A measuring device for measuring the rotational accuracy of an electric actuator.

Abstract

This utility model discloses a measuring device for measuring the rotational accuracy of an electric actuator, comprising an electric actuator, an encoder, an analog module, a PLC controller, a touch screen, and a power supply module. The electric actuator receives analog control signals and performs angular displacement; the encoder is installed at its output and is used to collect angular travel data; the analog module receives the 4-20mA analog signal output by the electric actuator and converts it into a digital signal; the PLC controller receives data from the encoder and analog module and performs accuracy analysis; the touch screen is connected to the PLC and displays the measurement results in real time; the power supply module provides power to all the above components. This device has a compact structure, high-precision automatic measurement capabilities, significantly improves testing efficiency, and reduces manual operation costs, making it suitable for rapid testing and quality assessment of industrial electric actuators.

Description

Technical Field

[0001] This utility model relates to an electric actuator, specifically to a measuring device for measuring the rotational accuracy of the electric actuator. Background Technology

[0002] Electric actuators are widely used in industrial process control systems, and their rotational accuracy has a significant impact on the control performance and system stability of the actuator. Currently, the industry commonly uses dynamometers to test the performance of electric actuators, mainly measuring parameters such as angular rotational accuracy, response characteristics, and load capacity. Dynamometers typically integrate angle sensors, electrical parameter acquisition instruments, and speed and torque detection devices, and are equipped with an industrial-grade PLC for data processing.

[0003] However, existing dynamometer equipment has the following obvious drawbacks: First, such devices are complex in structure and bulky in size. Before testing, the electric actuator must be fixedly installed on the dynamometer platform, which involves repeated disassembly and reassembly of the actuator mounting screws. This is not only time-consuming and labor-intensive, but also poses certain safety hazards. Second, the equipment is expensive, and its accuracy decreases significantly after long-term use, resulting in high maintenance costs. Third, in actual operation, measurement data usually needs to be recorded manually or collected through external software. This process is cumbersome, inefficient, and prone to introducing human error, affecting the accuracy and repeatability of the test. Summary of the Invention

[0004] To address the aforementioned issues, this invention provides a measuring device for measuring the rotational accuracy of electric actuators. This device can automatically complete data acquisition and recording, thereby improving testing efficiency and data management, and meeting the rapid testing needs of enterprises in mass production processes.

[0005] This utility model is achieved through the following technical solution: a measuring device for measuring the rotational accuracy of an electric actuator, comprising:

[0006] Electric actuators are used to receive analog control signals and perform angular displacement.

[0007] An encoder, connected to the output end of the electric actuator, is used to collect the angle and stroke data of the electric actuator;

[0008] The analog signal module is used to receive the 4-20mA analog signal output by the electric actuator and convert it into a digital signal;

[0009] The PLC controller is used to receive the calculated data from the encoder and analog module, and perform accuracy analysis and processing according to the preset program;

[0010] A touch screen, connected to the PLC controller, is used to display measurement results in real time;

[0011] The power supply module is used to power the electric actuator, analog module, encoder, PLC controller and touch screen.

[0012] As a preferred technical solution, the encoder has a repeatability accuracy of less than or equal to 1 bit.

[0013] As a preferred technical solution, the encoder is fixed to the output end of the electric actuator via a mounting flange.

[0014] As a preferred technical solution, the PLC controller and the touch screen are connected via serial communication to achieve data synchronization and user interaction.

[0015] As a preferred technical solution, the PLC controller communicates with the analog module and encoder via Modbus or 485 communication protocol.

[0016] The beneficial effects of this utility model are: This device adopts the method of directly installing the encoder on the output end of the electric actuator and combining analog signal acquisition and PLC data processing, which eliminates the cumbersome steps of disassembling and assembling the actuator required by the traditional dynamometer, greatly improving the measurement efficiency, and increasing the testing efficiency of a single unit by more than 50%.

[0017] Compared with traditional precision dynamometers, this device has a simplified overall structure, standardized selection of core components, low manufacturing cost, and convenient maintenance. The overall cost can be reduced by about 90%, significantly reducing the burden on enterprises.

[0018] This device integrates a PLC control system and has a built-in calculation program that conforms to the JB / T 8219-2016 industrial standard. It can automatically complete accuracy calculations, display results, and export data to a USB drive, avoiding human error and improving test consistency and data traceability. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a system block diagram of the present invention. Detailed Implementation

[0021] All features disclosed in this specification, or all steps in all disclosed methods or processes, may be combined in any way, except for mutually exclusive features and / or steps.

[0022] Any feature disclosed in this specification (including any appended claims, abstract, and drawings) may be replaced by other equivalent or similar features, unless specifically stated otherwise. That is, unless specifically stated otherwise, each feature is merely one example of a series of equivalent or similar features.

[0023] like Figure 1 As shown, the present invention provides a measuring device for measuring the rotational accuracy of an electric actuator, and its specific implementation method is described below.

[0024] The measuring device of this utility model mainly includes an electric actuator, an encoder, an analog module, a PLC controller, a touch screen, and a power supply module. The components are connected by reasonable electrical connections and structural installation to form a complete rotary accuracy testing system. It features a compact structure, high degree of automation, and excellent accuracy, and is suitable for rapid testing of the performance parameters of electric actuators in industrial settings.

[0025] The electric actuator, as the tested object, functions to receive externally input 4-20mA analog control signals and achieve mechanical displacement of the corresponding angle based on the signal strength. This analog signal typically originates from preset control commands within the PLC control system or a standard signal source provided by an external testing system. In this device, the electric actuator, analog module, and power module are connected via shielded cables to ensure signal transmission stability and anti-interference capability. A dedicated interface is provided at the actuator output for mounting an encoder to synchronously acquire its displacement data.

[0026] The encoder is mounted on the output end of the electric actuator and mechanically fixed via an adapter flange. This installation method is robust and reliable, facilitating replacement and maintenance. To ensure high resolution and repeatability of test results, the encoder selected in this device has a repeatability of less than or equal to 1 bit, enabling precise recording of the actuator's position changes during angular response. The encoder's output signal is transmitted to the PLC controller via a communication interface. Its communication protocol supports Modbus RTU or RS-485 standards to ensure real-time data transmission and compatibility.

[0027] The analog module receives the 4-20mA current signal output from the electric actuator and converts it into a standard digital signal for PLC processing. To meet high-precision measurement requirements, the selected module has a load capacity of at least 700Ω, a voltage conversion error of no more than 2‰, and an industrial-grade anti-interference design, enabling stable operation in complex industrial environments. This module also uses Modbus or RS-485 communication protocols to connect to the PLC controller, achieving high reliability and flexibility in data exchange.

[0028] The PLC controller is the core control unit of the entire system. It receives data input from the encoder and analog module, and uses built-in programs to calculate and analyze the rotation angle, response time, and deviation between analog commands and actual actions of the electric actuator. The calculation program is based on the industry standard JB / T 8219-2016 "General and Intelligent Electric Actuator Mechanisms for Industrial Process Control Systems," enabling quantitative evaluation of the actuator's rotation accuracy. The PLC controller and the touchscreen are connected via serial communication, such as using RS-232 or RS-485 interfaces, ensuring stable communication and real-time updates to the interface display.

[0029] The touchscreen displays the data collected during the measurement process and the calculated rotational accuracy results in real time. Users can set parameters, browse data, and control test operations via the touchscreen, making it intuitive and easy to use. All measurement results are automatically saved in the PLC's memory and can be exported via USB flash drive for convenient quality traceability and data analysis later.

[0030] The power supply module provides a stable power supply to all parts of the device, supporting 24V DC or 220V AC input conversion. It features short-circuit protection, overload protection, and voltage regulation functions to ensure the safety and reliability of the entire system during long-term operation. The power supply module supplies power to the electric actuators, encoders, PLC controllers, touch screens, and analog modules, and is uniformly laid out through wiring terminals for easy installation, wiring, and subsequent maintenance.

[0031] The entire device has a compact structure, standardized interfaces, and is easy to operate, making it suitable for rapid deployment and mobile testing in production workshops.

[0032] During use, simply install the encoder onto the output end of the electric actuator; no disassembly of the actuator body or alteration of the equipment installation method is required for efficient testing. The testing process is fully automated, eliminating the need for manual recording, thus improving testing efficiency and data accuracy. This effectively solves the problems of complex structure, high operating costs, and high degree of manual intervention associated with existing dynamometer equipment.

[0033] This device boasts excellent versatility, scalability, and stability, making it an ideal measurement tool for routine quality testing and laboratory performance evaluation in enterprises.

[0034] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions conceived without inventive effort should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope defined in the claims.

Claims

1. A measuring device for measuring the rotational accuracy of an electric actuator, characterized in that, include: Electric actuators are used to receive analog control signals and perform angular displacement. An encoder, connected to the output end of the electric actuator, is used to collect the angle and stroke data of the electric actuator; The analog signal module is used to receive the 4-20mA analog signal output by the electric actuator and convert it into a digital signal; The PLC controller is used to receive the calculated data from the encoder and analog module, and perform accuracy analysis and processing according to the preset program; A touch screen, connected to the PLC controller, is used to display measurement results in real time; The power supply module is used to power the electric actuator, analog module, encoder, PLC controller and touch screen.

2. The measuring device for measuring the rotational accuracy of an electric actuator according to claim 1, characterized in that: The encoder has a repeatability accuracy of less than or equal to 1 bit.

3. The measuring device for measuring the rotational accuracy of an electric actuator according to claim 1, characterized in that: The encoder is fixed to the output end of the electric actuator via a mounting flange.

4. The measuring device for measuring the rotational accuracy of an electric actuator according to claim 1, characterized in that: The PLC controller and the touch screen are connected via serial communication to achieve data synchronization and user interaction.

5. The measuring device for measuring the rotational accuracy of an electric actuator according to claim 1, characterized in that: The PLC controller communicates with the analog module and encoder via Modbus or 485 communication protocols.

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