CN-121979168-A - Electronic actuator test control device and control method

Abstract

The invention belongs to the technical field of industrial automation, and particularly relates to a test control device and a control method for an electronic actuator. The electronic actuator test control device provided by the invention integrates a core control unit, a driving execution unit, a feedback unit, a power supply unit and a man-machine interaction unit. The device supports an internal potentiometer, an external voltage, full on/full off, and bypass modes of operation. The device can be quickly switched to a bypass mode under an emergency condition through the built-in bypass switching unit, so that a third-party control signal is directly connected with an actuator without disconnecting, the response efficiency is greatly improved, and the anti-interference capability and the stability of the system are enhanced by adopting a power supply design that a motor driving power supply and a control power supply are physically isolated. The scheme of the invention can solve the problems of complicated construction, limited control precision, inconvenient emergency operation and the like of the existing test system, and has the advantages of high integration level, accurate control, flexible response, strong reliability and the like.

Inventors

• YANG HUA
• HE LI
• SHEN YUCHAO

Assignees

• 博马(太仓)科技有限公司

Dates

Publication Date

20260505

Application Date

20251216

Claims (10)

1. 1. An electronic actuator test control device, comprising: an integrated drive control box; the multifunctional integrated unit is arranged in the box body and comprises a core control unit, a driving execution unit, a feedback unit, a power supply unit and a man-machine interaction unit; a plurality of input interfaces arranged on the box body and used for receiving control signals from the inside or the outside; The actuator interface is arranged on the box body and is used for connecting an electronic actuator to be tested; and a third party bypass interface disposed on the cartridge; The core control unit is respectively connected with the driving execution unit, the feedback unit, the man-machine interaction unit and the input interface and used for generating a driving instruction according to the received control signal and the feedback signal, the driving execution unit is connected with the actuator interface and used for driving the electronic actuator according to the driving instruction, the feedback unit is connected with the actuator interface and used for collecting running state information of the electronic actuator, the power supply unit is used for supplying power for each unit in the box body, and a bypass switching unit is arranged between the third-party bypass interface and the actuator interface and used for switching the actuator interface into direct connection with the third-party bypass interface when the switching instruction is received.
2. 2. The electronic actuator test control device of claim 1, wherein the actuator interface includes a motor drive terminal and a sensor feedback terminal, the motor drive terminal being connected to the core control unit through the drive execution unit, the sensor feedback terminal being connected to the feedback unit.
3. 3. The electronic actuator test control device according to claim 1or2, wherein the core control unit comprises a Programmable Logic Controller (PLC) and a Pulse Width Modulation (PWM) output module, the man-machine interaction unit comprises a touch screen, the touch screen is in communication connection with the PLC, the driving execution unit comprises an H-bridge driving board and a direct current motor driving board which are sequentially connected, and an output end of the PWM output module is connected with the H-bridge driving board.
4. 4. The electronic actuator test control device of claim 3, wherein the power supply unit comprises a dc power module that provides at least two paths of mutually isolated dc voltage outputs, a first path supplying power to the core control unit and the human-computer interaction unit, and a second path supplying power to the drive execution unit and/or the feedback unit.
5. 5. The electronic actuator test control device of claim 1, wherein the feedback unit comprises: the angle sensor signal acquisition circuit is used for acquiring a voltage feedback signal of an angle sensor built in an electronic actuator through the actuator interface; The current acquisition module is used for acquiring the working current of the driving execution unit; the output ends of the angle sensor signal acquisition circuit and the current acquisition module are connected to the core control unit.
6. 6. The electronic actuator test control device according to claim 1, wherein the bypass switching unit includes a relay, a control coil of which is controlled by the core control unit, and a contact group of which is used to switch a motor drive signal path and/or a sensor power supply path of the actuator interface, and when the core control unit controls the relay to operate, the connection of the drive executing unit and the actuator interface is cut off, and the third-party bypass interface is communicated with a corresponding terminal of the actuator interface.
7. 7. The electronic actuator test control device of claim 1, wherein the device supports at least five modes of operation, a bypass mode, an internal potentiometer mode, an external voltage control mode, a fully on mode, and a fully off mode, wherein the mode switching is performed by the human-machine interaction unit or an external command.
8. 8. The electronic actuator test control device according to claim 3, wherein the man-machine interaction unit is replaced by a combined structure of a physical key and an LED nixie tube, the physical key is used for inputting a control command, and the LED nixie tube is used for displaying the running state data collected by the feedback unit.
9. 9. A control method based on the electronic actuator test control device according to any one of claims 1 to 8, characterized by comprising the steps of: receiving a mode selection instruction and determining the working mode of the device; If the working mode is an internal potentiometer mode, acquiring an internal control voltage signal generated by a panel potentiometer; If the working mode is an external voltage control mode, an external control voltage signal is obtained through an external input interface; If the working mode is a full-on or full-off mode, a corresponding preset position threshold value is called as a target signal; the core control unit takes the acquired internal control voltage signal, external control voltage signal or target signal as a set value and receives an actual position feedback signal of the electronic actuator acquired by the feedback unit; the core control unit generates a PWM driving instruction through a closed-loop regulation algorithm according to the difference value between the set value and the actual position feedback signal; the driving execution unit drives the electronic executor to act according to the PWM driving instruction until the difference value between the actual position feedback signal and the set value meets a preset condition; And displaying the set value, the actual position feedback signal and the working current information on the human-computer interaction unit in real time.
10. 10. The control method according to claim 9, characterized in that when switching to the bypass mode is required, the method further comprises: A stopping instruction is sent out through a man-machine interaction unit; after receiving the stopping instruction, the core control unit controls the bypass switching unit to act, cuts off the connection between the driving execution unit and the actuator interface, and conducts a direct connection channel between the third-party bypass interface and the actuator interface; And the third party control equipment directly controls the operation of the electronic actuator through the third party bypass interface.

Description

Electronic actuator test control device and control method Technical Field The invention belongs to the technical field of industrial automation, and particularly relates to a test control device and a control method for an electronic actuator. Background In the field of industrial automation, an electronic actuator is used as a core component for realizing accurate control of mechanical actions, and is widely applied to key scenes such as valve driving, mechanical arm joint adjustment and the like, and the control precision and the operation stability of the electronic actuator directly influence the working efficiency of the whole automation system. In order to meet the position control requirement of the electronic actuator, the prior art forms a plurality of control schemes, and becomes a mainstream application form in the industry. A typical split type driving control scheme adopts an architecture of an external PLC controller and an independent driving box, PWM control signals are generated by the external PLC controller and then transmitted to the independent driving box for power amplification, and finally an electronic actuator is driven to operate. The other multi-device cooperative control scheme is further provided with an independent feedback unit to form a combined structure of the PLC, the driving box and the independent feedback unit, and the signal generation, the power driving and the state feedback functions are realized through the cooperative work of the multi-device. In addition, there are other schemes that use an external 0-5V signal- & gt drive module- & gt simplified control link of the actuator, and directly control the drive module through an externally input analog voltage signal, so as to adjust the operation position of the actuator. Although the above solutions have been applied, a number of challenges remain in the actual testing and control process. The integration level of the prior art scheme is generally low, and the system is generally formed by connecting a plurality of independent controllers, drivers and feedback units through complex cables, so that the test system is complicated to build and huge in size, and the risk of faults caused by wiring errors is increased. Secondly, the test control precision of the existing scheme is often limited, and the test scene with extremely high requirements on positioning accuracy is difficult to meet. Furthermore, when a third party test device is required to be accessed or emergency operation is performed, the existing system generally lacks a fast and convenient interface and switching mechanism, which results in complicated operation flow and untimely response. In addition, the deployment and use costs of part of the schemes are high, and peripheral equipment such as a man-machine interaction interface, a special power conversion module and the like are required to be additionally configured, so that the overall cost and the maintenance complexity of the test system are increased. In summary, in practical application, the prior art scheme generally faces the problems of complicated system construction, limited control precision, delayed emergency response, complex deployment and maintenance and the like, and is difficult to fully adapt to the actual requirements of an industrial automation scene on high efficiency, high precision, high reliability and emergency flexible response of control equipment. Disclosure of Invention Aiming at the defects existing in the prior art, the invention provides a test control device and a control method for an electronic actuator. The invention aims to provide a novel test control scheme to meet urgent requirements of an industrial site on high efficiency, accuracy, flexibility and easiness in maintenance of test equipment. The first aspect of the present invention provides an electronic actuator test control device, comprising: an integrated drive control box; the multifunctional integrated unit is arranged in the box body and comprises a core control unit, a driving execution unit, a feedback unit, a power supply unit and a man-machine interaction unit; a plurality of input interfaces arranged on the box body and used for receiving control signals from the inside or the outside; the actuator interface is arranged on the box body and is used for connecting an electronic actuator to be tested; and a third party bypass interface disposed on the cartridge; The core control unit is respectively connected with the driving execution unit, the feedback unit, the man-machine interaction unit and the input interface and used for generating a driving instruction according to the received control signal and the feedback signal, the driving execution unit is connected with the actuator interface and used for driving the electronic actuator according to the driving instruction, the feedback unit is connected with the actuator interface and used for collecting running state information of the electronic a