Vibration damping system

Abstract

To provide a vibration control system capable of adjusting vibration control performance when a change occurs in vibration characteristics of a building.SOLUTION: The vibration control system 80 includes a vibration control device 30 having a weight 32 and a spring 34, a plurality of vibration meters 40 installed in a building 20 provided with the vibration control device 30, a control device 10 that analyzes vibration characteristics of the building 20 measured by the vibration meters 40 and specifies a natural period of the building 20, and an adjustment mechanism 50 capable of adjusting the natural period of the vibration control device 30 according to the specified natural period.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a vibration damping system. [Background technology]

[0002] The following Patent Document 1 describes a soundness assessment system that calculates the natural frequency and damping constant of a building based on frequency analysis using detection values ​​from sensors installed in the building, and calculates the response waveform of the building. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Publication No. 2022-119266 Summary of the Invention [Problem to be solved by the invention]

[0004] The health assessment system in Patent Document 1 relates to health monitoring that identifies the location and extent of damage that occurs in a structure after it is subjected to an external force such as earthquake motion, and diagnoses the health of the structure. However, simply assessing the health makes it difficult to take measures to prepare for future earthquakes if the vibration characteristics of the building change due to an external force such as earthquake motion.

[0005] In consideration of the above, an object of the present invention is to provide a vibration control system that can adjust vibration control performance when changes occur in the vibration characteristics of a building. [Means for solving the problem]

[0006] The vibration control system of claim 1 comprises a vibration control device having a weight and a spring, a plurality of vibration meters installed in a building in which the vibration control device is installed, a control device that analyzes the vibration characteristics of the building measured by the vibration meters and identifies the natural period of the building, and an adjustment mechanism that can adjust the natural period of the vibration control device in accordance with the identified natural period.

[0007] In the vibration control system of claim 1, the control device analyzes the vibration characteristics of the building and identifies the building's natural period. This makes it possible to identify changes in the building's natural period due to earthquakes or changes over time. The adjustment mechanism also makes it possible to adjust the natural period of the vibration control device. For example, by synchronizing the natural period of the vibration control device with the natural period of the building after changes, it is possible to more easily demonstrate vibration control performance. This improves vibration control performance when changes occur in the building's vibration characteristics compared to when the natural period of the vibration control device cannot be adjusted.

[0008] The vibration control system of claim 2 is the vibration control system of claim 1, wherein the vibrometer measures the vibration characteristics at predetermined intervals, and the adjustment mechanism adjusts the natural period of the vibration control device each time the natural period of the building changes.

[0009] The vibration control system of claim 2 can adjust the natural period of the vibration control device as needed in response to changes in the natural period of the building over time and changes in the natural period due to main earthquakes and aftershocks, thereby enabling intermittent optimization of vibration control performance.

[0010] A vibration control system according to a third aspect of the present invention is the vibration control system according to the first or second aspect of the present invention, wherein the natural period of the vibration control device is adjusted by increasing or decreasing the weight of the weight.

[0011] In the vibration control system of claim 3, the natural period of the vibration control device is adjusted by increasing or decreasing the weight of the weight. The natural period of the vibration control device can be adjusted by increasing or decreasing the weight of the weight or the stiffness of the spring, but a mechanism for increasing or decreasing the weight of the weight can be realized more simply than a mechanism for increasing or decreasing the stiffness of the spring.

[0012] A vibration control system according to a fourth aspect of the present invention is the vibration control system according to the third aspect, wherein the weight is formed by a water tank, and the weight of the weight is adjusted by increasing or decreasing the amount of water.

[0013] In the vibration control system of claim 4, the weight of the sinker is adjusted by increasing or decreasing the amount of water. By increasing or decreasing the amount of water, the weight of the sinker can be adjusted steplessly, unlike by increasing or decreasing the amount of steel plate, etc.

[0014] A vibration control system according to claim 5 is the vibration control system according to claim 1 or 2, wherein the natural period of the vibration control device is adjusted by increasing or decreasing the stiffness of the spring.

[0015] In the vibration control system of claim 5, even if the weight of the weight cannot be changed, the natural period of the vibration control device can be adjusted by increasing or decreasing the stiffness of the spring. [Effects of the Invention]

[0016] According to the present invention, vibration control performance can be adjusted when changes occur in the vibration characteristics of a building. [Brief explanation of the drawings]

[0017] [Figure 1] 1 is an elevation view showing an outline of a vibration control system according to an embodiment of the present invention. [Figure 2] (A) is a conceptual diagram showing the arrangement of vibration control devices in a vibration control system that can handle first-mode vibrations, (B) is a conceptual diagram showing the arrangement of vibration control devices in a vibration control system that can handle second-mode vibrations, and (C) is a conceptual diagram showing the arrangement of vibration control devices in a vibration control system that can handle third-mode vibrations. [Figure 3] FIG. 1A is a perspective view showing an example in which the weight of the vibration control system is formed by a single water tank, and FIG. 1B is a perspective view showing an example in which partitions are provided inside the water tank to form a plurality of water tanks. [Figure 4] FIG. 2 is a block diagram showing the electrical configuration of a control device in the vibration damping system. [Figure 5] FIG. 2 is a block diagram showing the functional configuration of a control device in the vibration control system. [Figure 6] FIG. 10 is a flowchart showing an example of a natural period adjustment process in the vibration control system. [Figure 7] FIG. 10 is a flowchart showing another example of the natural period adjustment process in the vibration control system. DETAILED DESCRIPTION OF THE INVENTION

[0018] Hereinafter, a vibration control system according to an embodiment of the present invention will be described with reference to the drawings. Components indicated by the same reference numerals in the various drawings are the same components. However, unless otherwise specified in the specification, each component is not limited to one, and multiple components may be present.

[0019] Furthermore, descriptions of overlapping configurations and symbols in each drawing may be omitted. Note that the present disclosure is not limited to the following embodiments, and may be implemented by making appropriate modifications, such as omitting configurations, replacing them with different configurations, or combining one embodiment with various modified examples, within the scope of the purpose of the present disclosure.

[0020] <Vibration control system> As shown in Fig. 1, a vibration control system 80 according to an embodiment of the present invention is applied to a building 20. The building 20 is, for example, a medium- to high-rise building made of reinforced concrete or steel-framed reinforced concrete.

[0021] The vibration damping system 80 includes a control device 10, a vibration damping device 30, a vibration meter 40, and an adjustment mechanism 50.

[0022] (Vibration control device) The vibration damping device 30 is a tuned mass damper (TMD) that includes a weight 32, a spring 34, and a damper 36. The vibration damping device 30 is installed on a floor of the building 20 that is prone to shaking.

[0023] The "susceptible floor" refers to, for example, the top floor or a floor near the top floor of the building 20 when the building 20 experiences vibration in the first mode due to an earthquake. In other words, it refers to the floor or other floors in the building 20 where the amplitude of vibration in the first mode is the largest.

[0024] As shown in Figure 2(A), the vibration damping device 30 can be installed on the top floor or a floor near the top floor of the building 20 to damp vibrations in the first mode. It can also be installed on an intermediate floor where the amplitude of vibrations in the second mode increases to damp vibrations in the second mode, as shown in Figure 2(B). Alternatively, as shown in Figure 2(C), it can be installed on an intermediate floor where the amplitude of vibrations in the third mode increases to damp vibrations in the third mode.

[0025] In this way, the number of vibration damping devices 30 and the floors on which they are arranged are not particularly limited, and can be selected appropriately depending on the vibrations to be damped.

[0026] The weight of the weight 32 of the vibration damping device 30 is adjustable. Specifically, the weight 32 is made up of a water tank, and the weight can be adjusted by increasing or decreasing the amount of water. The method for adjusting the amount of water will be described later.

[0027] The water tank forming weight 32 may be formed so that water is stored in a single space without any partitions as shown in Fig. 3(A), or may be formed so that water is stored in multiple spaces with partitions 32A as shown in Fig. 3(B). The water tank is preferably formed airtight so that the water stored inside does not easily evaporate.

[0028] The spring 34 shown in FIG. 1 is an elastic body that supports the weight 32 against the building 20, and as an example, is formed by a plurality of laminated rubber members that are installed on the slab of the building 20 and support the weight 32 from below.

[0029] The laminated rubber is fixed to both the slab of the building 20 and the weight 32 with bolts via flanges or the like (not shown), supports the weight 32 so that it can move horizontally, and undergoes shear deformation as the weight 32 moves horizontally.

[0030] The damper 36 is a mechanism for damping the vibration of the weight 32, and is, for example, an oil damper.

[0031] (vibration meter) The vibration meters 40 are devices that measure the vibration characteristics of the building 20, and are installed on the floor where the vibration damping devices 30 are installed, the lowest floor, and an intermediate floor. It is sufficient that the vibration meters 40 are installed in at least two locations: on a floor near the lowest floor and on a floor near the floor where the vibration damping devices 30 are installed.

[0032] Each vibrometer 40 measures the vibration characteristics of the floor on which the vibrometer 40 is installed. The vibration characteristics measured by the vibrometer 40 include, for example, the displacement, velocity, acceleration, and changes therein over time of the floor.

[0033] (adjustment mechanism) The adjustment mechanism 50 can adjust the natural period of the vibration damping device 30. For example, the natural period of the vibration damping device 30 can be adjusted by increasing or decreasing the weight of the weight 32. For this purpose, the adjustment mechanism 50 is provided with a water supply valve 52 and a water drain valve 54.

[0034] The water supply valve 52 is an electromagnetic valve that is provided on the water supply pipe S connected to the water tank that forms the sinker 32 and can start and stop the supply of tap water to the water tank. The water supply pipe S is a branch pipe of the water supply pipe that supplies tap water to various parts of the building 20.

[0035] The drain valve 54 is an electromagnetic valve that is provided in the drain pipe D connected to the water tank that forms the weight 32, and can discharge and stop the discharge of tap water from the water tank. The drain pipe D is a branch pipe connected to a drain pipe that carries wastewater from the building 20 to a sewer or the like.

[0036] (Control device) The control device 10 analyzes the vibration characteristics of the building 20 measured by the vibration meter 40 and identifies the natural period of the building 20. The control device 10 also controls the water supply valve 52 and the drain valve 54 serving as the adjustment mechanism 50 to adjust the natural period of the vibration control device 30 to a period corresponding to the identified natural period.

[0037] (Electrical configuration of the control device) 4, the control device 10 includes a CPU 11, a memory 12 as a temporary storage area, a non-volatile storage unit 13, an input unit 14, a display unit 15 such as a liquid crystal display, a medium read / write device (R / W) 16, a communication interface (I / F) unit 18, and an external I / F unit 19. The CPU 11, memory 12, storage unit 13, input unit 14, display unit 15, medium read / write device 16, communication I / F unit 18, and external I / F unit 19 are connected to one another via a bus B1.

[0038] The CPU 11 controls the overall operation of the control device 10. The medium reading / writing device 16 reads information written in the recording medium 17 and writes information to the recording medium 17. The communication I / F unit 18 is an interface for communicatively connecting the control device to, for example, a server provided outside the control device 10 or various terminals used by users. The communication I / F unit 18 uses communication standards such as Wi-Fi (registered trademark), Bluetooth (registered trademark), and LAN (Local Area Network).

[0039] (Storage part) The storage unit 13 is realized by an HDD (Hard Disk Drive), an SSD (Solid State Drive), a flash memory, or the like. An information processing program 13A is stored in the storage unit 13 as a storage medium. The information processing program 13A is stored in the storage unit 13 when a recording medium 17 on which the information processing program 13A is written is set in the medium reading and writing device 16 and the medium reading and writing device 16 reads the information processing program 13A from the recording medium 17. The CPU 11 reads the information processing program 13A from the storage unit 13, expands it in the memory 12, and sequentially executes the processes of the information processing program 13A.

[0040] (Input section) The input unit 14 is used to input various types of information. As an example, the input unit 14 is used by an administrator of the information processing system to execute operations for starting and ending the information processing program 13A.

[0041] (Display) The display unit 15 is used to display various types of information. For example, the display unit 15 displays information for starting and ending the information processing program 13A.

[0042] (Functional configuration of the control device) Next, the functional configuration of the control device 10 according to this embodiment will be described with reference to Fig. 5. The control device 10 includes an acquisition unit 11A, an analysis unit 11B, and a control unit 11C. The CPU 11 of the control device 10 executes an information processing program 13A to function as the acquisition unit 11A, the analysis unit 11B, and the control unit 11C. The control device 10 may be connected to the vibration meter 40, the water supply valve 52, and the drain valve 54 via either the communication I / F unit 18 or the external I / F unit 19.

[0043] (Acquisition Department) The acquisition unit 11A acquires the vibration characteristics of the building measured by each vibration meter 40.

[0044] (Analysis Department) The analysis unit 11B analyzes the vibration characteristics of the building 20 acquired by the acquisition unit 11A, and identifies the natural period of the building 20. The analysis unit 11B derives a transfer function from the records of the vibration characteristics of the upper and lower floors of the building 20, and identifies the natural period of the building 20.

[0045] (Control unit) The control unit 11C adjusts the natural period of the vibration damping device 30 in accordance with the natural period of the building 20 identified by the analysis unit 11B. The control unit 11C adjusts the natural period of the vibration damping device 30 so that the natural period approaches the natural period of the building 20.

[0046] For example, when it is desired to suppress vibrations of the first mode of the building 20, the control unit 11C adjusts the natural period of the vibration damping device 30 so that it approaches the natural period of the first mode vibration of the building 20. Similarly, when it is desired to suppress vibrations of the second, third, ... modes of the building 20, the control unit 11C adjusts the natural period of the vibration damping device 30 so that it approaches the natural period of the building 20 so that it approaches the natural period of the second, third, ... modes of vibration of the building 20.

[0047] Specifically, control unit 11C controls water supply valve 52 and drain valve 54 to adjust the amount of water in weight 32. If water supply valve 52 is opened and drain valve 54 is closed, the amount of water in weight 32 increases, the weight becomes heavier, and the natural period becomes longer. On the other hand, if water supply valve 52 is closed and drain valve 54 is opened, the amount of water in weight 32 decreases, the weight becomes lighter, and the natural period becomes shorter. In this way, the weight of weight 32 is changed and the natural period of vibration damping device 30 is adjusted.

[0048] <Natural period adjustment process 1> The CPU 11 of the control device 10 in the vibration control system 80 starts the "natural period adjustment process 1" shown in FIG. 6 in response to an operation or the like via the input unit 14 by an administrator or the like.

[0049] The natural period of the building 20 may change over time regardless of whether an earthquake or the like has occurred. The natural period adjustment process 1 shown in this figure is a process for adjusting the natural period of the vibration control device 30 in response to such changes in the natural period. In other words, according to this aspect, the natural period of the vibration control device 30 can be adjusted every time the natural period of the building 20 changes, regardless of the magnitude of the change.

[0050] When the natural period adjustment process 1 is executed, in step S102, the CPU 11 acquires and analyzes the vibration characteristics of the building 20 from the vibration meter 40 to identify the natural period of the building 20. After step S102, the process proceeds to step S104.

[0051] In step S102, if the vibration is so small that the natural period of the building 20 cannot be identified, the natural period of the building 20 as designed may be used as the natural period identified here.

[0052] In step S104, the CPU 11 waits for a predetermined time to elapse, and when the predetermined time has elapsed, the process proceeds to step S106.

[0053] In step S106, the CPU 11 acquires and analyzes the vibration characteristics of the building 20 from each vibrometer 40, and identifies the natural period of the building 20 (the natural period of the building including the weight 32 of the vibration damping device 30). After step S106, the process proceeds to step S108.

[0054] In step S108, the CPU 11 determines whether the natural period of the building 20 identified in step S106 has fluctuated with respect to the natural period identified in step S102. If the determination in step S108 is affirmative, the process proceeds to step S110. On the other hand, if the determination in step S108 is negative, the process returns to step S104.

[0055] When determining whether the natural period has changed, a threshold value may be used to determine, for example, whether the natural period has changed by more than a certain number of seconds or by more than a certain percentage.

[0056] In step S110, the CPU 11 controls the water supply valve 52 or the water drain valve 54 to adjust the natural period of the vibration damping device 30. After step S110, the process proceeds to step S112.

[0057] In step S112, the CPU 11 determines whether or not the end timing has arrived. The end timing arrives in response to an operation by an administrator or the like via the input unit 14. If the determination in step S112 is affirmative, the natural period adjustment process 1 is terminated. On the other hand, if the determination in step S112 is negative, the process returns to step S104.

[0058] In the judgment process of step S108 after returning to step S104, it is determined whether the natural period of the building 20 identified in step S106 after returning has changed from the natural period of the building 20 identified in step S106 immediately before returning.

[0059] <Natural period adjustment process 2> The CPU 11 of the control device 10 in the vibration control system 80 starts the "natural period adjustment process 2" shown in FIG. 7 in response to an operation or the like via the input unit 14 by an administrator or the like.

[0060] The natural period of the building 20 may change significantly due to an earthquake or the like. The natural period adjustment process 2 shown in this figure is a process for adjusting the natural period of the vibration control device 30 in response to such changes in the natural period. In other words, according to this aspect, the natural period of the vibration control device 30 can be adjusted every time the natural period of the building 20 changes significantly.

[0061] The natural period adjustment process 1 and the natural period adjustment process 2 may be executed independently or in parallel.

[0062] When the natural period adjustment process 2 is executed, in step S202, the CPU 11 acquires and analyzes the vibration characteristics of the building from the vibration meter 40 to identify the natural period of the building 20. After step S202, the process proceeds to step S204.

[0063] In step S202, if the vibration is so small that the natural period of the building 20 cannot be identified, the natural period of the building 20 as designed may be used as the natural period identified here.

[0064] In step S204, the CPU 11 determines whether or not an earthquake of a predetermined seismic intensity or greater has been detected. If the determination in step S204 is affirmative, the process proceeds to step S206. If the determination in step S204 is negative, step S204 is repeated.

[0065] In step S206, the CPU 11 acquires and analyzes the vibration characteristics of the building 20 from each vibrometer 40, and identifies the natural period of the building 20 (the natural period of the building including the weight 32 of the vibration damping device 30). After step S206, the process proceeds to step S208.

[0066] In step S208, the CPU 11 determines whether the natural period of the building 20 identified in step S206 has fluctuated with respect to the natural period identified in step S202. If the determination in step S208 is affirmative, the process proceeds to step S210. On the other hand, if the determination in step S208 is negative, the process returns to step S204.

[0067] When determining whether the natural period has changed, a threshold value may be used to determine, for example, whether the natural period has changed by more than a certain number of seconds or by more than a certain percentage.

[0068] In step S210, the CPU 11 controls the water supply valve 52 or the drain valve 54 to adjust the natural period of the vibration damping device 30. After step S210, the process proceeds to step S212.

[0069] In step S212, the CPU 11 determines whether or not the end timing has arrived. The end timing arrives in response to an operation by an administrator or the like via the input unit 14. If the determination in step S212 is affirmative, the natural period adjustment process 2 is terminated. On the other hand, if the determination in step S212 is negative, the process returns to step S204.

[0070] In the judgment process of step S208 after returning to step S204, it is determined whether the natural period of the building 20 identified in step S206 after returning has changed from the natural period of the building 20 identified in step S206 immediately before returning.

[0071] <Action and effect> In the vibration control system 80 according to the embodiment of the present invention, the control device 10 analyzes the vibration characteristics of the building 20 and identifies the natural period of the building 20. This makes it possible to identify changes in the natural period of the building 20 due to earthquakes and changes over time.

[0072] Furthermore, the natural period of the vibration control device 30 can be adjusted by the adjustment mechanism 50. For example, by synchronizing the natural period of the vibration control device 30 with the natural period of the building 20 after a change, it is possible to make it easier to demonstrate vibration control performance. This improves vibration control performance when a change occurs in the vibration characteristics of the building 20 compared to when the natural period of the vibration control device 30 is not adjusted.

[0073] Furthermore, according to the vibration control system 80 according to the embodiment of the present invention, the natural period of the vibration control device 30 is adjusted by the adjustment mechanism 50 every time the natural period of the building 20 changes.

[0074] This allows the natural period of the vibration control device to be adjusted as needed in response to secular changes in the natural period of the building 20 (natural period adjustment process 1). Also, the natural period of the vibration control device can be adjusted as needed in response to changes in the natural period due to the main shock and aftershocks of an earthquake (natural period adjustment process 2). This allows for intermittent optimization of vibration control performance.

[0075] Furthermore, according to the vibration damping system 80 of the embodiment of the present invention, the natural period of the vibration damping device 30 is adjusted by increasing or decreasing the weight of the weight 32. The natural period of the vibration damping device 30 can also be adjusted by increasing or decreasing the stiffness of the spring 34, but a mechanism for increasing or decreasing the weight of the weight 32 can be realized more simply than a mechanism for increasing or decreasing the stiffness of the spring 34.

[0076] For example, as in the above embodiment, the weight of the sinker 32 can be adjusted by forming the sinker 32 from a water tank and increasing or decreasing the amount of water. Furthermore, with this weight adjustment method, the weight of the sinker can be adjusted in a continuous manner, compared to an embodiment in which the sinker 32 is formed by stacking steel plates or the like and the steel plates are increased or decreased.

[0077] <Other embodiments> In the above embodiment, water is supplied to and drained from the sinker 32 via a water supply pipe S and a drain pipe D connected to the water supply and drainage path of the building 20, but the present invention is not limited to this embodiment. For example, a water tank that stores water to be supplied to and drained from the sinker 32 may be placed in the building 20, and water may be supplied to and drained from the sinker 32 from this water tank.

[0078] In the above embodiment, the natural period of the vibration damping device 30 is adjusted by increasing or decreasing the weight of the weight 32, but the present invention is not limited to this. For example, as described above, the natural period of the vibration damping device 30 may be adjusted by increasing or decreasing the stiffness of the spring 34.

[0079] The stiffness of the spring 34 can be adjusted by removing any of the multiple laminated rubbers provided, or by installing laminated rubber. When a laminated rubber is removed, the stiffness of the spring 34 decreases and the natural period becomes longer. On the other hand, when a laminated rubber is installed, the stiffness of the spring 34 increases and the natural period becomes shorter.

[0080] The rubber bearing can be detached or attached by removing or attaching the bolts that secure the rubber bearing to the slab or weight 32 of the building 20 .

[0081] Such bolt attachment and detachment may be performed mechanically using a device capable of attaching and detaching bolts, or may be performed manually. The "adjustment mechanism" in this invention also includes a mechanism that can manually increase or decrease weight.

[0082] In the above embodiment, the weight 32 is formed by a water tank, but the present invention is not limited to this. For example, the weight 32 may be formed by stacking steel plates or the like. In this case, the weight of the weight 32 can be adjusted by increasing or decreasing the number of steel plates.

[0083] The increase or decrease of the steel plate may be performed mechanically, for example, by using a device with an arm that grips the steel plate, or may be performed manually.

[0084] Furthermore, in the above embodiment, for example, the following various processors can be used as the hardware structure of the processing unit that executes each process of the acquisition unit 11A, the analysis unit 11B, and the control unit 11C. The above various processors include, as described above, a CPU, which is a general-purpose processor that executes software (programs) and functions as a processing unit, as well as dedicated electrical circuits that are processors having a circuit configuration specifically designed to execute specific processes, such as a programmable logic device (PLD), which is a processor whose circuit configuration can be changed after manufacture, such as an FPGA (Field-Programmable Gate Array), and an ASIC (Application Specific Integrated Circuit).

[0085] The processing unit may be configured with one of these various processors, or may be configured with a combination of two or more processors of the same or different types (for example, a combination of multiple FPGAs, or a combination of a CPU and an FPGA). The processing unit may also be configured with a single processor. Some or all of these processors may be configured on the cloud. At least each of the processes described in the above embodiments may be executed by a processor on the cloud.

[0086] Examples of configuring a processing unit with a single processor include, first, a form in which one processor is configured with a combination of one or more CPUs and software, and this processor functions as the processing unit, as typified by computers such as client and server. Second, a form in which a processor is used to realize the functions of the entire system, including the processing unit, on a single IC (Integrated Circuit) chip, as typified by systems on chips (SoCs). In this way, the processing unit is configured using one or more of the above-mentioned various processors as a hardware structure.

[0087] Furthermore, the hardware structure of these various processors may be, more specifically, an electric circuit that combines circuit elements such as semiconductor elements. As such, the present disclosure may be implemented in various ways. [Explanation of symbols]

[0088] 10 Control device 20 Buildings 30 Vibration control device 32 weight 40 Vibration meter 50 Adjustment mechanism 52 Water supply valve (adjustment mechanism) 54 Drain valve (adjustment mechanism) 80 Vibration Control System

Claims

1. a vibration damping device having a weight and a spring; a plurality of vibration meters installed in a building in which the vibration control device is installed; a control device that analyzes the vibration characteristics of the building measured by the vibration meter and identifies the natural period of the building; an adjustment mechanism capable of adjusting the natural period of the vibration damping device in accordance with the identified natural period; Equipped with Vibration control system.

2. the vibrometer measures the vibration characteristics at predetermined intervals; adjusting the natural period of the vibration control device by the adjustment mechanism every time the natural period of the building changes; The vibration control system of claim 1 .

3. The natural period of the vibration damping device is Adjust by increasing or decreasing the weight of the weight.

3. A vibration damping system according to claim 1 or 2.

4. The sinker is constituted by a water tank, and the weight of the sinker is adjusted by increasing or decreasing the amount of water. The vibration control system of claim 3 .

5. The natural period of the vibration damping device is Adjusting the stiffness of the spring by increasing or decreasing it; 3. A vibration damping system according to claim 1 or 2.

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