Integrated servo roller motor
By designing an integrated servo drum motor, integrating the drive control board and encoder, and using magnetic poles as sensing magnets for the encoding chip, the problems of large space, low accuracy and large external interference in traditional drum equipment design are solved, and higher accuracy and stability are achieved, simplifying installation and maintenance.
Patent Information
- Application Number
- CN202421430938.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-21
- Publication Date
- 2025-06-06
- Estimated Expiration
- 2034-06-21
AI Technical Summary
In traditional roller equipment design, the separation of motor, motor drive and roller leads to a large space occupied, low accuracy and stability, and the separation of the system is easily disturbed by external interference, resulting in inaccurate encoder counting, large cumulative errors, and high maintenance and replacement costs.
An integrated servo drum motor is designed. The servo drum shell has a built-in servo drum shaft, a fixed coil and magnetic pole on the shaft, integrated drive control board and encoder, and electrical connection is achieved through pins. The off-axis magnetic encoding chip uses magnetic poles as sensing magnets to reduce external interference.
It realizes tight integration of various parts of the drum motor, reduces intermediate links, improves accuracy and stability, reduces external interference and cumulative errors, simplifies installation and maintenance, and reduces maintenance costs.
Smart Images
Figure CN222953868U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of roller motors, in particular to an integrated servo roller motor. Background Art
[0002] In many industries, such as logistics transmission, textiles, packaging, printing, etc., rollers are needed to transport, handle and process objects. The traditional roller equipment design usually separates the motor, motor drive and roller, and connects them through chains, gears or belts. This design not only takes up a lot of space, but also has relatively low accuracy and stability due to the large number of intermediate links. In addition, the system is divided into multiple parts, which is extremely inconvenient to install and implement. The connection between the driver and the roller and the driver and the encoder module is easily affected by external interference, resulting in inaccurate encoder counting and cumulative errors. If the equipment fails, the maintenance and replacement costs are high. Therefore, a new integrated servo roller motor design is urgently needed to solve the above problems. Utility Model Content
[0003] The purpose of the utility model is to provide an integrated servo drum motor to solve the problems raised in the above background technology.
[0004] In order to solve the above technical problems, the utility model provides the following technical solutions: an integrated servo drum motor, comprising a servo drum housing and a servo drum shaft located in the inner cavity of the servo drum housing; a magnetic pole is fixed on the inner wall of the servo drum housing, and a coil is fixed on the servo drum shaft;
[0005] A drive control board and an integrated circuit board with an encoder are fixedly connected to the servo roller shaft;
[0006] The drive control board and the integrated circuit board are electrically connected by pins;
[0007] An off-axis magnetic encoding chip is arranged on the integrated circuit board, and the off-axis magnetic encoding chip is arranged toward one side of the magnetic pole.
[0008] Preferably, the interior of the servo roller shaft is hollow for the wire harness to pass through.
[0009] Preferably, 7 pairs of magnetic poles are arranged in a uniform annular array on the inner wall of the servo drum shell.
[0010] Preferably, the drive control board includes a main control chip, an operational amplifier, and an external communication chip.
[0011] Preferably, the integrated circuit board includes a power management chip, an off-axis magnetic encoding chip, a drive MOS chip, and a three-phase current sampling resistor.
[0012] Compared with the prior art, the beneficial effects of the utility model are:
[0013] The drum motor proposed by the utility model integrates an encoder and a drive control board inside, and each part forms a whole, reducing intermediate links, and solving the problems of large occupied space and large external interference caused by the current independence of the motor, encoder and driver.
[0014] The driver adopts a split-board design to improve accuracy and stability, and solves the problem of cumulative error caused by the decomposition and interference of the integrated roller motor encoder.
[0015] In addition, the integrated layout structure can directly use the magnetic poles of the motor as the sensing magnets of the encoding chip without the need for additional magnets. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model. DETAILED DESCRIPTION
[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0018] As shown in the figure, this embodiment provides an integrated servo roller motor. Figure 1 As shown, it includes a servo drum shell 1 and a servo drum shaft 2 located in the inner cavity of the servo drum shell 1; a magnetic pole 3 is fixed on the inner wall of the servo drum shell 1, and a coil 4 is fixed on the servo drum shaft 2;
[0019] The servo roller shaft 2 is fixedly connected with a drive control board 5 and an integrated circuit board 7 with an encoder; the drive control board 5 includes a main control chip, an operational amplifier, and an external communication chip, and the integrated circuit board 7 includes a power management chip, an off-axis magnetic encoding chip 6 (using a commercially available chip with model number VCE27550), a drive MOS chip, and a three-phase current sampling resistor. The drive control board 5 and the integrated circuit board 7 are connected to the signal line through a double-row pin 8, and the middle of the two circuit boards is hollowed out to place the servo roller shaft 2, and is fixed to the servo roller shaft 2 by a retaining spring or structural adhesive on the servo roller shaft 2 according to different usage conditions. The wiring of the circuit board is mainly the power line and two differential signal lines, which are connected through the hollow outlet of the servo roller shaft 2, which is simple and convenient.
[0020] The drive control board 5 and the integrated circuit board 7 are electrically connected by using pins;
[0021] An off-axis magnetic encoding chip 6 is provided on the integrated circuit board 7 for signal calibration. The off-axis magnetic encoding chip 6 is provided toward the side of the magnetic pole 3. The off-axis magnetic encoding chip 6 fits the angle through the magnetic field strength of the X and Y axes on the chip. There are 7 pairs of magnetic poles 3, and the uniform annular array is arranged on the inner wall of the servo drum shell 1. Therefore, there will be 7 Z-axis signals for one rotation. The calibration steps are as follows: power on to find the angle zero point - receive the operation command - wait for 3 Z-axis signals to be received to prevent misjudgment caused by signal interference during startup - record the encoder value at this time - receive the Z-axis signal again - compare the absolute value of the encoder value at this time with the recorded value and the allowable error size - if it is less than the allowable error, perform the calibration operation.
[0022] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. An integrated servo drum motor, characterized in that: It comprises a servo roller shell (1) and a servo roller shaft (2) located in the inner cavity of the servo roller shell (1); a magnetic pole (3) is fixed on the inner wall of the servo roller shell (1), and a coil (4) is fixed on the servo roller shaft (2); A driving control board (5) and an integrated circuit board (7) with an encoder are fixedly connected to the servo roller shaft (2); The drive control board (5) and the integrated circuit board (7) are electrically connected by using pins; An off-axis magnetic encoding chip (6) is arranged on the integrated circuit board (7), and the off-axis magnetic encoding chip (6) is arranged toward one side of the magnetic pole (3).
2. The integrated servo drum motor according to claim 1, characterized in that: The interior of the servo roller shaft (2) is hollow for the wire harness to pass through.
3. The integrated servo drum motor according to claim 2, characterized in that: Seven pairs of magnetic poles (3) are arranged in a uniform annular array on the inner wall of the servo drum shell (1).
4. The integrated servo drum motor according to claim 3, characterized in that: The drive control board (5) comprises a main control chip, an operational amplifier, and an external communication chip.
5. The integrated servo drum motor according to claim 4, characterized in that: The integrated circuit board (7) comprises a power management chip, an off-axis magnetic encoding chip (6), a driving MOS chip, and a three-phase current sampling resistor.