A comprehensive performance detection system of a straight stroke electric actuator
Patent Information
- Application Number
- CN202522037268.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-23
- Publication Date
- 2026-09-08
- Estimated Expiration
- 2035-09-23
AI Technical Summary
而目前针对直行程电动执行机构的检测仍采用人工检验，准确性差、效率低，且部分检验无法完成的缺陷，需要进行改进
本实用新型采用PLC控制，能够根据设定好的检验流程自动化控制待检直行程执行机构按设定流程运行，并通过接线端子对直行程电动执行机构的信号进行检测，通过线性位移传感器对直行程电动执行机构的精度进行检测，通过交流接触器对直行程电动执行机构的电源性能进行检测，并根据结果判定所有的检测指标是否合格。该检测方案采用了人机交互显示屏，方便使用者进行电动执行机构供电方式、开关型调节型的选择、执行机构条码的录入，测试进度和测试结果的显示、检测数据的保存导出等进行信息交互，并可以将检测结果上传至服务器进行存储、检索。
Smart Images
Figure CN224731348U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a comprehensive performance testing system for linear electric actuators. Background Technology
[0002] Linear electric actuators have developed rapidly and are used in various industries, especially in industrial automation where performance requirements are particularly high. However, current testing of linear electric actuators still relies on manual inspection, which suffers from poor accuracy, low efficiency, and inability to complete certain defects during inspection. Improvements are needed. Summary of the Invention
[0003] The purpose of this invention is to address the shortcomings of existing technologies and provide a system capable of automating the detection of linear electric actuators.
[0004] To achieve the above objectives, this utility model provides a comprehensive performance testing system for linear electric actuators, including terminal blocks, a linear displacement sensor, an AC contactor, a PLC, a host computer, and a server. The PLC is connected to the power control of the linear electric actuator under test via the AC contactor. The PLC is connected to the terminal block of the linear electric actuator under test via the terminal blocks. The linear displacement sensor is connected to the output shaft bracket of the linear electric actuator under test. The PLC is communicatively connected to the linear displacement sensor. The PLC is communicatively connected to the server via the host computer.
[0005] This utility model utilizes a PLC to control the power supply of a linear electric actuator (hereinafter referred to as the actuator) via an AC contactor, enabling power supply for both single-phase and three-phase actuators. The three-phase actuator can also perform power supply testing for phase loss and phase sequence switching to verify the power performance of the linear actuator. Furthermore, the PLC detects signals from the actuator's terminals via wiring terminals and uses a linear displacement sensor to collect the absolute position of the linear electric actuator under test in real time. Simultaneously, it performs fully automated testing of the actuator's comprehensive performance, including power supply, signal strength, and accuracy.
[0006] Furthermore, this utility model's comprehensive performance testing system also includes a barcode scanner and a human-machine interface (HMI); the barcode scanner is connected to the PLC via the HMI. Information about the actuator under test is entered using the barcode scanner. Communication between the HMI and the PLC is via Modbus RTU. The PLC sends the test data to the HMI via Modbus RTU, and the HMI uploads the test data to a host computer via Modbus TCP. The host computer then uploads the data to a server.
[0007] Further, the above comprehensive performance detection system further comprises a 24VDC power supply that supplies power to the PLC and the human-machine interface.
[0008] Further, the terminal block is provided with 23 probes docked with the straight-stroke electric actuator to be detected, including 3 power output probes and 20 signal probes. The signals of the actuator are detected through the terminal block.
[0009] Further, the linear displacement sensor is docked with the output shaft bracket of the straight-stroke electric actuator to be detected through a magnetic steel. The linear displacement sensor is used to measure the absolute position of the actuator, and the position data is transmitted to the PLC via ModbusRTU. The PLC compares the theoretical position with the actual position to obtain the accuracy of the straight-stroke actuator.
[0010] Further, the above human-machine interface adopts a touch screen.
[0011] Compared with the prior art, the present utility model has the following advantages: The present utility model adopts PLC control, which can automatically control the straight-stroke actuator to be detected to operate according to a set inspection process, detect the signal of the straight-stroke electric actuator through the terminal block, detect the accuracy of the straight-stroke electric actuator through the linear displacement sensor, detect the power performance of the straight-stroke electric actuator through the AC contactor, and determine whether all detection indicators are qualified according to the results. The detection scheme adopts a human-machine interaction display screen, which is convenient for users to perform information interaction such as selection of power supply mode of the electric actuator, selection of switch type and regulation type, input of actuator bar code, display of test progress and test results, saving and exporting of detection data, and can upload the detection results to a server for storage and retrieval.
[0012] The present utility model can automatically detect the power, signal and accuracy of the actuator, and upload the detection data to the server, which greatly improves the detection efficiency and ensures the safety of detection personnel. Description of Drawings
[0013] Figure 1 is a principle block diagram of actuator detection performed by the comprehensive performance detection system of the present utility model. Detailed Description of Embodiments
[0014] The present utility model is further described below with reference to the accompanying drawings.
[0015] as Figure 1As shown, this utility model discloses a comprehensive performance testing system for linear electric actuators, including a 24VDC power supply, terminal blocks, a linear displacement sensor, an AC contactor, indicator lights, a barcode scanner, a human-machine interface, a PLC, a host computer, and a server. This comprehensive performance testing system for linear electric actuators (the linear actuator under test shown in the figure, hereinafter referred to as the actuator) can test regulating and switching type linear electric actuators, and supports 220VAC, 380VAC, and 24VDC actuator power supply types.
[0016] The PLC, acting as the controller, performs automated factory inspection of linear electric actuators according to a pre-designed process. This inspection covers the actuator's overall performance, including power supply, signal strength, and accuracy, generating test data and determining the pass / fail status of all test indicators. The PLC includes digital output (DO), digital input (DI), analog output (AO), and analog input (AI) modules. The PLC connects to the actuator's terminals via 23 probes (three power outputs and 20 signal probes) to ensure reliable signal and power connections. These PLC modules can be used to test the actuator's DI, DO, AI, and AO functions. The PLC communicates with a linear displacement sensor via RS-458 to obtain the actual position information measured by a precision tooling. The accuracy of the linear electric actuator is calculated by comparing the actual and target position information. The PLC communicates with the human-machine interface via RS-485 to receive operation commands from the tester. The PLC's DO module is also connected to an AC contactor. By controlling the AC contactor's on / off state, it controls the power supply to the electric actuator, which is used to detect the electric actuator's phase loss alarm and phase sequence adaptive function.
[0017] The human-machine interface is a touchscreen. Operators use this interface to operate the comprehensive performance testing system for linear electric actuators. They input the actuator's nameplate information using a barcode scanner and select the power supply and control type. Once completed, the automated testing process begins. The human-machine interface has a data storage function, capable of recording over 1000 data points and uploading them to the host computer via Modbus TCP.
[0018] The linear displacement sensor connects to the output shaft bracket of the linear electric actuator via a magnet; the magnetic engagement method makes installation quick and easy. The linear displacement sensor measures the displacement of the output shaft and transmits the data to the PLC for calculation via RS-485 communication.
[0019] Before starting the automated factory inspection process, power the comprehensive performance testing system for the linear electric actuator using a three-phase five-wire plug. Once power is successfully supplied, the indicator light will remain on, indicating the power-on status. Then, connect the terminal blocks and linear displacement sensor to the linear electric actuator. After wiring, select the actuator's power supply voltage type and switch / regulation control type. Then, use a barcode scanner to input the nameplate information of the linear electric actuator, and the automated testing process can begin. The process will automatically test 19 switch-type tests and 24 regulation-type tests (DO1IO comprehensive alarm, DO2 remote indication, DO3 power indication, DO4 open position, DO5 closed position, DI open, DI closed, DI stopped, DIESD, AO no jump, AO load capacity, AO feedback, power phase loss, power phase sequence self-adaptation, motor forward and reverse rotation, repeatability accuracy on, repeatability accuracy off, full stroke time, speed, accuracy, hysteresis, dead zone, AI signal failure test, AI control). The testing interface uses color coding to indicate the inspection status of each item: gray for pending inspection, green for qualified, and red for unqualified. A "qualified" window pops up when all items pass, and a "unqualified" window pops up for any unqualified items. Simultaneously, the data is transmitted to the host computer via the human-machine interface, and then uploaded to the server. Data is also stored in the human-machine interface during the upload process. If the upload fails due to network fluctuations or other reasons, the stored inspection data can be re-uploaded.
[0020] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements can be made without departing from the principle of the present utility model, and these improvements should also be considered within the protection scope of the present utility model.
Claims
1. A comprehensive performance testing system for a linear electric actuator, characterized in that, The system includes terminal blocks, a linear displacement sensor, an AC contactor, a PLC, a host computer, and a server. The PLC is connected to the power control of the linear electric actuator under test via the AC contactor. The PLC is connected to the terminal blocks of the linear electric actuator under test via the terminal blocks. The linear displacement sensor is connected to the output shaft bracket of the linear electric actuator under test. The PLC is communicatively connected to the linear displacement sensor. The PLC is communicatively connected to the server via the host computer.
2. The comprehensive performance testing system for linear electric actuators according to claim 1, characterized in that, The integrated performance testing system also includes a barcode scanner and a human-machine interface; the barcode scanner is connected to the PLC via the human-machine interface.
3. The comprehensive performance testing system for linear electric actuators according to claim 2, characterized in that, The integrated performance testing system also includes a 24VDC power supply for powering the PLC and the human-machine interface.
4. The comprehensive performance testing system for a linear electric actuator according to claim 3, characterized in that, The terminal block is equipped with 23 probes that interface with the linear electric actuator to be tested, including 3 power output probes and 20 signal probes.
5. The comprehensive performance testing system for a linear electric actuator according to claim 4, characterized in that, The linear displacement sensor is connected to the output shaft support of the linear electric actuator to be tested via a magnet.
6. The comprehensive performance testing system for a linear electric actuator according to claim 5, characterized in that, The human-computer interaction interface is a touch screen; the human-computer interaction interface is connected to the host computer for communication.