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Magnetic suspension device

A technology of magnetic levitation and levitation, which can be used in holding devices with magnetic attraction or thrust, transportation and packaging, sliding/floating railway systems, etc., and can solve problems such as unstable control.

Inactive Publication Date: 2010-12-08
TOSHIBA ELEVATOR KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, when the temperature fluctuates, due to the accompanying fluctuations in the offset voltage, stable control cannot be performed.

Method used

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Experimental program
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Effect test

no. 1 approach

[0085] figure 2 It is a figure which shows the structure of the magnetic levitation apparatus which concerns on 1st Embodiment of this invention. The overall structure is represented by 1'.

[0086] The gap sensor 121 is omitted in this overall structure 1'. Instead, the contact detection unit 130 is disposed on the suspension 111 and the vicinity of the suspension 111 . The contact detection unit 130 detects that the floating body 111 changes from the non-contact state to the contact state using, for example, the piezoelectric rubber 129 .

[0087] In addition, the suction control unit 115 includes a posture estimation unit 133 , a posture calculation unit 135 , an estimation initialization unit 137 , and an initial value setting unit 139 in addition to the above-mentioned contact detection unit 130 .

[0088] The posture estimation unit 133 is based on the excitation current Δi z The means for estimating the levitation gap length deviation Δz and its velocity d(Δz) / dt i...

no. 2 approach

[0143] Next, a second embodiment of the present invention will be described.

[0144] The second embodiment is characterized in that the excitation voltage and the excitation current are calculated according to each mode of the motion coordinate system of the floating body. Here, a case where the magnetic levitation device of the present invention is applied to an elevator will be described as an example.

[0145] Figure 4 It is a figure which shows the structure of the magnetic levitation apparatus concerning 2nd Embodiment of this invention. The case of applying the magnetic levitation device to the lift is represented by symbol 10 as a whole. in addition, Figure 5 It is a perspective view which shows the structure of the frame part of this magnetic levitation apparatus. Figure 6 It is a perspective view showing the structure around the magnet assembly of the magnetic levitation device. Figure 7 It is a front view showing the structure of the magnet assembly of this...

no. 3 approach

[0205] Next, a third embodiment of the present invention will be described.

[0206] In the above-mentioned first and second embodiments, the magnet assembly is installed on one side of the suspension, but this does not limit the installation position of the magnet assembly, such as Figure 11 As mentioned above, the magnet assembly can also be arranged on the ground side. Here, in order to simplify the description, the same symbols will be used for the parts common to the first and second embodiments.

[0207] Figure 11 It is a diagram showing the structure of the magnetic levitation device according to the third embodiment of the present invention, and the reference numeral 300 indicates the overall structure thereof.

[0208] The magnetic levitation device 300 includes: an auxiliary support part 302 , a magnet assembly 107 , a guide 304 , a vibration isolation plate 306 , a linear guide 308 , a suction force control part 115 , a power amplifier 313 and a current sensor 1...

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Abstract

An excitation voltage value at a time when a target value of coil current is set to zero by a target value setting section (150) is obtained and stored in a voltage storing unit (154). In a voltage input compensation unit (156), the excitation voltage value stored in the voltage storing unit (154) is subtracted from an excitation voltage value supplied to a driver (116) as an offset voltage valueto obtain a compensation value of the excitation voltage. The compensation value is input to a resistance calculation unit (158) to measure a coil resistance value, and according to the value, suspension control is performed.

Description

technical field [0001] The invention relates to a magnetic levitation device, which supports a levitation body in a non-contact manner through a constant conductance attraction magnetic levitation. Background technique [0002] The constant conductance magnetic levitation device has no noise and dust generation, and has been realized in railways such as HSST (High Speed ​​Surface Transport) and maglev trains (transrapid), or clean room transportation systems in semiconductor factories. Practical. In addition, attempts have been made to apply the magnetic levitation device to a guide device for a car of an elevator (see Patent Document 1) or to a door. [0003] In the magnetic levitation device, the electromagnet is opposed to the ferromagnetic member, and the suspension is suspended by the attraction force generated between the electromagnet and the ferromagnetic member by excitation. Therefore, the magnetic levitation system is basically unstable, and countermeasures for ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60L13/04B61B13/08B66B1/06H02N15/00
CPCB60L2200/26B60L13/06B66B7/044H02N15/00
Inventor 森下明平
Owner TOSHIBA ELEVATOR KK
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