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A novel integrated structure with a radial displacement sensor and a permanent magnet biased radial magnetic bearing.

Sun J, Zhang Y - Sensors (Basel) (2014)

Bottom Line: In this paper, a novel integrated structure is proposed in order to reduce the axial length of the high speed of a magnetically suspended motor (HSMSM) to ensure the maximum speed, which combines radial displacement sensor probes and the permanent magnet biased radial magnetic bearing in HSMSM.The sensor probes are integrated in the magnetic bearing, and the sensor preamplifiers are placed in the control system of the HSMSM, separate from the sensor probes.The proposed integrated structure can save space in HSMSMs, improve the working frequency, reduce the influence of temperature on the sensor circuit, and improve the stability of HSMSMs.

View Article: PubMed Central - PubMed

Affiliation: School of Instrumentation Science and Optoelectronics Engineering, Beihang University, Beijing 100191, China. sunjinji@buaa.edu.cn.

ABSTRACT
In this paper, a novel integrated structure is proposed in order to reduce the axial length of the high speed of a magnetically suspended motor (HSMSM) to ensure the maximum speed, which combines radial displacement sensor probes and the permanent magnet biased radial magnetic bearing in HSMSM. The sensor probes are integrated in the magnetic bearing, and the sensor preamplifiers are placed in the control system of the HSMSM, separate from the sensor probes. The proposed integrated structure can save space in HSMSMs, improve the working frequency, reduce the influence of temperature on the sensor circuit, and improve the stability of HSMSMs.

No MeSH data available.


Photograph of a HSMSM with the proposed structure.
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f12-sensors-14-01950: Photograph of a HSMSM with the proposed structure.

Mentions: The photograph of the proposed novel structure is shown in Figure 11, and it is seen clearly that the four sensor probes are placed between two groups of stator magnetic poles, which are distributed uniformly along the circumstance, so the radial magnetic bearing is integrated with the radial sensor probes. Figure 12 shows a photograph of a 4 kW HSMSM with the proposed structure, and it can be seen that the sensor circuit is separate from the sensor probes. The whole axial length can be reduced by 9% compared to the structure in which the radial magnetic bearing is separated from the radial sensor probe by calculation, and then the first bending mode will increase about 16%, as well as the maximum critical speed.


A novel integrated structure with a radial displacement sensor and a permanent magnet biased radial magnetic bearing.

Sun J, Zhang Y - Sensors (Basel) (2014)

Photograph of a HSMSM with the proposed structure.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC3958256&req=5

f12-sensors-14-01950: Photograph of a HSMSM with the proposed structure.
Mentions: The photograph of the proposed novel structure is shown in Figure 11, and it is seen clearly that the four sensor probes are placed between two groups of stator magnetic poles, which are distributed uniformly along the circumstance, so the radial magnetic bearing is integrated with the radial sensor probes. Figure 12 shows a photograph of a 4 kW HSMSM with the proposed structure, and it can be seen that the sensor circuit is separate from the sensor probes. The whole axial length can be reduced by 9% compared to the structure in which the radial magnetic bearing is separated from the radial sensor probe by calculation, and then the first bending mode will increase about 16%, as well as the maximum critical speed.

Bottom Line: In this paper, a novel integrated structure is proposed in order to reduce the axial length of the high speed of a magnetically suspended motor (HSMSM) to ensure the maximum speed, which combines radial displacement sensor probes and the permanent magnet biased radial magnetic bearing in HSMSM.The sensor probes are integrated in the magnetic bearing, and the sensor preamplifiers are placed in the control system of the HSMSM, separate from the sensor probes.The proposed integrated structure can save space in HSMSMs, improve the working frequency, reduce the influence of temperature on the sensor circuit, and improve the stability of HSMSMs.

View Article: PubMed Central - PubMed

Affiliation: School of Instrumentation Science and Optoelectronics Engineering, Beihang University, Beijing 100191, China. sunjinji@buaa.edu.cn.

ABSTRACT
In this paper, a novel integrated structure is proposed in order to reduce the axial length of the high speed of a magnetically suspended motor (HSMSM) to ensure the maximum speed, which combines radial displacement sensor probes and the permanent magnet biased radial magnetic bearing in HSMSM. The sensor probes are integrated in the magnetic bearing, and the sensor preamplifiers are placed in the control system of the HSMSM, separate from the sensor probes. The proposed integrated structure can save space in HSMSMs, improve the working frequency, reduce the influence of temperature on the sensor circuit, and improve the stability of HSMSMs.

No MeSH data available.