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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.


The relationship between temperature and output voltage value.
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f14-sensors-14-01950: The relationship between temperature and output voltage value.

Mentions: The relation between displacement and output voltage is shown in Figure 13, and it is indicated that the curve has a good linearity in order to meet the sensor demands. In addition, the relationship between the temperature of the sensor circuit and output voltage is shown in Figure 14, where the output voltage ripple is approximately 4% as the temperature of the sensor circuit in the offline experiment varies from 20 °C to 70 °C. The displacement curve cannot reflect the change of temperature drift because it always remains constant under the condition of closed loop control. Therefore, the coil current curves of every channel can reflect the temperature drift effectively.


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

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

The relationship between temperature and output voltage value.
© Copyright Policy
Related In: Results  -  Collection

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

f14-sensors-14-01950: The relationship between temperature and output voltage value.
Mentions: The relation between displacement and output voltage is shown in Figure 13, and it is indicated that the curve has a good linearity in order to meet the sensor demands. In addition, the relationship between the temperature of the sensor circuit and output voltage is shown in Figure 14, where the output voltage ripple is approximately 4% as the temperature of the sensor circuit in the offline experiment varies from 20 °C to 70 °C. The displacement curve cannot reflect the change of temperature drift because it always remains constant under the condition of closed loop control. Therefore, the coil current curves of every channel can reflect the temperature drift effectively.

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.