Intelligent anti-overload servo test turntable and working method thereof

Abstract

The invention discloses an intelligent anti-overload servo test turntable and a working method thereof. The rotary table comprises an upper computer, a servo control box and a servo rotary table, wherein the upper computer is used for man-machine interaction and control strategy issuing; the servo control box is used for receiving a control strategy of the upper computer, resolving a position signal and a load signal of the servo test rotary table, controlling the servo test rotary table to rotate in real time, and uploading real-time position and state information of the servo test rotary table; and the servo turntable is used for receiving and executing a control instruction of the servo control box, monitoring position information and load information of the servo test turntable in real time, and transmitting the position information and the load information to the servo control box. According to the invention, the intelligent anti-overload function of the servo turntable is realized, the use convenience of the servo test turntable is improved, the load threshold setting and real-time load display functions are realized, the safety and reliability of the servo test turntable are improved, the structure is simple, the production cost is low, the universality is good, and the applicability is high.

Description

Technical Field

[0001] This invention relates to the field of industrial automation technology, and in particular to an intelligent overload-resistant servo test turntable and its working method. Background Technology

[0002] A servo test turntable is a scientific instrument that provides high-precision positioning and servo functions. In normal use, the test platform is first mounted on the surface of the servo test turntable. Then, the host computer sends manipulation commands to move the turntable to the target position, allowing the test platform to perform the next functional verification at the designated location. Due to varying requirements, different loads of test platforms need to be installed during experiments. Therefore, the load capacity of the servo test turntable must not exceed the design requirements. If the load exceeds the design value, problems such as servo driver alarms and stoppage during rotation may occur, and in extreme cases, it may even lead to structural deformation and damage to the turntable's electrical components.

[0003] The existing overload protection methods for servo test turntables mainly include the following three methods:

[0004] The first approach is to design based on the maximum designed load, aiming for the largest possible load while ensuring all loads remain within the design range. The drawback of this design is the increased size of the turntable, leading to higher design costs and wasted resources.

[0005] The second method involves setting an overload protection mechanism for the servo drive in the servo turntable. When an overload occurs, the servo drive triggers overload protection, stopping the rotation. The drawback of this design is that an overload may cause irreversible damage to the turntable.

[0006] The third method is to weigh the load before each installation. This method can ensure that the installed load is within the design range, but it requires a special weighing instrument to weigh the load repeatedly each time, which is cumbersome and cannot be made intelligent.

[0007] Therefore, there is an urgent need to design a servo test turntable that is easy to use, low in cost, and safe and reliable, so as to meet the requirements of automatic overload protection for servo turntables. Summary of the Invention

[0008] The purpose of this invention is to provide an intelligent overload protection servo test turntable and its working method that is versatile, applicable, simple in structure, easy to implement, low in cost, and easy to debug.

[0009] The technical solution to achieve the purpose of this invention is: an intelligent overload-resistant servo test turntable, including a host computer, a servo control box and a servo turntable;

[0010] The host computer is used for human-computer interaction and issuing control strategies;

[0011] The servo control box is used to receive the control strategy from the host computer, calculate the position signal and load signal of the servo test turntable, control the rotation of the servo test turntable in real time, and upload the real-time position and status information of the servo test turntable.

[0012] The servo turntable is used to receive and execute control commands from the servo control box, and to monitor the position and load information of the servo test turntable in real time, and transmit them to the servo control box.

[0013] Furthermore, the host computer includes an industrial control computer and software, wherein the software includes data communication software, data processing software, and data display software;

[0014] The servo control box includes a power supply, a servo control board, a servo driver, and a signal processing board;

[0015] The servo turntable includes a servo motor, a reducer, an encoder, a limit switch, a turntable base, bearings, a support frame, and a weighing sensor.

[0016] Furthermore, the data communication software is used for network information interaction between the host computer and the servo control board to realize the sending and receiving of communication data. The data sending is the distribution of control strategies to the host computer, and the data receiving is the receiving of information uploaded by the servo control box.

[0017] The data processing software is used to process the control commands input by the user and the information uploaded by the servo control box to obtain real-time information and control strategies.

[0018] The data display software is used to display processed information in real time, including location information, status information, and fault information.

[0019] Furthermore, the power supply includes high-voltage and low-voltage power supplies. The high-voltage power supply is used to power the servo driver, and the low-voltage power supply powers the encoder, weighing sensor, and limit switch in the servo control board, signal processing board, and servo turntable.

[0020] The servo control board is the core of the servo control box. It is used to interact with the host computer via the network, calculate the host computer's control logic, and output position, status, and weighing information to the host computer; it communicates with the servo driver via CAN to drive the servo driver for closed-loop control; it communicates with the signal processing board via serial port to obtain the turntable load information and make corresponding logical judgments; it calculates the encoder information in the servo turntable to obtain the real-time position of the turntable; and it calculates the limit switch information in the servo turntable to provide limit protection for the servo turntable.

[0021] The signal processing board is used to calculate the information of the weighing sensor installed on the turntable and upload the real-time load information to the servo control board.

[0022] The servo driver is used to receive commands from the servo control board and drive the servo motor to rotate.

[0023] Furthermore, the software flow of the servo control board is as follows:

[0024] (1) Solve the encoder position data;

[0025] (2) Receive load data from the serial port of the signal processing board;

[0026] (3) Receive instructions sent by the host computer;

[0027] (4) Based on the logic of load, limit switch, and fault information, determine whether the rotation requirements are met;

[0028] (5) If the requirements are met, a rotation command is sent to the servo driver; if the requirements are not met, the process returns to (3) to receive information.

[0029] (6) Determine whether the specified position has been reached. If it is, stop the process; otherwise, return. (1) Receive encoder information.

[0030] Furthermore, the servo motor and reducer are used to drive the servo turntable to rotate;

[0031] The encoder is used to provide the actual position of the turntable and to provide feedback information for the closed-loop control of the servo system position;

[0032] The limit switches are installed before the left and right mechanical limit switches to provide limit protection for the rotation of the turntable.

[0033] The turntable base is used to mount the carrier under test and rotate the carrier under test to a specified position;

[0034] The bearing and support frame are used to fix the turntable base;

[0035] The weighing sensor is installed at the bottom of the support frame and is used to measure the carrier being tested on the turntable.

[0036] Furthermore, the weighing sensor is a strain gauge sensor, and there are four of them, which are installed at the four opposite corners of the turntable surface to measure the carrier being measured on the turntable.

[0037] A method for operating the intelligent overload protection servo test turntable as described above includes the following steps:

[0038] The servo control box receives the control strategy from the host computer, calculates the position signal and load signal of the servo test turntable, controls the rotation of the servo test turntable in real time, and uploads the real-time position and status information of the servo test turntable.

[0039] The servo turntable receives and executes the control commands from the servo control box, and monitors the position and load information of the servo test turntable in real time, transmitting the information to the servo control box.

[0040] Compared with the prior art, the significant advantages of this invention are: (1) It combines weighing technology with servo technology to realize the intelligent overload protection function of the servo turntable, which improves the convenience of using the servo test turntable; (2) It has the function of setting the load threshold and displaying the load in real time, which improves the safety and reliability of the servo test turntable; (3) It has a simple structure, low production cost, good versatility and strong applicability. Attached Figure Description

[0041] Figure 1 This is a structural block diagram of an intelligent overload-resistant servo test turntable according to the present invention.

[0042] Figure 2 This is a schematic diagram of the structure of the intelligent overload protection servo test turntable provided in this embodiment of the invention.

[0043] Figure 3 This is a software interface diagram of the host computer in an embodiment of the present invention.

[0044] Figure 4 This is a software flowchart of the servo control board in an embodiment of the present invention. Detailed Implementation

[0045] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0046] like Figure 1 , Figure 2 As shown, the present invention provides an intelligent overload-resistant servo test turntable, comprising a host computer, a servo control box, and a servo turntable;

[0047] The host computer is used for human-computer interaction and issuing control strategies;

[0048] The servo control box is used to receive the control strategy from the host computer, calculate the position signal and load signal of the servo test turntable, control the rotation of the servo test turntable in real time, and upload the real-time position and status information of the servo test turntable.

[0049] The servo turntable is used to receive and execute control commands from the servo control box, and to monitor the position and load information of the servo test turntable in real time, and transmit them to the servo control box.

[0050] As a specific example, the host computer includes an industrial control computer and software, wherein the software includes data communication software, data processing software, and data display software, and the software interface is as follows: Figure 3 As shown;

[0051] The servo control box includes a power supply, a servo control board, a servo driver, and a signal processing board;

[0052] The servo turntable includes a servo motor, a reducer, an encoder, a limit switch, a turntable base, bearings, a support frame, and a weighing sensor.

[0053] As a specific example, the data communication software is used for network information interaction between the host computer and the servo control board to realize the sending and receiving of communication data. The data sending is the distribution of control strategies to the host computer, and the data receiving is the receiving of information uploaded by the servo control box.

[0054] The data processing software is used to process the control commands input by the user and the information uploaded by the servo control box to obtain real-time information and control strategies.

[0055] The data display software is used to display processed information in real time, including location information, status information, and fault information.

[0056] As a specific example, the power supply includes high-voltage and low-voltage power supplies. The high-voltage power supply is used to power the servo driver, and the low-voltage power supply powers the encoder, weighing sensor, and limit switch in the servo control board, signal processing board, and servo turntable.

[0057] The servo control board is the core of the servo control box. It is used to interact with the host computer via the network, calculate the host computer's control logic, and output position, status, and weighing information to the host computer; it communicates with the servo driver via CAN to drive the servo driver for closed-loop control; it communicates with the signal processing board via serial port to obtain the turntable load information and make corresponding logical judgments; it calculates the encoder information in the servo turntable to obtain the real-time position of the turntable; and it calculates the limit switch information in the servo turntable to provide limit protection for the servo turntable.

[0058] The signal processing board is used to calculate the information of the weighing sensor installed on the turntable and upload the real-time load information to the servo control board.

[0059] The servo driver is used to receive commands from the servo control board and drive the servo motor to rotate.

[0060] As a specific example, the software flow of the servo control board is as follows: Figure 4 As shown, the details are as follows:

[0061] (1) Solve the encoder position data;

[0062] (2) Receive load data from the serial port of the signal processing board;

[0063] (3) Receive instructions sent by the host computer;

[0064] (4) Based on the logic of load, limit switch, and fault information, determine whether the rotation requirements are met;

[0065] (5) If the requirements are met, a rotation command is sent to the servo driver; if the requirements are not met, the process returns to (3) to receive information.

[0066] (6) Determine whether the specified position has been reached. If it is, stop the process; otherwise, return. (1) Receive encoder information.

[0067] As a specific example, the servo motor and reducer are used to drive the servo turntable to rotate;

[0068] The encoder is used to provide the actual position of the turntable and to provide feedback information for the closed-loop control of the servo system position;

[0069] The limit switches are installed before the left and right mechanical limit switches to provide limit protection for the rotation of the turntable.

[0070] The turntable base is used to mount the carrier under test and rotate the carrier under test to a specified position;

[0071] The bearing and support frame are used to fix the turntable base;

[0072] The weighing sensor is installed at the bottom of the support frame and is used to measure the carrier being tested on the turntable.

[0073] As a specific example, the weighing sensor is a strain gauge sensor, and there are four of them, which are installed at the four opposite corners of the turntable surface to measure the carrier being measured on the turntable.

[0074] In one embodiment, the present invention also provides a method for operating the intelligent overload protection servo test turntable as described above, comprising the following steps:

[0075] The servo control box receives the control strategy from the host computer, calculates the position signal and load signal of the servo test turntable, controls the rotation of the servo test turntable in real time, and uploads the real-time position and status information of the servo test turntable.

[0076] The servo turntable receives and executes the control commands from the servo control box, and monitors the position and load information of the servo test turntable in real time, transmitting the information to the servo control box.

[0077] The above are merely preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. An intelligent anti-overload servo test turntable, characterized in that, The servo control box and the servo turntable are connected to the host computer. The host computer is used for human-computer interaction and issuing control strategies. The servo control box is used for receiving the control strategies of the host computer, calculating the position signal and load weight signal of the servo test turntable, controlling the servo test turntable to rotate in real time, and uploading the real-time position and state information of the servo test turntable. The servo test turntable is used for receiving and executing the control instructions of the servo control box, and monitoring the position information and load weight information of the servo test turntable in real time, and transmitting them to the servo control box.

2. The intelligent anti-overload servo test turntable of claim 1, wherein, The host computer comprises an industrial computer and software, wherein the software comprises data communication software, data processing software and data display software. The servo control box comprises a power supply, a servo control board, a servo driver and a signal processing board. The servo test turntable comprises a servo motor, a speed reducer, an encoder, a limit switch, a turntable base, a bearing, a support frame and a weighing sensor.

3. The intelligent anti-overload servo test turntable according to claim 2, wherein, The data communication software is used for network information interaction between the host computer and the servo control board, and realizes communication data sending and receiving. The data processing software is used for processing the control instructions input by the user and the information uploaded by the servo control box, and obtaining real-time information and control strategies. The data display software is used for displaying the processed information in real time, including position information, state information and fault information.

4. The intelligent anti-overload servo test turntable of claim 2, wherein, The power supply comprises a strong power supply and a weak power supply. The servo control board is the core of the servo control box, and is used for information interaction with the host computer through a network, calculating the control logic of the host computer, outputting position, state and weighing information to the host computer, communicating with the servo driver through CAN to drive the servo driver to perform closed-loop control, communicating with the signal processing board through a serial port to obtain turntable load information and give corresponding logical judgment, calculating the information of the encoder in the servo test turntable to obtain the real-time position of the turntable, and calculating the information of the limit switch in the servo test turntable to protect the servo test turntable. The signal processing board is used for calculating the information of the weighing sensor installed on the turntable and uploading real-time load information to the servo control board. The servo driver is used for receiving the commands of the servo control board and driving the servo motor to rotate.

5. The intelligent anti-overload servo test turntable of claim 4, wherein, The software flow of the servo control board is as follows: (1) calculating the position data of the encoder; (2) receiving the load data of the signal processing board serial port; (3) receiving the instructions sent by the host computer; (4) judging whether the rotation requirement is met according to the logic of the load, the limit switch and the fault information; (5) if the requirement is met, sending the rotation instruction to the servo driver; if the requirement is not met, returning to (3) to receive information; (6) judging whether the specified position is reached, if yes, stopping the flow; if no, returning to (1) to receive the encoder information.

6. The intelligent anti-overload servo test turntable of claim 2, wherein, The servo motor and the speed reducer are used for driving the servo test turntable to rotate. The encoder is used to provide the position of the rotating platform, and provide feedback information for the closed-loop control of the servo system position; The limit switch is installed before the left and right mechanical limit, and is used for the limit protection of the rotating platform; The rotating platform base is used for installing the measured carrier, and rotating the measured carrier to a specified position; The bearing and support frame are used for fixing the rotating platform base; The weighing sensor is installed at the bottom of the support frame, and is used for measuring the measured carrier on the rotating platform.

7. The intelligent anti-overload servo test turntable according to claim 6, wherein, The weighing sensor adopts a strain sensor, and the number is 4. The four strain sensors are installed at four opposite corners of the surface of the rotating platform, and are used for measuring the measured carrier on the rotating platform.

8. The working method of the intelligent anti-overload servo test turntable according to any one of claims 1-7, characterized in that, The method comprises the following steps: The servo control box receives the control strategy of the upper computer, calculates the position signal and load weight signal of the servo test rotating platform, controls the rotation of the servo test rotating platform in real time, and uploads the real-time position and state information of the servo test rotating platform. The servo rotating platform receives and executes the control instruction of the servo control box, and monitors the position information and load weight information of the servo test rotating platform in real time, and transmits them to the servo control box.

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