JP2008248490A - Active damper for building structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a structurally-new active damper for a building structure, which can obtain an excellent active vibration control effect by efficiently exerting an exciting force, generated by an electromagnetic excitation means, on a mass member in a specific direction to be subjected to vibration control, and which can avoid a malfunction such as damage on the electromagnetic excitation means, caused by the vibrational displacement of the mass member in a direction except the specific direction. <P>SOLUTION: A plurality of rubber mounts 18, in which the spring characteristics of an elastic rubber body 26 of a main body in the groove direction of elongation of a second mounting member 24 wholly formed like a groove are set smaller than spring characteristics in a direction orthogonal to the groove direction, are mounted on the mass member 16 in a state in which the second mounting members 24 are aligned with one another in the same direction. The exciting force, which is generated by the electromagnetic excitation means 14, is exerted on the mass member 16 in the groove direction of the elongation of the second mounting member 24. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a vibration damping device for a building structure that constitutes a secondary vibration system for a building structure such as a house and suppresses vibration in the building structure that is a main vibration system, and in particular, is applied to a mass member in a horizontal direction. The present invention relates to an active vibration damping device for a building structure that can obtain an active vibration damping effect by applying force.

  In building structures such as ordinary houses and offices, horizontal vibrations may occur due to external forces such as traffic vibrations acting as excitation forces. In particular, in recent years, ordinary houses, etc., are becoming more or less two-story and three-story buildings due to wooden structures and lightweight steel structures, etc., and because of these structures, vibrations on the second and third floors tend to be large. In addition, slight vibration due to traffic vibration has become a problem as a cause of unpleasant vibration, unpleasant noise at the time of sleeping or working, for example.

  By the way, as an active type damping device which is a kind of damping device for a building structure, in Patent Document 1 (Japanese Patent Laid-Open No. 2-300478), Patent Document 2 (Japanese Patent Laid-Open No. 9-41714), and the like. A structure has been proposed in which an additional mass member supported by a sliding mechanism such as a linear bearing with respect to a building structure is relatively displaced by a ball screw mechanism or the like driven by an electric motor. Yes.

  However, these conventional vibration control devices for building structures were originally developed for the purpose of reducing vibration during earthquakes in high-rise buildings, and are very large-scale and small building structures such as ordinary houses and offices. It was not suitable for use. In particular, if the frequency of operation is low, such as vibration control during earthquakes in high-rise buildings, it will not be a big problem, but if it is operated almost constantly, such as vibration control of traffic vibration, fatigue and wear of the sliding mechanism and ball screw mechanism will occur. There is also a problem that is likely to become a very big problem.

  Therefore, the applicant previously described in Patent Document 3 (Patent No. 375926) as an active vibration control device suitable for a small building such as a general house as a mass member elastically supported by a building structure. On the other hand, an active vibration control device for building structures with a structure in which a horizontal excitation force is applied by a vibration means such as an electromagnetic actuator was proposed.

  In the active vibration damping device according to the prior application, by supporting the mass member with the rubber mount, the resistance at the time of the vibration displacement of the mass member is reduced, and the structure of the device can be simplified. . In addition, by adopting electromagnetic excitation means such as an electromagnetic actuator as the excitation means for exciting the mass member, it is easy to control the excitation of the phase, amplitude, etc., and to reduce the size of the apparatus. Is possible. In addition, since the vibration means is supported by the building structure, the arrangement state of the vibration means can be stabilized, and the vibration force can be stably applied to the mass member.

  However, when the inventor repeated further experiments and examinations, it was found that there is still room for improvement in the active vibration damping device for building structures described in Patent Document 3.

  That is, the building structure is vibrated not only in a specific direction but also in other directions, and the direction of the vibration generated in the building structure is influenced by an external excitation force such as traffic vibration. Depending on the direction and the like, the vibration generated in a plurality of directions may change due to coupling, etc., so the active vibration damping device for a building structure described in Patent Document 3 described above As described above, in the structure in which the mass member is elastically supported by the rubber mount with respect to the building structure, the mass member is easily displaced in a plurality of directions.

  Therefore, in the case where an electromagnetic actuator is employed as the vibration means as in the active vibration control device for building structures described in Patent Document 3, the mass member is vibrated by the vibration means. When vibrating in a direction different from the direction, there are the following problems. That is, when an electromagnetic actuator is used as the vibration means, a driving force is generated in a magnetic gap formed between the output shaft and the fixed housing. When an external force having a component perpendicular to the axis is exerted, for example, the output shaft may be interfered by being squeezed against the fixed housing, which may cause problems such as damage to the electromagnetic actuator. In addition, there is a concern about a decrease in durability of the electromagnetic actuator.

  In order to deal with such a problem, it is conceivable to employ a linear bearing or the like that limits the displacement direction of the mass member in one direction as described in Patent Documents 1 and 2, for example. However, such a linear bearing is liable to generate abnormal noise when the mass member is displaced, and a resistance force such as a large friction is generated against the displacement of the mass member, so that a reduction in energy efficiency is inevitable. Therefore, the adoption of such a mechanical guide mechanism such as a linear bearing is not practical in a vibration control device for a small building such as a general house.

JP-A-2-3000047 JP 9-41714 A Japanese Patent No. 3752926

  Here, the present invention has been made in the background as described above, and the problem to be solved is to efficiently apply the excitation force by the electromagnetic excitation means in a specific direction to be controlled. It is possible to obtain an excellent active damping effect on the mass member, and avoid problems such as damage to the electromagnetic excitation means due to the vibration displacement of the mass member in a direction other than the specific direction. An object of the present invention is to provide an active vibration damping device for a building structure having a novel structure.

  Hereinafter, the aspect of this invention made | formed in order to solve such a subject is described. In addition, the component employ | adopted in each aspect as described below is employable by arbitrary combinations as much as possible.

  In the present invention, a dynamic vibration absorber is configured by elastically supporting a mass member with a plurality of rubber mounts on a building structure, and a vibration direction to be damped in the building structure In an active vibration damping device for a building structure provided with a vibration means for applying a horizontal vibration force to the mass member, a first attachment member attached to one of the mass member and the building structure, and the mass A member and a second attachment member attached to the other of the building structure are arranged opposite to each other in the vertical direction, and a main rubber elastic body is disposed between the opposing surfaces of the first attachment member and the second attachment member. While the first mounting member and the second mounting member are elastically connected to each other, the bottom wall portion extending in the horizontal direction perpendicular to the opposing direction to the first mounting member in the second mounting member and the bottom Both ends of the wall in the width direction And a pair of vertical wall portions extending toward the first mounting member side, the second mounting member has a groove shape as a whole, and the first mounting member and the second mounting member Between the opposing surfaces in the vertical direction with the bottom wall portion and the opposing surfaces on both sides in the horizontal direction between the pair of vertical wall portions in the first mounting member and the second mounting member, respectively. A horizontal plate portion that extends in the horizontal direction between the vertical facing surfaces of the first mounting member and the bottom wall portion of the second mounting member, and both width direction ends of the horizontal plate portion. A pair of vertical plate portions extending from the first portion toward the first mounting member side and extending between opposing surfaces on both sides in the horizontal direction of the first mounting member and the pair of vertical wall portions in the second mounting member; A groove-shaped intermediate restraint plate is provided as a whole, and the first mounting member and the second mounting member A rubber mount is configured with a structure in which an intermediate restraint plate is fixed to the main rubber elastic body between the opposing surfaces, and a plurality of such rubber mounts each have a groove-shaped second mounting member in the same direction. While being arranged and mounted on the mass member, electromagnetic vibration means are employed as the vibration means, and a support member for supporting the electromagnetic vibration means on the building structure is provided, and a groove is provided in the rubber mount. It is characterized in that the exciting force by the electromagnetic exciting means is exerted on the mass member in the groove direction in which the second mounting member having the shape extends.

  In the active vibration damping device for a building structure having such a structure according to the present invention, each of the plurality of rubber mounts includes a first mounting member and a second mounting member having a groove shape as a whole. It is structured to be elastically connected by the main rubber elastic body, and an intermediate constraining plate having a groove shape as a whole is fixed to the main rubber elastic body between the opposing surfaces of the first mounting member and the second mounting member. In this state, the lateral wall portion of the intermediate restraint plate spreads horizontally between the vertical facing surfaces of the first attachment member and the bottom wall portion of the second attachment member, and in the intermediate restraint plate. Since the pair of vertical plate portions extends between the opposing surfaces on both sides in the horizontal direction of the pair of vertical wall portions of the first mounting member and the second mounting member, Spring stiffness in the direction of the groove in which the mounting member extends More than the spring rigidity in the opposing direction (vertical direction) of the bottom wall portion of the first mounting member and the second mounting member and in the opposing direction (horizontal direction) of the pair of vertical wall portions of the second mounting member It becomes possible to make it sufficiently small.

  Accordingly, in the present invention, each of the plurality of rubber mounts is mounted on the mass member with the second mounting member having a groove shape as a whole aligned in the same direction, and the second mounting Since the excitation force by the electromagnetic excitation means is applied to the mass member in the groove direction in which the member extends, the groove direction in which the second mounting member extends matches the direction of vibration to be damped. As a result, it is possible to efficiently exert the excitation force by the electromagnetic excitation means on the mass member and obtain an excellent vibration damping effect.

  Further, in directions other than the direction of vibration to be damped (the groove direction in which the second mounting member extends), the spring rigidity of the main rubber elastic body is sufficiently increased so that the vibration displacement of the mass member is suppressed. Therefore, problems such as damage to the electromagnetic excitation means due to vibration displacement of the mass member in directions other than the direction of vibration to be damped (the groove direction in which the second mounting member extends) are avoided. It becomes possible.

  In addition, in the present invention, since the support member for supporting the electromagnetic vibration means on the building structure is provided, it is possible to stabilize the arrangement state of the electromagnetic vibration means. As a result, the excitation force by the electromagnetic excitation means can be stably applied to the mass member.

  In the present invention, in the main rubber elastic body, a straight portion penetrating in the groove direction in which the second attachment member extends may be formed. Thereby, while reducing the spring rigidity of the main rubber elastic body in the groove direction in which the second attachment member extends, the direction orthogonal to the groove direction in which the second attachment member extends, specifically, the first attachment member Adjusting the spring rigidity of the main rubber elastic body in the opposing direction (vertical direction) to the bottom wall portion of the second mounting member and in the opposing direction (horizontal direction) of the pair of vertical wall portions in the second mounting member Is possible.

  Moreover, in this invention, the restraint protrusion which protrudes in a main body rubber elastic body may be formed in at least one of a 2nd attachment member and an intermediate restraint board. Thereby, while reducing the spring rigidity of the main rubber elastic body in the groove direction in which the second attachment member extends, the direction orthogonal to the groove direction in which the second attachment member extends, specifically, the first attachment member The spring rigidity of the main rubber elastic body is set to be large in the facing direction (vertical direction) of the second mounting member to the bottom wall portion and in the facing direction (horizontal direction) of the pair of vertical wall portions of the second mounting member. It becomes possible.

  Furthermore, in the present invention, the reaction force of the excitation force exerted on the mass member by the electromagnetic excitation means is applied to the building structure via the support member, and the vibration is suppressed in the building structure. The natural frequency of the dynamic vibration absorber is set to the low frequency side with respect to the power frequency, and the frequency of the exciting force exerted on the mass member is controlled by the electromagnetic vibration means. Excitation control that controls the electromagnetic excitation means to exert an excitation force on the mass member at a frequency that is higher than the natural frequency of the absorber and that corresponds to the vibration frequency to be controlled in the building structure. Desirably means are provided. Thereby, even when the frequency of the vibration to be damped changes, it is possible to follow the change in the frequency and obtain a stable damping effect.

In the present invention, in the vibration control means, the frequency f of the vibration force exerted on the mass member by the electromagnetic vibration means is f ₀ +0.5 Hz with respect to the natural frequency f ₀ of the dynamic vibration absorber. It is desirable that the frequency is set to f ₀ × 2 Hz or less. As a result, even when the frequency of the vibration to be damped in the building structure is changed, a more stable excitation force (that is, active damping effect) can be more efficiently applied to the building structure. It becomes possible. In addition, although the vibration which becomes a problem in a building structure changes with structures, such as a building structure and a support substrate, generally, it is produced in a comparatively low frequency range of 10 Hz or less.

  Furthermore, in the present invention, the vibration detection means for detecting the vibration of the building structure, and the operation control signal of the electromagnetic excitation means based on the reference signal corresponding to the vibration of the building structure detected by the vibration detection means. It is desirable that the vibration control means includes a control signal generation means for generating. As a result, it is possible to quickly cope with a change in the frequency of vibration, which is a problem in a building structure.

  Hereinafter, in order to clarify the present invention more specifically, embodiments of the present invention will be described in detail with reference to the drawings.

  First, FIG. 1 and FIG. 2 show an overall schematic configuration of an active vibration damping device 10 for a general house as an active vibration damping device for a building structure according to an embodiment of the present invention. Such an active vibration damping device 10 itself includes a dynamic vibration absorber 12 that constitutes a secondary vibration system for a building structure (main vibration system) (not shown), and a horizontal vibration force applied to the dynamic vibration absorber 12. An electromagnetic exciter 14 as an electromagnetic exciting means (exciting means) is provided. Then, by applying an excitation force corresponding to the vibration to be damped in the building structure to the sub-vibration system (dynamic vibration absorber 12) by the electromagnetic exciter 14, the vibration in the building structure is canceled as a whole. It is designed to suppress interference or interference.

  More specifically, in the dynamic vibration absorber 12, the mass member 16 is elastically supported by a plurality of (four in the present embodiment) rubber mounts 18 with respect to the structure material of a general house as a building structure. It is constituted by.

  The mass member 16 is formed of a high specific gravity material such as iron-based metal, and has a rectangular block shape as a whole in the present embodiment. Accordingly, in the present embodiment, the mass member 16 is configured by superimposing an appropriate number of rectangular plate-shaped metal mass plates 20 and integrally fixing them with bolts, rivets, welding, or the like (not shown). . Thereby, in the mass member 16 of this embodiment, it can respond easily to the magnitude | size of the mass of the building structure used as a damping | damping object by adjusting the number and plate | board thickness of the metal mass plate 20 to overlap. It is possible. In order to obtain an effective damping effect, it is desirable to set the mass of the mass member 16 to about 5% with respect to the mass of the building structure to be damped. The vibration effect can be expected.

  Further, as shown in FIGS. 3 and 4, the rubber mount 18 includes a first mounting bracket 22 as a first mounting member and a second mounting bracket 24 as a second mounting member. The elastic body 26 is elastically connected.

  More specifically, the first mounting bracket 22 has a truncated conical block shape as a whole, and a large-diameter outer peripheral surface has a ring projecting radially outward over the entire circumference. A protrusion 28 is provided, and a fixing bolt 30 protruding upward is provided on the upper surface thereof. The fixing bolt 30 is screwed into a bolt hole (not shown) provided in the mass member 16, so that the first mounting bracket 22 is attached to the mass member 16.

  On the other hand, the second mounting bracket 24 has a structure in which vertical wall portions 34, 34 projecting to one side in the plate thickness direction are provided at both ends in the width direction of the bottom wall portion 32 having a flat plate shape. As a whole, it has a groove shape. In the present embodiment, the angle between each vertical wall portion 34 and the bottom wall portion 32 is approximately 90 degrees, but the angle between each vertical wall portion 34 and the bottom wall portion 32 is 90 degrees. Need not be set to The second mounting bracket 24 is made of a flat plate made of a highly rigid metal or the like, and is placed on a base plate 36 having a rectangular plane shape that is slightly larger than the mass member 16, and is welded or a bolt or rivet (not shown). Alternatively, it is fixed to the base plate 36 by a known fixing means such as an appropriate fixing bracket.

  The first mounting bracket 22 is arranged so as to face the first mounting bracket 22 so as to be spaced apart upward in the opening direction of the second mounting bracket 24 having such a structure. In particular, in the present embodiment, the first mounting bracket The first mounting bracket 22 and the second mounting bracket 24 are arranged such that the center of the bottom wall portion 32 of the second mounting bracket 24 is positioned on the center axis of the second mounting bracket 24. A main rubber elastic body 26 having a rectangular block shape as a whole is interposed between the first mounting bracket 22 and the second mounting bracket 24 arranged in this manner.

  In the state where the first mounting bracket 22 is inserted from the upper surface of the main rubber elastic body 26, substantially the entire surface except the large-diameter side end surface is vulcanized and bonded to the main rubber elastic body 26, while the second The inner surface of each vertical wall portion 34 is vulcanized and bonded to the side surface in the width direction of the main rubber elastic body 26 in a state where the mounting bracket 24 is put on the main rubber elastic body 26 from below, and the bottom wall The upper surface of the portion 32 is vulcanized and bonded to the lower surface of the main rubber elastic body 26. Thereby, between the opposing surface of the perpendicular direction of the bottom wall part 32 in the 1st mounting bracket 22 and the 2nd mounting bracket 24, and a pair of vertical wall part in the 1st mounting bracket 22 and the 2nd mounting bracket 24 The opposing rubber surfaces 34 and 34 on both sides in the horizontal direction are connected by a main rubber elastic body 26, respectively.

  Further, between the opposing surfaces of the first mounting bracket 22 and the second mounting bracket 24, intermediate restraint plates 38 and 40 are disposed and fixed to the main rubber elastic body 26. In particular, in the present embodiment, two intermediate restraint plates 38 and 40 are disposed between the opposing surfaces of the first mounting bracket 22 and the second mounting bracket 24 and are fixed to the main rubber elastic body 26.

  These two intermediate restraint plates 38, 40 are both vertical plate portions 46, 46, 48 protruding to one side in the plate thickness direction at both ends in the width direction of the horizontal plate portions 42, 44 having a rectangular flat plate shape. , 48 are provided and have a groove shape as a whole.

  Therefore, in the present embodiment, one of the intermediate restraint plates 38 has a cross-sectional shape in a direction orthogonal to the groove direction (the direction in which the one intermediate restraint plate 38 extends) in the groove direction (first in the second mounting bracket 24). The other intermediate restraint plate 40 is perpendicular to the groove direction (the direction in which the other intermediate restraint plate 40 extends). The cross-sectional shape in the direction is made slightly smaller than the cross-sectional shape in the direction orthogonal to the groove direction (the direction in which one intermediate constraining plate 38 extends) in one intermediate constraining plate 38.

  One intermediate restraint plate 38 is in a state where the center of the horizontal plate portion 42 is aligned with the center of the bottom wall portion 32 of the second mounting bracket 24, and the upper end thereof is the second mounting bracket 24. The second mounting bracket 24 is housed and disposed in a state where it is positioned at the same height as the upper end of the second mounting bracket 24. The center of the horizontal plate portion 44 of the other intermediate restraint plate 40 is aligned with the center of the bottom wall portion 32 of the second mounting bracket 24 and the center of the horizontal plate portion 42 of the one intermediate restraint plate 38. In this state, the upper end thereof is accommodated and disposed in one intermediate restraint plate 38 with the upper end thereof being positioned at the same height as the upper ends of the second mounting bracket 24 and one intermediate restraint plate 38. Furthermore, the first mounting bracket 22 is accommodated in the other intermediate restraint plate 40 arranged in this manner. In this state, the two intermediate restraint plates 38 and 40 are fixed to the main rubber elastic body 26, respectively.

  As a result, the horizontal plate portions 42 and 44 of the intermediate restraint plates 38 and 40 spread horizontally between the vertical facing surfaces of the first mounting bracket 22 and the bottom wall portion 32 of the second mounting bracket 24. On the other hand, a pair of vertical plate portions 46, 46, 48, 48 of the intermediate restraint plates 38, 40 extend toward the first mounting bracket 22, and The second mounting bracket 24 extends between opposing surfaces on both sides in the horizontal direction with the pair of vertical wall portions 34, 34.

  As a result, the spring rigidity of the main rubber elastic body 26 is greater than the groove direction of the second mounting bracket 24 in the direction in which the first mounting bracket 22 and the bottom wall portion 32 of the second mounting bracket 24 face each other (mounted state). The vertical direction in FIG. 3 which is the vertical direction) and the opposing direction of the pair of vertical wall portions 34 in the second mounting bracket 24 (the horizontal direction in FIG. 3 which is the horizontal direction in the mounted state) are set larger. It is.

  A plurality of rubber mounts 18 having such a structure cooperate to support one mass member 16 on the base plate 36 in a substantially horizontal and elastic manner. In this case, each of the rubber mounts 18 is aligned in such a manner that the groove direction of the second mounting bracket 24 is aligned with the longitudinal direction of the mass member 16 (the left-right direction in FIGS. 1 and 2). Is elastically supported on the base plate 36. The mass member 16 of the present embodiment is elastically supported on the base plate 36 by four rubber mounts 18 disposed near the four corners.

  In addition, a support wall 50 as a support member that protrudes upward is fixed to the end edge portion (the right end edge portion in FIGS. 1 and 2) of the base plate 36. The support wall 50 is opposed to the outer peripheral surface on one end side in the longitudinal direction (the left-right direction in FIGS. 1 and 2) of the mass member 16 in the horizontal direction. The electromagnetic exciter 14 is mounted at the facing portion between the support wall 50 and the mass member 16.

  As shown in FIG. 5, the electromagnetic exciter 14 includes a large-diameter circular block-shaped base member 52 and a small-diameter circular shape that are disposed on the same central axis so as to face each other in the axial direction. The block-shaped output member 54 is elastically connected by an annular block-shaped connecting rubber 56.

  Here, the base member 52 is formed of a ferromagnetic material such as iron, and a guide hole 58 penetrating the central axis is formed. A guide rod 60 projecting from the output member 54 on the central axis is slidably inserted into the guide hole 58.

  The base member 52 is formed with an annular groove 62 that opens on the end face on the output member 54 side, and a permanent magnet 63 is fixed on the peripheral wall surface of the annular groove 62, whereby the annular groove is formed. A magnetic gap is formed at 62. A coil 66 fixed to the output member 54 by the transmission member 64 is inserted into the annular groove 62 from the opening side and is disposed so as to be displaceable in the axial direction.

  The electromagnetic exciter 14 having such a structure can drive the output member 54 in the axial direction relative to the base member 52 by energizing the coil 66. The magnitude and frequency of the generated driving force can be controlled by adjusting the magnitude and frequency of the pulsating current and the alternating current that are supplied to the motor.

  In the electromagnetic exciter 14, the base member 52 is fixed to the mounting hole 68 penetrating the support wall 50 by press fitting or the like, while the output member 54 is fixed to the mass member 16. Is fixed so that the drive shaft direction (center axis direction) is oriented in the horizontal direction parallel to the longitudinal direction of the mass member 16, and the coil 66 of the electromagnetic exciter 14 is energized in such a mounted state. By doing so, an exciting force for driving and displacing the mass member 16 in the horizontal direction with respect to the support wall 50 is generated.

  Thus, the active vibration damping device 10 having the above-described structure has the base plate 36 fixed to a structural material of a small building structure such as a general house with a bolt or the like (not shown). 36 is in a horizontal state, and the direction of the drive shaft of the electromagnetic exciter 14 (the left-right direction in FIGS. 1 and 2) and the groove direction in which the second mounting bracket 24 in the rubber mount 18 extends are the building structure. Are attached so as to be in the direction of vibration to be controlled. In particular, in a general house or the like, it is desirable to install it in the top floor or attic of the top floor where the vibration in the horizontal direction becomes large, so that the damping effect can be obtained more effectively.

  Therefore, in the active vibration damping device 10 of the present embodiment, the spring rigidity in the groove direction of the second mounting bracket 24 in the main rubber elastic body 26 is the same in the first mounting bracket 22 and the second mounting bracket 24. The direction facing the bottom wall portion 32 (vertical direction in FIG. 3 which is the vertical direction in the mounted state) and the direction facing the pair of vertical wall portions 34 in the second mounting bracket 24 (FIG. 3 which is the horizontal direction in the mounted state). And the groove direction of the second mounting bracket 24 in which the spring rigidity of the main rubber elastic body 26 is sufficiently small coincides with the direction of vibration to be damped. Therefore, it is possible to efficiently exert the exciting force by the electromagnetic vibrator 14 on the mass member 16 and obtain an excellent vibration damping effect.

  In directions other than the direction of vibration to be damped (the groove direction in which the second mounting bracket 24 extends), the spring rigidity of the main rubber elastic body 26 is sufficiently increased, and the vibration displacement of the mass member 16 is suppressed. Therefore, the electromagnetic exciter 14 is damaged due to the vibration displacement of the mass member 16 in a direction other than the direction of the vibration to be damped (the groove direction in which the second mounting bracket 24 extends). (For example, a failure such as damage caused by the guide rod 60 being squeezed against the guide hole 58) can be avoided.

  Furthermore, since the electromagnetic exciter 14 is supported by the building structure via the support wall 50, the arrangement state of the electromagnetic exciter 14 can be stabilized. As a result, it is possible to stably apply the excitation force of the electromagnetic vibrator 14 to the mass member 16.

  Further, as described above, with the active vibration damping device 10 mounted, a control device 72 is provided as a vibration control means of the electromagnetic vibration device 14 as schematically shown in FIG. ing. The control device 72 includes a vibration sensor 74 as vibration detection means. As the vibration sensor 74, for example, an acceleration sensor is employed, and the vibration sensor 74 is attached to a structural frame of the building structure (for example, the base plate 36 of the active vibration damping device 10 or the like), whereby vibration to be damped in the building structure. Is detected as an electrical signal.

  Then, using the electric signal detected by the vibration sensor 74 as a reference signal, an operation control signal for the electromagnetic exciter 14 of the active vibration damping device 10 is generated, and a control signal for controlling the drive power to the coil 66 is generated. A control device 72 is configured including the means 70. The control signal generation means 70 is configured by a control circuit configured to include an arithmetic device such as a CPU, for example.

  The generation of the drive power control signal to the coil 66 based on the reference signal is performed by, for example, adjusting the frequency and phase of the excitation force in real time corresponding to the vibration to be controlled by a known method such as adaptive control. It can be realized by controlling it. This technique is well known as a control device for an active vibration isolator for automobiles, for example. For example, based on the detection signal of the vibration sensor 74 that detects the vibration state of the building structure to be damped, the detection signal is supported so that an effective damping effect can be exerted against the vibration. A drive current is output to the coil 66 of the electromagnetic exciter 14, and for example, a drive current having a magnitude corresponding to the magnitude of the detection signal is obtained from a preset data based on an experiment or the like. The feed current is controlled by supplying power with a predetermined phase difference, or the magnitude of the drive current so as to make the vibration value of the building structure included in the detection signal as zero as possible. It is possible to adopt a device that feedback-controls the above. In other words, in the present embodiment, the control device 72 includes the vibration sensor 74 and the control signal generation means 70, and the vibration to be damped of the building structure detected by the vibration sensor 74. Based on this frequency, the control signal generation means 70 generates an operation control signal for the electromagnetic exciter 14, whereby the frequency of the excitation force exerted on the mass member 16 is controlled.

Here, in the above-described active vibration damping device 10, the horizontal natural frequency (resonance frequency) of the dynamic vibration absorber 12 is adjusted by adjusting the overall mass of the mass member 16 and the spring characteristics of the rubber mount 18. ): F ₀ is set to be lower than the frequency region intended for vibration suppression in the building structure.

Specifically, as the main frequency among the frequencies intended for damping in the building structure, when the natural frequency (resonance frequency) of the vibration direction to be damped in the building structure is f, It is set so as to satisfy the following formula (1).
Formula (1): f ₀ +0.5 (Hz) ≦ f (Hz) ≦ f ₀ × 2 (Hz)

  Thereby, even when the vibration frequency to be damped of the building structure is changed, the vibration to be damped is present in a frequency range higher than the natural frequency in the dynamic vibration absorber 12 of the active vibration damping device 10. Set to As a result, when the electromagnetic exciter 14 is controlled so that the exciting force is exerted on the dynamic vibration absorber 12 at the vibration frequency to be damped in the building structure, the vibration and motion of the building structure to be damped. A significant change (inversion, etc.) in the phase difference from the vibration of the dynamic vibration absorber 12 can be avoided, whereby the vibration control of the electromagnetic vibration device 14 and, hence, the vibration displacement of the dynamic vibration absorber 12 can be avoided. This will improve the stability. Therefore, the active vibration damping effect which acts on the building object by exerting an excitation force on the mass member 16 of the dynamic vibration absorber 12 can be stably exhibited.

  That is, the basic concept of the conventional general active vibration control device is to “tune the resonance frequency of the dynamic vibration absorber so as to match the vibration frequency to be damped in the building structure”. As a result, in the vibration frequency range to be damped, a large excitation force can be built simply by applying a small excitation force to the dynamic absorber using the resonance action of the mass-spring system in the dynamic absorber. It is possible to obtain an excellent vibration control effect on the structure.

  However, in such a conventional active vibration damping device, when the vibration frequency to be damped in the building structure is changed, the vibration damping effect is remarkably lowered or the vibration control becomes unstable. There was a problem. And when this inventor earnestly researched with respect to such a problem, it came to the knowledge that the sudden change of a phase might have influenced.

  Specifically, it is well known that in a vibration system consisting of a mass-spring system such as a dynamic vibration absorber, there is a point of phase reversal with the input vibration in the vicinity of its natural frequency (resonance frequency). ing. The building structure itself has a natural frequency, and it can be easily imagined that the vibration in question in the building structure is in a frequency range corresponding to this natural frequency. However, the frequency of vibration to be damped in a building structure is actually a small region of several Hz or less depending on the difference in the weight, type, speed, etc. of the automobile traveling near the vibration source. The inventor confirmed that it changed. When there is a change in the frequency of the vibration to be damped, the signal obtained by detecting the vibration state in the actual building structure is used as a reference signal, which is applied to the dynamic vibration absorber. In the active vibration damping device that actively controls the excitation force, the excitation force is changed and controlled following the change of the vibration frequency.

  However, as described above, in a dynamic vibration absorber that is originally tuned to the natural frequency range, even if the frequency changes slightly, the phase changes greatly, so that the phase control of the vibrator becomes very difficult. . For this reason, when the frequency of vibration to be damped in the building structure is changed, it is exerted on the building structure based on stable vibration control, and hence vibration of a dynamic vibration absorber. It is presumed that it becomes difficult to sufficiently obtain an offset excitation force, and it is difficult to stably exhibit the target vibration damping effect.

  In addition, active vibration dampers with conventional structures that have been tuned to match the natural frequency of the dynamic vibration absorber to the vibration frequency to be damped in the building structure (the natural frequency of the building structure) By utilizing the resonance action of the dynamic vibration absorber, the small excitation force exerted by the excitation means is amplified to a large excitation force, and the relative excitation force is applied to the building structure. Because the objective is to obtain a vibration effect, when the vibration frequency to be damped in the building structure deviates from the natural frequency of the dynamic vibration absorber, excitation based on the resonance action of the dynamic vibration absorber It is inevitable that the power amplification effect is greatly reduced. For this reason, it is impossible to exert a large relative excitation force to the extent that an effective damping action is exerted on the building structure. This is considered to be one of the causes of inefficiency and instability.

  Here, in the active vibration damping device 10 of the present embodiment, “a configuration in which the natural frequency of the dynamic vibration absorber 12 is set to the low frequency side with respect to the frequency of vibration to be damped in the building structure”. And “exciting the mass member 16 so that an excitation force having a frequency higher than the natural frequency of the dynamic vibration absorber 12 and corresponding to the frequency of vibration to be damped in the building structure is exerted on the mass member 16. By providing the vibration control means (control device 72) for controlling the operation of the means (electromagnetic exciter 14) ", even if the frequency of vibration to be controlled in the building structure changes, the phase is large. Change is avoided. Therefore, following the change of the frequency of vibration to be damped in the building structure, the vibration force exerted on the dynamic vibration absorber 12 from the vibration means (electromagnetic vibration device 14) is stably controlled. I can do it. Moreover, since the dynamic vibration absorber 12 is originally used at a position outside the natural frequency, even if the vibration frequency to be damped in the building structure is changed, there is a problem that a significant drop in the vibration damping effect occurs. There is no such thing as.

  In addition, in the active vibration damping device 10 of the present embodiment, a “support member (support wall 50) for supporting the vibration means (electromagnetic vibrator 14) on the building structure” is provided, and “vibration means ( By adopting the configuration in which the reaction force of the excitation force exerted on the mass member 16 by the electromagnetic vibrator 14) is exerted on the building structure via the support member (support wall 50), the natural frequency as described above is obtained. In spite of the configuration in which it is difficult to obtain the effect of the resonance magnification by using the dynamic vibration absorber 12 at a position outside the position, the vibration force by the vibration means (electromagnetic vibration device 14) is applied to the building structure. On the other hand, it is possible to obtain an excellent vibration control effect by acting efficiently.

  More specifically, in the active vibration damping device 10 of the present embodiment, the mass member 16 is elastically supported by the building structure via the rubber mount 18, so that the building structure is elastically supported by the mass member 16. One vibration system (dynamic vibration absorber 12) that acts as a sub-vibration system is constructed. In addition, an excitation force from the vibration means (electromagnetic vibrator 14) is exerted on this single vibration system. The vibration force from the vibration means (electromagnetic vibrator 14) It is made to act between the support member (support wall 50) fixedly provided with respect to the structure and the mass member 16 elastically supported with respect to the building structure. As a result, the reaction force of the excitation force exerted on the mass member 16 of the dynamic vibration absorber 12 is exerted on the support member (support wall 50). Here, since the mass member 16 is elastically supported by the rubber mount 18 with respect to the building structure, the mass member 16 is caused by the phase difference accompanying the elastic deformation of the rubber mount 18 (main rubber elastic body 26). A phase difference is generated between the excitation force applied to the mass member 16 by the excitation means (electromagnetic vibrator 14) and the reaction force applied to the support member (support wall 50). Moreover, as a characteristic fact, this phase difference is substantially the same in the frequency range exceeding the natural frequency in the dynamic vibration absorber 12 constituted by the mass member 16, and is additively offset against the building structure. In addition, in the frequency range exceeding the resonance frequency of the dynamic vibration absorber 12 (secondary vibration system) constituted by the mass member 16, the vibration means (electromagnetic) On the contrary, the level of the excitation force transmitted from the vibration exciter 14) to the building structure through the dynamic vibration absorber 12 decreases, but on the contrary, from the vibration means (electromagnetic vibration exciter 14) to the support member (support wall 50). ) Increases the level of the excitation force (as the excitation reaction force of the mass member 16) transmitted to the building structure. Therefore, as described above, the support member (support wall 50) is used in combination with the configuration using the dynamic vibration absorber 12 in which the natural frequency is set lower than the vibration frequency to be damped in the building structure. In the active vibration damping device 10 according to the present embodiment, even if it is difficult to use a large vibration force based on the resonance phenomenon of the dynamic vibration absorber 12, the vibration damping means (electromagnetic vibration device 14) is used. It is possible to transmit the applied excitation force to the building structure to be controlled at an efficient and stable level. As a result, the desired active or counterbalance is achieved in the building structure. It is possible to obtain the vibration control effect effectively and stably.

  In short, in the present embodiment, the configuration related to the dynamic vibration absorber 12 "the natural frequency of the dynamic vibration absorber 12 is set to the low frequency side with respect to the vibration frequency to be damped in the building structure", By adopting a configuration related to the support member (support wall 50), which is provided with a support member (support wall 50) for supporting the vibration means (electromagnetic vibrator 14) on the building structure, in combination with each other, It is possible to stably and efficiently exert a counteracting excitation force large enough to exhibit an excellent vibration damping effect on a building structure, and as a result, vibration Thus, the active vibration damping device 10 having a novel structure capable of stably exhibiting an excellent vibration damping effect even when the frequency changes can be realized.

  As mentioned above, although one Embodiment of this invention was described in full detail, this is an illustration to the last, Comprising: This invention is not interpreted limited at all by the specific description in this Embodiment.

  For example, as shown in FIG. 6, the rubber mount may be formed with a straight portion 76 that penetrates in the groove direction of the second mounting bracket 24 in the main rubber elastic body 26. Thereby, while reducing the spring rigidity of the main rubber elastic body 26 in the groove direction in which the second mounting bracket 24 extends, the direction orthogonal to the groove direction in which the second mounting bracket 24 extends, specifically, the first The main body in the facing direction (vertical direction) of the bottom wall portion 32 of the mounting bracket 22 and the second mounting bracket 24 or in the facing direction (horizontal direction) of the pair of vertical wall portions 34, 34 in the second mounting bracket 24. The spring rigidity of the rubber elastic body 26 can be adjusted.

  In this case, the position where the straight portion 76 is formed is, as shown in FIG. 6, the corner between the opposing surfaces of the second mounting bracket 24 and one intermediate restraint plate 38, or one intermediate restraint. A corner portion between the opposing surfaces of the plate 38 and the other intermediate restraint plate 40 is desirable, so that the adjustment of the spring rigidity of the main rubber elastic body 26 as described above can be advantageously realized. In short, the support rigidity of the mass member 16 is exhibited by the main rubber elastic body 26 interposed between the opposing surfaces in the vertical direction between the first and second mounting brackets 22 and 24 and the intermediate restraint plates 38 and 40. Is done. Further, the electromagnetic exciter 14 vibrates by the main rubber elastic body 26 interposed between the horizontal opposing surfaces of the first and second mounting brackets 22 and 24 and the intermediate restraint plates 38 and 40. A large spring rigidity is exhibited in the horizontal direction perpendicular to the direction of force application.

  Then, while ensuring the vertical support rigidity and the horizontal spring rigidity orthogonal to the direction of the excitation force, the spring stiffness in the direction of the excitation force applied by the electromagnetic exciter 14 is increased by forming the straight portion 76. It is possible to reduce the relative frequency, and a large degree of freedom in tuning the spring constant in the vibration direction in which vibration suppression is required and thus the natural frequency of the dynamic vibration absorber 12 can be secured.

  In addition, in order to adjust the spring characteristics in the vertical direction in the rubber mount and in the horizontal direction perpendicular to the direction in which the excitation force acts, the first and second mounting brackets 22 and 24 and the intermediate restraint plates 38 and 40 are mutually connected. In the main rubber elastic body 26 as necessary, between the opposing surfaces in the vertical direction and between the opposing surfaces in the horizontal direction between the first and second mounting brackets 22 and 24 and the intermediate restraint plates 38 and 40 as well. A thinned portion or a straight portion that penetrates in the groove direction in which the second mounting bracket 24 extends or does not penetrate can be formed.

  Further, as shown in FIG. 7, the rubber mount includes a restraint that protrudes into the main rubber elastic body 26 in both the second mounting bracket 24 and the intermediate restraining plate 38, or any one of them. The protrusion 78 can also be formed. Tuning of spring characteristics in the rubber mount is achieved by forming such restraining protrusions 78 in the opposing direction between the first and second mounting brackets 22 and 24 and the intermediate restraining plates 38 and 40. The degree of freedom can be further improved.

  That is, the restraining protrusion 78 has a thin plate shape and extends linearly in parallel with the groove direction (direction perpendicular to the paper surface in FIG. 7) in which the second mounting bracket 24 extends. The mounting bracket 24 and the intermediate restraint plate 38 are fixed. Thereby, in the direction in which the intermediate constraining plate 38 extends (the direction perpendicular to the paper surface in FIG. 7), the elastic deformation caused by the main rubber elastic body 26 becomes the shearing direction with respect to the constraining protrusion 78. The spring rigidity of the elastic body 26 is kept small. On the other hand, in the direction orthogonal to the surface of the intermediate restraint plate 38 (left and right direction and up and down direction in FIG. 7), the elastic deformation caused by the main rubber elastic body 26 causes the restraint projection 78 to act more as compression / tensile force. As a result, even greater spring stiffness is exhibited.

  In particular, the direction perpendicular to the groove direction in which the second mounting bracket 24 extends, specifically, the opposing direction (vertical direction) between the first mounting bracket 22 and the bottom wall portion 32 of the second mounting bracket 24, The spring rigidity of the main rubber elastic body 26 in the opposing direction (horizontal direction) of the pair of vertical wall portions 34, 34 in the second mounting bracket 24 can be set large.

  In particular, in the rubber mount shown in FIG. 7, between the opposing surfaces of the intermediate restraint plate 38 and the second mounting bracket 24, the vertical opposing surfaces protrude alternately in the width direction. In addition, since the constraining protrusions 78 on the intermediate constraining plate 38 and the second mounting bracket 24 are formed so as to protrude alternately in the vertical direction between the opposing surfaces in the horizontal direction, Due to the interaction of the restraining projections 78 and 78 of both the restraining plate 38 and the second mounting bracket 24, the spring stiffness in the vertical direction and the horizontal direction perpendicular to the direction of the applied force is more efficiently increased. It is like that.

  It is also possible to form a constraining protrusion 78 that protrudes from at least one side toward the other only between the opposed surfaces of the bottom wall portion 32 of the second mounting bracket 24 and the lateral plate portion 42 of the intermediate constraining plate 38. Is possible. Alternatively, a constraining protrusion 78 that protrudes from at least one side toward the other is formed only between the opposing surfaces of the vertical wall portion 34 of the second mounting bracket 24 and the vertical plate portion 46 of the intermediate constraining plate 38. Is also possible. Similarly, between the opposed surfaces of the intermediate restraint plate 40 and the intermediate restraint plate 38 and between the opposed surfaces of the intermediate restraint plate 40 and the first mounting bracket 22, similarly, at least at one of those appropriate positions. You may form the restraint protrusion which protrudes toward the other.

  In order to facilitate understanding, in FIGS. 6 and 7, the same reference numerals as those in the above embodiment are given to members and parts having the same structure as in the above embodiment.

  Further, the number of intermediate restraint plates may be one, or three or more. Furthermore, the distance between the facing surfaces of the first mounting bracket 22 and the intermediate restraining plate 40, the distance between the facing surfaces of the second mounting bracket 24 and the intermediate restraining plate 38, and the distance between the facing surfaces of the intermediate restraining plates 38 and 40 are: They can be adjusted as appropriate, and they need not be set identically. It is also possible to set the distance between the opposing surfaces between these members by making the distance between the opposing surfaces in the vertical direction different from the distance between the opposing surfaces in the horizontal direction.

  The first mounting bracket 22 also has a horizontal surface and vertical surfaces on both sides thereof in the same manner as the intermediate restraint plates 38 and 40 and the second mounting bracket 24, and the direction in which the excitation force acts (the vertical direction in FIG. 4). May be formed with a shape extending in a straight line, thereby further advantageously ensuring the opposing area of the first mounting bracket 22 and the intermediate restraining plate 40 in the vertical direction and in the horizontal direction orthogonal to the direction of action of the excitation force. Is possible.

  Furthermore, in the above embodiment, the vertical plate portions 46 and 48 of the intermediate restraint plates 38 and 40 reach the upper end surface of the main rubber elastic body 26, but the upper end surfaces of these vertical plate portions 46 and 48 are the main rubber. The elastic body 26 may be embedded without reaching the upper end surface.

  Furthermore, the fixed portions to the vertical plate portions 46 and 48 of the intermediate restraint plates 38 and 40, which are both side portions of the main rubber elastic body 26 in the direction of the excitation force, are inclined, or the intermediate restraint plates 38 and 40 are vertically It is also possible to make the plate portions 46, 48 themselves have an inclined shape that expands upward, whereby the stiffness of the support spring for the mass member 16 can be set large, and the mass action of the mass member 16 can be increased. It is also possible to improve the durability by reducing the tensile stress of the main rubber elastic body 26 at the time.

  Moreover, in the drawings of the above-described embodiment, the shape of each member is simply displayed. However, for example, each corner portion of the intermediate restraint plates 38 and 40 and the first and second mounting brackets 22 and 24 is appropriately displayed. Therefore, the processability can be improved and the stress concentration in the main rubber elastic body 26 can be reduced. Further, the surface of the main rubber elastic body 26 bonded to each metal fitting can be provided with an appropriate round (fillet round) to improve adhesion durability and prevent cracking.

  Furthermore, in the above-described embodiment, the portion of the main rubber elastic body 26 that is positioned between the opposing surfaces of the second mounting bracket 24 and the one intermediate restraint plate 38, and the intermediate restraint plate 38 and the other intermediate portion. The portion positioned between the opposing surfaces of the restraining plate 40 and the portion positioned between the opposing surfaces of the other intermediate restraining plate 40 and the first mounting bracket 22 are formed of rubber materials having different compositions. Anyway. As a result, for example, the vertical spring characteristic and the horizontal spring characteristic can be made different with a greater degree of freedom.

  In addition, the present invention is an active vibration control device for various small to large building structures such as one-story and two-story general houses as well as apartment houses, offices, warehouses, buildings and towers. Needless to say, both are applicable.

  In addition, although not enumerated one by one, the present invention can be carried out in a mode to which various changes, modifications, improvements and the like are added based on the knowledge of those skilled in the art. It goes without saying that all are included in the scope of the present invention without departing from the spirit of the present invention.

1 is a front view showing an active vibration damping device as one embodiment of the present invention. The top view of the active vibration damping device. It is a longitudinal cross-sectional view of the rubber mount which comprises the active vibration damping device shown by FIG. 1, Comprising: Sectional drawing of the III-III direction of FIG. The top view of the rubber mount. It is a longitudinal cross-sectional view which expands and shows the mounting state of the electromagnetic vibrator which comprises the active vibration damping device shown by FIG. The longitudinal cross-sectional view which shows another aspect of the rubber mount employable in this invention. The longitudinal cross-sectional view which shows another aspect of the rubber mount employable in this invention.

Explanation of symbols

10: Active vibration damping device, 12: Dynamic vibration absorber, 14: Electromagnetic vibration exciter, 16: Mass member, 18: Rubber mount, 22: First mounting bracket, 24: Second mounting bracket, 26: Rubber elastic body, 32: bottom wall, 34: vertical wall, 38: intermediate restraint plate, 40: intermediate restraint plate, 42: horizontal plate, 44: horizontal plate, 46: vertical plate, 48: vertical Plate part, 50: Support wall

Claims (6)

A dynamic vibration absorber is configured by elastically supporting mass members with a plurality of rubber mounts on a building structure, and a horizontal direction that is a vibration direction to be damped in the building structure In an active vibration damping device for a building structure provided with a vibration means for applying the vibration force of the mass member to the mass member,
A first mounting member attached to one of the mass member and the building structure, and a second mounting member attached to the other of the mass member and the building structure are arranged opposite to each other in the vertical direction. While the main rubber elastic body is disposed between the opposing surfaces of the first mounting member and the second mounting member, the first mounting member and the second mounting member are elastically connected, while the second mounting member A bottom wall portion extending in a horizontal direction perpendicular to the direction facing the first mounting member in the mounting member, and a pair of vertical wall portions extending from both ends in the width direction of the bottom wall portion toward the first mounting member side And the second mounting member is formed into a groove shape as a whole, and between the vertical facing surfaces of the first mounting member and the bottom wall portion of the second mounting member, The pair of longitudinal portions of the first mounting member and the second mounting member. Between the opposing surfaces on the both sides in the horizontal direction with the main body are respectively connected by the main rubber elastic body, and further, between the first mounting member and the bottom wall portion of the second mounting member A horizontal plate portion that spreads horizontally between opposing surfaces in the vertical direction, and extends from both ends in the width direction of the horizontal plate portion toward the first attachment member side, and the first attachment member and the second attachment member An intermediate constraining plate having a groove shape as a whole, comprising a pair of vertical plate portions extending between opposing surfaces on both sides in the horizontal direction of the pair of vertical wall portions in the mounting member, is provided, and the first mounting member The rubber mount has a structure in which the intermediate restraint plate is fixed to the main rubber elastic body between the opposing surfaces of the second mounting member,
While the plurality of rubber mounts are attached to the mass member with the second mounting members each having a groove shape aligned in the same direction,
Adopting an electromagnetic excitation means as the excitation means, providing a support member for supporting the electromagnetic excitation means on the building structure,
A building structure characterized in that an excitation force by the electromagnetic excitation means is exerted on the mass member in a groove direction in which the second mounting member having a groove shape in the rubber mount extends. Active vibration control device for objects.   The active vibration damping device for a building structure according to claim 1, wherein the main rubber elastic body is formed with a straight portion penetrating in a groove direction in which the second mounting member extends.   The active vibration damping device for a building structure according to claim 1 or 2, wherein at least one of the second mounting member and the intermediate restraining plate is formed with a restraining protrusion protruding into the main rubber elastic body. . The reaction force of the excitation force exerted on the mass member by the electromagnetic excitation means is applied to the building structure via the support member, and vibration to be damped in the building structure The natural frequency of the dynamic vibration absorber is set to the low frequency side with respect to the frequency,
By controlling the frequency of the excitation force exerted on the mass member by the electromagnetic excitation means, the vibration to be damped in the building structure in a higher frequency range than the natural frequency of the dynamic vibration absorber The building according to any one of claims 1 to 3, further comprising an excitation control means for controlling the operation of the electromagnetic excitation means so that an excitation force having a frequency corresponding to a frequency is exerted on the mass member. Active vibration control device for structures. In the excitation control means, the frequency f of the excitation force exerted on the mass member by the electromagnetic excitation means is at least f ₀ +0.5 Hz with respect to the natural frequency f ₀ of the dynamic vibration absorber. The active vibration damping device for a building structure according to claim 4, wherein the active vibration damping device is set to f ₀ × 2 Hz or less. Vibration detection means for detecting vibration of the building structure, and control for generating an operation control signal for the electromagnetic excitation means based on a reference signal corresponding to the vibration of the building structure detected by the vibration detection means Signal generating means,
The active vibration damping device for a building structure according to claim 4 or 5, wherein the vibration control means is included.

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