Potentiometer magnetic coding hybrid outer rotor brushless steering engine

Abstract

According to the potentiometer and magnetic coding hybrid outer rotor brushless steering engine provided by the utility model, the rotating speed of the brushless motor is acquired and the position of the rotor is confirmed through the magnetic coding sensor and the magnetic block, the angle change information of the output shaft of the gear set is acquired by combining the potentiometer, and the position of the rotor is determined through analysis and calculation. According to the steering engine, the rotating speed output of the output shaft of the gear set is controlled with higher precision, the performance of the steering engine is better, meanwhile, rotation of the brushless motor can be controlled more precisely, the possibility of damage to the brushless motor is reduced, the overall service life of the steering engine is prolonged, and the use cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of steering gears, in particular to a potentiometer magnetic encoding hybrid outer rotor brushless steering gear. Background Art

[0002] Servo is widely used in remote control models, robots or industrial control and other fields. The servo precisely controls the motor rotation speed through the internal encoder, indirectly controls the motor to drive the precision gear set, and thus achieves high-precision output. In addition, the servo is simple to control and has a fast response speed. Therefore, the servo is particularly suitable for use in the field of high-precision control.

[0003] In the existing technology, most servos are driven by brushless motors. Brushless motors have a long life and higher control accuracy. However, there are still some disadvantages in the current technology for controlling servo output. In terms of servo output control accuracy, it is impossible to directly use a brushless motor to accurately control the output rotation of the gear set. Since when the brushless motor drives the gear set to rotate, the final output speed of the gear set is inversely proportional to the speed of the brushless motor. It is also difficult to achieve precise output control of the gear set by the brushless motor by detecting the speed or rotation angle of the gear set. Therefore, a more reasonable servo structure is urgently needed to solve the above-mentioned technical problems. Utility Model Content

[0004] In view of the deficiency in the above-mentioned technology that the output of the gear set cannot be accurately controlled, the utility model provides a potentiometer magnetic encoding hybrid outer rotor brushless servo.

[0005] To achieve the above-mentioned purpose, the utility model provides a potentiometer magnetically encoded hybrid outer rotor brushless servo, comprising a shell with a central cavity structure; a brushless motor, a gear set and a first main control board are arranged in the shell, the brushless motor is formed with a first end and a second end, the first end is fixedly connected to the gear set, the second end is provided with a magnetic block and a magnetic encoding sensor, the second end is fixedly connected to the magnetic block, and the magnetic encoding sensor is arranged on the first main control board; it also includes a potentiometer, the potentiometer is electrically connected to the first main control board, the gear set includes a gear set output shaft, one end of the gear set output shaft protrudes out of the shell, and the other end is rotatably connected to the potentiometer.

[0006] As an improved solution of the present invention, the magnetic block is a radially magnetized magnet, and the magnetic poles of the magnetic block are distributed along the radial direction of the magnetic block.

[0007] As an improved solution of the present invention, the magnetic block and the magnetic encoding sensor are spaced apart and their centers are aligned.

[0008] As an improved solution of the present invention, it also includes a second main control board, which is electrically connected to the first main control board. The potentiometer is fixedly arranged on the second main control board and electrically connected to the second main control board. The second main control board is provided with a connecting through hole, and the output shaft of the gear set is connected to the potentiometer through the connecting through hole.

[0009] As an improved solution of the present invention, a side of the connecting shell close to the upper shell is provided with a mounting groove adapted for the brushless motor and the potentiometer, and a through hole for passing the output shaft of the gear set is provided at the bottom of the mounting groove.

[0010] As an improved solution of the present invention, the distance between the magnetic block and the magnetic encoding sensor is between 0.4 mm and 0.6 mm.

[0011] The beneficial effects of the present invention are as follows: compared with the prior art, the present invention provides a potentiometer magnetic encoding hybrid outer rotor brushless servo, which collects the speed of the brushless motor and confirms the rotor position through the magnetic encoding sensor and the magnetic block, combines the angle change information of the gear group output shaft collected by the potentiometer, and analyzes and calculates through the main control board to achieve higher precision control of the speed output of the gear group output shaft, so that the performance of the servo is better, and at the same time can more accurately control the rotation of the brushless motor, reduce the probability of damage to the brushless motor, extend the overall service life of the servo, and reduce the cost of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Fig. 1 This is the internal structure diagram of the utility model;

[0013] Fig. 2 It is a cross-sectional view of the utility model;

[0014] Fig. 3 It is a three-dimensional diagram of the present utility model.

[0015] The main component symbols are described as follows:

[0016] 1. Housing; 2. Brushless motor; 21. Output shaft; 3. Gear set; 31. Gear set output shaft; 4. First main control board; 5. Magnetic block; 6. Magnetic encoding sensor; 7. Potentiometer; 8. Second main control board; 9. Installation. DETAILED DESCRIPTION

[0017] In order to more clearly illustrate the present invention, the present invention will be further described below with reference to the accompanying drawings.

[0018] In the following description, the example details are given in order to provide a more thorough understanding of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. It should be understood that the specific embodiments are only used to explain the present application, and are not used to limit the present application.

[0019] It should be understood that when the terms "comprise" and / or "include" are used in the specification, it means that the features, integers, steps, operations, elements, or components described in the specification exist, but do not exclude one or more other features, integers, steps, operations, elements, components, or combinations thereof.

[0020] In the prior art, most of the rudders are driven by brushless motors, and the brushless motor has a long service life and higher control accuracy. However, there are still some disadvantages in the current control of the rudder output. The output rotation of the gear set cannot be directly and accurately controlled by the brushless motor. Since the rotation speed of the gear set is inversely proportional to the rotation speed of the brushless motor when the brushless motor drives the gear set to rotate, it is difficult to achieve accurate output control of the brushless motor on the gear set by detecting the rotation speed or rotation angle of the gear set. Therefore, a more reasonable rudder structure is needed to solve the above technical problems.

[0021] In order to solve the above technical problems, please refer to Figs. 1-3 The utility model discloses a potentiometer 7 magnetic encoding hybrid outer rotor brushless rudder, including the shell 1 with the middle cavity structure, the shell 1 is equipped with brushless motor 2, gear set 3 and first main control board 4, and the first end and the second end of brushless motor 2 are formed, and the first end is fixedly connected with gear set 3, and the second end is equipped with magnetic block 5 and magnetic encoding sensor 6, and magnetic block 5 is fixedly connected with the second end, and magnetic encoding sensor 6 is arranged on first main control board 4, it also includes potentiometer 7, and potentiometer 7 is electrically connected with first main control board 4, and gear set 3 includes gear set output shaft 31, and one end of gear set output shaft 31 projects on the shell 1, and the other end is rotatably connected with potentiometer 7, because in the prior art, the output size of the rotation speed of gear set 3 cannot be directly and accurately controlled by potentiometer 7, therefore, magnetic block 5 is arranged on the output shaft 21 of brushless motor 2, and magnetic encoding sensor 6 for collecting the rotation speed of magnetic block 5 and the rotor position of brushless motor 2 is arranged, after magnetic encoding sensor 6 collects the rotation speed of magnetic block 5, the rotation angle of gear set output shaft 31 is detected in combination with potentiometer 7, to adjust the rotation speed of brushless motor 2, and then indirectly and accurately adjust the rotation speed of gear set output shaft 31, so that the performance of the rudder is better, and since the rotation of brushless motor 2 can be more accurately regulated, the possibility of damage of brushless motor 2 is reduced, the overall service life of the rudder is prolonged, and the use cost is reduced.

[0022] The working principle of the utility model is:

[0023] The brushless motor 2 output shaft 21 is connected with the precise gear set 3 at one end, and is fixedly connected with the magnetic block 5 at the other end. The magnetic block 5 is spaced apart from and centrally aligned with the magnetic encoding sensor 6. When started, the brushless motor 2 drives the magnetic block 5 to rotate at high speed, and the magnetic encoding sensor 6 detects the rotating speed of the magnetic block 5 and transmits it to the first main control board 4. Meanwhile, the potentiometer 7 is connected with the gear set output shaft 31, and the potentiometer 7 collects the rotating speed of the gear set output shaft 31 and feeds it back to the first main control board 4. The first main control board 4 combines the rotating speed of the magnetic block 5 with the rotating angle of the gear set output shaft 31 to obtain the power conversion ratio, and then calculates and controls the rotating speed of the brushless motor 2, thereby indirectly and accurately controlling the rotating angle of the gear set output shaft 31.

[0024] In the embodiment, the magnetic block 5 is a diametrically magnetized magnet, and the magnetic poles of the magnetic block 5 are distributed along the radial direction of the magnetic block 5. The diametrically magnetized magnetic block 5 has a sufficiently uniform magnetic field, which improves the accuracy of detection by the magnetic encoding sensor 6. The magnetic block 5 is spaced apart from and centrally aligned with the magnetic encoding sensor 6, and the distance between the magnetic block 5 and the magnetic encoding sensor 6 is between 0.4mm and 0.6mm, which further ensures the accuracy of the magnetic block 5 rotating speed collected by the magnetic encoding sensor 6. The magnetic block 5 is made of neodymium iron boron strong magnetic material, and generates an alternating sinusoidal magnetic field after rotation. The position of the rotor of the brushless motor 2 is determined by the magnetic encoding sensor, and the gear set 3 is driven by the brushless motor 2, so that the gear set output shaft 31 can effectively rotate. During the rotation of the gear set output shaft 31, part of the structure in the potentiometer 7 connected with the gear set output shaft 31 is moved, so that the angle change information of the gear set output shaft 31 is calculated according to the relevant potential change, and the rotating speed of the brushless motor 2 collected by the magnetic encoding sensor 6 is combined, thereby further improving the accuracy of the rotation of the gear set output shaft 31.

[0025] In the embodiment, the second main control board 8 is also included, which is electrically connected with the first main control board 4. The potentiometer 7 is fixedly arranged on the second main control board 8 and is electrically connected with the second main control board 8. The second main control board 8 is provided with a connecting through hole, and the gear set output shaft 31 is connected with the potentiometer 7 through the connecting through hole. The first main control board 4 can read the information of the potentiometer collected by the second main control board 8, combine it with the motor data, and achieve more accurate control accuracy according to the conversion ratio between the motor and the gear set output shaft 31. The side of the housing 1 close to the gear set 3 is provided with a mounting groove plate adapted to the brushless motor 2 and the potentiometer 7. The groove bottom of the mounting groove plate is provided with a second connecting through hole for passing through the gear set output shaft 31. In order to ensure that the potentiometer 7 can be stably assembled, the potentiometer 7 is mounted on the second main control board 8, and the potentiometer and the brushless motor are embedded in the mounting groove plate to prevent dislocation during work and damage to the steering engine.

[0026] The advantages of this utility model are:

[0027] 1) The magnetic encoder sensor and magnetic block are used to collect the speed of the brushless motor and confirm the rotor position. Combined with the potentiometer to collect the angle change information of the gear group output shaft, through analysis and calculation, a higher precision speed output of the gear group output shaft is achieved, which improves the overall performance and service life of the servo and reduces the cost of use.

[0028] The above disclosures are only a few specific embodiments of the present invention, but the present invention is not limited thereto. Any changes that can be conceived by those skilled in the art should fall within the scope of protection of the present invention.

Claims

1. A potentiometer magnetic encoding hybrid outer rotor brushless servo, characterized in that: It includes a shell with a central cavity structure; a brushless motor, a gear set and a first main control board are arranged in the shell, the brushless motor is formed with a first end and a second end, the first end is fixedly connected to the gear set, the second end is provided with a magnetic block and a magnetic encoding sensor, the second end is fixedly connected to the magnetic block, and the magnetic encoding sensor is arranged on the first main control board; it also includes a potentiometer, the potentiometer is electrically connected to the first main control board, the gear set includes a gear set output shaft, one end of the gear set output shaft protrudes from the shell, and the other end is rotatably connected to the potentiometer.

2. The potentiometer magnetic encoding hybrid outer rotor brushless steering gear according to claim 1, characterized in that: The magnetic block is a radially magnetized magnet, and the magnetic poles of the magnetic block are distributed along the radial direction of the magnetic block.

3. The potentiometer magnetic encoding hybrid outer rotor brushless steering gear according to claim 1, characterized in that: The magnetic block and the magnetic encoding sensor are spaced apart and aligned in center.

4. The potentiometer magnetic encoding hybrid outer rotor brushless steering gear according to claim 1, characterized in that: It also includes a second main control board, which is electrically connected to the first main control board. The potentiometer is fixedly arranged on the second main control board and is electrically connected to the second main control board. A connecting through hole is provided on the second main control board, and the output shaft of the gear set is connected to the potentiometer through the connecting through hole.

5. The potentiometer magnetic encoding hybrid outer rotor brushless steering gear according to claim 4, characterized in that: A mounting slot plate adapted to the brushless motor and the second main control board is provided on one side of the housing close to the first main control board, and a through hole for passing the output shaft of the gear set is provided at the bottom of the mounting slot.

6. The potentiometer magnetic encoding hybrid outer rotor brushless steering gear according to claim 1, characterized in that: The distance between the magnetic block and the magnetic encoding sensor is between 0.4 mm and 0.6 mm.

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