CN108344883A - A kind of positive step acceleration exciting bank - Google Patents

A kind of positive step acceleration exciting bank Download PDF

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Publication number
CN108344883A
CN108344883A CN201810114619.3A CN201810114619A CN108344883A CN 108344883 A CN108344883 A CN 108344883A CN 201810114619 A CN201810114619 A CN 201810114619A CN 108344883 A CN108344883 A CN 108344883A
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CN
China
Prior art keywords
block
mounting blocks
positive
module
drawstring
Prior art date
Application number
CN201810114619.3A
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Chinese (zh)
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CN108344883B (en
Inventor
何闻
郑定洋
贾叔仕
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浙江大学
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Priority to CN201810114619.3A priority Critical patent/CN108344883B/en
Publication of CN108344883A publication Critical patent/CN108344883A/en
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Publication of CN108344883B publication Critical patent/CN108344883B/en

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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01PMEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P21/00Testing or calibrating of apparatus or devices covered by the preceding groups
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01LMEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L25/00Testing or calibrating of apparatus for measuring force, torque, work, mechanical power, or mechanical efficiency

Abstract

The invention discloses a kind of positive step acceleration exciting bank, include mounting blocks for installing corrected sensor and the transmission block of step force is provided for mounting blocks, mounting blocks transmit block rear, transmitting block has the transmission end that can be contacted with mounting blocks preceding;Block is transmitted to be installed in hyperbaric chamber, the transmission end for transmitting block exposes to hyperbaric chamber, it transmits block and bears the air pressure in hyperbaric chamber, transmit block with the connecting pin being connect with drawstring, drawstring is connect with force module, for the module that exerts a force after transmitting block, air pressure is opposite with the pulling force of drawstring to transmitting the thrust that block generates.The present invention provides positive step acceleration pumping signal when drawstring is broken, using the air pressure in high-pressure chamber to transmitting block, therefore compared with common pulse excitation signal, the waveform controllability of the positive step acceleration pumping signal and reproducible.

Description

A kind of positive step acceleration exciting bank

Technical field

The present invention relates to the fields of measurement of vibrating sensor, especially a kind of schools for calibrating vibrating sensor sensitivity Standard apparatus.

Technical background

Vibrating sensor is the sensor for detecting impact force or acceleration.The school of the Coulomb sensitivity of vibrating sensor It in quasi- method, usually using gas big gun as power source, is moved by compressed gas-driven body, hits the anvil for being equipped with corrected sensor Body, corrected sensor bear mechanical shock impulse action, measure corrected sensor output and movement velocity variation, calculate by The Coulomb sensitivity of school sensor.

Chinese patent 201010531623.3 discloses a kind of gas big gun excitation crash device, by collision system and recycling System forms, and collision system and recovery system coaxial arrangement, the shock of compressed gas-driven active bullet, which is equipped with, is calibrated acceleration The anvil body of sensor, anvil body are instantaneously detached from supporting surface, and system recycling is recovered after free flight a distance.This gas big gun excitation The shortcomings that pumping signal that crash device generates is pulse acceleration signal, the device is:The pulse acceleration peak value of generation Retention time is short, it is more difficult to accurately measure acceleration amplitude.

Invention content

The object of the present invention is to provide a kind of vibrating sensors in dynamic calibration, and the peak value of positive step acceleration is protected It holds that the time is long, can accurately measure the calibrating installation of the vibrating sensor of acceleration amplitude.

Positive step acceleration exciting bank includes mounting blocks for installing corrected sensor and provides step for mounting blocks The transmission block of power, mounting blocks transmit block rear, transmitting block has the transmission end that can be contacted with mounting blocks preceding;Transmit block peace Hyperbaric chamber is exposed to loaded on the transmission end in hyperbaric chamber, transmitting block, block is transmitted and bears the air pressure in hyperbaric chamber, that transmits block has The connecting pin being connect with drawstring, drawstring are connect with force module, and force module is after transmitting block, and air pressure is to transmitting block generation Thrust is opposite with the pulling force of drawstring;When drawstring is broken, transmits block and positive step force is applied to mounting blocks under gas pressure;Exert a force mould There is block pull rod, electric pushrod and push rod mounting base, pull rod to be connect with electric pushrod, have drawstring mounting portion on pull rod.Drawstring For steel wire rope.

Further, there are linear bearing component and pulling force sensor, linear bearing component between pull rod and electric pushrod component For a pair, between two linear bearing components, linear bearing component is made of pulling force sensor linear bearing and bearing block.

Further, drawstring mounting portion includes link block, compact heap and fastening bolt.Link block is carried out with pull rod by screw thread It is connected and fixed, is plane contact between compact heap and link block, drawstring passes through between compact heap and link block, and by turning The changeable pressing force between link block and compact heap of fastening bolt.

Further, the front end of pull rod is attached with drawstring mounting portion by screw thread, and the rear end of pull rod passes through linear bearing It is connect with pulling force sensor, pull rod is fixed with pulling force sensor by screw thread pair.

Further, pulling force sensor is connect with electric pushrod by connecting rod, and connecting rod passes through linear bearing and electric pushrod Connection, connecting rod are fixed by screw thread pair and pulling force sensor, electric pushrod respectively.

Mounting blocks are located in rail module, without friction between mounting blocks and rail module.Referred to be to say to rub without friction It wipes power can be ignored, rather than absolute frictional force is 0.

Mounting blocks and rail module friction free rail module concrete structure can be realized by providing one kind:Rail module is by leading Rail and mounting base composition, guide rail have the hole coordinated with mounting blocks, there is gap between mounting blocks and guide rail, and branch is filled in the gap Support lubricating film.

Further, guide rail is air-float guide rail, and air-float guide rail includes lower air supporting support member and upper air supporting support member, lower gas Floating support member and upper air supporting support member surround the hole coordinated with mounting blocks jointly, and support lubricating film is air film.

Further, lower air supporting support member and upper air supporting support member are respectively provided with the gentle connector of venthole, air admission hole, gas Connector is installed on air admission hole, and gas connector is connected to low-pressure gas source;The gas overflowed from venthole forms above-mentioned air film.

Further, upper air supporting support member is attached fixation with lower air supporting support member by bolt.

It is as follows to provide a kind of concrete structure of high-pressure chamber:Hyperbaric chamber has cylinder and blind flange, and cylinder and blind flange enclose At high-pressure chamber;Cylinder and blind flange are equipped with the vessel for accommodating and transmitting block, and vessel is from axially penetrating through cylinder and blind flange;High pressure Cabin, which has, prevents to transmit the backstop that block is detached from hyperbaric chamber from rear.When drawstring exerts a force from rear to transmitting block, backstop supports Block is firmly transmitted, prevents to transmit block disengaging hyperbaric chamber.

Further, transmitting block has the pulling force stress surface for bearing the thrust stress surface of air pressure and being pushed against by backstop, transmits The connecting pin of block exposes to hyperbaric chamber, and pulling force stress surface is located at before connecting pin, and connecting pin is equipped with the aperture passed through for drawstring.

Further, transmitting block has ontology, and there are two steps for tool on ontology, and the step surface of preceding first step is thrust Stress surface, thrust stress surface are exposed to high-pressure chamber, and the step surface of posterior second step is pulling force stress surface.

Further, air admission hole, monitoring holes and relief hole, air admission hole connect by pressure reducing valve and high-pressure air source on cylinder It connects, monitoring holes, which are connected through a screw thread, is equipped with pressure sensor, and for monitoring the pressure change in cavity in real time, relief hole passes through Threaded connection is equipped with safety valve, and when cavity pressure is more than design value, then safety valve is opened.

Further, it is sealed using metal plain cushion between cylinder and blind flange, and fixation is attached by bolt.

It is as follows to provide a kind of concrete structure of force module:

Buffer limit module is fixedly mounted before mounting blocks, after transmission block excitation mounting blocks travel forward, mounting blocks connect Contact stop motion after buffer limit module.A kind of specific knot of the buffer limit module for the kinetic energy that can absorb mounting blocks is provided Structure is as follows:

Buffer limit module is fixed on before mounting blocks, and buffer limit module has cushioning support-saddle, buffer and gag lever post, Buffer is fixed on cushioning support-saddle, and gag lever post is installed on buffer, and gag lever post is the component for being in direct contact mounting blocks.Pass through limit The setting of pole length, to realize the control to mounting blocks move distance.

Further, buffer has multiple, and multiple buffers are symmetrical along short transverse.

Further, gag lever post one end is fixed with buffer, is fixed with cushion pad on the other end.Gag lever post one end and buffer It is connected through a screw thread, the gag lever post other end is connect with cushion pad by glue, the quality such as cushion pad generally use felt or rubber Softer material, for avoiding limit process from generating rigid collision.

Further, be provided on cushioning support-saddle allow laser interferometer light path by measured hole, laser interferometer swash Optical registration mounting blocks.Laser interferometer measurement obtains the movement velocity of mounting blocks.

Further, there is calibrating installation pedestal, hyperbaric chamber, rail module, force module and buffer limit module to lead to respectively Respective mounting plate is crossed to be fixedly connected with pedestal;Hyperbaric chamber, rail module, force module and the mutual centering of buffer limit module.

Further, pedestal is equipped with positioning groove, and each mounting plate is matched with positioning groove respectively, and is bolted In on pedestal;The cylinder of hyperbaric chamber and the mounting plate of hyperbaric chamber are fixed, and the mounting base and rail module mounting plate of rail module are solid It is fixed;It is respectively equipped with respective T-slot on the mounting plate of buffer limit module and the mounting plate of force module, cushioning support-saddle is limited with buffering The mounting plate of position module is attached fixation by T-nut, and the bearing block and the mounting plate of force module of the module that exerts a force pass through T Type nut is attached fixation;T-nut is located in respective T-slot.

In the use of the present invention, corrected sensor is mounted on mounting blocks first, then mounting blocks are led mounted on air supporting On rail, then steel wire compacting part is driven to move to push rod limit on the right-right-hand limit position by controlling electric pushrod, then wire passes through The aperture of block one end is transmitted, then passes through the gap among link block and compact heap, taut wire line simultaneously to tighten fastening wire Then bolt is arranged air pressure size P, and keeps the stable gas pressure in high-pressure chamber.

It transmits block and moves to transmission block limit on the left position under the influence of air pressure, then control electric pushrod and drive wire It stretches to the right, transmits block and moved right transmission block limit on the right-right-hand limit position by the active force of wire, moving mounting blocks at this time makes Its end face is in close contact with block end face is transmitted, and is then controlled electric pushrod and is continued to move right, the pulling force that wire is subject to is rapid Increase, until suffered pulling force is more than the ultimate tension of wire, wire is broken suddenly.

Positive step acceleration generates process:When wire is broken suddenly, transmission block is pushed installation by positive step active force Block and corrected sensor travel forward jointly, and then generate positive step acceleration, are then done jointly under the action of air cavity pressure Uniformly accelerated motion.

When the left end face of mounting blocks and the cushion pad of limiting component collide limit, the kinetic energy of mounting blocks passes through buffering Device absorbs, and final mounting blocks and corrected sensor are stopped in extreme position, and sensor calibration processes terminate.

Advantages of the present invention is as follows:

1, when drawstring is broken, positive step acceleration pumping signal is provided to transmitting block using the air pressure in high-pressure chamber, Air pressure is controllable it is found that therefore compared with common pulse excitation signal, the waveform controllability of the positive step acceleration pumping signal And it is reproducible.

2, using the acceleration energisation mode of double quality blocks impact separation, the failing edge time of negative step acceleration reaches micro- Second grade, therefore the frequency range analyzed can reach 100,000 hertz of ranks.

Description of the drawings

The practical step signal time-domain curves of Fig. 1.

The practical step signal frequency curves of Fig. 2.

Fig. 3 double quality blocks schematic diagrames.

Fig. 4 exciting bank general illustrations.

Fig. 5 hyperbaric chamber structure sectional views.

Fig. 6 rail module structural schematic diagrams.

Fig. 7 force modular structure vertical views.

Fig. 8 buffer limit modular structure schematic diagrams.

Fig. 9 step Acceleration pulse schematic diagrames.

Specific implementation mode

In systems in practice, ideal step signal is not present, and the rising edge or failing edge of step signal certainly exist Transit time τ, it is believed that be with sloping step signal, practical step signal curve is as shown in Figure 1.When transit time τ becomes When being bordering on 0, practical step signal then becomes ideal step signal.Practical step signal x*(t) it is represented by

For effective unit phase step response signals x*(t), frequency spectrum function is

It is illustrated in figure 2 amplitude-versus-frequency curve when τ=0.03s.Figure it is seen that practical step signal is certain The amplitude of Frequency point is zero, is enabled

It can obtain, ω τ=2k π (k=1,2,3L), i.e.,It therefore can be with corresponding to transit time τ The highest frequency of analysis is

By above formula can with it is concluded that:Transit time, τ was smaller, then the non-zero bandwidth of step signal is wider.

It is quasi- to generate step acceleration using two two mass blocks impact separation, as shown in figure 3, respectively installation quality block With Transfer Quality block, referred to as mounting blocks and transmission block.

Mounting blocks and transmission block just start mutually to be close to, and it is common under the action of positive step force to transmit block right-hand axis shoulder end face Movement generates positive step acceleration, that is, obtains a certain size step acceleration amplitude;Then uniformly accelerated motion is for a period of time Afterwards, block left-hand axis shoulder end face being transmitted suddenly to be stopped, mounting blocks are generated by negative step force effect and bear step acceleration, and It is rapidly separated with block is transmitted, continues uniform forward motion under the action of inertia.

As shown in figure 4, positive step acceleration exciting bank includes hyperbaric chamber 2, rail module 3, force module 4, buffering limit The pedestal 1 of position module 5, wire 6 and fixed above each function module.

As shown in figure 5, in one embodiment, hyperbaric chamber is to provide driving to block is transmitted for ensureing intracavitary hyperbar Air pressure, including cylinder 21, blind flange 29, backstop 26.It is sealed using metal plain cushion 28 between cylinder 21 and blind flange 29, And fixation is attached by bolt 25.It transmits block 22 to be mounted in the plunger shaft that cylinder 21 and blind flange 29 form, and can be with Along axial-movement in plunger shaft.Backstop 26 is connected and fixed with blind flange 29 using bolt 27.In addition, pressure sensor 210 It is connected through a screw thread fixation with cylinder 21, safety valve 24 is connected through a screw thread fixation with cylinder 21.

As shown in fig. 6, in one embodiment, rail module includes upper air supporting support member 31 and lower air supporting support member 34, and air supporting support member is connected and fixed by bolt 33 up and down.Mounting blocks 32 are in upper air supporting support member 31 and lower air supporting Between support member 34, as shown in figure 3, the right end face of mounting blocks 32 and transmission 22 left side spherical surface of block are tangent, 32 energy of mounting blocks Tandem is carried out under the promotion for transmitting block 22 along air-float guide rail to move,

As shown in fig. 7, in one embodiment, force module includes mounting plate 41, steel wire compacting part, left/right straight line Bearing 47/416, left/right bearing block 46/49, push rod mounting base 414, pull rod 45, connecting rod 410, electric pushrod 412 and pulling force Sensor 48.Mounting plate 41 is matched with the positioning groove of pedestal, and is attached fixation by bolt, has T on mounting plate 41 Type groove, left and right bearing block 46/49 are attached fixation, left/right linear bearing 47/417 with mounting plate 41 by T-nut 415 Round flange face and left/right bearing block 46/49 position, and fixation is attached by bolt;

The steel wire compacting part includes link block 42, compact heap 44 and fastening bolt 43.Link block 42 is logical with pull rod 45 It crosses screw thread and is attached fixation, be plane contact between compact heap 44 and link block 42, one end of wire 6 is from 44 He of compact heap It is passed through between link block 42, and pressing force between link block 42 and compact heap 44 can be changed by turning fastening bolt 43, from And changing the compression degree of wire 6, the other end of wire 6 is connect with the aperture for transmitting 22 right end of block.

Pull rod 45 coordinates with left linear bearing 47, and one end of pull rod 45 is attached with link block 42 by screw thread, separately One end is attached by screw thread and pulling force sensor 48.Connecting rod 410 coordinates with right linear bearing 416, and the one of connecting rod 410 End is connect by screw thread with pulling force sensor 48, and other end protrusive board is connected by the head recess of pin 411 and electric pushrod 412 It connects, i.e. 48 left and right ends of pulling force sensor are attached by screw thread and pull rod 45 and connecting rod 410 respectively, for monitoring in real time Transmit tension variations suffered by block.The retaining groove of electric pushrod 412 is connect by pin 413 with the protrusive board of push rod mounting base 414, Push rod mounting base 414 is connected and fixed by bolt and pedestal.

As shown in figure 8, in one embodiment, buffer limit component includes mounting plate 51, cushioning support-saddle 53, buffer 54 And limiting component.Mounting plate 51 is matched with the positioning groove of pedestal, and is attached fixation by bolt, is had on mounting plate 51 T-slot, cushioning support-saddle 53 are attached fixation with mounting plate 51 by T-nut 52, and the middle part trepanning of cushioning support-saddle 53 is convenient for The light path of laser interferometer passes through, the movement velocity for measuring mounting blocks 32.Hydraulic type buffer 54 is logical with cushioning support-saddle 53 It crosses threaded connection to fix, the kinetic energy for absorbing consumption mounting blocks.

The limiting component includes gag lever post 55 and cushion pad 56.55 one end of gag lever post passes through spiral shell with hydraulic type buffer 54 Line connects, and 55 other end of gag lever post is be bonded by glue with cushion pad 56, the quality such as 56 generally use felt of cushion pad or rubber Softer material, for avoiding limit process from generating rigid collision.In addition, the T-slot along mounting blocks 51 moves, buffering branch is adjusted The position of seat, thus it is possible to vary the limit distance of mounting blocks 32.

In the use of the present invention, corrected sensor 7 is mounted on mounting blocks 32 first, then by mounting blocks 32 mounted on upper Between air supporting support member 31 and lower air supporting support member 34.Reset operation is first carried out before the experiments, that is, controls electric pushrod 412 drive steel wire compacting parts move to the limit on the right-right-hand limit position of push rod, and then wire 6 passes through the aperture for transmitting 22 one end of block, The gap among link block 42 and compact heap 44, taut wire line 6 is passed through simultaneously to tighten fastening bolt 43 wire 6 again, then Air pressure size is set according to requirement of experiment, and keeps the stable gas pressure in high-pressure chamber.

It transmits block 22 and moves to transmission block limit on the left position under gas pressure, then carry out load operation, control is electronic Push rod 412 drives wire 6 to pull to the right, transmits block 22 and is moved right 22 right pole of transmission block by the active force of wire 6 Extreme position pushes mounting blocks 32 that its right end face is made to be in close contact with 22 left side spherical surface of block is transmitted, then controls electronic push away at this time Bar 412 continues to move right, and the pulling force that wire 6 is subject to increases rapidly, until suffered pulling force is more than the tensile strength of wire 6 The limit, wire 6 are broken suddenly.If necessary to stop loading procedure, unloading operation can be carried out, controls electric pushrod 412 move downward, and wire 6 gradually relaxes, and transmit block 22 and move to the left side for transmitting block 22 again under the influence of air pressure Extreme position.

Negative step acceleration generates process:When wire 6 is broken suddenly, transmission 22 right-hand axis shoulder end face of block is by air pressure Positive step active force pushes mounting blocks 32 and corrected sensor 4 to travel forward jointly, and then generates positive step acceleration (OA Section), then do uniformly accelerated motion (AB sections) jointly under the action of air cavity pressure, as shown in Figure 9.

When the left end face of mounting blocks 32 and the cushion pad 56 of limiting component collide limit, the kinetic energy of mounting blocks 32 is logical The absorption of hydraulic type buffer 54 is crossed, final mounting blocks 32 and corrected sensor 7 are stopped in extreme position, sensor calibration processes knot Beam.Content described in this specification embodiment is only enumerating to the way of realization of present inventive concept, protection model of the invention It encloses and is not construed as being only limitted to the concrete form that embodiment is stated, protection scope of the present invention is also and in people in the art Member according to present inventive concept it is conceivable that equivalent technologies mean.

Claims (10)

1. positive step acceleration exciting bank, it is characterised in that:Exciting bank includes the mounting blocks for installing corrected sensor With the transmission block for providing step force for mounting blocks, mounting blocks transmit block rear, transmitting block has and can be contacted with mounting blocks preceding Transmission end;It transmits block to be installed in hyperbaric chamber, the transmission end for transmitting block exposes to hyperbaric chamber, transmits block and bears in hyperbaric chamber Air pressure, transmit block with the connecting pin being connect with drawstring, drawstring connect with force module, the module that exerts a force after transmitting block, Air pressure is opposite with the pulling force of drawstring to transmitting the thrust that block generates;When drawstring is broken, block is transmitted under gas pressure to mounting blocks Apply positive step force;The module that exerts a force has pull rod, and electric pushrod and push rod mounting base, pull rod are connect with electric pushrod, on pull rod With drawstring mounting portion;There are linear bearing component and pulling force sensor, linear bearing component between pull rod and electric pushrod component For a pair, between two linear bearing components, linear bearing component is made of pulling force sensor linear bearing and bearing block.
2. positive step acceleration exciting bank as described in claim 1, it is characterised in that:Drawstring mounting portion include link block, The front end of compact heap and fastening bolt, pull rod is attached with drawstring mounting portion by screw thread, and the rear end of pull rod passes through linear axis It holds and is connect with pulling force sensor, pull rod is fixed with pulling force sensor by screw thread pair, and pulling force sensor is with electric pushrod by connecting rod Connection, connecting rod connect across linear bearing with electric pushrod, connecting rod respectively by screw thread pair and pulling force sensor, electronic push away Bar is fixed.
3. positive step acceleration exciting bank as claimed in claim 1 or 2, it is characterised in that:Rail module is by guide rail and peace Seat composition is filled, guide rail has the hole coordinated with mounting blocks, there is gap between mounting blocks and guide rail, filling support lubrication in the gap Film.
4. the positive step acceleration exciting bank as described in one of claim 1-3, it is characterised in that:Hyperbaric chamber have cylinder and Blind flange, cylinder and blind flange surround high-pressure chamber;Cylinder and blind flange are equipped with the vessel for accommodating and transmitting block, and vessel is from axial direction Through cylinder and blind flange;Hyperbaric chamber, which has, prevents to transmit the backstop that block is detached from hyperbaric chamber from rear.
5. positive step acceleration exciting bank as claimed in claim 4, it is characterised in that:Transmission block, which has, bears pushing away for air pressure Power stress surface and the pulling force stress surface pushed against by backstop, the connecting pin for transmitting block expose to hyperbaric chamber, and pulling force stress surface is located at Before connecting pin, connecting pin is equipped with the aperture passed through for drawstring.
6. positive step acceleration exciting bank as claimed in claim 5, it is characterised in that:Transmitting block has ontology, on ontology There are two steps for tool, and the step surface of preceding first step is thrust stress surface, and thrust stress surface is exposed to high-pressure chamber, rear Second step step surface be pulling force stress surface.
7. positive step acceleration exciting bank as claimed in claim 6, it is characterised in that:There are air admission hole, monitoring on cylinder Hole and relief hole, air admission hole are connect by pressure reducing valve with high-pressure air source, and monitoring holes, which are connected through a screw thread, is equipped with pressure sensor, For monitoring the pressure change in cavity in real time, relief hole, which is connected through a screw thread, is equipped with safety valve, when cavity pressure is more than to set Evaluation, then safety valve unlatching, is sealed between cylinder and blind flange using metal plain cushion, and be attached fixation by bolt.
8. the positive step acceleration exciting bank as described in one of claim 1-7, it is characterised in that:The module that exerts a force, which has, draws Bar, electric pushrod and push rod mounting base, pull rod are connect with electric pushrod, have drawstring mounting portion on pull rod.
9. positive step acceleration exciting bank as described in one of claim 1-8, it is characterised in that:Buffer limit module is fixed Before mounting blocks, there is buffer limit module cushioning support-saddle, buffer and gag lever post, buffer to be fixed on cushioning support-saddle, delay It rushes and gag lever post is installed on device, gag lever post is the component for being in direct contact mounting blocks.
10. the positive step acceleration exciting bank as described in one of claim 1-9, it is characterised in that:Calibrating installation has base Seat, hyperbaric chamber, rail module, force module and buffer limit module are fixedly connected by respective mounting plate with pedestal respectively; Hyperbaric chamber, rail module, force module and the mutual centering of buffer limit module.
CN201810114619.3A 2018-02-05 2018-02-05 Positive step acceleration exciting device CN108344883B (en)

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CN108344883B CN108344883B (en) 2020-04-03

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Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6792811B2 (en) * 2002-03-04 2004-09-21 The Regents Of The University Of Michigan Method and system for measuring vibration of an object
JP2005345215A (en) * 2004-06-02 2005-12-15 National Institute Of Advanced Industrial & Technology Apparatus and method for dynamically calibrating pressure sensor
JP2006023266A (en) * 2004-07-07 2006-01-26 Hitoshi Arisei Method and device for generating horizontal-directional reference force
CN101980027A (en) * 2010-11-04 2011-02-23 西安近代化学研究所 Gas gun excitation and collision device of laser Doppler velocity measurement impact calibration system
CN103712744A (en) * 2014-01-10 2014-04-09 浙江大学 Positive step force testing system
CN103728095A (en) * 2014-01-10 2014-04-16 浙江大学 Negative step force testing system
CN105606847A (en) * 2016-03-01 2016-05-25 清华大学 Vibration station for transverse sensitivity calibration of piezoelectric acceleration sensor
CN105606207A (en) * 2016-01-29 2016-05-25 湖南省计量检测研究院 Calibration apparatus and calibration method applied to vibration sensor
CN106969826A (en) * 2017-04-10 2017-07-21 西安航天动力试验技术研究所 The calibrating installation and calibration method of a kind of vibrating sensor
CN206656799U (en) * 2017-04-28 2017-11-21 中国地震局工程力学研究所 A kind of caliberating device for vibrating sensor

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6792811B2 (en) * 2002-03-04 2004-09-21 The Regents Of The University Of Michigan Method and system for measuring vibration of an object
JP2005345215A (en) * 2004-06-02 2005-12-15 National Institute Of Advanced Industrial & Technology Apparatus and method for dynamically calibrating pressure sensor
JP2006023266A (en) * 2004-07-07 2006-01-26 Hitoshi Arisei Method and device for generating horizontal-directional reference force
CN101980027A (en) * 2010-11-04 2011-02-23 西安近代化学研究所 Gas gun excitation and collision device of laser Doppler velocity measurement impact calibration system
CN103712744A (en) * 2014-01-10 2014-04-09 浙江大学 Positive step force testing system
CN103728095A (en) * 2014-01-10 2014-04-16 浙江大学 Negative step force testing system
CN105606207A (en) * 2016-01-29 2016-05-25 湖南省计量检测研究院 Calibration apparatus and calibration method applied to vibration sensor
CN105606847A (en) * 2016-03-01 2016-05-25 清华大学 Vibration station for transverse sensitivity calibration of piezoelectric acceleration sensor
CN106969826A (en) * 2017-04-10 2017-07-21 西安航天动力试验技术研究所 The calibrating installation and calibration method of a kind of vibrating sensor
CN206656799U (en) * 2017-04-28 2017-11-21 中国地震局工程力学研究所 A kind of caliberating device for vibrating sensor

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
谢晓竹: "《一种力的动态测试和仿真》", 《系统仿真学报》 *

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