Electric drive wheel speed simulation device

Abstract

The utility model discloses an electric drive wheel speed simulation device, comprising a support comprising a bottom plate and a vertical mounting plate formed on the bottom plate; the handle is formed on one side of the upper part of the vertical mounting plate; the wheel speed simulation unit is mounted on the vertical mounting plate and comprises a servo motor mounted on the vertical mounting plate on the same side as the handle, an output shaft of the servo motor penetrates through the vertical mounting plate and is connected with a magnetic ring mounting plate on the other side of the vertical mounting plate, and the servo motor can drive the magnetic ring mounting plate to rotate; the side wall of the magnetic ring mounting plate is sleeved with the magnetic ring; the wheel speed sensor bracket is mounted around the driving magnetic ring mounting plate; and the wheel speed sensor is fixed on the wheel speed sensor bracket. The device is suitable for various types of wheel speed sensors, is simple in structure, is convenient to install and carry, and can rapidly and truly simulate the rotation of wheels.

Description

Technical Field

[0001] The utility model relates to the field of automobiles, in particular to an electric drive wheel speed simulation device used for HIL (hardware in the loop) simulation test of a braking system. Background Art

[0002] The electric braking system and body stability control system are the key to the electrification and intelligence of the vehicle chassis. When developing and testing the braking system function, the wheel speed signal is the basic condition for function development. The HIL simulation bench does not have a real wheel speed system and needs to send signals to the object under test through an external simulation device. Therefore, it is necessary to develop a test device that can simulate the actual wheel speed to provide it to the test system.

[0003] One existing wheel speed simulation device uses a motor to drive the tire and obtains the wheel speed through a sensor to collect the tire rotation signal. The solution of using tire rotation to simulate the vehicle wheel speed is bloated and complex, relatively bulky, and not conducive to space layout and portable testing. Another existing wheel speed simulation device simply uses a wheel speed simulation board to send wheel speed signals, and cannot be connected to a real wheel speed sensor, which weakens the simulation authenticity.

[0004] Therefore, there is an urgent need for a simple, portable, high-precision wheel speed simulation device to meet the needs of simulating wheel speed in HIL simulation tests. Utility Model Content

[0005] A series of simplified concepts are introduced in the utility model content section, which are all simplifications of the prior art in the field, which will be further described in detail in the specific implementation section. The utility model content section of the utility model does not mean to attempt to define the key features and necessary technical features of the technical solution claimed for protection, nor does it mean to attempt to determine the scope of protection of the technical solution claimed for protection.

[0006] The technical problem to be solved by the utility model is to provide an electrically driven wheel speed simulation device which is applicable to various types of wheel speed sensors, has a simple structure, is convenient for sensor installation and transportation, and can rapidly and truly simulate wheel rotation.

[0007] In order to solve the above technical problems, the utility model provides an electric drive wheel speed simulation device, comprising:

[0008] A bracket, comprising a base plate 3.1 and a vertical mounting plate 3.2 formed on the base plate 3.1;

[0009] A handle 1 is formed on one side of the upper portion of the vertical mounting plate 3.2;

[0010] The wheel speed simulation unit, mounted on the vertical mounting plate 3.2, comprises:

[0011] The servo motor 2 is mounted on the vertical mounting plate 3.2 on the same side of the handle 1, and its output shaft passes through the vertical mounting plate 3.2 and is connected to the magnetic ring mounting plate 7 on the other side of the vertical mounting plate 3.2, so as to drive the magnetic ring mounting plate 7 to rotate;

[0012] The magnetic ring 6 is mounted on the side wall of the magnetic ring mounting plate 7. The servo motor 2 drives the magnetic ring mounting plate 7 to rotate, thereby rotating the magnetic ring 6. As the rotation speed changes, the magnetic field changes and is collected by the wheel speed sensor to obtain the wheel speed.

[0013] A wheel speed sensor bracket 4, which is mounted around the driving magnetic ring mounting plate 7;

[0014] The wheel speed sensor 5 is fixed on the wheel speed sensor bracket 4.

[0015] Preferably, the electrically driven wheel speed simulation device is further improved, and the wheel speed sensor bracket 4 is formed as an L-shaped bracket;

[0016] The long side of the L-shaped bracket is vertically fixed on the vertical mounting plate 3.2 close to the magnetic ring mounting plate 7;

[0017] The short side of the L-shaped bracket is parallel to the surface of the magnetic ring mounting plate 7, and there is an overlapping area between the short side of the L-shaped bracket and the surface of the magnetic ring mounting plate 7;

[0018] A slot is formed on the short side of the L-shaped bracket, and the slot is used to fix the wheel speed sensor 5 connecting bolt.

[0019] Preferably, the electrically driven wheel speed simulation device is further improved, and the number of wheel speed sensor brackets 4 is two;

[0020] The slotted hole on one wheel speed sensor bracket 4 is parallel to the bottom plate 3.1, and the slotted hole on the other wheel speed sensor bracket 4 is perpendicular to the bottom plate 3.1;

[0021] Two wheel speed sensors 5 are respectively installed in the above-mentioned slots, one wheel speed sensor 5 is arranged in a direction parallel to the bottom plate 3.1, and the other wheel speed sensor 5 is arranged in a direction perpendicular to the bottom plate 3.1.

[0022] Preferably, the electrically driven wheel speed simulation device is further improved, and the number of wheel speed sensor brackets 4 is eight;

[0023] The wheel speed sensor bracket 4 is evenly distributed around the driving magnetic ring mounting plate 7.

[0024] Preferably, the electrically driven wheel speed simulation device is further improved to form a plurality of wheel speed simulation units which are horizontally arranged at equal intervals on the vertical mounting plate 3.2.

[0025] Preferably, the electrically driven wheel speed simulation device is further improved so that each wheel speed simulation unit is arranged on the same side of the vertical mounting plate 3.2.

[0026] Preferably, the electrically driven wheel speed simulation device is further improved, and the wheel speed simulation units are alternately arranged on both sides of the vertical mounting plate 3.2.

[0027] Preferably, the electrically driven wheel speed simulation device is further improved, and each wheel speed sensor 5 is connected to the CAN bus network via a standard DB9 connector.

[0028] The utility model is used in the research and development stage to test and verify, for example, anti-lock braking systems ABS, traction control systems TCS, electronic body stability control systems ESC, etc. By simulating different wheel speeds, the performance of these systems can be tested in a laboratory environment without having to be tested on actual roads.

[0029] The electric drive wheel speed simulation device of the utility model can simulate various fault conditions, such as tire slippage, sudden loss of traction of the tire, etc., by driving the magnetic ring through a motor, and has wide applicability.

[0030] When developing new vehicle control algorithms or hardware, the electric drive wheel speed simulation device of the utility model can provide a simulation environment for developers to simulate various driving conditions;

[0031] The electric drive wheel speed simulation device of the utility model has small size and light weight, is easy to move and carry, is not restricted by the test space, is easy to arrange and install, and can quickly build a test environment.

[0032] The wheel speed simulation device of the utility model controls the transmission of wheel speed sensor signals through a CAN network, has good anti-interference and compatibility, and is used in an HIL simulation test bench environment of an electronically controlled brake system to perform various experiments and tests. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The drawings of the present utility model are intended to illustrate the general characteristics of the methods, structures and / or materials used in specific exemplary embodiments of the present utility model, and to supplement the description in the specification. However, the drawings of the present utility model are schematic diagrams not drawn to scale, and thus may not accurately reflect the precise structure or performance characteristics of any given embodiment. The drawings of the present utility model should not be interpreted as limiting or restricting the range of values ​​or properties covered by the exemplary embodiments of the present utility model. The present utility model is further described in detail below in conjunction with the drawings and specific embodiments:

[0034] Figure 1 It is a schematic diagram of the structure of the utility model.

[0035] Description of Reference Numerals

[0036] Handle 1

[0037] Baseplate 3.1

[0038] Vertical mounting plate 3.2

[0039] Wheel speed sensor bracket 4

[0040] Wheel speed sensor 5

[0041] Magnetic ring 6

[0042] Magnetic ring mounting plate 7. DETAILED DESCRIPTION

[0043] The following is an explanation of the implementation of the utility model by specific specific embodiments, and those skilled in the art can fully understand the other advantages and technical effects of the utility model from the content disclosed in this specification. The utility model can also be implemented or applied through different specific embodiments, and the details in this specification can also be applied based on different viewpoints, and various modifications or changes can be made without deviating from the general design concept of the utility model. It should be noted that, in the absence of conflict, the following embodiments and the features in the embodiments can be combined with each other. The following exemplary embodiments of the utility model can be implemented in a variety of different forms and should not be interpreted as being limited to the specific embodiments described here. It should be understood that these embodiments are provided to make the disclosure of the utility model thorough and complete, and to fully convey the technical solutions of these exemplary specific embodiments to those skilled in the art. It should be understood that when an element is referred to as "connected" or "coupled" to another element, the element can be directly connected or coupled to another element, or there can be an intermediate element. The difference is that when an element is referred to as "directly connected" or "directly coupled" to another element, there is no intermediate element. In all the drawings, the same reference numerals always represent the same element. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0044] Example

[0045] refer to Figure 1 As shown, the electric drive wheel speed simulation device provided by the utility model comprises:

[0046] A bracket, comprising a base plate 3.1 and a vertical mounting plate 3.2 formed on the base plate 3.1;

[0047] A handle 1 is formed on one side of the upper portion of the vertical mounting plate 3.2;

[0048] The wheel speed simulation unit, mounted on the vertical mounting plate 3.2, comprises:

[0049] The servo motor 2 is powered by a 220V AC power supply and is installed on the vertical mounting plate 3.2 on the same side of the handle 1 (referring to the installation method when there is only one wheel speed simulation unit, and there is no such restriction when there are multiple wheel speed simulation units alternately installed on both sides of the vertical mounting plate 3.2). Its output shaft passes through the vertical mounting plate 3.2 and is connected to the magnetic ring mounting plate 7 on the other side of the vertical mounting plate 3.2, and it can drive the magnetic ring mounting plate 7 to rotate;

[0050] The magnetic ring 6 is mounted on the side wall of the magnetic ring mounting plate 7. The servo motor 2 drives the magnetic ring mounting plate 7 to rotate, thereby causing the magnetic ring 6 to rotate to simulate different wheel speeds and wheel rotation conditions;

[0051] A wheel speed sensor bracket 4, which is mounted around the driving magnetic ring mounting plate 7;

[0052] The wheel speed sensor 5 is fixed on the wheel speed sensor bracket 4.

[0053] Preferably, the wheel speed sensor bracket 4 is formed as an L-shaped bracket;

[0054] The long side of the L-shaped bracket is vertically fixed on the vertical mounting plate 3.2 close to the magnetic ring mounting plate 7;

[0055] The short side of the L-shaped bracket is parallel to the surface of the magnetic ring mounting plate 7, and there is an overlapping area between the short side of the L-shaped bracket and the surface of the magnetic ring mounting plate 7;

[0056] A slot is formed on the short side of the L-shaped bracket, and the slot is used to fix the wheel speed sensor 5 connecting bolt.

[0057] Optionally, the above embodiment is further improved, the number of wheel speed sensor brackets 4 is two;

[0058] The slotted hole on one wheel speed sensor bracket 4 is parallel to the bottom plate 3.1, and the slotted hole on the other wheel speed sensor bracket 4 is perpendicular to the bottom plate 3.1;

[0059] Two wheel speed sensors 5 are respectively installed in the above-mentioned slots, one wheel speed sensor 5 is arranged in a direction parallel to the bottom plate 3.1, and the other wheel speed sensor 5 is arranged in a direction perpendicular to the bottom plate 3.1.

[0060] Optionally, the above embodiment is further improved, the number of wheel speed sensor brackets 4 is eight;

[0061] The wheel speed sensor bracket 4 is evenly distributed around the driving magnetic ring mounting plate 7.

[0062] Optionally, the above embodiment is further improved to form a plurality of wheel speed simulation units arranged horizontally and equidistantly on the vertical mounting plate 3.2, and each wheel speed simulation unit is arranged on the same side of the vertical mounting plate 3.2.

[0063] Optionally, the above embodiment is further improved to form a plurality of wheel speed simulation units arranged horizontally and evenly spaced on the vertical mounting plate 3.2, and the wheel speed simulation units are alternately arranged on both sides of the vertical mounting plate 3.2.

[0064] Wherein, each wheel speed sensor 5 in the above solutions is connected to the CAN bus network via a standard DB9 connector.

[0065] Unless otherwise defined, all terms (including technical terms and scientific terms) used herein have the same meaning as those commonly understood by those skilled in the art to which the present invention belongs. It will also be understood that, unless explicitly defined herein, terms such as those defined in general dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant field, and not interpreted in an ideal or overly formal sense.

[0066] The present invention is described in detail above through specific implementation methods and examples, but these do not constitute limitations of the present invention. Without departing from the principle of the present invention, those skilled in the art may make many modifications and improvements, which should also be considered as the protection scope of the present invention.

Claims

1. An electric drive wheel speed simulation device, characterized in that: include: A bracket, comprising a base plate (3.1) and a vertical mounting plate (3.2) formed on the base plate (3.1); A handle (1) formed on one side of the upper portion of the vertical mounting plate (3.2); The wheel speed simulation unit, mounted on the vertical mounting plate (3.2), comprises: A servo motor (2) is mounted on a vertical mounting plate (3.2) on the same side of the handle (1), and its output shaft passes through the vertical mounting plate (3.2) and is connected to a magnetic ring mounting plate (7) on the other side of the vertical mounting plate (3.2), so as to drive the magnetic ring mounting plate (7) to rotate; A magnetic ring (6) which is sleeved on the side wall of a magnetic ring mounting plate (7); A wheel speed sensor bracket (4) mounted around the driving magnetic ring mounting plate (7); The wheel speed sensor (5) is fixed on the wheel speed sensor bracket (4).

2. The electrically driven wheel speed simulation device according to claim 1, characterized in that: The wheel speed sensor bracket (4) is formed as an L-shaped bracket; The long side of the L-shaped bracket is vertically fixed on the vertical mounting plate (3.2) close to the magnetic ring mounting plate (7); The short side of the L-shaped bracket is parallel to the surface of the magnetic ring mounting plate (7), and there is an overlapping area between the short side of the L-shaped bracket and the surface of the magnetic ring mounting plate (7); A slot hole is formed on the short side of the L-shaped bracket, and the slot hole is used to fix the wheel speed sensor (5) connecting bolt.

3. The electrically driven wheel speed simulation device according to claim 2, characterized in that: The number of wheel speed sensor brackets (4) is two; The slotted hole on one wheel speed sensor bracket (4) is parallel to the bottom plate (3.1), and the slotted hole on the other wheel speed sensor bracket (4) is perpendicular to the bottom plate (3.1); Two wheel speed sensors (5) are respectively installed in the slots, one wheel speed sensor (5) is arranged in a direction parallel to the bottom plate (3.1), and the other wheel speed sensor (5) is arranged in a direction perpendicular to the bottom plate (3.1).

4. The electrically driven wheel speed simulation device according to claim 2, characterized in that: The number of wheel speed sensor brackets (4) is eight; The wheel speed sensor bracket (4) is evenly distributed around the driving magnetic ring mounting plate (7).

5. The electrically driven wheel speed simulation device according to claim 1, characterized in that: A plurality of wheel speed simulation units are arranged horizontally and evenly spaced on a vertical mounting plate (3.2).

6. The electrically driven wheel speed simulation device according to claim 5, characterized in that: Each wheel speed simulation unit is arranged on the same side of the vertical mounting plate (3.2).

7. The electrically driven wheel speed simulation device according to claim 5, characterized in that: The wheel speed simulation units are arranged alternately on both sides of the vertical mounting plate (3.2).

8. The electrically driven wheel speed simulation device according to any one of claims 1 to 7, characterized in that: Each wheel speed sensor (5) is connected to the CAN bus network via a standard DB9 connector.

Images