Two-channel servo steering engine driver capable of efficiently utilizing space

Abstract

The utility model discloses a two-channel servo steering engine driver capable of efficiently utilizing space, which relates to the technical field of driver space layout structures and comprises a power supply and communication board, a board-to-board connection pin header and a driving control board. The power supply is connected with the communication board and the driving control board through board-to-board connecting pin headers, and limiting holes meshed with the board-to-board connecting pin headers are formed in the power supply, the communication board and the driving control board. According to the utility model, the vertical space of the circuit board is utilized, circuit elements are distributed on a plurality of layers, the area of the circuit board is obviously reduced, the structural layout is compact, and each element on the circuit board can play a maximum role in a limited space, so that the design of a high-density servo steering engine driver is realized, and the design cost is reduced. And compared with a steering engine driver with the same function performance, the space utilization rate is greatly improved, and the structure is compact.

Description

Technical Field

[0001] The utility model relates to the technical field of driver space layout structure, in particular to a dual-channel servo steering engine driver with efficient space utilization. Background Art

[0002] As one of the core components of a servo, the servo driver is often composed of multiple circuit modules. The way each module is built determines the size of the entire servo driver, and to a large extent determines the size and performance of the servo.

[0003] Traditional servo actuators build their individual circuit modules onto a single PCB, with the overall layout arranged horizontally or vertically. In this configuration, the uneven shapes of some electronic components and the complex electrical wiring requirements take up excessive horizontal and vertical space, resulting in excessive servo actuator size. This limits the miniaturization and lightweighting of servos, making it difficult to achieve miniaturization for some drones, robots, and micro-missiles. To address this issue, we offer a space-efficient dual-channel servo actuator driver. Utility Model Content

[0004] 1) Technical problems solved

[0005] The purpose of the utility model is to make up for the deficiencies of the prior art and to provide a dual-channel servo actuator with efficient space utilization.

[0006] 2) Technical solution

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a dual-channel servo actuator driver with efficient space utilization, including a power supply and communication board, a board-to-board connection pin header, and a drive control board. The side walls at both ends of the power supply and communication board and the drive control board are provided with semicircular notches. The power supply and communication board and the drive control board are connected through the board-to-board connection pin header. The power supply and communication board and the drive control board are both provided with limit holes that engage with the board-to-board connection pin header.

[0008] Furthermore, one end of the drive control board is fixedly connected to a DC-DC power supply step-down module, and the DC-DC power supply step-down module is fixedly connected to the drive control board through pins.

[0009] Furthermore, an RS422 communication circuit module is fixedly connected to the end face of the drive control board away from the DC-DC power supply step-down module. The RS422 communication circuit module is fixedly connected to the drive control board through pins. The drive control board is provided with an external control interface pad on the end face of the RS422 communication circuit module.

[0010] Furthermore, the semicircular notches of the drive control board, power supply and communication board are all fixedly connected with wiring pads, and the wiring pads are arranged in an arc shape.

[0011] Furthermore, the power supply and communication board is fixedly connected to one end thereof close to the drive control board with a main control MCU module, and the main control MCU module is arranged at the center of the power supply and communication board.

[0012] Furthermore, the power supply and communication board are connected to two three-phase motor inverter output modules in an array at one end away from the drive control board.

[0013] Furthermore, the power supply and communication board and the drive control board are all fixedly connected with a PCB fixing flange at one end away from the semicircular notch 4.

[0014] 3) Beneficial effects:

[0015] Compared with the existing technology, this space-efficient dual-channel servo actuator has the following beneficial effects:

[0016] 1. The present invention utilizes the vertical space of the circuit board to distribute circuit elements on multiple levels, significantly reducing the area of ​​the circuit board. The structural layout is compact, allowing each component on the circuit board to play its maximum role within the limited space, thereby realizing a high-density servo actuator design. Compared with actuators with the same functional performance, the space utilization rate is greatly improved, solving the problem that existing electronic components occupy too much horizontal and vertical space due to their uneven appearance and complex electrical wiring requirements, thus limiting the development of miniaturization and lightweight of actuators. The utility model has the advantage of compact structure.

[0017] Second, this invention reduces the use of PCB boards by 40%, thus reducing weight. The compact layout not only saves space but also reduces the weight of the driver. Designed for servo actuators with lower power consumption, this device reduces power consumption and energy consumption while ensuring functionality and performance, thereby improving energy efficiency. Compared with two-channel servo actuators of the same size and space, it has the advantage of cost savings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is the positive triaxial drawing of the utility model;

[0019] Figure 2 This is a schematic diagram of the board-to-board connection pin header of the utility model;

[0020] Figure 3 This is a schematic diagram of the DC-DC power supply step-down module of the utility model;

[0021] Figure 4 This is a schematic diagram of the external control interface pad of the utility model;

[0022] Figure 5 This is a schematic diagram of the drive control panel of the utility model;

[0023] Figure 6 This is a schematic diagram of the wiring pad of the utility model;

[0024] Figure 7 This is a schematic diagram of the PCB fixing flange of the utility model;

[0025] Figure 8 This is a schematic diagram of the power supply and communication board of the utility model.

[0026] In the figure: 1. Power and communication board; 2. Board-to-board connection pin header; 3. Drive control board; 4. Semicircular notch; 5. DC-DC power step-down module; 6. RS422 communication circuit module; 7. External control interface pad; 8. Wiring pad; 9. Main control MCU module; 10. Three-phase motor inverter output module; 11. PCB fixing flange. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] like Figure 1-8 As shown, the utility model provides a technical solution: a dual-channel servo actuator driver with efficient space utilization, including a power supply and communication board 1, a board-to-board connection pin header 2, and a drive control board 3. Semicircular notches 4 are provided on the side walls at both ends of the power supply and communication board 1 and the drive control board 3. Two rows of 5*1.27mm board-to-board connection pin headers 2 are used to connect and fix the power supply and communication board 1 and the drive control board 3, ensuring at least 3A overcurrent capability and signal transmission reliability. Limiting holes that engage with the board-to-board connection pin headers 2 are provided inside the power supply and communication board 1 and the drive control board 3. The maximum outer diameter of the power supply and communication board 1 and the drive control board 3 is 2.7cm, the minimum outer diameter is 2.0cm, the board thickness is 1.6mm, and the spacing is 4mm. While the board-to-board connection pin header 2 is used to connect the power supply and communication board 1 and the drive control board 3, serial port data, 3.3V, 5V, and 24V~32V electrical transmission connections are also realized.

[0029] One end of the drive control board 3 is fixedly connected to a DC-DC power supply step-down module 5, which is fixedly connected to the drive control board 3 through pins. The DC-DC power supply step-down module 5 is set to step down the input 24V~32V DC power supply to 5V and 3.3V step by step for use by other modules. The end face of the drive control board 3 away from the DC-DC power supply step-down module 5 is fixedly connected to an RS422 communication circuit module 6, which is fixedly connected to the drive control board 3 through pins. The drive control board 3 is provided with an external control interface soldering pad 7 on the end face of the RS422 communication circuit module 6 at one end. The RS422 communication circuit module 6 converts the serial port data level into a standard RS422 communication level, and reserves an external control interface soldering pad 7 for docking with the flight control to realize the sending and receiving of instructions. External components are soldered through the external control interface soldering pad 7, which is convenient for adding and reducing the functions of the circuit board.

[0030] The semicircular notches 4 of the drive control board 3 and the power supply and communication board 1 are all fixedly connected with wiring pads 8. The wiring pads 8 are arranged in an arc shape. The wiring pads 8 are connected by cable welding to ensure the reliability and stability of the connection between the boards. At the same time, the arrangement of the wiring pads 8 facilitates the connection of motors and sensors. The power supply and communication board 1 is fixedly connected to one end close to the drive control board 3 with a main control MCU module 9. The main control MCU module 9 is arranged at the center of the power supply and communication board 1. The main control MCU module 9 is responsible for collecting and processing the servo angular position signal, storing the electrical zero angle data, outputting the servo control logic and control algorithm, executing the servo drive instructions and feedback the servo position.

[0031] The power supply and communication board 1 is connected to two three-phase motor inverter output modules 10 in an array at one end away from the drive control board 3. The output control signal of the MCU is amplified into the driving voltage of the motor through the three-phase motor inverter output module 10 to drive the motor inverter, and acts on the brushless DC motor to perform corresponding actions, thereby controlling the deflection of the servo output shaft. The power supply and communication board 1 and the drive control board 3 are fixedly connected to a PCB fixing flange 11 at one end away from the semicircular notch 4. The power supply and communication board 1 and the drive control board 3 are fixed by embedding the flange into the mounting groove. This method facilitates the installation of the circuit board.

[0032] Working principle: When the space-efficient dual-channel servo driver is in use, external components are soldered through the external control interface pads 7, the power supply and communication board 1, and the drive control board 3 are limited through the board-to-board connection pins 2, and the wiring pads 8 are connected by cable welding. The power supply and communication board 1, and the drive control board 3 are embedded in the external driver mounting slot through the PCB fixing flange 11 to achieve fixation.

Claims

1. A space-efficient dual-channel servo actuator driver, comprising a power supply and communication board (1), a board-to-board connection pin header (2), and a drive control board (3), characterized in that: Semicircular notches (4) are provided on both end side walls of the power supply and communication board (1) and the drive control board (3). The power supply and communication board (1) and the drive control board (3) are connected via board-to-board connection pins (2). Position limiting holes engaging with the board-to-board connection pins (2) are provided inside the power supply and communication board (1) and the drive control board (3).

2. The space-efficient dual-channel servo actuator according to claim 1, characterized in that: One end of the drive control board (3) is fixedly connected to a DC-DC power supply step-down module (5), and the DC-DC power supply step-down module (5) is fixedly connected to the drive control board (3) via pins.

3. The space-efficient dual-channel servo actuator according to claim 1, characterized in that: An RS422 communication circuit module (6) is fixedly connected to the end face of the drive control board (3) away from the DC-DC power supply step-down module (5). The RS422 communication circuit module (6) is fixedly connected to the drive control board (3) via pins. An external control interface soldering pad (7) is provided on the end face of the drive control board (3) located at one end of the RS422 communication circuit module (6).

4. The space-efficient dual-channel servo actuator according to claim 1, characterized in that: The semicircular notches (4) of the drive control board (3), power supply and communication board (1) are all fixedly connected with wiring pads (8), and the wiring pads (8) are arranged in an arc shape.

5. The space-efficient dual-channel servo actuator according to claim 1, characterized in that: The power supply and communication board (1) is fixedly connected to one end thereof close to the drive control board (3) with a main control MCU module (9), and the main control MCU module (9) is arranged at the center of the power supply and communication board (1).

6. The space-efficient dual-channel servo actuator according to claim 1, characterized in that: The power supply and communication board (1) is connected to two three-phase motor inverter output modules (10) in an array at one end away from the drive control board (3).

7. The space-efficient dual-channel servo actuator according to claim 1, characterized in that: The power supply and communication board (1) and the drive control board (3) are all fixedly connected to a PCB fixing flange (11) at one end away from the semicircular notch (4).

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