CN205883096U - Magnetism closed loop stepper motor controller - Google Patents
Magnetism closed loop stepper motor controller Download PDFInfo
- Publication number
- CN205883096U CN205883096U CN201620704158.1U CN201620704158U CN205883096U CN 205883096 U CN205883096 U CN 205883096U CN 201620704158 U CN201620704158 U CN 201620704158U CN 205883096 U CN205883096 U CN 205883096U
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- motor
- step motor
- closed loop
- positional information
- permanent magnet
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Abstract
The utility model discloses a magnetism closed loop stepper motor controller, including the step motor pivot, step motor stator winding, the thin slice permanent magnet, magnetic sensor, singlechip controller, because magnetic sensor surveys the positional information that the rotor was acquireed to the mode of the direction in magnetic field, singlechip controller drives step motor stator winding through step motor 0 step motor 1 according to user instructions and positional information production PWM, makes motor work in the speed or position of user's requirement. The utility model discloses a magnetism closed loop stepper motor controller advantage lies in that volume ratio photoelectric sensor wants much little, and positional information is more accurate, and positional information can not lost to low -speed still high -speed operation to the interface is general simple, easily realizes, the complexity of circuit and software algorithm is low, has good using value and prospect.
Description
Technical field
This utility model belongs to Closed-Loop Control of Stepping Motor technical field, relates to a kind of magnetic closed loop controllor for step-by-step motor.
Background technology
Motor is one of key element in electromechanical integrated product, is that a kind of digitized of good performance performs unit
Part.The pulse signal of electricity can be converted into corresponding angular displacement by it, is a kind of discrete type automated execution element, and the most tired
Meter error.Typically in slowly run time there is good opened loop control effect.However as the raising of rotating speed, the reduction of moment of torsion
Presenting the situation of non-linear fast decay, now motor easily occurs step-out to cause the malposition of moving component, in order to
Solving this problem, high-speed stepper motor controller typically has closed loop detecting system.
The scheme that motor closed loop system in the market uses substantially has three kinds, and photoelectric encoder detects, reversely
Electromotive force detects, phase current sensing.Three kinds of detection modes have obvious shortcoming, and the first adds the volume of motor also
And complexity is installed, the second inverse electromotive force voltage when low speed is the lowest almost cannot be detected, and the third is can only be at a certain section
In velocity interval, detection, is only used for speed controlling substantially.Therefore, develop for these problems based on magnetic field detection position
High-speed stepper motor driver.
Utility model content
The purpose of this utility model is to provide and a kind of new obtain step motor position based on magnetic field detection means and go forward side by side
The controller that row high-speed driving controls, the shortcoming overcoming current various closed loop controller.
This utility model be the technical scheme is that a kind of magnetic closed loop controllor for step-by-step motor, turns including motor
Axle, step motor stator winding, described stepping motor rotating shaft is fixing with described step motor stator winding to be connected；Including: described
Being fixedly connected with thin slice permanent magnet on stepping motor rotating shaft, described thin slice permanent magnet is near being provided with Magnetic Sensor；Described magnetic passes
Sensor is connected by differential coding interface with singlechip controller, and described singlechip controller is connected with motor-drive circuit, institute
State motor-drive circuit to be connected with described step motor stator winding.
Further, described thin slice permanent magnet is circular.
Further, the driving signal of described motor-drive circuit is PWM.
Further, described thin slice permanent magnet is 3-10mm with the mounting distance of described Magnetic Sensor.
The beneficial effects of the utility model are: mode based on magnetic closed loop carries out the position and speed of motor and controls, body
Long-pending more much smaller than photoelectric sensor, positional information more accurately (often circle can be fine to 1600 segmentation angles), no matter low speed
Or high-speed cruising is all without losing positional information, and Universal joint is simple, it is easy to accomplish, circuit and the complexity of software algorithm
Spending more much lower than the mode of inverse electromotive force and phase current acquisition positional information, the complexity with photoelectric encoder is identical.Have
Good using value and prospect.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of magnetic closed loop controllor for step-by-step motor that this utility model provides.
Detailed description of the invention
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of this utility model rather than whole
Embodiment.Based on the embodiment in this utility model, those of ordinary skill in the art are not under making creative work premise
The every other embodiment obtained, broadly falls into the scope of this utility model protection.
See Fig. 1, be a kind of magnetic closed loop controllor for step-by-step motor of this utility model offer, including stepping motor rotating shaft 1,
Step motor stator winding 2, thin slice permanent magnet 3, Magnetic Sensor 4, singlechip controller 5, motor-drive circuit 6.Thin slice permanent magnetism
Body 3 is fixed together with stepping motor rotating shaft 1, and thin slice permanent magnet 3 and Magnetic Sensor 4 are near installation, Magnetic Sensor 4 and single-chip microcomputer
Controller 5 is connected by differential coding interface, and singlechip controller 5 is connected with motor-drive circuit 6, and driving signal is PWM(arteries and veins
Rush width coding), motor-drive circuit 6 is connected with step motor stator winding 2, and single-chip microcomputer runs program, receives user instruction,
Complete the acceleration/deceleration control algorithm of station acquisition and motor.
Device operation principle of the present utility model is, thin slice permanent magnet 3 produces by the stationary magnetic field of N pole to S pole, and fixes
On stepping motor rotating shaft 1, Magnetic Sensor 4 is installed near thin slice permanent magnet 3, and when stepping motor rotating shaft 1 moves, thin slice is forever
The magnetic direction that magnet 3 produces can and then rotate, and Magnetic Sensor 4 can detect the change of magnetic direction and by changing value process
Reason issues singlechip controller 5 by digital differential addressable port, singlechip controller 5 receive after positional information can according to but
Front position and user instruction position, or the frequency of PWM output is controlled according to present speed and user instruction speed,
Pwm signal drives motor-drive circuit 6 to be converted into phase current signal to step motor stator winding 2, generation torque control motors
Turn to position or rotating speed that user wants.
Specifically, described machine shaft 1 is fixed together with thin slice permanent magnet 3, and thin slice permanent magnet 3 produces constant magnetic
, Magnetic Sensor 4 detects the direction i.e. positional information of this stationary magnetic field, and singlechip controller 5 is believed according to user instruction and position
Breath produces PWM, and motor-drive circuit 6 produces constant current drive stepping motor stator winding 2 and controls electric machine rotation, makes motor work
In the speed or position of user's requirement.
Particularly saying, whole system is anti-based on the positional information that the detection of thin slice permanent magnet 3 magnetic direction completes motor
Feedback, produces on this basis and controls sequential.
This utility model by by a thin slice Circular permanent magnet ferropexy in the rotating shaft of motor, utilize Magnetic Sensor to detect
The method in permanent magnet magnetic line direction determines the exact position of machine shaft, and permanent magnet can produce the magnetic being perpendicular to machine shaft
The line of force, direction is from N to S, and sensor utilizes Hall effect detect the magnetic field size of correspondence respectively on X, Y-axis and carry out corresponding
Calculate accurate angle information after compensation and by the way of numeral, positional information is passed to singlechip controller again, single-chip microcomputer
Controller according to current position and target location or according to current speed and target velocity combine control algolithm to
The control signal going out motor completes closed loop control.
One of ordinary skill in the art will appreciate that all or part of flow process realizing in above-described embodiment method, be permissible
Instructing relevant hardware by computer program to complete, described program can be stored in a computer read/write memory medium
In, this program is upon execution, it may include such as the flow process of the embodiment of above-mentioned each method.Wherein, described storage medium can be magnetic
Dish, CD, read-only store-memory body (Read-Only Memory, ROM) or random store-memory body (Random Access
Memory, RAM) etc..
The above is preferred implementation of the present utility model, it is noted that for the ordinary skill of the art
For personnel, on the premise of without departing from this utility model principle, it is also possible to make some improvements and modifications, these improve and profit
Decorations are also considered as protection domain of the present utility model.
Claims (4)
1. a magnetic closed loop controllor for step-by-step motor, including stepping motor rotating shaft (1), step motor stator winding (2), described step
Enter that machine shaft (1) and described step motor stator winding (2) are fixing to be connected；It is characterized in that, including: described motor turns
Being fixedly connected with thin slice permanent magnet (3) on axle (1), described thin slice permanent magnet (3) is near being provided with Magnetic Sensor (4)；
Described Magnetic Sensor (4) is connected by differential coding interface with singlechip controller (5), described singlechip controller (5)
Being connected with motor-drive circuit (6), described motor-drive circuit (6) is connected with described step motor stator winding (2).
2. a kind of magnetic closed loop controllor for step-by-step motor as claimed in claim 1, it is characterised in that described thin slice permanent magnet (3)
For circle.
3. a kind of magnetic closed loop controllor for step-by-step motor as claimed in claim 1, it is characterised in that described motor-drive circuit
(6) driving signal is PWM.
4. a kind of magnetic closed loop controllor for step-by-step motor as claimed in claim 1, it is characterised in that described thin slice permanent magnet (3)
It is 3-10mm with the mounting distance of described Magnetic Sensor (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620704158.1U CN205883096U (en) | 2016-07-06 | 2016-07-06 | Magnetism closed loop stepper motor controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620704158.1U CN205883096U (en) | 2016-07-06 | 2016-07-06 | Magnetism closed loop stepper motor controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205883096U true CN205883096U (en) | 2017-01-11 |
Family
ID=57695398
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620704158.1U Active CN205883096U (en) | 2016-07-06 | 2016-07-06 | Magnetism closed loop stepper motor controller |
Country Status (1)
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| CN (1) | CN205883096U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105915132A (en) * | 2016-07-06 | 2016-08-31 | 西安瑞日电子发展有限公司 | Magnetic closed-loop stepper motor controller |
-
2016
- 2016-07-06 CN CN201620704158.1U patent/CN205883096U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105915132A (en) * | 2016-07-06 | 2016-08-31 | 西安瑞日电子发展有限公司 | Magnetic closed-loop stepper motor controller |
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