Novel rotating device

Abstract

According to the novel rotating device, a DSP + FPGA + DAC control mode is adopted for system hardware, a servo motor + speed reducer direct drive mode is adopted, a man-machine interaction interface-display control device is arranged, and the display control device is used for system control and data display and has the functions of a position mode and a rate mode. Output torque of the servo motor is decelerated and increased through the speed reducer and then transmitted to the rotating shaft through the coupler, the rotating shaft rotates to drive a load installed on the installation base to move, and system control is flexible and convenient. The system is provided with an emergency stop button, when the system does not work or an emergency occurs, the stop button is pressed down, the rotating mechanism stops running, and the safety of the system is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of motors, and in particular to a novel rotating device. Background Art

[0002] At present, most of the existing rotating devices in China use a multi-stage deceleration and torque increase control method to control the movement of the object under test, provide the object with rotation speed and acceleration, and drive the test platform to run by controlling the motor to drive the multi-stage deceleration mechanism. They are mostly used in industrial control and testing occasions. The disadvantages are complex structure, low torque transmission efficiency, complex control process, low control accuracy, and low control response speed. Summary of the invention

[0003] In view of the characteristics of existing rotating devices, the present invention provides a new type of rotating device, which adopts a servo motor + reducer direct drive control mode. The output torque of the servo motor is decelerated and increased by the reducer and then transmitted to the rotating shaft through the coupling. The rotation of the rotating shaft drives the load installed on the mounting seat to move, and the system control is flexible and convenient. This motor direct drive mode can simplify the system control structure and control logic and improve the system reliability. A human-computer interaction interface-display and control device is provided. The display and control device is used for system control and data display, and has position mode and rate mode functions. The absolute encoder ECN225 is selected, which has high precision and ensures the system acquisition and control accuracy.

[0004] The technical solution adopted to achieve the above purpose is a new type of rotating device, which is mainly composed of a box and a rotating platform, wherein the control box is composed of a box, a handle, a display screen, an indicator light, a function button, a fan, an interface, a switching power supply, a motor driver, a measurement and control board, and a filter, and the rotating platform is composed of a base, an encoder, a motor, a reducer, a coupling, and a mounting seat. The measurement and control board is the control core of the present invention, and its hardware framework is DSP+FPGA+DAC. The main control chip DSP adopts TMS320F28335 with floating-point operation, and its main frequency reaches 150M. The execution speed is 50% faster than the F28xx series fixed-point chip with the same clock frequency, and the processing mathematical operation performance is improved by 2.45 times, the control algorithm performance is improved by 1.57 times, the DSP performance is improved by 1.38 times, and the overall performance is improved by nearly 2 times. The data acquisition chip FPGA adopts XCS500E produced by XILIN Company, and its system gate reaches 500K, with up to 172 user IOs. The DAC uses a 16-bit parallel data bus chip DAC7744, which has a power consumption as low as 200mW, a data conversion time of 10us, and a resolution of 152uV, which can achieve fine control of the motor.

[0005] The system is equipped with comprehensive self-protection, such as undervoltage protection, overvoltage protection, current limiting protection, motor leakage protection, over-temperature protection, overload protection (alarm), control error protection, software limit protection, etc.

[0006] Compared with the prior art, the present invention has the following advantages.

[0007] 1) A new type of rotating device to achieve the lifting and lowering of loads such as center-fed antennas, and to calibrate and perform functional tests on small inertial devices; 2) A novel rotating device that can provide vertical velocity and acceleration to the load; 3) A new type of rotation device with high precision, position accuracy of ±10″, rate resolution of 0.01° / s, and maximum angular acceleration of 50° / s2; 4) A new type of rotating device with simple installation method, which directly mounts the load on the mounting seat of the table; 5) A new type of rotating device, which directly drives the shaft through the servo motor after deceleration and torque increase through the reducer, thereby driving the mounting seat and the load on the mounting seat to operate, and the control process is simple; 6) A new type of rotating device is provided with an RS232 interface to meet the user's needs for data interaction with external devices when using the rotating device. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0009] Figure 1 This is a diagram of the front panel of the control box of the present invention.

[0010] Figure 2 This is a diagram of the rear panel of the control box of the present invention.

[0011] Figure 3 This is a diagram of the control box bottom plate of the present invention.

[0012] Figure 4 It is a diagram of the rotating table of the present invention. DETAILED DESCRIPTION

[0013] The present invention will be further described below in conjunction with the accompanying drawings.

[0014] like Figure 1-Figure 4 As shown, a novel rotating device includes a control box and a rotating platform 2, wherein the control box is composed of a box 1, a handle 3, a display screen 4, an indicator light 5, a function button 6, a fan 7, an electrical interface 8, a switch power supply 9, a motor driver 10, a measurement and control board 11, and a filter 12. The rotating platform 2 is composed of a base 13, an encoder 14, a servo motor 15, a reducer 16, a coupling 17, and a mounting seat 18.

[0015] The control board is the control core of the present invention, and its hardware framework is DSP+FPGA+DAC. The main control chip DSP adopts TMS320F28335 with floating point operation, and its main frequency reaches 150M, and its processing mathematical operation performance is high. The data acquisition chip FPGA adopts XCS500E produced by XILIN Company, and its system gate reaches 500K, and it has up to 172 user IO ports. DAC adopts 16-bit parallel data bus chip DAC7744, and its power consumption is as low as 200mW, data conversion time is 10us, and resolution is 152uV, which can realize fine control of the motor.

[0016] The control board controls the driver to control the operation of the servo motor. The output torque of the servo motor is decelerated by the reducer and then transmitted to the shaft through the coupling. The rotation of the shaft drives the load installed on the mounting seat to move. The absolute encoder ECN225 is installed at the rear end of the motor. It has high precision and provides information such as the position, speed, acceleration, etc. of the mounting seat, ensuring the accuracy of system acquisition and control. The system is equipped with an RS232 interface to meet the user's needs for data interaction with external devices when using the rotating device.

[0017] How it works The servo motor + reducer direct drive control mode is adopted. The measurement and control board controls the motor driver to control the motor operation. The output torque of the servo motor is decelerated by the reducer and then transmitted to the shaft through the coupling. The rotation of the shaft drives the load installed on the mounting seat to move. The system control is flexible and convenient. This motor direct drive method can simplify the system control structure and control logic and improve the system reliability. It is equipped with a human-computer interaction interface-display and control device. The display and control device is used for system control and data display. After the system is powered on, the required position and speed values ​​are set here, and the motor rotation is started. The motor can rotate according to the position mode and speed mode. The absolute encoder ECN225 is selected to feed back information such as position, speed, acceleration, etc. to the measurement and control board. The encoder has high precision and ensures the accuracy of system acquisition and control.

[0018] The system is equipped with comprehensive self-protection, such as undervoltage protection, overvoltage protection, current limiting protection, motor leakage protection, over-temperature protection, overload protection (alarm), control error protection, software limit protection, etc. At the same time, the system is equipped with an emergency stop button to improve the safety performance of the system.

[0019] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A novel rotating device, characterized in that: The invention comprises a control box and a rotating platform (2), wherein the control box comprises a box (1), a handle (3), a display screen (4), an indicator light (5), a function button (6), a fan (7), an electrical interface (8), a switching power supply (9), a motor driver (10), a measurement and control board (11), and a filter (12), and the rotating platform (2) comprises a base (13), an encoder (14), a servo motor (15), a reducer (16), a coupling (17), and a mounting seat (18).

2. A novel rotating device according to claim 1, characterized in that: Modern electronic technology and sensor technology are used to realize the raising and lowering of the center-fed antenna and to calibrate and perform functional tests on small inertial devices.

3. According to claim 1, a novel rotating device is characterized in that: The position, angle and angular velocity signals can be output in real time according to the setting requirements.

4. According to claim 1, a novel rotating device is characterized in that: Position accuracy is ±10″, rate resolution is 0.01° / s, and maximum angular acceleration is 50° / s2.

5. According to claim 1, the novel rotating device is characterized in that: Driven load weight ≤ 10 kg.

6. A novel rotating device according to claim 1, characterized in that: The installation method is simple, and the device under test is directly installed on the mounting base.

7. A novel rotating device according to claim 1, characterized in that: The main shaft is directly driven by a servo motor, thereby driving the mounting seat and the load on the mounting seat, which is convenient for control.

8. According to claim 1, a novel rotating device is characterized in that: A display screen is provided to enhance the human-computer interaction and can display the position and speed information of the rotating device in real time.

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