CN213456108U

CN213456108U - Electric power steering control research device

Info

Publication number: CN213456108U
Application number: CN202022718088.4U
Authority: CN
Inventors: 罗映; 王淑超; 罗全巧; 朱杰
Original assignee: Shandong Netlink Intelligent Vehicle Industry Technology Research Institute Co ltd; Shandong Promote Electromechanical Technology Co ltd
Current assignee: Shandong Netlink Intelligent Vehicle Industry Technology Research Institute Co ltd; Shandong Promote Electromechanical Technology Co ltd
Priority date: 2020-11-20
Filing date: 2020-11-20
Publication date: 2021-06-15
Anticipated expiration: 2030-11-20

Abstract

An electric power steering control research device is used for conveniently researching electric power steering. The steering mechanism comprises a rack, an operation panel arranged above the rack, a steering wheel rotatably arranged on the operation panel, a pair of wheels arranged on the rack, and a steering mechanism arranged between the steering wheel and the wheels, wherein a frame plate is fixed on the upper part of the rack, an experiment box is placed on the frame plate, a torque sensor, a steering wheel corner sensor and a power-assisted motor are arranged in the experiment box, the torque sensor and the steering wheel corner sensor are connected with the steering mechanism, and a clutch is arranged between the power-assisted motor and the steering mechanism. The utility model provides an electric power steering control research device makes things convenient for research study personnel to electric power steering's research, and convenient operation is simple.

Description

Electric power steering control research device

Technical Field

The utility model belongs to the technical field of the electric power steering technique and specifically relates to an electric power steering control research device.

Background

An Electric Power Steering (EPS) system is a Power Steering system that directly relies on an Electric motor to provide an assist torque, and has many advantages over a conventional hps (hydraulic Power Steering) system. The EPS is mainly composed of a torque sensor, a vehicle speed sensor, a motor, a reduction mechanism, an Electronic Control Unit (ECU), and the like.

An electric power steering system is the development direction of an automobile steering system. The system directly provides steering power by the electric power-assisted machine, saves a power steering oil pump, a hose, hydraulic oil, a conveyor belt and a belt pulley arranged on an engine which are necessary for a hydraulic power steering system, saves energy and protects the environment. In addition, the steering assisting device has the characteristics of simple adjustment, flexible assembly and capability of providing steering assisting power under various conditions. With these advantages, electric power steering as a new steering technology will challenge hydraulic steering systems, well known to the public, which have a history of over 50 years.

The EPS system can be divided into 3 types of steering shaft power-assisted type, gear power-assisted type and rack power-assisted type according to different installation positions of the power-assisted motors. The motor of the steering shaft power-assisted EPS is fixed on one side of the steering shaft, is connected with the steering shaft through a speed reducing mechanism and directly drives the steering shaft to perform power-assisted steering. The electric motor and the reduction mechanism of the gear-assisted EPS are connected with the pinion gear, and the gear-assisted steering is directly driven. The rack-assisted EPS has a motor and a reduction gear that directly drive the rack to provide assistance.

When a driver steers a steering wheel, a torque sensor detects the steering of the steering wheel and the magnitude of torque, voltage signals are transmitted to an electronic control unit, and the electronic control unit sends commands to a motor controller according to the torque voltage signals, the rotating direction, a vehicle speed signal and the like detected by the torque sensor, so that the motor outputs steering power-assisted torque with corresponding magnitude and direction, and auxiliary power is generated. When the automobile does not turn, the electronic control unit does not send an instruction to the motor controller, and the motor does not work.

In order to facilitate the study of electric power steering, an electric power steering control research device is urgently needed.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an electric power steering control research device for the research of convenience to electric power steering.

The utility model provides a technical scheme that its technical problem adopted is: electric power steering control research device, characterized by, it includes the frame, the operating panel of setting in the frame top, the steering wheel of rotating installation on operating panel, a pair of directive wheel of setting in the frame bottom, the steering mechanism of setting between steering wheel and wheel, be fixed with the frame plate at frame upper portion, experimental box has been placed on the frame plate, be equipped with torque sensor in the experimental box, steering wheel corner sensor and helping hand motor, torque sensor, steering wheel corner sensor are connected with steering mechanism, be equipped with the clutch between helping hand motor and the steering mechanism.

Furthermore, a screw rod is rotatably arranged on the power supply module, the ECU module, the driving module and the sensor module, a pressing block is fixed at the top of the screw rod, a baffle is fixed at the upper part of the screw rod, and the upper side walls of the power supply module, the ECU module, the driving module and the sensor module are all arranged between the pressing block and the baffle; a threaded sleeve in threaded connection with the screw is arranged in the box body.

Furthermore, a wire slot is arranged in the experiment box, and a wire bundle is placed in the wire slot; the wire bundle comprises a plurality of wires, and the middle parts of the plurality of wires are fixed together through wire hoops.

Furthermore, an end cap is arranged on the wire hoop, and a fixing column is arranged in the wire groove and is used for being connected with the end cap in an inserting mode.

Further, the end cap is a rubber member.

Further, both ends of the wire are helical.

Furthermore, the device also comprises a travelling mechanism which is arranged at the lower part of the frame.

Furthermore, the travelling mechanism comprises a shell fixed on the rack, a wheel carrier, travelling wheels and a handle, wherein the wheel carrier is connected with the lower part of the rack and the shell in a vertical sliding manner; when one part of the travelling wheel is arranged below the rack, the travelling wheel can drive the rack to travel; the handle is rotated to enable the wheel carrier to move upwards until the lowest point of the walking wheel is located in the lower surface of the rack, and at the moment, the rack is fixed relative to the ground.

The utility model has the advantages that: the utility model provides an electric power steering control research device, the convenient research study to electric power steering system, observation steering system's that can be clear mechanical structure and the connection condition are equipped with the electrical control test case simultaneously, and steering system's automatically controlled scene in the simulation car that can be true conveniently studies the electric control principle and the wiring condition among the study steering system. The device is convenient and simple to operate, and researchers can conveniently improve the device on the basis of the device, so that researches on the aspects of improving the performance of the steering system and the like can be carried out by utilizing the device.

Drawings

Fig. 1 is a schematic front view of the present invention;

FIG. 2 is a schematic diagram of the structure of the present invention;

FIG. 3 is a front view of the experimental box;

FIG. 4 is a schematic view of the internal structure of the case;

FIG. 5 is a top view of the housing;

FIG. 6 is a cross-sectional view of a power module;

FIG. 7 is a schematic view of a wire harness;

FIG. 8 is a bottom view of the case cover;

FIG. 9 is a schematic view of a lead;

FIG. 10 is a schematic view of the position of the fixing post;

FIG. 11 is a schematic view of the assembled wire harness and ferrule;

fig. 12 is a schematic view of the bottom of the present invention with a traveling mechanism;

FIG. 13 is a schematic view of a travel mechanism;

in the figure: the device comprises a frame 1, a frame plate 11, a steering wheel 2, a steering mechanism 3, a rack-and-pinion steering gear 31, a speed reducing mechanism 32, a clutch 33, a steering wheel 4, an operation panel 5, a test box 6, a box 61, a wire groove 611, a thread sleeve 612, a fixed column 613, a box cover 62, a locking buckle 621, a display screen 622, an identification area 623, a power module 63, a voltage adjusting button 631, an ignition switch 632, an ECU 64 module 65, a driving module 651, a speed adjusting button 652, a vehicle speed adjusting button 66, a sensor 661, a torque sensor 662, a booster motor 663, a steering wheel angle sensor 67, a pressing block 67, a screw 671, a screen 672, a 68 wire, a 681 wire hoop, an end cap 682, a shell 7, a wheel carrier 71, a traveling wheel 72, a handle 73 and a 74.

Detailed Description

As shown in fig. 1 to 13, the present invention mainly includes a frame 1, a wheel 2, a steering mechanism 3, a steering wheel 4, an operation panel 5 and an experimental box 6, and the present invention will be described in detail with reference to the accompanying drawings.

As shown in fig. 1, the frame 1 is a basic component of the present invention, and the frame is fixed by welding or bolting a section bar. An operation panel 5 is fixed at the top of the rack, a pair of steering wheels is arranged at the bottom of the rack, a vehicle speed sensor is arranged on a wheel shaft of the steering wheel, a pair of angle detectors which are arranged left and right are arranged on the rack, the steering wheels 2 are connected with the angle detectors, and the steering angles of the wheels can be detected through the angle detectors when the steering wheels steer. A steering wheel 4 is rotatably mounted on the operation panel, a steering mechanism 3 is arranged between the steering wheel and the steering wheels, and when the steering wheel is rotated, the steering wheels can be driven to steer through the steering mechanism. The steering mechanism comprises a rotating shaft, a torque sensor 661 arranged at the upper end of the rotating shaft, a speed reducing mechanism 32 and a steering wheel corner sensor 663 arranged at the middle part of the rotating shaft, and a rack and pinion steering gear 31 arranged between the lower part of the rotating shaft and the wheels, wherein the steering wheel is fixedly connected with the rotating shaft, the rotating shaft can be driven to rotate when the steering wheel is rotated, and then the steering of the steering wheels is driven through the rack and pinion steering gear. The assist motor 662 is connected to the reduction mechanism 32 through the clutch 33. Therefore, the power-assisted motor and the speed reducing mechanism can drive the rotating shaft to rotate, and further electric power-assisted steering is realized. The steering mechanism is prior art and is not described in detail.

The right end of the rack is provided with a frame plate 11, the frame plate is provided with an experiment box 6, the experiment box is in signal connection with a torque sensor, the experiment box is in signal connection with a clutch, the experiment box is in signal connection with a power-assisted motor, and a vehicle speed sensor on a wheel is in signal connection with the experiment box.

As shown in fig. 3 to 11, the experimental box includes a box body 61, a box cover 62, a power module 63, an ECU module 64 and a driving module 65, as shown in fig. 1, the box body 61 is a rectangular parallelepiped hollow structure with an open top, and a wire slot 611 is provided at the left end of the box body, and is provided to facilitate the placement of a wire harness. As shown in fig. 5, a plurality of threaded sleeves 612 are fixed at the bottom of the box body, and are arranged to facilitate installation of the power module, the ECU module and the driving module.

As shown in fig. 8, the box cover 62 has a rectangular parallelepiped structure, a display 622 is disposed on the inner side of the box cover, and identification areas 623 are disposed on the left and right sides of the display, and are used for pasting circuit diagrams and the like, so as to be convenient for study and study personnel to refer to. The front side wall of the box cover is provided with a locking buckle 621, and the box body and the box cover are locked and fixed through the locking buckle.

The front part of the inner cavity of the box body is provided with a power supply module 63, the power supply module is provided with a voltage adjusting button 631 and an ignition switch 632, and the power supply module is used for providing electric energy for the whole experiment box. An ECU (electronic control unit, also called a traveling computer) module 64 is arranged at the rear side of the power module, a driving module 65 is arranged at the left side of the power module, a rotating speed adjusting button 651 and a vehicle speed adjusting button 652 are arranged on the driving module, the rotating speed of the power-assisted motor is adjusted through the rotating speed adjusting button, and the vehicle speed adjusting button is used for simulating and adjusting the vehicle speed. A sensor module 66 is arranged on the left side of the ECU module and the rear side of the driving module, a torque sensor 661, a booster motor 662 and a steering wheel angle sensor 663 are arranged on the sensor module, and the torque sensor 661, the booster motor 662 and the steering wheel angle sensor 663 are connected with corresponding sockets on the driving module. The power module, the ECU module, the driving module and the sensor module are enclosed to form a rectangular structure, the power module, the ECU module, the driving module and the sensor module are all of the rectangular structure, and the power module, the ECU module and the driving module are provided with sockets for the plug-in connection of electrical elements.

In order to realize the fixed connection between the power module, the ECU module, the driving module and the sensor module and the box body, press blocks 67 are arranged between the power module and the box body, between the ECU module and the box body, between the driving module and the box body and between the sensor module and the box body. As shown in fig. 6, the pressing block is of a cylindrical structure, a screw 671 is fixed at the bottom of the pressing block, a baffle 672 is fixed on the screw, the upper part of the screw is rotatably connected with the upper side wall of the power module, the upper side wall of the power module is arranged between the baffle and the pressing block, when the power module is used, the screw on the power module is aligned with the threaded sleeve 612 inside the box body, then the pressing block is rotated to screw the screw into the threaded sleeve, and at the moment, the fixed connection between the power module and the box body is realized. Similarly, the pressing block can realize the fixed connection between the ECU module and the box body, between the driving module and the box body and between the sensor module and the box body.

As shown in fig. 7, the wire bundle includes a plurality of wires 68 and a wire hoop 681 bundling the wires together, and the plurality of wires in each wire bundle may have equal lengths or different lengths. When the lengths of the plurality of wires of the wire bundle are equal, different numbers may be marked on the respective wires of the wire bundle to show distinction. The two ends of the lead are joints, so that the lead can be conveniently connected with sockets on the power supply module, the ECU module or the driving module. In order to meet the length requirement of the wire during wiring and prevent the wire from being too long, as shown in fig. 9, the two ends of the wire are spiral, and the wire can be stretched at the moment. After the release, the wire can resume the original shape again.

As shown in fig. 7, in order to facilitate fixing of the wire bundle, an end cap 682 is fixed on a ferrule of the wire bundle, as shown in fig. 10, a plurality of fixing posts 613 are arranged in the wire slot at equal intervals, as shown in fig. 11, the fixing of the wire bundle can be realized after the upper portions of the fixing posts extend into the end cap, so that the wire bundle can be arranged in the wire slot side by side, and then the wire bundle is convenient to arrange and take. The end cap is a rubber piece, so that the end cap is conveniently connected with the fixed column in an inserting manner.

As shown in fig. 12, in order to facilitate the overall movement, a traveling mechanism is provided on the frame, and as shown in fig. 12 and 13, the traveling mechanism includes a housing 7 fixed on the frame, a wheel carrier 71 vertically slidably connected to both the lower portion of the frame and the housing, a traveling wheel 72 rotatably mounted on the lower portion of the wheel carrier, and a handle 73 rotatably connected to the housing through a bearing 74, and a lead screw threadedly engaged with the wheel carrier is fixed to the lower portion of the handle. When a part of the travelling wheel is arranged below the frame, the travelling wheel can drive the frame to travel. The handle is rotated to enable the wheel carrier to move upwards until the lowest point of the walking wheel is located in the lower surface of the rack, at the moment, the rack is placed on the ground, and the rack is fixed relative to the ground.

The utility model discloses, convenient research study personnel are to electric power assisted steering's experimental study, convenient operation is simple. The connection of mechanical components such as a steering wheel, a steering mechanism, steering wheels, a torque sensor, a steering wheel angle sensor and the like on the rack is carried out according to a steering structure and corresponding components in the existing vehicle, and the mechanical components are a group of vehicle mechanical steering systems which are independently arranged; the experiment box is internally provided with a plurality of sensors, a power-assisted motor, various speed adjusting buttons and the like, is a group of vehicle steering electric control systems which are independently arranged, and can manually operate the sensors through the experiment box, for example, the sensors are rotated, and the like, so that the change of sensing signals of the sensors is realized; the steering speed of the power-assisted motor can be adjusted, the running speed of the vehicle can be adjusted in a simulated mode and the like through the speed adjusting button, and therefore data change in an electric control steering system in running can be simulated through the experimental box. Meanwhile, the experimental box is provided with an external interface, and signals of external sensors such as a torque sensor and a steering wheel angle sensor on the rack can be directly acquired through the external interface, so that the external signals can be conveniently displayed, simulated and analyzed.

Claims

1. Electric power steering control research device, characterized by, it includes the frame, the operating panel of setting in the frame top, the steering wheel of rotating installation on operating panel, a pair of directive wheel of setting in the frame bottom, the steering mechanism of setting between steering wheel and wheel, be fixed with the frame plate at frame upper portion, experimental box has been placed on the frame plate, be equipped with torque sensor in the experimental box, steering wheel corner sensor and helping hand motor, torque sensor, steering wheel corner sensor are connected with steering mechanism, be equipped with the clutch between helping hand motor and the steering mechanism.

2. The electric power steering control research device of claim 1, wherein a screw is rotatably mounted on the power module, the ECU module, the driving module and the sensor module, a pressing block is fixed on the top of the screw, a baffle is fixed on the upper part of the screw, and the upper side walls of the power module, the ECU module, the driving module and the sensor module are all arranged between the pressing block and the baffle; a threaded sleeve in threaded connection with the screw is arranged in the box body.

3. The electric power steering control research device of claim 1, wherein a wire slot is provided in the experimental box, and a wire bundle is placed in the wire slot; the wire bundle comprises a plurality of wires, and the middle parts of the plurality of wires are fixed together through wire hoops.

4. The electric power steering control research device of claim 3, wherein the wire loop is provided with an end cap, and the wire groove is provided with a fixing post for being connected with the end cap in an inserting manner.

5. The electric power steering control research device of claim 1, wherein the end cap is a rubber member.

6. The electric power steering control research device of claim 1, wherein both ends of the wire are helical.

7. The electric power steering control research device of claim 1, further comprising a traveling mechanism disposed at a lower portion of the frame.

8. The electric power steering control research device of claim 7, wherein the traveling mechanism comprises a housing fixed on the frame, a wheel carrier connected with the lower part of the frame and the housing in a vertical sliding manner, a traveling wheel rotatably mounted on the lower part of the wheel carrier, and a handle rotatably connected with the housing through a bearing, wherein a lead screw in threaded fit with the wheel carrier is fixed on the lower part of the handle; when one part of the travelling wheel is arranged below the rack, the travelling wheel can drive the rack to travel; the handle is rotated to enable the wheel carrier to move upwards until the lowest point of the walking wheel is located in the lower surface of the rack, and at the moment, the rack is fixed relative to the ground.