磁轴承用电感式位移传感器的研究
中文摘要
电磁支承作为一项被世界认可的高技术，广泛应用在社会经济的诸多方面，电磁支承的稳定性与其内部的位移传感特性密切相关，并且其传感技术日益受到人们的关注。在各种类型的传感器中，感应型的由于其自身的优越性得到了越来越多的应用，所以对感应型的各个环节进行了进一步的优化和改善，具有重要的理论和实际意义。论文对磁力轴承用电感式位置传感器展开了深入的探讨，在通用的电感式位置传感器的理论上，对其进行了优化设计，并设计出了集成的电感式位置传感器。对微分型感应位移传感器进行了理论研究，并对其进行了建模和性能研究。本项目针对现有差动电阻位移传感器，研究其磁芯构造和装配问题，拟通过将分离的磁芯进行优化，获得集成磁芯，不仅简化了装配过程，还可消除不均匀装配带来的测量偏差，提高其检测能力。根据电磁支承应用的需要，对传感主体的结构尺寸、线圈匝数和传感激发等进行了具体的设计。按照所提出的方案，对一体化铁芯和偏心轴进行了加工和制造，对所需的线圈进行了缠绕，选择了高精度的整流器，并进行了线路的设计。通过构建集成式传感系统的静态测试平台，测试和分析集成式传感系统的输入和输出数据，采用 Matlab进行拟合求取系统的线性、灵敏度、重复性和滞后等关键性能参数，并分析其在不同频率下的变化规律。研究成果将为基于电磁支承的新型位置检测技术提供重要的科学依据和技术支撑，具有重要的科学意义和应用价值。
关键词： 磁悬浮轴承； 位移传感器； 差动变压器； 整流电路
Abstract
As a high technology recognized by the world, electromagnetic support is widely used in many aspects of social economy. The stability of electromagnetic support is closely related to its internal displacement sensing characteristics, and its sensing technology is increasingly attracting people's attention. Among various types of sensors, the inductive type has been used more and more because of its advantages. Therefore, it is of great theoretical and practical significance to further optimize and improve the various links of the inductive type. In this paper, the inductive position sensor for magnetic bearing is discussed in depth. On the basis of the general inductive position sensor theory, it is optimized and designed, and an integrated inductive position sensor is designed. The differential induction displacement sensor is studied theoretically, and its modeling and performance are studied. This project aims at the existing differential resistance displacement sensor and studies its magnetic core structure and assembly. It is proposed to optimize the separated magnetic core to obtain the integrated magnetic core, which not only simplifies the assembly process, According to the need of electromagnetic support application, the structure size, coil turns and sensing excitation of the sensing body are specifically designed. According to the proposed scheme, the integrated iron core and eccentric shaft are processed and manufactured, the required coils are wound, the high-precision rectifier is selected, and the circuit is designed. By constructing the static test platform of the integrated sensing system, the input and output data of the integrated sensing system are tested and analyzed, and the key performance parameters of the system, such as linearity, sensitivity, repeatability and hysteresis, are obtained by using Matlab for fitting, and their change rules at different frequencies are analyzed. The research results will provide important scientific basis and technical support for the new position detection technology based on electromagnetic support, and have important scientific significance and application value.
Key words: Magnetic suspension bearing;Displacement sensor;Differential transformer; rectifier circuit
目 录
引 言 1
1 磁轴承相关概述 2
1.1 磁轴承概述 2
1.2 磁轴承用位移传感器的研究现状 2
2 电感式位移传感器的结构优化与设计 3
2.1 电感式位移传感器的原理 3
2.2 电感式位移传感器结构设计 3
3 电感式位移传感器的磁路仿真分析 5
3.1 转子移动时传感器磁路的变化情况 5
3.2 转子偏移时线圈互感变化量的变化情况 5
3.3 基本指标的仿真测量与分析 5
4 磁轴承用位移传感器的电路设计 6
4.1 常用的电感位移传感器测量电路 6
4.2 电感位移传感器测量电路设计 7
5 电感式位移传感器的调试与实验研究 8
5.1 传感器的制作 8
5.2 电路板的调试 9
结 论 12
致 谢 13
参考文献 14
中文摘要
电磁支承作为一项被世界认可的高技术，广泛应用在社会经济的诸多方面，电磁支承的稳定性与其内部的位移传感特性密切相关，并且其传感技术日益受到人们的关注。在各种类型的传感器中，感应型的由于其自身的优越性得到了越来越多的应用，所以对感应型的各个环节进行了进一步的优化和改善，具有重要的理论和实际意义。论文对磁力轴承用电感式位置传感器展开了深入的探讨，在通用的电感式位置传感器的理论上，对其进行了优化设计，并设计出了集成的电感式位置传感器。对微分型感应位移传感器进行了理论研究，并对其进行了建模和性能研究。本项目针对现有差动电阻位移传感器，研究其磁芯构造和装配问题，拟通过将分离的磁芯进行优化，获得集成磁芯，不仅简化了装配过程，还可消除不均匀装配带来的测量偏差，提高其检测能力。根据电磁支承应用的需要，对传感主体的结构尺寸、线圈匝数和传感激发等进行了具体的设计。按照所提出的方案，对一体化铁芯和偏心轴进行了加工和制造，对所需的线圈进行了缠绕，选择了高精度的整流器，并进行了线路的设计。通过构建集成式传感系统的静态测试平台，测试和分析集成式传感系统的输入和输出数据，采用 Matlab进行拟合求取系统的线性、灵敏度、重复性和滞后等关键性能参数，并分析其在不同频率下的变化规律。研究成果将为基于电磁支承的新型位置检测技术提供重要的科学依据和技术支撑，具有重要的科学意义和应用价值。
关键词： 磁悬浮轴承； 位移传感器； 差动变压器； 整流电路
Abstract
As a high technology recognized by the world, electromagnetic support is widely used in many aspects of social economy. The stability of electromagnetic support is closely related to its internal displacement sensing characteristics, and its sensing technology is increasingly attracting people's attention. Among various types of sensors, the inductive type has been used more and more because of its advantages. Therefore, it is of great theoretical and practical significance to further optimize and improve the various links of the inductive type. In this paper, the inductive position sensor for magnetic bearing is discussed in depth. On the basis of the general inductive position sensor theory, it is optimized and designed, and an integrated inductive position sensor is designed. The differential induction displacement sensor is studied theoretically, and its modeling and performance are studied. This project aims at the existing differential resistance displacement sensor and studies its magnetic core structure and assembly. It is proposed to optimize the separated magnetic core to obtain the integrated magnetic core, which not only simplifies the assembly process, According to the need of electromagnetic support application, the structure size, coil turns and sensing excitation of the sensing body are specifically designed. According to the proposed scheme, the integrated iron core and eccentric shaft are processed and manufactured, the required coils are wound, the high-precision rectifier is selected, and the circuit is designed. By constructing the static test platform of the integrated sensing system, the input and output data of the integrated sensing system are tested and analyzed, and the key performance parameters of the system, such as linearity, sensitivity, repeatability and hysteresis, are obtained by using Matlab for fitting, and their change rules at different frequencies are analyzed. The research results will provide important scientific basis and technical support for the new position detection technology based on electromagnetic support, and have important scientific significance and application value.
Key words: Magnetic suspension bearing;Displacement sensor;Differential transformer; rectifier circuit
目 录
引 言 1
1 磁轴承相关概述 2
1.1 磁轴承概述 2
1.2 磁轴承用位移传感器的研究现状 2
2 电感式位移传感器的结构优化与设计 3
2.1 电感式位移传感器的原理 3
2.2 电感式位移传感器结构设计 3
3 电感式位移传感器的磁路仿真分析 5
3.1 转子移动时传感器磁路的变化情况 5
3.2 转子偏移时线圈互感变化量的变化情况 5
3.3 基本指标的仿真测量与分析 5
4 磁轴承用位移传感器的电路设计 6
4.1 常用的电感位移传感器测量电路 6
4.2 电感位移传感器测量电路设计 7
5 电感式位移传感器的调试与实验研究 8
5.1 传感器的制作 8
5.2 电路板的调试 9
结 论 12
致 谢 13
参考文献 14
