CN105871164A - Servo motor for robot - Google Patents
Servo motor for robot Download PDFInfo
- Publication number
- CN105871164A CN105871164A CN201610234730.7A CN201610234730A CN105871164A CN 105871164 A CN105871164 A CN 105871164A CN 201610234730 A CN201610234730 A CN 201610234730A CN 105871164 A CN105871164 A CN 105871164A
- Authority
- CN
- China
- Prior art keywords
- motor
- rotor
- light
- photoelectric counter
- stator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K29/00—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices
- H02K29/06—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with position sensing devices
- H02K29/10—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with position sensing devices using light effect devices
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Brushless Motors (AREA)
Abstract
The invention discloses a servo motor for a robot. The servo motor structurally comprises a motor, a signal receiver and a signal projector, wherein the signal projector comprises a photoelectric counter; a light source is fixed on a tooth part of a stator of the motor and can emit light to a rotor in the motor; a plurality of shading points which are distributed at equal distances are arranged on a circle, corresponding to the light source, of the motor rotor; the light source irradiates the shading points; and the photoelectric counter counts and converts the motor rotation radian and position according to the quantity of the shading points, so that the rotating speed and the position of the motor are determined; compared with an existing servo motor, the servo motor disclosed by the invention is longer in service lifetime; and the cost is reduced.
Description
Technical field
The present invention relates to machine field, particularly relate to the servomotor of a kind of optoelectronic induction counting.
Background technology
Servomotor refers to control the electromotor of mechanical organ operating in servosystem, is a kind of subsidy indirect speed change gear of motor, and servomotor can make control speed, and positional precision is very accurate, voltage signal can be converted into torque and rotating speed to drive control object.Servo motor rotor rotating speed is by input signal control, and energy fast reaction, in automatic control system, as executive component, and there is the characteristics such as electromechanical time constant is little, the linearity is high, pickup voltage, the angular displacement signal of telecommunication received can being converted on motor reel or angular velocity output.It is divided into direct current and the big class of AC servomotor two, it is mainly characterized by, and when signal voltage is zero without rotation phenomenon, rotating speed is along with the increase of torque and uniform descent, general servomotor uses closed loop control, there is return pulse signal and send the function of pulse signal, and sending pulse signal and can pass through encoder to count, the number of turns of reaction rotor rotation and concrete angle, thus release rotor speed, the information such as position, in order to control, but encoder is the longest for service life.
Summary of the invention
The present invention, for increasing the servomotor counting assembly life-span, uses photoelectric counting principle, makes following design, present configuration includes motor, signal receiver, signal projector, described motor includes that stator, rotor, described stator include teeth portion, yoke portion, and described rotor includes rotor core, rotating shaft；It is characterized in that: described signal projector connects photoelectric counter, described photoelectric counter is axis reflector formula photoelectric counter, its light-emitting component, photo-sensitive cell, optical fiber are respectively positioned in a teeth portion of described stator, this teeth portion has the through hole passed through for described light-emitting component, photo-sensitive cell, optical fiber, the rotor core lateral wall of described rotor is fixed with counting circle for one week vertically opposite with described light-emitting component and photo-sensitive cell, having some count blocks, described count block outside described counting circle is adjacent reflective areas and non-reflective areas；
It is also preferred that the left the making material of described counting circle is high light reflecting metallic material, described non-reflective areas is the some light absorption paint districts outside described counting circle；
It is also preferred that the left described count block has 36 or 72, the circular arc number of degrees corresponding to each count block are respectively 10 ° or 5 °；
The present invention uses optoelectronic induction to count, when the rotor is turning, counting circle thereon also can concomitant rotation, the photoelectric counter being positioned on stator sends Infrared irradiation to counting circle, if in reflective areas, photo-sensitive cell can receive optical signal, if in non-reflective areas, then photo-sensitive cell cannot receive optical signal, count once, i.e. count once during rotor every turn 5 ° or 10 °, and fed back to servomechanism by signal projector and be converted to rotating speed and position and show, the present invention is longer compared with encoder for service life, and the most additionally take up space and weight, and counting is accurately, count block can be increased to obtain more preferable counting precision if needed, the present invention is applicable to robot.
Accompanying drawing explanation
Fig. 1 is stator teeth schematic diagram of the present invention.
Fig. 2 is the present invention the first visual angle schematic diagram.
Detailed description of the invention
Embodiment one
As shown in Figure 1 and Figure 2, present configuration includes motor, signal receiver 7, signal projector 1, and described motor includes that stator 6, rotor, described stator 6 include teeth portion 8, yoke portion, and described rotor includes rotor core 4, rotating shaft 3；It is characterized in that: described signal projector 1 connects photoelectric counter 2, described photoelectric counter 2 is axis reflector formula photoelectric counter, its light-emitting component 9, photo-sensitive cell 10, optical fiber 11 is respectively positioned in a teeth portion 8 of described stator 6, this teeth portion has for described light-emitting component 9, photo-sensitive cell 10, the through hole that optical fiber 11 passes through, rotor core 4 lateral wall of described rotor embeds counting circle 5 for one week vertically opposite with described light-emitting component 9 and photo-sensitive cell 10, described counting circle 5 has ripple limit or tooth limit, prevent it from relatively sliding, there are some count blocks in outside, described count block is adjacent reflective areas and non-reflective areas；
Concrete, the making material of described counting circle 5 is copper, and described non-reflective areas is the some light absorption paint districts outside described counting circle；
Concrete, described count block has 72, and the circular arc number of degrees corresponding to each count block are respectively 5 °.
These are only preferred embodiment of the present invention, therefore the scope of present invention enforcement can not be limited according to this that the equivalence change i.e. made according to description of the invention content and decoration all should belong in the range of present invention covering.
Claims (3)
1. a robot servomotor, its structure includes that motor, signal receiver, signal projector, described motor include that stator, rotor, described stator include teeth portion, yoke portion, and described rotor includes rotor core, rotating shaft；It is characterized in that: described signal projector connects photoelectric counter, described photoelectric counter is axis reflector formula photoelectric counter, its light-emitting component, photo-sensitive cell, optical fiber are respectively positioned in a teeth portion of described stator, this teeth portion has the through hole passed through for described light-emitting component, photo-sensitive cell, optical fiber, the rotor core lateral wall of described rotor is fixed with counting circle for one week vertically opposite with described light-emitting component and photo-sensitive cell, having some count blocks, described count block outside described counting circle is adjacent reflective areas and non-reflective areas.
Robot servomotor the most according to claim 1, it is characterised in that: the making material of described counting circle is high light reflecting metallic material, and described non-reflective areas is the some light absorption paint districts outside described counting circle.
Robot servomotor the most according to claim 1, it is characterised in that: described count block has 36 or 72, and the circular arc number of degrees corresponding to each count block are respectively 10 ° or 5 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610234730.7A CN105871164A (en) | 2016-04-18 | 2016-04-18 | Servo motor for robot |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610234730.7A CN105871164A (en) | 2016-04-18 | 2016-04-18 | Servo motor for robot |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105871164A true CN105871164A (en) | 2016-08-17 |
Family
ID=56636351
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610234730.7A Pending CN105871164A (en) | 2016-04-18 | 2016-04-18 | Servo motor for robot |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105871164A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2343648A1 (en) * | 1973-08-30 | 1975-03-13 | Portescap | Midget DC or stepping motor - determines rotational speed and/or angular position of motor shaft |
| DE19809769A1 (en) * | 1998-03-06 | 1999-09-09 | Doehler & Haass | Commutatorless variable revs synchronous electric motor for model vehicle |
| CN1661335A (en) * | 2004-02-26 | 2005-08-31 | 苏文威 | Detection device for detecting the rotation of the motor rotor |
| CN1992479A (en) * | 2005-12-28 | 2007-07-04 | 马渊马达株式会社 | Optical encoder device for small-sized motor and method of producing the same |
| CN205490062U (en) * | 2016-04-18 | 2016-08-17 | 江苏华源防爆电机有限公司 | Servo motor for robot |
-
2016
- 2016-04-18 CN CN201610234730.7A patent/CN105871164A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2343648A1 (en) * | 1973-08-30 | 1975-03-13 | Portescap | Midget DC or stepping motor - determines rotational speed and/or angular position of motor shaft |
| DE19809769A1 (en) * | 1998-03-06 | 1999-09-09 | Doehler & Haass | Commutatorless variable revs synchronous electric motor for model vehicle |
| CN1661335A (en) * | 2004-02-26 | 2005-08-31 | 苏文威 | Detection device for detecting the rotation of the motor rotor |
| CN1992479A (en) * | 2005-12-28 | 2007-07-04 | 马渊马达株式会社 | Optical encoder device for small-sized motor and method of producing the same |
| CN205490062U (en) * | 2016-04-18 | 2016-08-17 | 江苏华源防爆电机有限公司 | Servo motor for robot |
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| C10 | Entry into substantive examination | ||
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