic linear actuator which research status and development are summarised. Secondly, it describes the principle, the characteristics of the moving-coil linear motor and the Moving-magnet linear motor. Thirdly, it analyses and summarizes the key technologies of the electromagnetic linear actuator. One key problem is the matching between electromagnetic force and the load. The other is the influence mechanism of the thermal load on dynamic characteristics. This paper can provide some reference.

show abstract

Section: Coupling Law Between Electromagnetic Force and Load Charactementioning

confidence: 99%

Applied research status and its key technologies development of the electromagnetic linear actuator

Yin¹,

Pang²,

Li³

et al. 2016

Proceedings of the 2016 International Conference on Advanced Electronic Science and Technology (AEST 2016)

View full text Add to dashboard Cite

show abstract

“…The results in Table 1 also indicated that the magnetic flux density of the coil I and II decreased with the increasing of displace and the magnetic force of libration assembly increased with the increasing of displace. So the magnetic force can be considered as the magnetic spring force in a moving magnet linear compressor [10]. …”

Section: Numerical Simulationmentioning

confidence: 99%

“…The results from simulations and experiments showed that the resonant frequency of the moving magnet linear compressors is affected by the machine spring, the gas spring, the magnet spring and the mass of moving assembly and the resonant frequency of the moving coil linear compressors is only affected by the machine spring, the gas spring and the mass of moving assembly [10].…”

Section: Introductionmentioning

confidence: 99%

Study on magnetic circuit of moving magnet linear compressor

Xia

Chen

2015

SPIE Proceedings

Self Cite

View full text Add to dashboard Cite

The moving magnet linear compressors are very popular in the tactical miniature stirling cryocoolers. The magnetic circuit of LFC3600 moving magnet linear compressor, manufactured by Kunming institute of Physics, was studied in this study. Three methods of the analysis theory, numerical calculation and experiment study were applied in the analysis process. The calculated formula of magnetic reluctance and magnetomotive force were given in theoretical analysis model. The magnetic flux density and magnetic flux line were analyzed in numerical analysis model. A testing method was designed to test the magnetic flux density of the linear compressor. When the piston of the motor was in the equilibrium position, the value of the magnetic flux density was at the maximum of 0.27T. The results were almost equal to the ones from numerical analysis.

show abstract

“…By applying the side-thrust force, i.e. equation (23), to the piston/cylinder dynamics in equation (24), the transient response of the pistoncylinder system can be obtained. Based on the physical parameters listed in Table 2, the reaction force due to the gas in the chamber, the inertial force of piston, and the sidethrust force by the piston onto the cylinder wall in terms of the crankshaft angle are shown in Fig.…”

Section: A2 Analysis Of Side-thrust Force and Vibration By Piston-slapmentioning

confidence: 99%

“…In other words, in order to regulate the lateral position of the mover, a certain amount of electric energy has to be consumed in radial AMBs. As for the axial motion of the drive rod, in order to resist the inertial force of the highfrequency mover, the linear compressor is usually equipped with mechanical springs [23,24]. In other words, due to the additional mechanical constraint by springs, the high frequency and variable frequency drive for the linear compressor can barely be achieved.…”

Section: Introductionmentioning

confidence: 99%

Innovative linear compressor by magnetic drive and control

Tsai

Chiang

2011

Proceedings of the Institution of Mechanical Engineers, Part I:

View full text Add to dashboard Cite

A mathematical model for the magnetically levitated linear compressor (MLLC), which consists of a magnetic linear actuator, a pair of active magnetic bearings (AMBs), and a drive rod, has been developed. To prevent any potential wear or collision by the drive rod against conventional bearings, and certainly to reduce noise, the AMB pair is employed to regulate the lateral position deviation of the drive rod. The integral sliding mode control (ISMC) is synthesized to account for displacement-dependent system parameters and input non-linearities for the MLLC system. In addition, the closed-loop stability, under the presence of the reaction force by gas in the chamber, is proven by the Lyapunov direct method. Finally, the efficacy of the ISMC is verified by intensive computer simulations to ensure its superior regulation capability for lateral position deviation on the drive rod, retention of constant stroke of the piston, and counterbalance against the reaction force by gas during the Otto cycle.

show abstract

Analysis of resonant frequency of moving magnet linear compressor of stirling cryocooler

Cited by 24 publications

References 4 publications

Applied research status and its key technologies development of the electromagnetic linear actuator

Applied research status and its key technologies development of the electromagnetic linear actuator

Study on magnetic circuit of moving magnet linear compressor

Innovative linear compressor by magnetic drive and control

Contact Info

Product

Resources

About