CN215298024U - ECU assembly online test system - Google Patents
ECU assembly online test system Download PDFInfo
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- CN215298024U CN215298024U CN202121435862.9U CN202121435862U CN215298024U CN 215298024 U CN215298024 U CN 215298024U CN 202121435862 U CN202121435862 U CN 202121435862U CN 215298024 U CN215298024 U CN 215298024U
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Abstract
The utility model discloses an ECU assembly online test system, which comprises a control mechanism and a main support, wherein an execution mechanism and a loading mechanism are arranged in the main support; an executing mechanism: locking, remove the ECU assembly, load mechanism: simulating the actual operation process of the ECU assembly, and controlling the mechanism: and carrying out data acquisition and control on the ECU assembly. The control mechanism comprises an upper computer, a programmable power supply and a signal conditioning unit, wherein the upper computer controls the programmable power supply, the output of the programmable power supply is connected with the signal conditioning unit, and the upper computer controls the signal conditioning unit to acquire and control data of the ECU assembly. By testing the ECU assembly before the iBooster assembly is assembled in the ECU assembly testing system, the problem that the iBooster assembly is reworked due to the failure of the ECU assembly can be effectively avoided. The testing system is reliably connected with the output shaft of the motor of the ECU assembly through the hysteresis brake, the torque rotating speed sensor, the load connecting cylinder and the floating plate of the upper needle bed. The upper needle bed and the product carrier are replaceable and can be adapted to ECU assemblies of different models.
Description
Technical Field
The utility model relates to a motor testing arrangement field especially relates to an ECU assembly on-line testing system.
Background
In order to protect environment, save energy, intelligence and safety, new energy automobiles and automatic driving technologies are continuously emerging, and higher requirements are placed on a chassis electric control system, so that a brake-by-wire product is produced at the right moment. Such as the iboochester electromechanical servo-assistance mechanism of bosch. After a brake pedal is stepped on by a traditional fuel vehicle, the pedal can push a vacuum booster pump, and then the vacuum booster pump pushes a brake main cylinder to generate brake hydraulic pressure to control calipers to brake; the iBooster system eliminates a vacuum booster pump, integrates various sensors and controllers, and has smaller integral volume, convenient installation and space and weight saving. When the brake force-changing device is used, a sensor can transmit a stroke signal for stepping on a brake to an electronic control unit ECU of the iBooster, the electronic control unit ECU can calculate how much torque the direct-current brushless motor of the iBooster should output according to the signal, the torque can act on a set of gear mechanism, the torque is converted into brake force of a brake main cylinder through the gear mechanism, brake hydraulic pressure is changed through the brake force, and finally the brake calipers are controlled to brake. The IBooster mainly comprises an electronic control unit, a direct current brushless motor, a power-assisted transmission mechanism, a push rod mechanism, a stroke sensor, a main cylinder and the like. An ECU assembly consisting of an electronic control unit and a direct-current brushless motor is used as a core driving component of the iBooster, and the performance of the ECU assembly has a crucial influence on a braking system of an automobile. The existing related testing device and method are more devices and methods for testing the performance of the iBooster assembly, but cannot be used for independently testing the ECU assembly of the core control component of the iBooster assembly.
For example, a chinese patent document discloses a "system for testing simulated dynamic performance of a vehicle brake system", which is published under the publication number CN110608895A, and includes a system for testing simulated dynamic performance of a vehicle brake system, which belongs to the technical field of vehicle testing. The test system for simulating the dynamic performance of the whole vehicle brake system comprises a main driving subsystem, an inertia simulating subsystem, a parking brake subsystem, a noise detection subsystem, a pedal simulating subsystem, a brake energy recovery detection subsystem and a computer control subsystem, and the method comprises the following steps: based on the main driving subsystem, the computer control subsystem and the inertia simulation subsystem, simulating the inertia of the whole vehicle through mechanical inertia and electric inertia together, performing inertia simulation on the whole vehicle, and determining an inertia simulation result; based on the parking braking subsystem, the whole vehicle is subjected to braking calibration; based on a noise detection subsystem, carrying out noise data acquisition on the whole vehicle; the accuracy of the brake sensor is determined by simulating braking based on the main drive subsystem, the computer control subsystem, and the pedal simulation subsystem. According to the scheme, the brake-by-wire system assembly is calibrated, and the problems that the test cannot be completed before the brake-by-wire system assembly is assembled and the reworking of the brake-by-wire system iBooster assembly caused by the failure of the ECU assembly cannot be avoided exist.
Disclosure of Invention
The utility model relates to a solve prior art's iBooster assembly test system can't accomplish the test to the ECU assembly before the iBooster assembly attaches together, can't avoid because of the problem that the ECU assembly trouble leads to iBooster assembly to do over again, provide an ECU assembly on-line test system, effectively avoid ECU assembly trouble before the iBooster assembly attaches together.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
an online test system based on an ECU assembly comprises a control mechanism and a main support, wherein an execution mechanism and a load mechanism are arranged in the main support;
an executing mechanism: locking and moving the ECU assembly to the locked position,
a load mechanism: simulating the actual operation process of the ECU assembly,
a control mechanism: and carrying out data acquisition and control on the ECU assembly.
The ECU assembly to be tested is fixed by the executing mechanism, the ECU to be tested is moved to a position to be tested, the load mechanism is meshed with a motor output shaft in the ECU assembly, the ECU assembly is matched with a test system to be tested, and the ECU assembly is electrified, ignited and sent and collected by the control mechanism.
Preferably, the executing mechanism comprises a support and an upper needle bed, a bottom plate is arranged on the lower portion of the main support, a translation module is arranged on the bottom plate, the support and the bottom plate move relatively through the translation module, a product carrier is arranged above the support, the product carrier and the support move relatively through a jacking module, and the upper needle bed is fixed on the main support and arranged towards the bottom plate. The translation module comprises a translation cylinder, the translation cylinder is used for moving an ECU assembly installed on a product carrier to a test position, namely the upper end of the ECU assembly is opposite to the upper needle bed, the jacking module comprises a jacking cylinder, and the jacking cylinder is used for jacking the ECU assembly to enable the ECU assembly to be connected with the upper needle bed.
Preferably, load mechanism sets up and fixes with the support in product carrier below, load mechanism includes that torque speed sensor, hysteresis brake and load connect the cylinder, torque speed sensor one end is passed through the shaft coupling and is connected with hysteresis brake, and torque speed sensor's the other end passes through the shaft coupling and is connected the cylinder with the load and be connected, the output that the cylinder was connected to the load is equipped with the gear. The load connection cylinder is meshed with a motor output shaft in the ECU assembly by means of a gear at the output end, and therefore the ECU assembly is matched with a test system for testing.
Preferably, the bottom surface of the product carrier is provided with a positioning pin, and the rotary clamping module is installed on the product carrier. The product carrier is fixed a position the ECU assembly through the locating pin, and the rotary clamping module comprises a rotary clamping cylinder, and the rotary clamping cylinder can clamp and fix the ECU assembly on the product carrier.
Preferably, the control mechanism comprises an upper computer, a programmable power supply and a signal conditioning unit, wherein the upper computer controls the programmable power supply, the output of the programmable power supply is connected with the signal conditioning unit, and the upper computer controls the signal conditioning unit to acquire and control data of the ECU assembly. The upper computer is compiled by LabVIEW, the LabVIEW controls the signal conditioning unit to electrify the ECU, ignite and send and collect digital quantity analog quantity signals, and the LabVIEW controls the loading power supply to control the hysteresis brake.
Preferably, the lower part of the upper needle bed is provided with a floating plate, and the surface of the floating plate is provided with a conformal connector. The ECU assembly is jacked up by the jacking cylinder, and the floating plate of the upper needle bed is designed to float, so that the ECU assembly is flexibly and reliably connected with the conformal connector of the upper needle bed.
To sum up, the utility model discloses following beneficial effect has: (1) by testing the ECU assembly before the iBooster assembly is assembled in the ECU assembly testing system, the problem that the iBooster assembly is reworked due to the failure of the ECU assembly can be effectively avoided. (2) The testing system is reliably connected with the output shaft of the motor of the ECU assembly through the hysteresis brake, the torque rotating speed sensor, the load connecting cylinder and the floating plate of the upper needle bed. (3) The upper needle bed and the product carrier are replaceable and can be adapted to ECU assemblies of different models.
Drawings
Fig. 1 is a schematic view of a housing according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of an embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a load mechanism according to an embodiment of the present invention.
Fig. 4 is a schematic view of a product carrier structure according to an embodiment of the present invention.
Fig. 5 is a schematic view of the upper needle bed structure according to an embodiment of the present invention.
In the figure: 1. the device comprises a test device 2, a test bench 201, a rotary clamping module 202, a jacking cylinder 203, a translation cylinder 204, an ECU assembly 3, a loading mechanism 301, a hysteresis brake 302, a coupler 303, a torque rotating speed sensor 304, a load connecting cylinder 4, a product carrier 401, a positioning pin 5, an upper needle bed 502, a conformal connector 503, a floating plate 6 and a display screen.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the detailed description.
Example (b):
as shown in fig. 1 to 5, the online testing device 1 for the ECU assembly comprises a housing, a display screen 6 and a testing platform 2, wherein the display screen 6 is arranged on the surface of the housing, the testing platform 2 is arranged in the housing, the display screen 6 is arranged on one side surface of the housing, an opening is arranged on the side of the testing platform 2 of the housing, the opening is used for taking and placing a motor, a handheld code scanning gun is arranged on the testing platform 2 close to the opening, and the testing platform 2 comprises an executing mechanism used for fixing and transporting the ECU assembly 204; a load mechanism 3 for simulating an actual operation process; control mechanisms for data acquisition and control of the ECU assembly 204.
The executing mechanism comprises a support and an upper needle bed 5, a bottom plate is arranged on the lower portion of the main support, a translation module is arranged on the bottom plate, the support moves relative to the bottom plate through the translation module, a product carrier 4 is arranged above the support, the product carrier 4 moves relative to the support through a jacking module, and the upper needle bed 5 is fixed on the main support and arranged towards the bottom plate. The translation module comprises a translation cylinder 203, the translation cylinder 203 is used for moving an ECU assembly 204 mounted on the product carrier 4 to a testing position, namely the upper end of the ECU assembly 204 is opposite to the upper needle bed 5, the jacking module comprises a jacking cylinder 202, and the jacking cylinder 202 is used for jacking the ECU assembly 204 to enable the ECU assembly 204 to be connected with the upper needle bed 5. The bottom surface of the product carrier 4 is provided with a positioning pin 401, and the rotary clamping module 201 is installed on the product carrier 4. The product carrier 4 locates the ECU assembly 204 by locating pins 401 and the rotary clamping module 201 includes a rotary clamping cylinder that clampingly secures the ECU assembly 204 to the product carrier 4. The lower part of the upper needle bed 5 is provided with a floating plate 503, and the surface of the floating plate 503 is provided with a conformal connector 502. The jacking cylinder 202 jacks up the ECU assembly 204, and the floating plate 503 of the upper needle bed 5 is designed to float, so that the ECU assembly 204 is flexibly and reliably connected with the conformal connector 502 of the upper needle bed 5.
The control mechanism comprises an upper computer, a programmable power supply and a signal conditioning unit, wherein the upper computer controls the programmable power supply, the output of the programmable power supply is connected with the signal conditioning unit, and the upper computer controls the signal conditioning unit to acquire and control data of the ECU assembly 204. The upper computer is compiled by LabVIEW, the LabVIEW controls the signal conditioning unit to electrify the ECU, ignite and send and collect digital quantity analog quantity signals, and the LabVIEW controls the loading power supply to control the hysteresis brake 301.
The online test equipment 1 for the ECU assembly 204 of the embodiment comprises the following test steps:
action before test: LabVIEW controls the program control power supply and the signal conditioning box to power on and ignite the product.
The method comprises the following steps: motor speed and angle testing
LabVIEW sends a rotating speed instruction to an ECU based on CAN communication to control the motor to rotate, the instruction CAN be defined by user, and motor angle sine and cosine signals in a CAN message begin to be collected after the interval of 500 ms. And after continuously collecting for 5S, finishing the collection and sending a message to control the motor to stop. And analyzing the acquired sine and cosine signals to calculate the rotating speed and the phase difference, comparing the rotating speed and the phase difference with the standard, wherein the standard can be defined by users, and judging whether the rotating speed and the angle of the motor are normal or not.
Step two: motor torque control test
The load connect cylinder 304 is actuated so that the output shaft of the ECU assembly 204 engages the load. LabVIEW sends a torque instruction corresponding to a set torque value to the ECU based on CAN communication, the instruction CAN be customized, after the LabVIEW receives the affirmative response of the ECU to the torque instruction, the loading power supply is controlled, so that the load simulated by the hysteresis brake 301 is gradually loaded to the set torque value from the initial torque at a certain speed, and the loading speed and the torque value CAN be customized. And a certain time interval is set according to the loading speed, so that the torque of the load is ensured to be larger than the output torque of the motor, and the whole system is in a stable state. At this time, the system collects the value of the torque sensor for determining whether the ECU assembly 204 is operating normally under the operating condition. After the test is completed, the LabVIEW sends a 0Nm command to the ECU based on CAN communication, and then controls the loading power supply to be 0A, so that the hysteresis brake 301 is in a released state. And completing a complete test process of one moment point.
The above process can be configured by a program to realize the test of different torque values below 5Nm, and the range of the hysteresis brake 301 is 5 Nm.
Step three: pedal signal testing
A DO channel of the LabVIEW control board outputs a square wave signal with the frequency of 1kHz and the self-defined duty ratio to the ECU assembly 204, data of the pedal signals A and B are read through CAN communication, and whether the pedal signals A and B are normal or not is judged through analyzing the content of CAN communication messages.
After the three steps are completed, the PLC of the equipment configures an MES interface, can bind the test result and the scanned shell bar code and upload the test result and the scanned shell bar code to a server so as to facilitate subsequent quality tracing and select online/offline.
In the embodiment, the test of the ECU assembly 204 is completed by the test system of the ECU assembly 204 before the iBooster assembly is assembled, so that the problem that the iBooster assembly is reworked due to the failure of the ECU assembly 204 can be effectively avoided.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Although the terms actuator, load mechanism, control mechanism, coupling, torque speed sensor, etc. are used more generally herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.
Claims (8)
1. An ECU assembly online test system is characterized by comprising a control mechanism and a main support, wherein an execution mechanism and a load mechanism are arranged in the main support;
an executing mechanism: locking and moving the ECU assembly to the locked position,
a load mechanism: simulating the actual operation process of the ECU assembly,
a control mechanism: and carrying out data acquisition and control on the ECU assembly.
2. The system of claim 1, wherein the actuator comprises a support and an upper needle bed, the lower portion of the main support has a bottom plate, the bottom plate is provided with a translation module, the support moves relative to the bottom plate through the translation module, a product carrier is arranged above the support, the product carrier moves relative to the support through a jacking module, the upper needle bed is fixed on the main support, and the upper needle bed is arranged towards the bottom plate.
3. The online test system for the ECU assembly according to claim 2, wherein the load mechanism is arranged below the product carrier and fixed with the bracket, the load mechanism comprises a torque speed sensor, a hysteresis brake and a load connection cylinder, one end of the torque speed sensor is connected with the hysteresis brake through a coupler, the other end of the torque speed sensor is connected with the load connection cylinder through a coupler, and the output end of the load connection cylinder is provided with a gear.
4. The ECU assembly online test system according to claim 3, wherein the control mechanism comprises an upper computer, a programmable power supply and a signal conditioning unit, the upper computer controls the programmable power supply, the output of the programmable power supply is connected with the signal conditioning unit, and the upper computer controls the signal conditioning unit to collect and control data of the ECU assembly.
5. The ECU assembly online test system of claim 4, wherein the product carrier has a positioning pin on a bottom surface thereof and a rotary clamping module mounted thereon.
6. The ECU assembly online test system of claim 5, wherein a floating plate is arranged at the lower part of the upper needle bed, and the surface of the floating plate is provided with a conformal connector.
7. The ECU assembly online test system of claim 2 or 6, wherein the upper needle bed is connected to the main support through a needle bed positioning cylinder.
8. The system of claim 7, wherein the product carrier is fixedly mounted to the top surface of the bracket by a latch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121435862.9U CN215298024U (en) | 2021-06-25 | 2021-06-25 | ECU assembly online test system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121435862.9U CN215298024U (en) | 2021-06-25 | 2021-06-25 | ECU assembly online test system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215298024U true CN215298024U (en) | 2021-12-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121435862.9U Active CN215298024U (en) | 2021-06-25 | 2021-06-25 | ECU assembly online test system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215298024U (en) |
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2021
- 2021-06-25 CN CN202121435862.9U patent/CN215298024U/en active Active
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