CN108225800B - 1/4 automobile active suspension test system - Google Patents
1/4 automobile active suspension test system Download PDFInfo
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- CN108225800B CN108225800B CN201810205291.6A CN201810205291A CN108225800B CN 108225800 B CN108225800 B CN 108225800B CN 201810205291 A CN201810205291 A CN 201810205291A CN 108225800 B CN108225800 B CN 108225800B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
- G01M17/04—Suspension or damping
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
Abstract
The invention discloses a 1/4 automobile active suspension test system which comprises a test bench and a data acquisition and control system, wherein the test bench comprises an iron floor, an excitation device assembly, a sprung mass assembly, a support frame assembly provided with a linear guide rail pair, a rotating motor and a winch, the data acquisition and control system comprises two acceleration sensors, five displacement sensors, a force sensor, a data acquisition card, a power amplifier and a computer, and the computer is in signal connection with the data acquisition card. According to the invention, the influence of the friction force of the linear guide rail is considered, the rotating motor is additionally arranged to carry out friction force compensation control, the sprung mass component can be connected with independent suspension systems in different forms, an active suspension or semi-active suspension test and a test of a novel shock absorber can be carried out, the linear motor is adopted as a vibration source, the height of the whole rack is reduced, the control is convenient, the installation of the sprung mass is convenient by adopting the winch, and the shock absorber and the spring performance test can be independently carried out.
Description
Technical Field
The invention relates to a 1/4 automobile active suspension test system, and belongs to the technical field of automobile suspension tests.
Background
Suspension systems are an important component of all vehicles, the main function of which is to bear the weight of the vehicle body, attenuate the excitation of irregularities from the road surface and provide good tire road contact to ensure the running safety of the vehicle. The active suspension and the semi-active suspension can well give consideration to the smoothness and the operation stability of the automobile. The control force of the semi-active suspension system is generated by a CDC shock absorber or a magneto-rheological shock absorber, and a zenith control algorithm and a self-adaptive control algorithm are generally adopted on a real vehicle at present. Semi-active suspensions have better stability than active suspensions, but the control effect is relatively poor. Because of high energy consumption of the active actuator, unstable control algorithm and the like, the active suspension has not been widely used. Current research is focused on further improving the control algorithms of semi-active suspensions and increasing the utility of active suspensions. Thus, experimental verification of the novel algorithm and novel actuator is necessary.
At present, when an active/semi-active suspension of an automobile is developed and improved, a whole automobile test or a real automobile road surface test is generally carried out through electro-hydraulic servo road simulation test systems of MTS company in the U.S. and SCHEMCK company in Germany. However, electro-hydraulic servo road simulation test systems are extremely expensive to manufacture and are not available to general research units or suspension system suppliers. And the actual vehicle road surface test also needs an expensive dSPACE control system and labor cost, and the test safety is difficult to ensure. The 1/4 automobile model is the most commonly used model for evaluating suspension performance, performing suspension optimization design and controller development. There are many 1/4 automotive suspension test beds currently used for passive suspension system tests, such as the variable stiffness virtual vehicle body clamp suspension test bed with publication number CN104048823a and the automotive suspension test bed with publication number CN103954459 a. However, the suspension structure of the 1/4 automobile suspension test bed for the semi-active/active suspension is greatly simplified relative to a real automobile, for example, an automobile quarter simulation electromagnetic suspension, a mechanical vibration exciter and a test bed thereof with the publication number of CN104897420A do not consider the influence of suspension structural members such as a suspension control arm, a steering pull rod and the like, and the test bed cannot perform the test of a real suspension system and has no universality. And most active suspension experiments need to be done with expensive dsace equipment. In addition, current 1/4 automotive suspension test benches do not have the ability to perform shock absorber and spring performance tests.
Disclosure of Invention
The invention aims to provide a 1/4 automobile active suspension test system to solve the problems in the background technology. The invention provides the following technical scheme:
the 1/4 automobile active suspension test system comprises a test bench and a data acquisition and control system, wherein the test bench comprises an iron floor, an excitation device assembly provided with a linear excitation motor, a sprung mass assembly, a support frame assembly (8) provided with a linear guide rail pair, a rotating motor and a winch, a bottom plate of the excitation device assembly is fixedly connected with the iron floor through bolts and nuts, one end of the sprung mass assembly is connected with a slide block of the linear guide rail pair of the support frame assembly through bolts, the other end of the sprung mass assembly is connected with a suspension control arm and the upper end of a shock absorber through a connecting piece and a control motor, the support frame is fixedly connected with the iron floor through bolts, the rotating motor is connected with the lower end of the sprung mass assembly through steel wires, and the winch is connected with the upper end of the sprung mass assembly through steel wires through rollers of the support frame assembly; the data acquisition and control system comprises a first acceleration sensor for measuring the central acceleration of a hub of a suspension test piece, a first displacement sensor for measuring the deformation of a suspension spring, a second acceleration sensor and a second displacement sensor for measuring the acceleration and the displacement of a sprung mass component, a corner displacement sensor for measuring the displacement of a linear excitation motor, a rotating motor and a control motor, a force sensor for measuring the pressure applied by the suspension test piece to an excitation device component, a power amplifier, a data acquisition card for acquiring signals of the sensors and outputting electric signals to the power amplifier, and a computer connected with the data acquisition card, and is used for processing a data construction control algorithm and outputting control signals to the data acquisition card.
Further, the excitation device assembly sequentially comprises a portal frame, a linear excitation motor, a cylindrical linear guide rail, a spring, a lower connecting plate, a linear guide rail, a middle connecting plate, a force sensor, an upper connecting plate and a tire supporting disc from bottom to top, wherein the portal frame is formed by welding an upper supporting plate and a lower bottom plate through uniformly distributed channel steel, the middle part of the lower bottom plate is provided with a threaded hole for installing the linear excitation motor, the upper supporting plate is uniformly provided with a threaded hole for installing a cylindrical linear guide rail bearing and a through hole for passing an optical axis, and the middle part of the upper supporting plate is provided with a light hole for passing a linear excitation motor shaft; the spring is arranged between the bearing of the cylindrical linear guide rail and the lower connecting plate; holes for installing the optical axis of the cylindrical linear guide rail are formed in the periphery of the lower connecting plate, and holes for installing the linear guide rail are formed in the middle of the lower connecting plate; the linear guide rail is symmetrically arranged between the lower connecting plate and the middle connecting plate; the lower plate surface of the middle connecting plate is provided with a mounting threaded hole of the linear guide rail sliding block, and the upper plate surface of the middle connecting plate is provided with a mounting hole site of the force sensor; the force sensor is installed between the middle connecting plate and the upper connecting plate, and the upper connecting plate is provided with a force sensor and a mounting hole site of the tire supporting disc.
Further, the sprung mass assembly comprises a base plate, the back of the base plate is connected with a sliding block of a linear guide rail pair of the support frame assembly, and the front of the base plate is sequentially provided with an upper support frame assembly, an upper shock absorber point mounting seat for connecting a suspension shock absorber, an upper control arm front point mounting seat and an upper control arm rear point mounting seat for connecting a suspension upper control arm, a steering tie rod mounting seat for connecting a suspension steering tie rod, a lower control arm rear point mounting seat for connecting a suspension lower control arm and a lower control arm front point mounting seat from top to bottom.
Further, the upper support frame assembly comprises an L-shaped support frame provided with rib plates, a first hollow cylinder, a second hollow cylinder and a hanging ring are arranged on the upper surface of the support frame, and an installation seat and a control motor installation seat for fixing the control motor are arranged at the front part of the support frame.
Further, the upper control arm front point mounting seat and the upper control arm rear point mounting seat are respectively provided with a long round hole for adjusting the upper mounting position and the lower mounting position.
Further, the front point mounting seat of the lower control arm and the rear point mounting seat of the lower control arm are respectively composed of a base and a mounting seat which are sequentially connected, and long round holes for adjusting the mounting positions of the upper, lower, left and right are formed in the base and the mounting seat.
Further, the support frame subassembly includes the support frame, fixes at the support tower on support frame top, sets up at ordinary times the first linear guide pair, the second linear guide pair of support frame vertical face, fixed block, support frame top panel is provided with support tower installation screw hole, and its vertical face of installing the linear guide pair is through the smooth processing of surface and evenly be provided with the vice and second linear guide pair's of guide rail and the installation screw hole of fixed block, the bottom plate of support tower evenly is provided with a plurality of mounting hole sites and stiffening rib, two gyro wheels around the support tower top is installed, the vice and slider of second linear guide pass through the bolt respectively with support frame and sprung mass subassembly fixed connection.
Further, the fixed block is L-shaped, the middle part of fixed block is provided with the U-shaped groove that is used for embedding linear guide, the both sides in U-shaped groove are provided with the slotted hole that is connected with the perpendicular face of support frame installation linear guide pair.
Further, the linear excitation motor is controlled by speed and angular displacement, and the rotating motor and the control motor are controlled by torque.
Compared with the prior art, the invention has the beneficial effects that:
the invention provides a 1/4 automobile active suspension test system, which considers the motion of sprung mass, considers the influence of linear guide rail friction force, installs a rotating motor additionally for friction force compensation control, and allows a sprung mass component to be connected with independent suspension systems in different forms, to be provided with a linear motor and a damping variable shock absorber for active suspension or semi-active suspension test, to be provided with a novel shock absorber and a novel control algorithm, to be provided with a linear motor excitation system for reducing the height of the whole rack and facilitating control, to be provided with a support tower and a winch for facilitating installation of sprung mass, and to be provided with a shock absorber and a spring performance test independently.
Drawings
Fig. 1 is a schematic structural diagram of a test stand according to an embodiment of the present invention.
FIG. 2 is a block diagram of a data acquisition and control system in accordance with an embodiment of the present invention.
Fig. 3 is a schematic view of an excitation device assembly according to an embodiment of the present invention.
Fig. 4 is a schematic diagram of a sprung mass assembly according to an embodiment of the invention.
Fig. 5 is a schematic view of a support frame assembly according to an embodiment of the invention.
Fig. 6 is a schematic view of a support frame assembly according to an embodiment of the invention.
FIG. 7 is a schematic diagram of an assembly of a test rig according to an embodiment of the present invention when performing damper and spring performance tests.
The figure shows: the vibration excitation device assembly 2 comprises a portal frame 21, a linear excitation motor 22, a cylindrical linear guide rail 23, a spring 24, a lower connecting plate 25, a linear guide rail 26, an intermediate connecting plate 27, a force sensor 28, an upper connecting plate 29, a tire supporting disc 2a, a first acceleration sensor 3, a first displacement sensor 4, a second acceleration sensor 5, a sprung mass assembly 6, a base plate 61, an upper support frame assembly 62, a damper upper point mounting seat 63, an upper control arm front point mounting seat 64, an upper control arm rear point mounting seat 65, a steering tie rod mounting seat 66, a lower control arm rear point mounting seat 67, a lower control arm front point mounting seat 68, a support frame 621, a first hollow cylinder 622, a second hollow cylinder 623, a hanging ring 624, a mounting seat 625, a control motor mounting seat 626, a control motor 627, a second displacement sensor 7, a support frame assembly 8, a support frame 81, a support tower 82, a first linear guide rail pair 83, a second linear guide rail pair 84, a fixed block 85, a rotating motor 9 and a winch 10.
Detailed Description
The invention will be further described with reference to the accompanying drawings and specific examples.
Example 1
As shown in fig. 1 and 2, a 1/4 automobile active suspension test system comprises a test bench and a data acquisition and control system, wherein the test bench comprises an iron floor 1, an excitation device assembly 2 provided with a linear excitation motor 22, a sprung mass assembly 6, a support frame assembly 8 provided with a linear guide rail pair, a rotating motor 9 and a winch 10, a bottom plate of the excitation device assembly 2 is fixedly connected with the iron floor 1 through bolts and nuts, one end of the sprung mass assembly 6 is connected with a slide block of the linear guide rail pair of the support frame assembly 8 through bolts, the other end of the sprung mass assembly 6 is connected with a suspension control arm and the upper end of a shock absorber through a connecting piece and a control motor 627, the support frame 8 is fixedly connected with the iron floor 1 through bolts, the rotating motor 9 is connected with the lower end of the sprung mass assembly 6 through steel wires, and the winch 10 is connected with the upper end of the sprung mass assembly 6 through rollers of the support frame assembly 8 through steel wires; the data acquisition and control system comprises a first acceleration sensor 3 for measuring the central acceleration of a hub of a suspension test piece, a first displacement sensor 4 for measuring the deformation of a suspension spring, a second acceleration sensor 5 and a second displacement sensor 7 for measuring the acceleration and displacement of a sprung mass component 6, a corner displacement sensor for measuring the displacement of a linear excitation motor 22, a rotating motor 9 and a control motor 627, a force sensor 28 for measuring the pressure exerted by the suspension test piece on an excitation device component 2, a power amplifier, a data acquisition card for acquiring signals of the sensors and outputting electric signals to the power amplifier, a computer connected with the signals of the data acquisition card, and a computer for processing data construction control algorithm and outputting control signals to the data acquisition card.
The linear excitation motor is controlled by speed and angular displacement, and the rotating motor and the control motor are controlled by torque.
Specifically, as shown in fig. 3, the excitation device assembly 2 sequentially comprises a portal frame 21, a linear excitation motor 22, a cylindrical linear guide rail 23, a spring 24, a lower connecting plate 25, a linear guide rail 26, an intermediate connecting plate 27, a force sensor 28, an upper connecting plate 29 and a tire supporting disc 2a from bottom to top, wherein the portal frame 21 is formed by welding an upper supporting plate and a lower bottom plate through uniformly distributed channel steel, the middle part of the lower bottom plate is provided with a threaded hole for installing the linear excitation motor 22, the upper supporting plate is uniformly provided with a threaded hole for installing a bearing of the cylindrical linear guide rail 23 and a through hole for passing an optical axis, and the middle part of the upper supporting plate is provided with a light hole for passing a linear excitation motor shaft; the spring 24 is arranged between the bearing of the cylindrical linear guide rail 23 and the lower connecting plate 25; the periphery of the lower connecting plate 25 is provided with hole sites for installing the optical axis of the cylindrical linear guide rail 23, and the middle part of the lower connecting plate is provided with hole sites for installing the linear guide rail 26; the linear guide rails 26 are symmetrically arranged between the lower connecting plate 25 and the middle connecting plate 27; the lower plate surface of the middle connecting plate 27 is provided with a mounting threaded hole of a linear guide rail 26 sliding block, and the upper plate surface of the middle connecting plate is provided with a mounting hole of the force sensor 28; the force sensor 28 is mounted between the intermediate connection plate 27 and the upper connection plate 29, and the upper connection plate 29 is provided with mounting holes for the force sensor 28 and the tire support disc 2 a. The tire support disc 2a is mounted on the upper connecting plate 29 by bolts.
As shown in fig. 4, the sprung mass assembly 6 includes a base plate 61, the back of the base plate 61 is connected with a slider of a linear guide rail pair of the support frame assembly 8, and an upper support frame assembly 62, a damper upper point mount 63 for connecting a suspension damper, an upper control arm front point mount 64 and an upper control arm rear point mount 65 for connecting a suspension upper control arm, and a tie rod mount 66 for connecting a suspension tie rod, a lower control arm rear point mount 67 and a lower control arm front point mount 68 for connecting a suspension lower control arm are sequentially mounted on the front of the base plate 61 from top to bottom. The upper control arm front point mounting seat 64, the upper control arm rear point mounting seat 65 and the steering tie rod mounting seat 66 are provided with oblong holes, the mounting positions can be adjusted up and down, the control arm rear point mounting seat 67 and the lower control arm front point mounting seat 68 are both composed of a base and a mounting seat, the oblong holes are formed, and the mounting positions can be adjusted up, down, left and right.
As shown in fig. 5, the upper bracket assembly 62 includes an L-shaped bracket 621 provided with rib plates, a first hollow cylinder 622, a second hollow cylinder 623 and a hanging ring 624 are provided on an upper surface of the bracket 621, and a mounting seat 625 and a control motor mounting seat 626 for fixing the control motor 627 are provided at a front portion of the bracket 621. The first hollow cylinder 622 and the second hollow cylinder 623 are mounted on the upper surface of the support bracket 621 by bolts, and the weight of the sprung mass assembly is adjusted by adding a mass above the first hollow cylinder 622 and the second hollow cylinder 623.
As shown in fig. 6, the support frame assembly 8 includes a support frame 81, a support tower 82 fixed on the top end of the support frame 81, a first linear guide rail pair 83, a second linear guide rail pair 84, and an L-shaped fixing block 85, which are usually disposed on the vertical surface of the support frame 81, a top panel of the support frame 81 is provided with a mounting threaded hole of the support frame 82, the vertical surface of which is provided with the linear guide rail pair 83 and the second linear guide rail pair 84 which are subjected to surface smoothing treatment, and is uniformly provided with the guide rails of the first linear guide rail pair 83 and the second linear guide rail pair 84, and the mounting threaded holes of the fixing block 85, a bottom plate of the support frame 82 is uniformly provided with a plurality of mounting holes and reinforcing ribs, front and rear two rollers are mounted on the top of the support frame 82, and guide rails and sliders of the first linear guide rail pair 83 and the second linear guide rail pair 84 are respectively fixedly connected with the support frame 81 and the sprung mass assembly 6 by bolts; the middle part of fixed block 85 is provided with the U-shaped groove that is used for embedding the guide rail, the both sides in U-shaped groove are provided with the slotted hole that is connected with the vertical face that support frame 81 installation linear guide rail is vice, make the fixed block 85 get the mounted position and can carry out the upper and lower adjustment.
The following is an active suspension control algorithm verification test by adopting the 1/4 automobile active suspension test system:
when the test is carried out, the fasteners are installed in the mode, the sprung mass assembly 6 and the suspension system test piece are installed at the ground position, the position of the exciting device assembly 2 is adjusted after the hoister 10 is lifted to a certain height, the tire supporting disc 2a of the exciting device assembly is aligned with the center position of the tire, then the sprung mass assembly 6 and the suspension system test piece are slowly lowered to the stable height position through the hoister 10, and the connection between the hoister 10 and the sprung mass assembly 6 is disconnected; a connecting steel wire rope for installing a rotating motor 9 and a sprung mass assembly 6, a first displacement sensor 4 and a second displacement sensor 7, and a first acceleration sensor 3 and a second acceleration sensor 5; connecting the sensors with the connecting wire of the data acquisition card, the connecting wire of the power amplifier with the data acquisition card and the connecting wire of the computer with the data acquisition card; the computer generates a digital signal to be transmitted to the data acquisition card according to a signal input by the data acquisition card, a linear excitation motor speed and displacement control algorithm, a friction force compensation algorithm for controlling the torque of the rotating motor and an active suspension control algorithm for controlling the torque of the motor, and transmits an electric signal to each motor to be controlled through a power amplifier; the control effect of the active suspension control algorithm is evaluated based on the sprung mass acceleration, suspension travel and tire dynamic load calculated from the signals of the first displacement sensor 4, the second displacement sensor 7, the first acceleration sensor 3 and the second acceleration sensor 5, and the force sensor 28, as shown in fig. 1 and 2.
Example two
The following is a semi-active suspension control algorithm verification test by adopting the 1/4 automobile active suspension test system:
the components and sensors are installed as described in the first embodiment, wherein the control motor 626 is not installed, the magneto-rheological damper or the CDC damper is used for replacing the passive damper of the suspension test piece, and the connecting wire of the control motor 626 and the power amplifier in the first embodiment is connected to the damper interface; replacing the active control algorithm in the first embodiment with a semi-active control algorithm; the control effects of the semi-active suspension control algorithm are evaluated based on the sprung mass acceleration, suspension travel and tire dynamic load calculated from the first displacement sensor 4, the second displacement sensor 7, the first and second acceleration sensors 3 and 5, and the force sensor 28 signals, as shown in fig. 1 and 2.
Example III
The vibration isolation performance test of the passive suspension system is carried out by adopting the 1/4 automobile active suspension test system:
the components and sensors are installed as described in embodiment one, wherein the control motor 626 is not installed; when the linear excitation motor 22 inputs different displacement excitations, the vibration isolation performance of the passive suspension system is evaluated according to the sprung mass acceleration, the suspension dynamic travel and the tire dynamic load calculated by the signals of the first displacement sensor 4, the second displacement sensor 7, the first acceleration sensor 3 and the second acceleration sensor 5 and the force sensor 28, as shown in fig. 1 and 2.
Example IV
The following damping characteristics test of the suspension damper including a common damper, a magneto-rheological damper and a CDC damper is carried out by adopting the 1/4 automobile active suspension test system:
the first embodiment is described in which the control motor 626, the rotating motor 9, the first acceleration sensor 3, the second acceleration sensor 5, and the second displacement sensor are not installed, and the first displacement sensor is installed between the control motor mount 625 and the upper connection plate 29 of the excitation device assembly 2; the suspension test piece is not required to be installed; the upper end of the shock absorber test piece is arranged on the control motor mounting seat 625; after the sprung mass assembly 6 is lifted to a proper height through the winch 10, the position of the exciting device assembly 2 is adjusted, the center of the upper connecting plate 29 of the exciting device assembly is aligned with the mounting point at the lower end of the shock absorber test piece, after the connecting plate is fastened, the sprung mass assembly 6 is slowly lowered, and after the sprung mass assembly 6 is stabilized, the sprung mass assembly 6 is fastened on the supporting frame 81 through the fixing block 85; the damping characteristic curves of the shock absorber are calculated according to the signals of the first displacement sensor 4 and the force sensor 28 under the input of the low-frequency sinusoidal displacement excitation of the linear excitation motor 22, and are shown in fig. 7 and 2.
Example five
The following is a 1/4 automobile active suspension test system:
the vibration damper test piece in the fourth embodiment is replaced by a spring test piece after each component and the sensor are installed as in the fourth embodiment; the force-displacement characteristic curves of the springs are calculated according to the signals of the first displacement sensor 4 and the force sensor 28 under the sine displacement excitation of different frequencies input by the linear excitation motor, and are shown in fig. 7 and 2.
The above examples of the present invention are merely illustrative of the present invention and are not intended to limit the embodiments of the present invention. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the invention are desired to be protected by the following claims.
Claims (6)
1. A1/4 automobile active suspension test system is characterized in that: the test bench comprises a test bench body and a data acquisition and control system, wherein the test bench body comprises an iron floor (1), an excitation device assembly (2) provided with a linear excitation motor (22), a sprung mass assembly (6), a support frame assembly (8) provided with a linear guide rail pair, a rotating motor (9) and a winch (10), a bottom plate of the excitation device assembly (2) is fixedly connected with the iron floor (1) through bolts and nuts, one end of the sprung mass assembly (6) is connected with a sliding block of the linear guide rail pair of the support frame assembly (8) through bolts, the other end of the sprung mass assembly is connected with a suspension control arm and the upper end of a shock absorber through a connecting piece and a control motor (627), the support frame (81) is fixedly connected with the iron floor (1) through bolts, the rotating motor (9) is connected with the lower end of the sprung mass assembly (6) through steel wires, and the winch (10) is connected with the upper end of the sprung mass assembly (6) through rollers of the support frame assembly (8) through steel wires; the data acquisition and control system comprises a first acceleration sensor (3) for measuring the central acceleration of a hub of a suspension test piece, a first displacement sensor (4) for measuring the deformation of a suspension spring, a second acceleration sensor (5) and a second displacement sensor (7) for measuring the acceleration and the displacement of a sprung mass component (6), a corner displacement sensor for measuring the displacement of a linear excitation motor (22), a rotating motor (9) and a control motor (627), a force sensor (28) for measuring the pressure applied by the suspension test piece to an excitation device component (2), a power amplifier, a data acquisition card for acquiring signals of the sensors and outputting electric signals to the power amplifier, and a computer connected with the data acquisition card for processing the data and outputting the control signals to the data acquisition card, wherein the excitation device component (2) sequentially comprises a portal frame (21), a linear excitation motor (22), a cylindrical linear guide rail (23), a spring (24), a lower connecting plate (25), a linear guide rail (26), an intermediate connecting plate (27), an upper connecting plate (29), a tire support disc (2 a), a middle connecting plate (28) and a bottom plate (27) which are uniformly distributed between the upper connecting plate (21) and the lower connecting plate (29) through the upper connecting plate and the lower connecting plate, the middle part of the lower bottom plate is provided with a threaded hole for installing a linear excitation motor (22), threaded holes for installing a bearing of a cylindrical linear guide rail (23) and through holes for passing an optical axis are uniformly distributed in the upper supporting plate, and the middle part of the lower bottom plate is provided with a light hole for passing a linear excitation motor shaft; the spring (24) is arranged between the bearing of the cylindrical linear guide rail (23) and the lower connecting plate (25); the periphery of the lower connecting plate (25) is provided with hole sites for installing the optical axis of the cylindrical linear guide rail (23), and the middle part of the lower connecting plate is provided with hole sites for installing the linear guide rail (26); the linear guide rail (26) is symmetrically arranged between the lower connecting plate (25) and the middle connecting plate (27); the lower plate surface of the middle connecting plate (27) is provided with a mounting threaded hole of a linear guide rail (26) sliding block, and the upper plate surface of the middle connecting plate is provided with a mounting hole of the force sensor (28); the sprung mass assembly (6) comprises a base plate (61), the back surface of the base plate (61) is connected with a sliding block of a linear guide rail pair of a support frame assembly (8), an upper support frame assembly (62), a damper upper point mounting seat (63) for connecting a suspension damper, an upper control arm front point mounting seat (64) for connecting a suspension upper control arm and an upper control arm rear point mounting seat (65), a steering tie rod mounting seat (66) for connecting a suspension steering tie rod, a lower control arm rear point mounting seat (67) for connecting a suspension lower control arm and a lower control arm front point mounting seat (68) are sequentially arranged on the front surface of the base plate (61) from top to bottom, a hollow cylinder (621) is arranged on the upper surface of the support frame assembly (621), a hollow cylinder (622), a second hollow cylinder (623) and a hollow cylinder (625) are arranged on the upper surface of the support frame assembly (62), and a motor mounting seat (627) are arranged on the hollow cylinder mounting seat (625).
2. The 1/4 automotive active suspension test system of claim 1 wherein: the upper control arm front point mounting seat (64), the upper control arm rear point mounting seat (65) and the steering tie rod mounting seat (66) are respectively provided with a slotted hole for adjusting the upper mounting position and the lower mounting position.
3. The 1/4 automotive active suspension test system of claim 1 wherein: the lower control arm front point mounting seat (68) and the lower control arm rear point mounting seat (67) are respectively composed of a base and a mounting seat which are sequentially connected, and oblong holes for adjusting the upper, lower, left and right mounting positions are formed in the base and the mounting seat.
4. The 1/4 automotive active suspension test system of claim 1 wherein: the support frame assembly (8) comprises a support frame (81), a support tower (82) fixed at the top end of the support frame (81), a first linear guide rail pair (83), a second linear guide rail pair (84) and a fixed block (85) which are arranged on the vertical surface of the support frame (81), wherein a support tower (82) installation threaded hole is formed in the top end panel of the support frame (81), the vertical surface of the support frame is subjected to surface smoothing treatment and is uniformly provided with guide rails of the first linear guide rail pair (83) and the second linear guide rail pair (84) and installation threaded holes of the fixed block (85), a plurality of installation holes and reinforcing ribs are uniformly formed in the bottom plate of the support tower (82), front and back rollers are installed at the top of the support tower (82), and guide rails and sliding blocks of the first linear guide rail pair (83) and the second linear guide rail pair (84) are respectively fixedly connected with the support frame (81) and the sprung mass assembly (6) through bolts.
5. The 1/4 automotive active suspension test system of claim 4 wherein: the fixing block (85) is L-shaped, a U-shaped groove used for being embedded into the guide rail is formed in the middle of the fixing block (85), and oblong holes connected with the vertical surface of the support frame (81) mounting linear guide rail pair are formed in two sides of the U-shaped groove.
6. The 1/4 automotive active suspension test system of claim 1 wherein: the linear excitation motor is controlled by speed and angular displacement, and the rotating motor and the control motor are controlled by torque.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810205291.6A CN108225800B (en) | 2018-03-13 | 2018-03-13 | 1/4 automobile active suspension test system |
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| CN201810205291.6A CN108225800B (en) | 2018-03-13 | 2018-03-13 | 1/4 automobile active suspension test system |
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| CN108225800A CN108225800A (en) | 2018-06-29 |
| CN108225800B true CN108225800B (en) | 2023-05-23 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109489997A (en) * | 2018-12-21 | 2019-03-19 | 江苏科技大学 | A kind of automobile suspension system multifunctional testing platform and its test method |
| CN111337275B (en) * | 2020-02-25 | 2022-03-22 | 威马智慧出行科技（上海）有限公司 | Vehicle-mounted suspension positioning error detection method and device, storage medium and electronic equipment |
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| CN113465950B (en) * | 2021-07-23 | 2022-08-26 | 清华大学 | Vehicle suspension rack |
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