阅读说明：本技术 一种惯质系数可调的惯质减振系统 (Inertial mass damping system with adjustable inertial mass coefficient ) 是由 朱宏平 沈文爱 龙振滔 孙子航 于 2020-12-17 设计创作，主要内容包括：本发明属于可变惯质控制领域,具体公开一种惯质系数可调的惯质减振系统,包括：飞轮主体,质量块,作动器,导轨,控制单元,以及基座；飞轮主体安装在基座上；飞轮主体的四周边缘均匀分布地连接有向其径向延伸的多个导轨,每个导轨上设置有一个质量块；作动器设置于飞轮主体上,用于在控制单元的控制下独立推动各质量块在各自所在导轨上滑动,以使得该惯质减振系统具有实际所需的惯质系数,实现惯质系数的无极调整。本发明提供的惯质减振系统,能够根据控制单元中的控制指令,控制质量块靠近或远离飞轮中心,因此能够在安装好后其惯质系数仍可以随意调节,即能无极调控惯质的惯质系数,在工程应用中不用重新拆卸安装,十分方便。(The invention belongs to the field of variable inerter control, and particularly discloses an inerter vibration reduction system with an adjustable inerter coefficient, which comprises: the flywheel comprises a flywheel body, a mass block, an actuator, a guide rail, a control unit and a base; the flywheel main body is arranged on the base; the periphery of the flywheel main body is uniformly connected with a plurality of guide rails which radially extend towards the flywheel main body in a distributed manner, and each guide rail is provided with a mass block; the actuator is arranged on the flywheel main body and used for independently pushing the mass blocks to slide on the guide rails where the mass blocks are located under the control of the control unit, so that the inertial mass vibration reduction system has an actually required inertial mass coefficient, and stepless adjustment of the inertial mass coefficient is realized. The inertial mass vibration reduction system provided by the invention can control the mass block to be close to or far from the center of the flywheel according to the control instruction in the control unit, so that the inertial mass coefficient can still be randomly adjusted after the mass block is installed, namely, the inertial mass coefficient of the inertial mass can be infinitely regulated and controlled, and the inertial mass vibration reduction system is not required to be disassembled and installed again in engineering application and is very convenient.)

1. An inerter vibration damping system with adjustable inerter coefficient, comprising: the flywheel comprises a flywheel body, a mass block, an actuator, a guide rail, a control unit and a base;

the flywheel main body is arranged on the base; the periphery of the flywheel main body is uniformly connected with a plurality of guide rails which radially extend towards the flywheel main body in a distributed manner, and each guide rail is provided with one mass block; the actuator is arranged on the flywheel main body and used for independently pushing the mass blocks to slide on the guide rails where the mass blocks are respectively located under the control of the control unit, so that the inertial mass vibration reduction system has an actually required inertial mass coefficient, and stepless adjustment of the inertial mass coefficient is realized.

2. The system of claim 1, wherein each mass is suspended from its corresponding guide rail.

3. The system of claim 1, wherein the actuator is embedded inside the flywheel body and independently drives the mass blocks to move so as to control the positions of the mass blocks on the guide rail.

4. The system of claim 3, wherein each mass block corresponds to one actuator; each actuator is connected with the corresponding mass block through the threaded rod so as to realize that the actuator drives the mass block to move.

5. The inertial mass damping system with adjustable inertial mass coefficient according to claim 3, characterized in that the control unit is a control chip embedded in the flywheel body.

6. The system of claim 3, wherein the control unit is a control terminal located outside the flywheel body.

7. The system of claim 3, wherein a power source of the actuator is embedded inside the flywheel body.

Technical Field

The invention belongs to the field of variable inerter control, and particularly relates to an inerter vibration reduction system with an adjustable inerter coefficient.

Background

The inerter is a structure in which a generated counter force is related to a relative acceleration at two ends, and specifically, the generated force is equal to a product of an inerter coefficient and the relative acceleration, wherein the inerter coefficient is an attribute of the inerter itself, such as a flywheel type inerter, and the inerter coefficient is related to a rotational inertia of the flywheel. The inerter has small mass but can generate great mass effect. Since the invention, the application range of the inerter is continuously expanded, such as TID system, TVMD system and the like, and the inerter system has the greatest advantage that the inerter system can simulate great mass effect and is mainly used for damping stay cables such as cable-stayed bridges and the like.

In engineering, after the inertia mass is installed, the inertia mass coefficient is fixed and cannot be changed, if the inertia mass coefficient needs to be changed, only one inertia mass coefficient can be removed and replaced, time and labor are wasted, people think that the larger the inertia mass coefficient is, the better the inertia mass coefficient is, but the inertia mass can be approximately regarded as a TMD system, the counter effect can be generated sometimes when the TMD system is too large in weight, and the current related research shows that the larger the inertia mass is, the better the inertia mass coefficient is, the inertia mass with the fixed inertia mass coefficient is still in the field of passive control essentially, and the passive control cannot have a particularly good control effect.

Disclosure of Invention

The invention provides an inertia mass damping system with an adjustable inertia mass coefficient, which is used for solving the technical problem that the adjustment of the inertia mass coefficient of the existing inertia mass damping system is time-consuming and labor-consuming.

The technical scheme for solving the technical problems is as follows: an inerter damping system with adjustable inerter coefficient, comprising: the flywheel comprises a flywheel body, a mass block, an actuator, a guide rail, a control unit and a base;

the flywheel main body is arranged on the base; the periphery of the flywheel main body is uniformly connected with a plurality of guide rails which radially extend towards the flywheel main body in a distributed manner, and each guide rail is provided with one mass block; the actuator is arranged on the flywheel main body and used for independently pushing the mass blocks to slide on the guide rails where the mass blocks are respectively located under the control of the control unit, so that the inertial mass vibration reduction system has an actually required inertial mass coefficient, and stepless adjustment of the inertial mass coefficient is realized.

The invention has the beneficial effects that: according to the inertial mass vibration reduction system provided by the invention, according to a control instruction in the control unit, when the inertial mass coefficient is required to be changed, the actuator can be instructed to push the mass block to slide along the guide rail and to be close to or far away from the center of the flywheel, and the mass block can be pushed by the actuator, so that the rotational inertia of the flywheel is changed, and the inertial mass coefficient is changed. Therefore, the inerter damping system can adjust the inerter coefficient at will after being installed, namely the inerter coefficient of the inerter can be adjusted and controlled in an electrodeless manner, and the inerter damping system does not need to be disassembled and installed again in engineering application, and is very convenient.

On the basis of the technical scheme, the invention can be further improved as follows.

Furthermore, each mass block is sleeved and hung on the corresponding guide rail.

The invention has the further beneficial effects that: through the mode of hanging, can guarantee when the flywheel main part rotates, the quality piece can be attached to on the guide rail well, can slide on the guide rail when needing to change the inertia coefficient simultaneously again.

Furthermore, the actuator is embedded in the flywheel main body and independently drives the mass blocks to move so as to control the positions of the mass blocks on the guide rail.

The invention has the further beneficial effects that: the actuator is embedded in the flywheel main body, so that the inertia mass damping system is compact in structure, and the safety of the actuator is ensured.

Further, each mass block corresponds to one actuator; each actuator is connected with the corresponding mass block through the threaded rod so as to realize that the actuator drives the mass block to move.

The invention has the further beneficial effects that: one mass block is connected with one actuator, so that the precise independent control of each mass block is ensured. In addition, the actuator drives the mass block to move through the threaded rod, and particularly the mass block can be pushed to move along the guide rail through clockwise or anticlockwise rotation.

Further, the control unit is a control chip embedded in the flywheel main body.

The invention has the further beneficial effects that: the work of the actuator is controlled in real time through the algorithm input in advance, and the setting mode can enable the inertia mass damping system to be simple in structure and facilitates the actual work of the inertia mass damping system.

Further, the control unit is a control terminal located outside the flywheel main body.

Furthermore, the power supply of the actuator is embedded in the flywheel main body.

Drawings

FIG. 1 is a schematic structural diagram of an inertial mass damping system with adjustable inertial mass coefficient according to an embodiment of the present invention;

fig. 2 is a schematic diagram of an internal structure of a flywheel main body in an inertial mass damping system with an adjustable inertial mass coefficient according to an embodiment of the present invention.

The same reference numbers will be used throughout the drawings to refer to the same or like elements or structures, wherein:

the flywheel comprises a flywheel body 1, a mass block 2, an actuator 3, a guide rail 4, a control unit 5, a base 6, a threaded rod 7 and a power supply 8.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

Example one

An inerter damping system with adjustable inerter coefficient, comprising: a flywheel body 1, a mass block 2, an actuator 3, a guide rail 4, a control unit 5, and a base 6;

the flywheel main body is arranged on the base; the periphery of the flywheel main body is uniformly connected with a plurality of guide rails which radially extend towards the flywheel main body in a distributed manner, each guide rail is provided with a mass block, and the mass blocks can slide along the guide rails and are connected with the actuators; the actuator is arranged on the flywheel main body and used for independently pushing the mass blocks to slide on the guide rails where the mass blocks are located under the control of the control unit, so that the inertial mass vibration reduction system has an actually required inertial mass coefficient, and stepless adjustment of the inertial mass coefficient is realized.

The basic principle of the embodiment is that according to the inertia coefficient calculation formula of the flywheel inertia, the rotational inertia of the system can be changed by changing the position of the mass block on the guide rail, and the inertia coefficient of the inertia is changed after the rotational inertia is changed.

According to the control instruction in the control unit, when the inertial coefficient is required to be changed, the actuator can be commanded to push the mass block to slide along the guide rail to be close to or far away from the center of the flywheel. When the mass block is close to the center of the flywheel, the rotational inertia of the flywheel is reduced, the inertial mass coefficient of the inertial mass is reduced, and when the mass block is far away from the center of the flywheel, the rotational inertia of the wheel is increased, and the inertial mass coefficient of the inertial mass is increased.

The embodiment can utilize the actuator to push the mass block so as to change the rotational inertia of the flywheel to change the inertia coefficient, therefore, the inertia coefficient of the inertia damping system of the embodiment can be adjusted at will after the inertia damping system is installed, namely the inertia coefficient of the inertia can be adjusted and controlled in an electrodeless manner, the inertia damping system is not required to be detached and installed again in engineering application, and the inertia damping system is very convenient and can be used for inhaul cable damping of bridges.

The embodiment can change the inertia of the inertia coefficient in real time, change passive control into active control, and adjust the inertia coefficient in real time according to an algorithm so as to achieve the optimal control effect.

With the structure shown in fig. 1, in the actual work of the inertia mass damping system, the flywheel body is driven to rotate through the threads, so that the damping function is realized.

Preferably, each mass is suspended from its associated guide rail.

Through the mode of hanging, can guarantee when the flywheel main part rotates, the quality piece can be attached to on the guide rail well, can slide on the guide rail when needing to change the inertia coefficient simultaneously again.

The guide rail may be formed by one rod or a plurality of thin rods, and the mass block on the guide rail is hung on each rod in a sleeved manner, as shown in fig. 2, each guide rail is formed by two thin rods.

Preferably, the actuator is embedded in the flywheel main body and independently drives the mass blocks to move so as to control the positions of the mass blocks on the guide rail.

The actuator is embedded in the flywheel main body, so that the inertia mass damping system is compact in structure, and the safety of the actuator is ensured.

Preferably, each mass block corresponds to one actuator; each actuator is connected with its corresponding mass by a threaded rod 7 to realize the movement of the mass driven by the actuator.

As shown in fig. 2, one mass block is connected to one actuator, ensuring precise independent control of each mass block. In addition, the actuator drives the mass block to move through the threaded rod, and particularly the mass block can be pushed to move along the guide rail through clockwise or anticlockwise rotation.

Preferably, the control unit is a control chip embedded in the flywheel main body, the work of the actuator is controlled in real time through an algorithm input in advance, and the setting mode can enable the inertial mass damping system to be simple in structure and facilitates the actual work of the inertial mass damping system.

Preferably, the control unit is a control terminal located outside the flywheel body. The control terminal is adopted in the setting mode, so that the control reliability is high.

Preferably, the power supply 8 of the actuator is embedded in the flywheel main body, and the arrangement mode ensures compact structure and is convenient for the actual work of the inertia vibration reduction system.

It will be understood by those skilled in the art that the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the invention, and that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the present invention.