CN204099414U - Electric actuation electromagnetic bearing - Google Patents
Electric actuation electromagnetic bearing Download PDFInfo
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- CN204099414U CN204099414U CN201420556591.6U CN201420556591U CN204099414U CN 204099414 U CN204099414 U CN 204099414U CN 201420556591 U CN201420556591 U CN 201420556591U CN 204099414 U CN204099414 U CN 204099414U
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- electromagnetic bearing
- electromagnet
- piezoelectric ceramics
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- 230000001105 regulatory effect Effects 0.000 claims abstract description 8
- 238000005339 levitation Methods 0.000 claims 1
- 239000000919 ceramic Substances 0.000 abstract description 21
- 239000000725 suspension Substances 0.000 abstract description 8
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 230000001276 controlling effect Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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Abstract
本实用新型公开了一种电致动电磁轴承，包括电磁轴承外壳，在电磁轴承外壳的内壁上设有偶数个对称分布的压电陶瓷，在压电陶瓷的内侧设有U型电磁铁，在电磁轴承外壳内设有悬浮轴；压电陶瓷与电压调节装置连接，U型电磁铁与电流调节装置连接。本实用新型利用压电陶瓷加载电压后就可以伸缩的特性，利用低电流的电压来控制压电陶瓷，从而控制电磁铁与悬浮轴之间的间隙，可以实现电磁铁内部电流的最小化，这样电磁铁消耗的电能就最小，而压电陶瓷在稳定时(也就是不移动时)是几乎不消耗能量的，这样整个电磁轴承的耗能就很小了，可以大幅减小电磁轴承的能耗、提高电磁轴承的耐高温性能、降低电磁轴承的温升。
The utility model discloses an electrically actuated electromagnetic bearing, which comprises an electromagnetic bearing shell, an even number of symmetrically distributed piezoelectric ceramics are arranged on the inner wall of the electromagnetic bearing shell, and U-shaped electromagnets are arranged on the inner side of the piezoelectric ceramics. A suspension shaft is arranged in the shell of the electromagnetic bearing; the piezoelectric ceramic is connected with the voltage regulating device, and the U-shaped electromagnet is connected with the current regulating device. The utility model utilizes the characteristic that piezoelectric ceramics can expand and contract after being loaded with voltage, and uses low-current voltage to control piezoelectric ceramics, thereby controlling the gap between the electromagnet and the suspension shaft, and can realize the minimization of the internal current of the electromagnet. The electric energy consumed by the electromagnet is the smallest, and the piezoelectric ceramic consumes almost no energy when it is stable (that is, when it is not moving), so that the energy consumption of the entire electromagnetic bearing is very small, which can greatly reduce the energy consumption of the electromagnetic bearing , Improve the high temperature resistance of the electromagnetic bearing and reduce the temperature rise of the electromagnetic bearing.
Description
技术领域 technical field
本实用新型涉及电学技术领域，尤其是一种电致动电磁轴承。 The utility model relates to the field of electrical technology, in particular to an electrically actuated electromagnetic bearing.
背景技术 Background technique
目前，公知的电磁轴承有两大类，第一：无永磁偏置的电流型电磁轴承；第二：有永磁偏置的电流型电磁轴承。这两种有一个共同特点电磁铁与轴的距离不能改变。对于传统的电磁轴承而言，如果需要电磁铁对悬浮轴有恒定的作用力，随着悬浮轴与电磁铁之间距离的变化，通入电磁铁的电流将呈现出非线性的变化，这对于控制来说是较为复杂的，也会导致控制效果的不理想。此外随着间距的增大，通入电磁铁的电流将大幅增大，这会增大线圈的发热损耗，不利于节能同时也不利于电磁铁的抗高温性能。 At present, there are two types of known electromagnetic bearings, first: current type electromagnetic bearing without permanent magnetic bias; second: current type electromagnetic bearing with permanent magnetic bias. These two have a common feature that the distance between the electromagnet and the shaft cannot be changed. For traditional electromagnetic bearings, if the electromagnet is required to have a constant force on the suspension shaft, as the distance between the suspension shaft and the electromagnet changes, the current flowing into the electromagnet will show a nonlinear change, which is for Control is more complicated, and it will also lead to unsatisfactory control effects. In addition, as the spacing increases, the current flowing into the electromagnet will increase significantly, which will increase the heating loss of the coil, which is not conducive to energy saving and also to the high temperature resistance of the electromagnet.
发明内容 Contents of the invention
本实用新型的目的是：提供一种电致动电磁轴承，它不仅能实现常规电磁轴承的功能即调整电磁力的大小，同时还具有在稳态时消耗电能少的优点，以克服现有技术的不足。 The purpose of this utility model is to provide an electrically actuated electromagnetic bearing, which can not only realize the function of a conventional electromagnetic bearing, that is, adjust the size of the electromagnetic force, but also has the advantage of less power consumption in a steady state, so as to overcome the existing technology. lack of.
本实用新型是这样实现的：电致动电磁轴承，包括电磁轴承外壳，在电磁轴承外壳的内壁上设有偶数个对称分布的压电陶瓷，在压电陶瓷的内侧设有U型电磁铁，在电磁轴承外壳内设有悬浮轴；压电陶瓷与电压调节装置连接，U型电磁铁与电流调节装置连接。 The utility model is achieved in the following way: the electrically actuated electromagnetic bearing includes an electromagnetic bearing housing, an even number of symmetrically distributed piezoelectric ceramics are arranged on the inner wall of the electromagnetic bearing housing, and U-shaped electromagnets are arranged on the inner side of the piezoelectric ceramics. A suspension shaft is arranged in the shell of the electromagnetic bearing; the piezoelectric ceramic is connected with the voltage regulating device, and the U-shaped electromagnet is connected with the current regulating device.
所述的U型电磁铁的两个U型端的磁极相反。这样主磁路就只在一个电磁铁内部，避免多个电磁铁的耦合干扰。 The magnetic poles of the two U-shaped ends of the U-shaped electromagnet are opposite. In this way, the main magnetic circuit is only inside one electromagnet, avoiding the coupling interference of multiple electromagnets.
所述的压电陶瓷嵌合或粘合在电磁轴承外壳的内壁上，U型电磁铁嵌合或粘合在压电陶瓷内侧。 The piezoelectric ceramics are embedded or bonded on the inner wall of the electromagnetic bearing housing, and the U-shaped electromagnet is embedded or bonded inside the piezoelectric ceramics.
由于采用了上述技术方案，与现有技术相比，本实用新型利用压电陶瓷加载电压后就可以伸缩的特性，利用低电流的电压来控制压电陶瓷，从而控制电磁铁与悬浮轴之间的间隙，可以实现电磁铁内部电流的最小化，这样电磁铁消耗的电能就最小，而压电陶瓷在稳定时(也就是不移动时)是几乎不消耗能量的，这样整个电磁轴承的耗能就很小了，可以大幅减小电磁轴承的能耗、提高电磁轴承的耐高温性能、降低电磁轴承的温升。本实用新型结构简单，成本低廉，使用效果好。 Due to the adoption of the above-mentioned technical scheme, compared with the prior art, the utility model utilizes the characteristic that piezoelectric ceramics can expand and contract after being loaded with voltage, and uses low-current voltage to control piezoelectric ceramics, thereby controlling the distance between the electromagnet and the suspension shaft. The gap can minimize the internal current of the electromagnet, so that the electric energy consumed by the electromagnet is the smallest, and the piezoelectric ceramic consumes almost no energy when it is stable (that is, when it does not move), so the energy consumption of the entire electromagnetic bearing It is very small, which can greatly reduce the energy consumption of the electromagnetic bearing, improve the high temperature resistance of the electromagnetic bearing, and reduce the temperature rise of the electromagnetic bearing. The utility model has the advantages of simple structure, low cost and good use effect.
附图说明 Description of drawings
附图1为本实用新型的结构示意图。 Accompanying drawing 1 is the structural representation of the utility model.
具体实施方式 Detailed ways
本实用新型的实施例：电致动电磁轴承的结构如图1所示，包括电磁轴承外壳1，在电磁轴承外壳1的内壁上设有偶数个对称分布的压电陶瓷2，压电陶瓷2嵌合电磁轴承外壳1的内壁上；在压电陶瓷2的内侧设有U型电磁铁3，U型电磁铁3嵌合在压电陶瓷2内侧；在电磁轴承外壳1内设有悬浮轴4；压电陶瓷2与电压调节装置连接，U型电磁铁3与电流调节装置连接；U型电磁铁3的两个U型端的磁极相反。 Embodiment of the present utility model: the structure of the electrically actuated electromagnetic bearing is shown in Fig. Embedded on the inner wall of the electromagnetic bearing housing 1; a U-shaped electromagnet 3 is provided on the inner side of the piezoelectric ceramic 2, and the U-shaped electromagnet 3 is embedded on the inner side of the piezoelectric ceramic 2; a suspension shaft 4 is provided in the electromagnetic bearing housing 1 ; The piezoelectric ceramic 2 is connected to the voltage regulating device, and the U-shaped electromagnet 3 is connected to the current regulating device; the magnetic poles of the two U-shaped ends of the U-shaped electromagnet 3 are opposite.
本实施例中，测量采用的压电陶瓷2的电容量来计算出间隙大小，根据间隙大小计算出加载到压电陶瓷2上的电压，以及U型电磁铁3中的电流。然后功率放大器把电压信号加载到压电陶瓷2和U型电磁铁3上（这里压电陶瓷和电磁铁使用两套独立的功率放大器），然后再检测电容量大小，进入控制的循环，就可以实现轴的悬浮了。 In this embodiment, the capacitance of the piezoelectric ceramic 2 used is measured to calculate the size of the gap, and the voltage applied to the piezoelectric ceramic 2 and the current in the U-shaped electromagnet 3 are calculated according to the size of the gap. Then the power amplifier loads the voltage signal to the piezoelectric ceramic 2 and the U-shaped electromagnet 3 (here the piezoelectric ceramic and the electromagnet use two sets of independent power amplifiers), and then detects the size of the capacitance and enters the control cycle. Axis suspension is achieved.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420556591.6U CN204099414U (en) | 2014-09-26 | 2014-09-26 | Electric actuation electromagnetic bearing |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420556591.6U CN204099414U (en) | 2014-09-26 | 2014-09-26 | Electric actuation electromagnetic bearing |
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| CN204099414U true CN204099414U (en) | 2015-01-14 |
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| CN201420556591.6U Expired - Fee Related CN204099414U (en) | 2014-09-26 | 2014-09-26 | Electric actuation electromagnetic bearing |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104265762A (en) * | 2014-09-26 | 2015-01-07 | 贵州大学 | Electroactive electromagnet bearing |
| CN109854622A (en) * | 2019-03-26 | 2019-06-07 | 中国船舶科学研究中心（中国船舶重工集团公司第七0二研究所） | A kind of active magnet bearing systems can control shafting radial vibration based on intellectual material |
-
2014
- 2014-09-26 CN CN201420556591.6U patent/CN204099414U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104265762A (en) * | 2014-09-26 | 2015-01-07 | 贵州大学 | Electroactive electromagnet bearing |
| CN109854622A (en) * | 2019-03-26 | 2019-06-07 | 中国船舶科学研究中心（中国船舶重工集团公司第七0二研究所） | A kind of active magnet bearing systems can control shafting radial vibration based on intellectual material |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150114 Termination date: 20200926 |
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| CF01 | Termination of patent right due to non-payment of annual fee |