Temperature cycle aging test device for driver

Abstract

The utility model discloses a temperature cycle aging test device used for drivers, comprising an environment test cabinet body and a temperature cycle aging box used for placing a plurality of drivers, an industrial control computer, a plurality of communication board cards, a PLC and a power supply module are installed in the environment test cabinet body, the industrial control computer adopts a PCI controller with a plurality of PCI slots, the plurality of communication board cards are integrated through the PCI slots, and the PLC is connected with the PLC and the power supply module. A plurality of communication board cards are connected with a plurality of drivers to obtain data of the drivers, meanwhile, the drivers are connected with the power supply module and the servo motor through cables, and the industrial personal computer, the power supply module and the temperature cycle aging box are in communication connection with the PLC to perform data communication. The device can communicate with various servo drivers, and meets the temperature cycle aging requirements of various types of drivers.

Description

Technical Field

[0001] The utility model relates to a temperature cycle aging test device, in particular to a temperature cycle aging test device for a driver. Background Art

[0002] The servo driver that comes with the product needs to undergo temperature cycling and aging tests during delivery. During the test, the product current, voltage, etc. need to be detected, and the product performance needs to be tested. A single set of equipment requires a large number of people, and testing of multiple models of drivers takes a long time.

[0003] The Chinese patent with publication number CN111624490A and name "A burn-in test system for permanent magnet synchronous motors" includes an industrial computer, a motor driver under test, a motor under test, a simple motor drag test bench, a load motor, a load box, a test cable and a control system. The industrial computer and the motor driver under test are electrically connected through the test cable, and the motor under test and the motor driver under test are electrically connected through two test cables, one cable provides output power and the other provides a resolver feedback signal; the patent has the following defects: 1. It cannot meet the driver tests of multiple communication modes and cannot meet the burn-in requirements of multiple models of drivers, 2. The data acquisition reliability is low. Utility Model Content

[0004] The utility model aims to provide a temperature cycle aging test device for a driver, which can communicate with a variety of servo drivers, meet the aging requirements of various types of drivers, realize the collection of redundant data, and improve the reliability of data collection.

[0005] The technical solution of the experiment object of the present invention is:

[0006] A temperature cycle aging test device for a driver comprises an environmental test cabinet and a temperature cycle aging box for placing multiple drivers. An industrial computer, multiple communication boards, a PLC and a power module are installed in the environmental test cabinet. The industrial computer adopts a PCI controller with multiple PCI slots, integrates multiple communication boards through the PCI slots, connects multiple drivers through the multiple communication boards, and obtains driver data. At the same time, the driver is connected to the power module and the servo motor through cables. The industrial computer, the power module and the temperature cycle aging box are connected to the PLC for data communication.

[0007] Furthermore, the communication boards include 1Mbps and 4Mbps dual-channel redundant 1553B bus communication boards and RS422 bus communication boards.

[0008] Furthermore, the temperature cycle aging box includes a test box for temperature cycle test and a test box for aging test, and the compressor in the test box for temperature cycle test is connected to a water cooling device.

[0009] Furthermore, the industrial computer is connected to a display, a keyboard, a mouse, a card reader, a printer and a switch via cables.

[0010] Furthermore, the power supply module includes a DC control power supply and a DC power supply, the DC control power supply provides control power, the DC power supply provides power power, and is connected to the driver via a cable.

[0011] Furthermore, the PLC includes a PLC body, a switch output module, an analog input module, a power-on contactor, a voltage transmitter, and a current transmitter. The host computer sends a driver power-on instruction to the PLC body through Ethernet, and the PLC body sends a switch output instruction to the switch output module. The switch output module controls the power-on contactor to power on the DC control power supply and the DC power supply. The analog input module detects the loop voltage through the voltage transmitter. The DC control power supply voltage is normal. The switch output module controls the power-on contactor to power on the tested driver. The DC power supply is powered on in the same way as the DC control power supply, and the loop current is detected by the current transmitter. The PLC ensures safe power-on timing control in which the driver control power is powered on first and the power power is powered on later, and the power power is powered off first and the control power is powered off later. At the same time, the entire process is redundantly judged through transmitter acquisition and communication acquisition to achieve full-process voltage and current monitoring for product status detection and safety protection.

[0012] Furthermore, the power module and the temperature cycle aging box communicate with the PLC via a LAN interface.

[0013] Furthermore, the industrial computer communicates with an external industrial control network via a LAN interface to transmit data.

[0014] Furthermore, it also includes an audio-visual alarm module connected to the PLC.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] (1) The test system adopts the technical solution of PCI bus + inserting multiple communication protocol boards. The industrial computer host contains an internal expansion slot of the PCI controller, which can be inserted with dual-channel redundant 1553B bus communication boards with communication rates of 1Mbps and 4Mbps, multi-channel high-speed independent communication RS422 bus communication boards, and other communication boards. The integrated multiple communication boards can communicate with multiple servo drives to meet the aging requirements of various models of drives;

[0017] (2) The redundant data collection and judgment of the key parameters of the driver are carried out. The system not only reads the voltage and current of the driver power supply through communication, but also adds a transmitter to collect voltage and current. The dual redundancy method is used as the key judgment indicator of abnormal data appearing in the driver aging process, which improves the reliability and robustness of the system.

[0018] (3) The equipment has an alarm processing function when in use, which ensures product safety and improves product testing quality and efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is the working principle diagram of the test device.

[0020] Figure 2 The block diagram of the experimental device is shown in Figure 2. DETAILED DESCRIPTION

[0021] This patent provides a servo drive temperature cycle aging test device, the working principle of which is as follows: Figure 1 As shown, the industrial computer host sends instructions through the PCI bus, and communicates through the LAN interface of the industrial computer host to control the high-temperature test chamber, high-power DC power supply and control DC power supply; communicates with the servo mechanism driver through the 1553B bus or RS422 bus. The industrial computer configures the state parameter information required for the test process, runs real-time reading of the control power supply current and the test chamber temperature information, and stores, calculates and compares these data, and alarms when abnormalities occur during the test process; automatically sends test command signals at regular intervals, and reads and saves test data at regular intervals; after the test is completed, it can generate and print test reports according to the preset report format in the program. The test device host is connected to a mouse, keyboard, and monitor for human-computer interaction with the operator; the card reader is connected to enter the tester's identity information for subsequent operations; and the QR code scanner is connected to enter the test product information.

[0022] Based on the above principle, a specific module composition of a servo drive temperature cycle aging test device is provided. As an independent test device, the test device mainly completes the drive product status test and status confirmation, such as Figure 2 The entire test device includes an industrial computer (including 1553B communication board and RS422 communication board), an industrial display, general input and output devices (keyboard, mouse), a switch, a printer, a high-power DC power supply, a DC control power supply, a high and low temperature test chamber (one set, for temperature cycle test), a high temperature test chamber (one set, for aging test), a set of water cooling equipment (for temperature cycle test), and a set of PLC control system.

[0023] According to the technical requirements of the test device and the characteristics of the servo drive test, the test device adopts PCI bus technology. Among them, the industrial computer host contains an internal expansion slot of the PCI controller, which can be inserted with a dual-channel redundant 1553B bus communication card (multi-channel communication) with a communication rate of 1Mbps and 4Mbps, and a multi-channel high-speed independent communication RS422 bus communication card, and retains 2 to 3 expansion slots for subsequent equipment upgrades and renovations. It can communicate with a variety of servo drives to meet the aging needs of various models of drives. The industrial computer is connected to external devices such as monitors, keyboards, mice, card readers, printers and switches through universal cables.

[0024] The industrial computer host of this embodiment uses Advantech's original ACP-4020 / AIMB-785, and the internal PCI slots of the industrial computer include 3 32-bit / 33MHz PCI slots, 3 PCIEX4 and 1 PCIEX16.

[0025] High and low temperature test chambers, high temperature test chambers, high-power DC power supplies, controlled DC power supplies and other equipment communicate with PLC through the LAN interface. PLC communicates with industrial computers in real time, receives control instructions from the industrial computers, and uploads and collects equipment status parameter information.

[0026] The servo drive to be tested is placed in a high and low temperature test chamber (for temperature cycle test) or a high temperature test chamber (for aging test), and connected to the servo motor, desktop power supply, and high-power DC power supply through cables; it communicates with the industrial computer host through the 1553B bus or RS422 bus. Various test instructions issued by the industrial computer host are sent to the servo drive through various communication boards such as 1555B and 422, and the servo drive returns the internal state parameters of the servo drive to the communication board.

[0027] The servo drive power supply component is mainly composed of control power and power power. The PLC electrical control system is mainly composed of PLC body, switch output module, analog input module, power-on contactor, voltage transmitter, current transmitter, etc. The test command sends the driver power-on command to the PLC electrical control system through Ethernet. The PLC body sends the switch output command to the switch output module. The switch output module controls the control power of the power-on contactor. The analog input module detects the control power voltage through the voltage transmitter. If the control power voltage is normal, the DC power supply is powered on in the same way as the DC control power supply. The loop current is detected through the current transmitter. The switch output module controls the power supply of the power-on contactor to realize the collection of redundant data and improve the reliability of data collection.

[0028] The test process protects the servo drive. If an abnormality occurs during the test, the PLC body receives an abnormal power-off command through Ethernet. The PLC body sends a switch output command to the switch output module. The switch output module controls the power-on contactor to cut off the power, delays 30 seconds to cut off the control power, and retains the abnormal test curve.

[0029] The device also includes an acoustic and optical alarm module connected to the PLC. If the test index is out of tolerance, the PLC electrical control system will sound an alarm through the acoustic and optical alarm system and automatically cut off the power supply.

[0030] In order to maximize efficiency and make full use of the test chamber, the temperature cycle test device and the aging test device can simultaneously perform temperature cycle aging tests on multiple servo drives of the same model. The test device retains the Ethernet communication interface and can communicate with the industrial control network using Ethernet communication data to transmit information such as test tasks, test status, test data, and test failures.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A temperature cycle aging test device for a driver, characterized in that: It includes an environmental test cabinet and a temperature cycle aging box for placing multiple drivers. An industrial computer, multiple communication boards, a PLC and a power module are installed in the environmental test cabinet. The industrial computer adopts a PCI controller with multiple PCI slots, and multiple communication boards are integrated through the PCI slots. Multiple drivers are connected through the multiple communication boards to obtain driver data. At the same time, the driver is connected to the power module and the servo motor through cables. The industrial computer, the power module and the temperature cycle aging box are connected to the PLC for data communication.

2. The temperature cycle aging test device according to claim 1, characterized in that: The communication boards include 1Mbps and 4Mbps dual-channel redundant 1553B bus communication boards and RS422 bus communication boards.

3. The temperature cycle aging test device according to claim 1, characterized in that: The temperature cycle aging box includes a test box for temperature cycle test and a test box for aging test. The compressor in the test box for temperature cycle test is connected to a water cooling device.

4. The temperature cycle aging test device according to claim 1, characterized in that: The industrial computer is connected to a display, a keyboard, a mouse, a card reader, a printer and a switch via cables.

5. The temperature cycle aging test device according to claim 1, characterized in that: The power supply module includes a DC control power supply and a DC power supply. The DC control power supply provides control power, and the DC power supply provides power power. The power supply module is connected to the driver through a cable.

6. The temperature cycle aging test device according to claim 5, characterized in that: The PLC includes a PLC body, a switch output module, an analog input module, a power-on contactor, a voltage transmitter, and a current transmitter. The host computer sends a driver power-on instruction to the PLC body via Ethernet, and the PLC body sends a switch output instruction to the switch output module. The switch output module controls the power-on contactor to power on a DC control power supply and a DC power supply. The analog input module detects the loop voltage via a voltage transmitter. If the DC control power supply voltage is normal, the switch output module controls the power-on contactor to power on the driver under test. The DC power supply is powered on in the same way as the DC control power supply, and the loop current is detected via a current transmitter.

7. The temperature cycle aging test device according to claim 1, characterized in that: The power module and the temperature cycle aging box communicate with the PLC via a LAN interface.

8. The temperature cycle aging test device according to claim 1, characterized in that: The industrial computer communicates with the external industrial control network through the LAN interface to transmit data.

9. The temperature cycle aging test device according to any one of claims 1 to 8, characterized in that: It also includes an audible and optical alarm module connected to the PLC.

Images