JP2008095905A - Active vibration control device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an active vibration control device capable of efficiently reducing vibration transmitted from a bogie or an under floor apparatus to an interior floor plate. <P>SOLUTION: Since an actuator device 65 is provided between the interior floor plate 7 and a floor support member 5, vibration transmitted from the bogie or the under floor apparatus to the interior floor plate 7 can be efficiently reduced by canceling vibration by generating exciting force of the actuator device 65 in reverse phase of the vibration when the vibration generated from the bogie or the under floor apparatus is transmitted to the interior floor panel 7 via a structure floor 4 and the floor support member 5. As a result, comfort in a cabin can be improved. Moreover, since a vibration isolation rubber member 61 is arranged so as to overlap with the actuator device 65, not only effect by the actuator device 65 but also vibration control effect by the vibration isolation rubber member 61 can be simultaneously provided, and vibration attenuation function and vibration isolation function are efficiently displayed. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an active vibration damping device, and more particularly to an active vibration damping device that can more efficiently reduce vibration transmitted from a carriage or an underfloor device to an interior floor board.

  In recent railway vehicles, as a part of service to passengers, a comfortable cabin space can be provided. In the realization of a comfortable cabin space, reducing the vibration of the cabin space is one of the main issues. In particular, it is important to deal with the vibration transmitted from the bogie and underfloor equipment in the floor structure of the vehicle structure. ing.

For example, in Japanese Patent Laid-Open No. 2000-247228, a vibration isolating member 16 is attached to a floor receiving member 11 erected on a structural floor plate 2 of a vehicle structural body 1, and an interior floor plate 4 is placed on the vibration isolating member 16. And the double floor structure which attenuate | damps the vibration transmitted from the structure floor board 2 to the interior floor board 4 with the vibration proof member 16, so-called floating floor structure is disclosed (patent document 1).
JP 2000-264033 A

  By the way, in the conventional floating floor structure described above, generally, an anti-vibration member made of a rubber-like elastic material is extended in the longitudinal direction of the vehicle structure and arranged in the width direction of the vehicle structure, It was the structure which supports a floor board. However, in the floating floor structure in such a configuration, there is a problem that vibration transmitted from the bogie or the underfloor device to the inside of the vehicle cannot be sufficiently reduced.

  The present invention has been made to solve the above-described problems, and an object thereof is to provide an active vibration damping device that can more efficiently reduce vibration transmitted from a cart or an underfloor device to an interior floor board. Yes.

  In order to achieve this object, an active vibration damping device according to claim 1 includes a frame having a pair of side beams and a plurality of horizontal beams connecting the side beams, and a structure attached to the frame. Anti-vibration between the interior floor plate and the floor support member of a railway vehicle, comprising a floor, a floor receiving member standing on the structural floor, and an interior floor plate supported by the structural floor by the floor receiving member An anti-vibration device includes an anti-vibration rubber member made of a rubber-like elastic material and an actuator device that generates an excitation force, and the anti-vibration rubber member And the actuator device are arranged in an overlapping manner between the interior floor board and the floor receiving member.

  The active vibration damping device according to claim 2 is the active vibration damping device according to claim 1, wherein the actuator device is a piezoelectric actuator configured by stacking a plurality of piezoelectric elements.

  The active vibration damping device according to claim 3 is the active vibration damping device according to claim 2, wherein the vibration-proof rubber member is a vibration-proof base made of a rubber-like elastic material, and vulcanized and bonded to the vibration-proof base. The actuator device includes a fixing member that is bonded and fixed to the piezo actuator, and one of the pair of mounting members is fastened and fixed to the interior floor board or the floor receiving member. The fixing member is fastened and fixed to the floor receiving member or the interior floor plate, and the other of the pair of mounting members is directly or indirectly bonded and fixed to the piezo actuator.

  According to the active vibration damping device of claim 1, the interior floor board is supported on the structural floor by the floor receiving member, and the actuator device is interposed between the interior floor board and the floor receiving member. When vibration generated from a bogie or underfloor equipment is transmitted to the interior floor through the structural floor and floor receiving member, an excitation force of the actuator device is generated to cancel the vibration so that the vibration is in the opposite phase. Thus, there is an effect that the vibration transmitted from the cart or the underfloor equipment to the interior floor board can be efficiently reduced. As a result, the comfort in the passenger compartment can be improved.

  Furthermore, according to the present invention, the vibration-proof rubber member made of a rubber-like elastic material is disposed between the interior floor board and the floor receiving member so as to overlap the actuator device. In addition, the vibration damping effect by the vibration isolating rubber member can be obtained at the same time, and the vibration damping function and the vibration insulating function can be more efficiently exhibited. As a result, it is possible to efficiently reduce the vibration transmitted from the bogie or the underfloor device to the interior floor board and further improve the comfort in the vehicle interior.

  In addition, according to the present invention, since the vibration isolator (actuator device and vibration isolating rubber member) is interposed between the floor receiving member and the interior floor board, the vibration isolating device is structured separately from the floor receiving member. Compared with the case where it interposes between a floor and an interior floor board, there exists an effect that the space for installing an air conditioning duct etc. can fully be ensured.

  Furthermore, when a vibration isolator is interposed between the structural floor and the interior floor board separately from the floor receiving member, the vibration isolation apparatus itself transmits the vibration transmitted from the structural floor to the interior floor board. In addition to the path, a transmission path by the floor receiving member is also formed, so that the interior floor board cannot be sufficiently damped. On the other hand, according to the present invention, the vibration transmission path of the vibration transmitted from the structural floor to the interior floor board is only the floor receiving member, and the vibration isolator (actuator apparatus and vibration isolating rubber member) is included in the vibration transmission path. Therefore, there is an effect that the vibration transmitted from the carriage or the underfloor device to the interior floor board can be efficiently reduced. As a result, the comfort in the passenger compartment can be improved.

  According to the active vibration damping device of the second aspect, in addition to the effect achieved by the active vibration damping device of the first aspect, the actuator device is constituted by a piezoelectric actuator having a laminated structure of piezoelectric elements. There is an effect that it is possible to reduce the size of the vibration isolator while sufficiently securing the necessary excitation force. As a result, the vibration isolator can be interposed between the floor receiving member and the interior floor board without unnecessarily expanding the space between the structural floor and the interior floor board, so that the vehicle compartment space is sufficiently large. Can be secured.

  According to the active vibration damping device according to claim 3, in addition to the effect of the active vibration damping device according to claim 2, one of the pair of mounting members is fastened and fixed to the interior floor board or the floor receiving member and the fixing member. Is fixed to the floor receiving member or the interior floor plate, and the other of the pair of mounting members is directly or indirectly bonded and fixed to the piezo actuator, so that vibration is transmitted from the structural floor to the interior floor plate. At least a part of the vibration transmission path at that time can be constituted only by the vibration isolating substrate or the actuator device.

  That is, with this configuration, the vibration transmitted from the carriage or the underfloor equipment to the structural floor passes through the floor receiving member, and then passes through the vibration isolation base and the actuator device and is transmitted to the interior floor board. By virtue of the vibration damping function and vibration isolation function of the vibration isolation base and the actuator device, it is possible to efficiently reduce the vibration transmitted to the interior floor board and to more reliably improve the comfort in the passenger compartment. There is.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a partial enlarged cross-sectional view partially showing the floor structure of the railway vehicle 1 in the first embodiment, and FIG. 2 is a cross-sectional view of the floor structure taken along the line II-II in FIG. 3 is a cross-sectional view of the floor structure taken along line III-III in FIG. In the present embodiment, a description will be given by using a Shinkansen vehicle as an example of a railway vehicle. However, as a matter of course, the present invention can be applied to other railway vehicles other than the Shinkansen vehicle.

  As shown in FIG. 1, the floor structure of the vehicle structure 2 of the railway vehicle 1 is configured as follows. A frame 3 is provided at the bottom of the vehicle structure 2. The underframe 3 has a pair of side beams 3a and 3a arranged in the rail direction, that is, the vehicle body length direction (the vertical direction in FIG. 1) of the railway vehicle 1, and the side beams 3a and 3a. A plurality of transverse beams 3b coupled in the vehicle body width direction (left and right direction in FIG. 1) of the vehicle 1 and pillow beams (not shown) disposed on the carriage unit are configured in a ladder shape. Further, between the pair of side beams 3a, 3a, two middle beams 3d, 3d are arranged in the longitudinal direction of the railcar 1 in the pillow beam portion (the cart portion (not shown)). 3 is configured.

  As shown in FIGS. 1 to 3, a structural floor 4 as an airtight floor is attached on the underframe 3, and a plurality of floor receiving members 5 are erected on the structural floor 4 or under the frame 3. Has been. The floor receiving member 5 is a member having an inverted U-shaped cross section formed continuously (or intermittently) in the vehicle body length direction (the left-right direction in FIG. 2, the vertical direction in FIG. 3) of the railway vehicle 1.

  As shown in FIGS. 1 to 3, a vibration isolator 6 is disposed on the upper surface portion of the floor support member 5, and an interior floor board 7 is disposed above the vibration isolator 6. That is, as shown in FIG. 3, the vibration isolator 6 is interposed between the upper surface of the floor support member 5 and the lower surface of the interior floor plate 7, and the bolt member is interposed between the floor support member 5 and the interior floor plate 7. Fastened and fixed by 8a and 8b. As shown in FIG. 1, a stool 9 is installed on the interior floor board 7, and an air conditioning duct (not shown) is disposed between the interior floor board 7 and the structural floor 4.

  As shown in FIG. 2 or 3, the vibration isolator 6 includes a vibration isolating rubber member 61 and an actuator device 65. The anti-vibration rubber member 61 and the actuator device 65 perform a vibration damping function and a vibration insulation function, thereby allowing vibration transmitted from the carriage and the underfloor equipment 12 to the interior floor board 7 via the structural floor 4 and the floor support member 5. The anti-vibration rubber member 61 is superimposed on the upper side of the actuator device 65 (the upper side in FIG. 2 or 3) to reduce noise and improve the comfort in the passenger compartment 10.

  As shown in FIG. 2 or FIG. 3, the vibration isolating rubber member 61 is vulcanized and bonded to an anti-vibration base 62 made of a rubber-like elastic material in a cylindrical shape, and to the upper surface side and the lower surface side of the vibration isolating base 62. And an upper metal fitting 63 and a lower metal fitting 64 that are formed in a disk shape from a steel material. The upper metal fitting 63 is thicker than the lower metal fitting 64, and a fastening hole with a female screw engraved on the inner periphery is provided in the center on the upper surface side of the upper metal fitting 63. The vibration isolation member 61 is fastened and fixed to the interior floor plate 7 by screwing the bolt member 8 a into the fastening hole of the upper metal fitting 63.

  As shown in FIG. 2 or FIG. 3, the actuator device 65 includes an actuator unit 66, an upper insulating plate 67 that is attached to the upper surface side and the lower surface side of the actuator unit 66, and is formed in a disk shape from an insulating material. And a lower insulating substrate 68. The lower insulating plate 68 is thicker than the upper insulating plate 67, and a fastening hole with a female screw engraved on the inner periphery is recessed in the lower surface side central portion of the lower insulating plate 68. Yes. The actuator device 65 is fastened and fixed to the floor receiving member 5 by screwing the bolt member 8 b into the fastening hole of the lower insulating plate 68.

  The actuator unit 66 is a device for generating an excitation force that cancels the vibration generated when the vibration generated from the cart or the underfloor device 12 is transmitted to the interior floor board 7 via the structural floor 4 and the floor receiving member 5. Yes, it is configured as a laminated piezo actuator. Here, a detailed configuration of the actuator section 66 will be described with reference to FIG.

  FIG. 4 is a perspective view of the actuator portion 66. As shown in FIG. 4, the actuator unit 66 is configured by alternately laminating disk-shaped piezoelectric elements and electrode plates, and by controlling energization via terminals extending from the electrode plates, It expands and contracts in the vertical direction in FIG.

  Specifically, in the present embodiment, the piezoelectric element is composed of a lead zirconate titanate-based ceramic piece, and the piezoelectric elements and electrode plates are alternately stacked to form an electrically parallel / mechanical series structure. The large displacement and high output excitation force can be generated while ensuring the responsiveness.

  Returning to FIG. 2 and FIG. As shown in FIG. 2 or FIG. 3, the vibration isolator 6 is configured by superimposing a vibration isolating rubber member 61 on the upper side of the actuator device 65. The upper insulating plate 67 is bonded and fixed using bonding means. Thus, the vibration isolator 6 is interposed between the upper surface of the floor receiving member 5 and the lower surface of the interior floor board 7 in a state where the vibration isolating rubber member 61 and the actuator device 65 are integrally formed. .

  According to the vibration isolator 6 configured in this manner, at least a part of the vibration transmission path (the floor receiving member 5 and the vibration isolator 6) when vibration is transmitted from the structural floor 4 to the interior floor board 7 is illustrated. As shown in FIG. 3, it can be configured only from the vibration-proof base 62 or the actuator portion 66.

  That is, as shown in FIG. 3, the vibration transmitted from the carriage or the underfloor device 12 to the structural floor 4 passes through the floor receiving member 5 and then passes through the actuator portion 66 and the vibration isolation base 62, and the interior floor board. 7, the vibration transmitted to the interior floor board 7 can be effectively reduced by the vibration damping function and the vibration insulation function of the vibration isolation base 62 and the actuator portion 66, so that the interior of the vehicle interior 10 can be reduced. The comfort can be improved more reliably.

  Next, the arrangement of the vibration isolator 6 will be described with reference to FIG. FIG. 5 is a top view of the interior floor board 7 and shows a state in which the interior floor board 7 is supported on the structural floor 4 via the floor receiving member 5. As shown in FIG. 5, the interior floor board 7 is composed of a plurality of pieces (interior floor boards 7a, 7b, 7c,...) Divided in the vehicle body length direction (up and down direction in FIG. 5). 7a, 7b, 7c,... Are mechanically fastened and fixed to each other by bolts (not shown).

  As shown in FIG. 5, in this embodiment, six floor support members 5 are formed continuously in the vehicle body length direction, and the vibration isolator 6 is arranged in the vehicle body width direction (left and right direction in FIG. 5). A plurality of rows are arranged in the vehicle body length direction (vertical direction in FIG. 5), with six as one row. Each of the interior floor boards 7a, 7b, 7c,... Is supported by the floor receiving member 5 via two rows (12 in total) of vibration isolators 6.

  Next, a support structure for the underfloor equipment 12 will be described with reference to FIGS. 6 and 7. 6 is a partially enlarged cross-sectional view of the support structure of the underfloor equipment 12 shown in an enlarged view of the VI part of FIG. 1, and FIG. 7 is a cross-sectional view of the support structure of the underfloor equipment 12 along the line VII-VII in FIG. It is.

  As described above, the cross beam 3b is a member that couples the pair of side beams 3a and 3a in the vehicle body width direction (the left-right direction in FIG. 6 and the vertical direction in FIG. 7), and as shown in FIG. Made of steel material. A hanging groove 3b1 is formed in the lower portion of the horizontal beam 3b, and the head of the bolt member 18a is inserted into the hanging groove 3b1.

  The suspension groove 3b1 of the horizontal beam 3b is formed so that the bolt member 18a can move along the extending direction (the horizontal direction in FIG. 6 and the vertical direction in FIG. 7). As shown in FIG. From the opening formed below the lower groove 3b1, the shaft portion of the bolt member 18a is suspended. A bracket member 11 is disposed below the suspension groove 3b1, and is fastened and fixed to the cross beam 3b by a bolt member 18a and a nut member 18b.

  As shown in FIG. 6 or 7, the bracket member 11 is made of a steel material and has an L-shaped cross section, and both ends (the left and right ends in FIG. 6 and the end in the vertical direction of FIG. 7) have reinforcing side walls. Part 11a is formed. The bracket member 11 has a through hole having a circular cross section, and a bolt member 18a is inserted through the through hole. Further, an underfloor device 12 serving as a vibration source is attached to the back surface of the bracket member 11, and the underfloor device 12 is supported by being suspended through the bracket member 11.

  An actuator device 165 is disposed on the side of the fastening portion of the bracket member 11 (the left side in FIG. 6 and the back side in FIG. 7). This actuator device 165 is an electromagnetic actuator that is composed of a combination of a permanent magnet and an electromagnet and generates an excitation force using Lorentz force, and is fastened and fixed to the lower surface side (lower side of FIGS. 6 and 7) of the horizontal beam 3b. Has been.

  Next, a method for controlling the actuator device 65 will be described. FIG. 8 is a block diagram of the active vibration damping device 30. The active control device 30 is controlled according to a change in characteristics of a vibration waveform to be controlled according to an algorithm, a drive unit (actuator device 65) that outputs control vibration, a detection unit (vibration sensor 69) that detects the control vibration. And adaptive control means for adjusting the characteristics of the system and generating a control signal for generating a control vibration that interferes with the vibration, and oscillating the control vibration output from the drive means by the control signal from the adaptive control means This is an active control device that reduces vibrations by interfering with the motor.

  As shown in FIG. 8, in the active control device 30, in addition to the control vibration from the actuator device 65, the vibration of the interior floor board 7 is collected by the vibration sensor 69. The vibration sensor 69 is configured by a piezoelectric acceleration sensor, and in this embodiment, one vibration sensor 69 is provided for one actuator device 65.

  The vibration sensor 69 corresponding to the actuator device 65 interposed between the interior floor plate 7 and the floor receiving member 5 is located near the actuator device 65 on the lower surface side (lower side in FIG. 1) of the interior floor plate 7 In the embodiment, it is disposed in a region having a radius of 10 cm centered on the bolt member 8a. Similarly, the vibration sensor 69 corresponding to the actuator device 165 attached to the cross beam 3b is arranged near the actuator device 165 (in the present embodiment, the bolt member 18a on the lower surface side (lower side in FIG. 1) of the cross beam 3b. It is disposed in a central region having a radius of 10 cm).

  As shown in FIG. 8, the vibration sensor 69 is connected with a calculator 33 that subtracts the control vibration output from the actuator device 65 from the vibration collected by the vibration sensor 69. The vibration sensor 69 is connected to an adaptive filter coefficient calculator 34 that adjusts the calculation coefficient based on an algorithm so that the detection signal from the vibration sensor 69 becomes zero. On the other hand, a transfer characteristic identification filter 37 that has identified the transfer characteristic S (n) and an adaptive filter 36 that is a control means of the actuator device 65 are connected to the calculator 33. The adaptive filter 36 is connected to an actuator device 65 to be controlled, and is connected to a transfer characteristic identification filter 37 that sends the control vibration output from the actuator device 65 to the calculator 33.

  According to the active control device 30 configured as described above, the phase inversion operation is performed on the detected vibration collected by the vibration sensor 69, and the control vibration is output from the actuator device 65. At that time, the vibration sensor 69 collects vibrations obtained by adding the vibration generated in the interior floor board 7 and the control vibration output from the actuator device 65 by the phase inversion calculation.

  In the vibration sensor 69, the original vibration (the vibration of the interior floor board 7 obtained by subtracting the control vibration output from the actuator device 65 among the vibrations detected by the vibration sensor 69) and the control vibration output from the actuator device 65. Collected and a detection signal based on the collected vibration is sent to the calculator 33. On the other hand, the control signal generated there from the adaptive filter 36 is given to the actuator device 65 and also to the calculation input terminal of the calculator 33 via the transfer characteristic identification filter 37 in which the transfer characteristic is set.

  The transfer characteristic of the transfer characteristic identification filter 37 is the same as the vibration transfer characteristic of the transfer path from the actuator device 65 to the vibration sensor 69. Accordingly, the computing unit 33 subtracts the control vibration output by the actuator device 65 from the detected vibration collected by the vibration sensor 69 based on the detection signal from the vibration sensor 69 and the control signal from the adaptive filter 36. Getting vibration is done. Thereby, the control calculation (phase inversion calculation) can be executed only for the original vibration, and the stability of the system can be improved.

  The original vibration signal obtained by the calculation of the calculator 33 is input to the adaptive filter coefficient calculator 34 via the transfer characteristic identification filter 35. The transfer characteristic of the transfer characteristic identification filter 35 is the same as the vibration transfer characteristic of the transfer path from the actuator device 65 to the vibration sensor 69. In this case, the transfer characteristic identification filter 35 is interposed because the vibration detection path of the path from which the signal detected by the vibration sensor 69 is transmitted from the actuator device 65 to the evaluation point is taken into consideration. is there.

  The adaptive filter coefficient calculator 34 is given a signal from the transfer characteristic identification filter 35 and a detection signal from the vibration sensor 69 so that the detection signal given from the vibration sensor 69 based on the algorithm becomes zero. In addition, the calculation coefficient of the adaptive filter 36 is adjusted. Based on the calculation coefficient, the adaptive filter 36 calculates a control signal for canceling out the vibration and interference.

  The control signal is sent from the adaptive filter 36 to the actuator device 65. Then, the control vibration output from the actuator device 65 has the same amplitude and opposite phase as the vibration transmitted through the interior floor board 7 at the evaluation point, causing mutual interference and canceling each other.

  Next, with reference to FIG. 9 and FIG. 10, test results on the vibration reduction effect of the interior floor board 7 will be described. In the test shown in FIG. 9, in the vibration-proof support environment of the floorboard, the pseudo-vibration of the under-floor device 12 of the railway vehicle 1 was given to the simulated environment, and the vibration acceleration level of the interior floorboard 7 equivalent plate was measured. In the test shown in FIG. 10, the effect is verified by attaching the actuator device 165 (active vibration damping device) shown in FIGS. 6 and 7 to the actual vehicle of the Shinkansen and comparing the state where the active vibration damping control is turned on / off. did.

  9 and 10 show the test results. In FIG. 9, “condition 1” indicated by a one-dot chain line is obtained by mechanically connecting the floor receiving member 5 and the interior floor board 7 directly (without the vibration isolator 6 interposed). "Is an actuator device 65 interposed between the floor receiving member 5 and the interior floor board 7 (no vibration isolating rubber member 61 is interposed)." Condition 3 "indicated by a solid line is the same as that of the floor receiving member 5 and An anti-vibration rubber member 61 is interposed between the interior floor board 7 (the actuator device 65 is not interposed), and “this application” indicated by a two-dot chain line is between the floor receiving member 5 and the interior floor board 7. Further, an anti-vibration device 6 (anti-vibration rubber member 61 and actuator device 65) is interposed.

  In FIG. 10, “condition 4” indicated by a solid line is when the active vibration suppression control is turned off, and “this application” indicated by a two-dot chain line is when the active vibration suppression control is turned on.

  In the test shown in FIG. 9, the vibration acceleration level of “this application” is compared with the conditions 1 to 3 by using the vibration isolation device 6 in which the vibration isolation rubber member 61 is superimposed on the actuator device 65. Was significantly reduced. In particular, in “Condition 3” using only the anti-vibration rubber member 61, peaks were formed in the vicinity of 70 Hz, 120 Hz, 240 Hz, and 300 Hz, and the peak value reached about 80 dB to 90 dB. In the “present application”, the appearance of the peak is eliminated, and the vibration acceleration level is reduced to about 60 dB, and it can be understood that the comfort in the passenger compartment 10 can be improved.

  Further, in the test shown in FIG. 10, under “Condition 4”, the vibration of the underfloor equipment 12 is seen around 120 Hz, and the vibration of the harmonic component is seen around 240 Hz and 360 Hz. In contrast to the fact that it reaches about 95 dB to 100 dB, in the “present application”, by using the actuator device 65, all of these vibrations are reduced to a vibration acceleration level of about 80 dB or less. Can understand that the comfort has been improved.

  Next, the rail vehicle 100 according to the second embodiment will be described with reference to FIGS. 11 and 12. FIG. 11 is a partially enlarged cross-sectional view of the support structure of the underfloor device 12 and corresponds to the VI portion of FIG. FIG. 12 is a cross-sectional view of the support structure for the underfloor equipment 12 taken along line XII-XII in FIG.

  In the railway vehicle 1 according to the first embodiment, the case where the bracket member 11 is directly connected to the horizontal beam 3b has been described. However, in the railway vehicle according to the second embodiment, an actuator device is provided between the horizontal beam 3b and the bracket member 11. 65 is interposed. In addition, the same code | symbol is attached | subjected to the part same as 1st Embodiment mentioned above, and the description is abbreviate | omitted.

  As shown in FIGS. 11 and 12, in the railcar 100 according to the second embodiment, the head of the bolt member 18a is inserted into the suspension groove 3b1 as in the case of the first embodiment. The shaft portion of the member 18a is suspended from an opening formed below the hanging groove 3b1. An actuator device 65 is disposed below the suspension groove 3 b 1, and a bracket member 11 is disposed below the actuator device 65.

  That is, as shown in FIGS. 11 and 12, the actuator device 65 is interposed between the lower surface of the horizontal beam 3 b (suspending groove 3 b 1) and the upper surface of the bracket member 11, and between the horizontal beam 3 b and the bracket member 11. Are fastened and fixed by bolt members 18a and nut members 18b. In addition, since the actuator device 65 has the same configuration as the actuator device 65 of the vibration isolator 6 in the first embodiment described above, the same reference numerals are given and description thereof is omitted.

  The vibration sensor 69 (see FIG. 8) is located near the fastening portion between the bracket member 11 and the horizontal beam 3b (in this embodiment, the bolt member on the lower surface side of the horizontal beam 3b (the lower side in FIGS. 11 and 12). In a region having a radius of 10 cm centered on 18a). Further, the control method of the actuator device 65 is the same as that in the first embodiment, and the description thereof is omitted.

  According to the railway vehicle 100 in the second embodiment configured as described above, the excitation force of the actuator device 65 is generated so that the vibration generated from the carriage or the underfloor equipment 12 is in a phase opposite to the vibration. By canceling the vibration, the vibration transmitted from the cart or the underfloor device 12 to the interior floor board 7 through the cross beam 3b can be reduced, and the comfort in the passenger compartment 10 can be improved.

  Next, with reference to FIG. 13, a railway vehicle according to the third embodiment will be described. FIG. 13 is a block diagram of the active vibration damping device 230.

  In the first embodiment, the case where the active control device 30 is configured by a feedback method has been described. However, the active control device 230 in the third embodiment is configured by a feedforward method (prediction calculation method). In addition, the same code | symbol is attached | subjected to the part same as 1st Embodiment mentioned above, and the description is abbreviate | omitted.

  As shown in FIG. 13, the feedforward active control device 230 includes a vibration sensor 269 installed in a vibration source (for example, the underfloor device 12) that is not included in the feedback active control device 30. The vibration sensor 269 is connected to the transfer characteristic identification filter 35 and the adaptive filter 36.

  On the other hand, an adaptive filter coefficient calculator 34 is connected to the vibration sensor 69 installed in the evaluation position (in the present embodiment, in the vicinity of the actuator device 65 and on the lower surface of the interior floor board 7). A transfer characteristic identification filter 35 is connected to the calculator 34. The adaptive filter coefficient calculator 34 calculates a calculation coefficient so that the detection signal from the vibration sensor 69 becomes zero based on the algorithm, and the calculation result is reflected in the adaptive filter 36 that drives the actuator device 65. Let The adaptive filter 36 is connected to the actuator device 65 and configured to send a control signal.

  According to the active control device 230 configured as described above, the actuator device predicts the vibration at the position where the vibration detected by the vibration sensor 269 is canceled and calculates the vibration having the same amplitude and opposite phase as the vibration. The control vibration is output from 65, the residual component (vibration that cannot be canceled out) is calculated from the vibration collected by the vibration sensor 69, and prediction calculation by adaptive control is performed so that the vibration at the position of the vibration sensor 69 is minimized. Is done.

  The present invention has been described above based on the embodiments. However, the present invention is not limited to the above embodiments, and various improvements and modifications can be made without departing from the spirit of the present invention. It can be easily guessed.

  For example, the numerical values given in the above embodiments are merely examples, and other numerical values can naturally be adopted.

  In the first embodiment, the case where the vibration isolator 6 is configured by superimposing the vibration isolator rubber member 61 on the actuator device 65 has been described. However, the present invention is not necessarily limited thereto. Of course, it is possible to omit this. That is, only the actuator device 65 may be interposed between the floor receiving member 5 and the interior floor board 7 (no vibration isolation rubber member 61 is interposed).

  In each of the embodiments described above, the case where the vibration isolating rubber member 61 is disposed above the actuator device 65 (on the interior floor board 7 side) has been described. However, the present invention is not necessarily limited to this, and the reverse arrangement (i.e., Naturally, the actuator device 65 is located on the interior floor board 7 side and the vibration-proof rubber member 61 is located on the floor receiving member 105 side).

  In each of the above embodiments, the case where the piezo elements constituting the actuator device 65 are configured in an annular shape having a circular outer shape has been described. However, the shape is not necessarily limited to this shape, and other shapes are used. Is of course possible. Examples of other shapes include a square and a rectangular outer shape.

  In each of the above-described embodiments, the case where the actuator devices 65 are provided at two locations on the interior floor board 7 side and the cross beam 3b side for one railway vehicle has been described. However, the present invention is not necessarily limited to this. The actuator device 65 may be provided only on one side.

  In each of the above embodiments, a case has been described in which each of the interior floor boards 7a, 7b,... Of the plurality of interior floor boards 7 is supported via a total of twelve vibration isolators 6 (FIG. 5), the number of the anti-vibration devices 6 is not necessarily limited to this, and other numbers (11 or less or 13 or more) can naturally be used. The number can be changed as appropriate for each of the interior floor boards 7a, 7b,... According to the arrangement of the underfloor equipment 12 and the stool 9.

  Further, in this case, it is not always necessary that the anti-vibration devices 6 that support the interior floor boards 7a, 7b,... All (for example, all twelve) are composed of the anti-vibration rubber member 61 and the actuator device 65. For example, it is naturally possible that some of the twelve anti-vibration devices 6 are composed of the anti-vibration rubber member 61 and the actuator device 65, and the rest are composed of only the anti-vibration rubber member 61 or only the actuator device 65. It is.

  In each of the above-described embodiments, the case where one vibration sensor 69 is associated with one actuator device 65 has been described. However, the present invention is not necessarily limited to this, and two or more actuator devices 65 are provided. One vibration sensor 69 may be associated. In other words, two or more actuator devices 65 may be controlled based on the vibration detected by one vibration sensor 69. The same applies to the vibration sensor 269.

  In the third embodiment, the underfloor equipment 12 is described as an example of the vibration source on which the vibration sensor 269 is installed on the feedforward side, but this is an example, and the vibration sensor is located at another position (another equipment, etc.). It is naturally possible to install H.269. Similarly, in any of the feedback type and the feedforward type, it is naturally possible to set the evaluation position where the vibration sensor 69 is installed to another position different from the above description.

  In each of the above-described embodiments, the case where the lower surface of the lower metal fitting 64 of the anti-vibration rubber member 61 and the upper surface of the upper insulating plate 67 of the actuator device 65 are each configured as a flat surface has been described. Of course, other shapes are possible.

  For example, a convex portion may be provided on one of the lower surface of the lower metal fitting 64 or the upper surface of the upper insulating plate 67 and a concave portion fitted to the convex portion may be provided on the other. Alternatively, a wall portion may be erected on one peripheral portion of the lower metal fitting 64 or the upper insulating plate 67, and the other peripheral portion (outer peripheral side) may be fitted to the inner peripheral side of the wall portion. . Thereby, not only the adhesive fixing by the adhesive means but also the fixing force by the fitting can be used to prevent the lateral displacement, so that the vibration isolating rubber member 61 and the actuator device 65 are firmly fixed. Thus, the reliability can be improved.

  In each of the above-described embodiments, the case where the lower metal fitting 64 and the upper insulating plate 67 are bonded and fixed by the bonding means has been described. However, the present invention is not necessarily limited thereto. The plate 67 may be bonded and fixed to the vibration isolation base 62 by an adhesive means, or the upper insulating plate 67 may be omitted and the lower metal fitting 64 may be bonded and fixed to the actuator portion 66.

It is the elements on larger scale which partially showed the floor structure of the rail car in a 1st embodiment. It is sectional drawing of the floor structure in the II-II line of FIG. It is sectional drawing of the floor structure in the III-III line of FIG. It is a perspective view of an actuator part. It is a top view of an interior floor board. It is the elements on larger scale of the support structure of the underfloor apparatus which expanded and showed the VI section of FIG. It is sectional drawing of the support structure of the underfloor apparatus in the VII-VII line of FIG. It is a block diagram of an active damping device. It is a graph which shows the result of having measured the vibration acceleration level of an interior floor board. It is a graph which shows the result of having measured the vibration acceleration level of an interior floor board. It is a partial expanded sectional view of the support structure of the underfloor apparatus in 2nd Embodiment. It is sectional drawing of the support structure of the underfloor apparatus in the XII-XII line | wire of FIG. It is a block diagram of the active damping device in a 3rd embodiment.

Explanation of symbols

1,100 Railway vehicle 3 Undercarriage 3a Side beam 3b Cross beam 4 Structure floor 5 Floor receiving member 6 Vibration isolator (part of active vibration suppressor)
61 Anti-vibration rubber member (part of anti-vibration device)
62 Anti-vibration base 63 Upper bracket (one or the other of the mounting members)
64 Lower bracket (the other or one of the mounting members)
65,165 Actuator device (part of anti-vibration device)
66 Actuator (part of the actuator device)
67 Upper insulating plate (fixing member)
68 Lower insulation plate (fixing member)
7 Interior floor boards 8a, 18a Bolt member 12 Underfloor equipment 30, 230 Active vibration control device 69, 269 Vibration sensor (sensor device)

Claims (3)

A base frame having a pair of side beams and a plurality of horizontal beams connecting the side beams, a structural floor attached to the base frame, a floor receiving member erected on the structural floor, and the floor support In an active vibration damping device configured by providing a vibration isolator between the interior floor plate and a floor receiving member of a railway vehicle including an interior floor plate supported by the structural floor by a member,
The vibration isolator includes an anti-vibration rubber member made of a rubber-like elastic material, and an actuator device that generates an excitation force.
The vibration damping rubber member and the actuator device are arranged in an overlapping manner between the interior floor board and the floor receiving member.   The active vibration damping device according to claim 1, wherein the actuator device is a piezo actuator configured by stacking a plurality of piezo elements. The anti-vibration rubber member includes an anti-vibration base made of a rubber-like elastic material and a pair of attachment members that are vulcanized and bonded to the anti-vibration base, and the actuator device is bonded and fixed to the piezoelectric actuator. A fixing member to be provided,
One of the pair of mounting members is fastened and fixed to the interior floor plate or floor receiving member, and the fixing member is fastened and fixed to the floor receiving member or interior floor plate, and the other of the pair of mounting members The active vibration damping device according to claim 2, wherein the vibration damping device is directly and indirectly bonded and fixed to the piezo actuator.

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