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Mechatronics rotary excitation device capable of simultaneously generating high-frequency excitation force and low-frequency excitation force

A vibration excitation device, high and low frequency technology, applied in the field of mechatronics rotating vibration excitation device, achieves the effect of low cost, convenient adjustment and wide application range

Active Publication Date: 2022-04-12
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention solves the problem that the device for providing the excitation force in the prior art is mainly a single-direction single-frequency electromagnetic exciter, which is large in size and cannot be applied to a limited space, and cannot simulate the low-frequency rotation excitation force generated during the movement of the rotating machinery rotor. , and the high-frequency excitation force caused by other factors such as airflow cannot reflect the real excitation state of the rotor-bearing-casing system, thus providing a mechatronic rotary excitation that simultaneously generates high and low frequency excitation forces device;

Method used

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  • Mechatronics rotary excitation device capable of simultaneously generating high-frequency excitation force and low-frequency excitation force
  • Mechatronics rotary excitation device capable of simultaneously generating high-frequency excitation force and low-frequency excitation force
  • Mechatronics rotary excitation device capable of simultaneously generating high-frequency excitation force and low-frequency excitation force

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specific Embodiment approach 1

[0035] Specific implementation mode one: refer to Figure 1 to Figure 10 Describe this embodiment. This embodiment provides a mechatronic rotary vibration excitation device that simultaneously generates high and low frequency excitation forces. The rotation vibration excitation device includes a driving gear shaft 1, two driven gear shafts 2, and a motor assembly , box 4, housing 5, bearing seat 6, front bearing cap 7, three rear bearing caps 8, four force sensors 9 and outer ring base 10;

[0036] The end surface of the gear portion in the driven gear shaft 2 is equidistantly processed with a plurality of force-adjusting threaded holes 2-1, and the force-adjusting threaded holes 2-1 are used for installing screws;

[0037] The motor assembly includes a stator coil 3-1 and a rotor core 3-2;

[0038] The box body 4 is a cylindrical barrel, and the edge of the closed end surface of the box body 4 is equidistantly processed with a plurality of No. 1 threaded blind holes along th...

specific Embodiment approach 2

[0043] Specific implementation mode two: refer to Figure 1 to Figure 10 Describe this embodiment. This embodiment is to further limit the force sensor 9 and the outer ring base 10 described in the first specific embodiment. In this embodiment, each of the force sensors 9 and the outer ring base 10 interfere Cooperating, the outer ring base 10 can press the force sensor 9 on the box body 4, and the excitation force can be output in real time. Other compositions and connection methods are the same as those in Embodiment 1.

[0044] In this embodiment, the change of the output excitation force can be detected in real time through the force sensor embedded in the box.

specific Embodiment approach 3

[0045] Specific implementation mode three: refer to Figure 1 to Figure 10 This embodiment is described. This embodiment is to further limit the rotary vibration excitation device described in the first specific embodiment. 5, an aviation plug is inserted on the junction box 11, and a frequency converter is connected in series on the lead of the aviation plug. Other compositions and connection methods are the same as those in Embodiment 1.

[0046] In such a setting, one end of the aviation plug is connected to the power supply through a wire, and the other end is used to connect with the stator coil 3-1 to energize the stator coil to generate a magnetic field to rotate the rotor core. There is a frequency converter connected in series on the aviation plug, which can pass The frequency converter adjusts the magnitude of the electric field applied to the stator coil 3-1, thereby changing the rotational speed of the rotor core 3-2 relative to the stator coil 3-1, and changing t...

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Abstract

The invention discloses an electromechanical integrated rotary excitation device capable of simultaneously generating high-frequency excitation force and low-frequency excitation force, belongs to the field of manufacturing of rotary exciters, and aims to solve the problem that a device for providing excitation force in the prior art cannot simulate low-frequency rotary excitation force generated in the motion process of a rotary mechanical rotor and high-frequency excitation force caused by other factors such as airflow and the like. According to the mechatronics rotary excitation device capable of simultaneously generating the high-frequency excitation force and the low-frequency excitation force, the change condition of the output excitation force can be detected in real time through a force sensor embedded in a box body; the design of meshing of a plurality of gear shafts can generate excitation force with rotor rotation frequency and gear meshing frequency at the same time, the excitation effect generated by a rotating part can be truly simulated through the output of low-frequency excitation force and high-frequency excitation force, and the vibration measurement precision of the whole engine is greatly improved.

Description

technical field [0001] The invention belongs to the field of rotary vibration exciter manufacturing, and in particular relates to an electromechanical integrated rotary vibration excitation device which simultaneously generates high and low frequency vibration force. Background technique [0002] Experimental testing is one of the important means to accurately grasp the dynamic characteristics of the rotor, bearing and casing system, including excitation, testing and data analysis, among which excitation is the most critical link in the dynamic test research of the rotor-bearing-casing system . [0003] At present, the vibration of the whole engine is carried out on the hot test bench, which is expensive and has many interference factors, and it is impossible to accurately obtain the vibration characteristics of each order. The vibration of the whole engine mainly comes from the rotation frequency excitation of the rotor and the high frequency excitation of the airflow. Exi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M15/02G01M15/12
Inventor 刘占生闫哲锋何鹏
Owner HARBIN INST OF TECH