CN106026532B - The position signal input module of servo motor - Google Patents
The position signal input module of servo motor Download PDFInfo
- Publication number
- CN106026532B CN106026532B CN201610473672.3A CN201610473672A CN106026532B CN 106026532 B CN106026532 B CN 106026532B CN 201610473672 A CN201610473672 A CN 201610473672A CN 106026532 B CN106026532 B CN 106026532B
- Authority
- CN
- China
- Prior art keywords
- capacitor
- operational amplifier
- resistance
- circuit
- signal input
- 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.)
- Active
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/02—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for suppression of electromagnetic interference
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Position Or Direction (AREA)
- Indication And Recording Devices For Special Purposes And Tariff Metering Devices (AREA)
Abstract
The present invention discloses a kind of position signal input module of servo motor, it includes position ruler signal input circuit, analog voltage output circuit, thermocouple power supply circuit, the position ruler signal input circuit, analog voltage output circuit, the electrical connection of thermocouple power supply circuit, the position ruler signal input circuit, including integrated operational amplifier U71A, the non-inverting input terminal pin 3 of the integrated operational amplifier U71A is connect with inductance L7, the node of capacitor C37 between the two.The present invention is by the position reasonable layout arrangement between circuit element, to realize the purpose for reducing noise reduction and reducing electromagnetic interference.
Description
Technical field
The invention belongs to the technical fields of servo drive control, and in particular to the position signal input module of servo motor.
Background technique
Servo motor (servo motor) refers to the engine that mechanical organ operating is controlled in servo-system, is a kind of
Subsidize the indirect speed change gear of motor.Servo motor can make to control speed, and position precision is very accurate, voltage signal can be converted
It is torque and revolving speed with drive control object.Servo motor rotor revolving speed is controlled by input signal, and energy fast reaction, automatic
In control system, it is used as executive component, and there are the characteristics such as electromechanical time constant small, the linearity is high, pickup voltage, it can be being received
To electric signal be converted into angular displacement on motor reel or angular speed output.It is divided into direct current and AC servomotor two is big
Class is mainly characterized by, when signal voltage is zero without rotation phenomenon, revolving speed uniform descent with the increase of torque.
Servo-system (servo mechanism) is that the output controlled volume such as position, orientation, state of object is enable to follow
Input the automatic control system arbitrarily changed of target (or given value).Servo is positioned mainly by pulse, substantially can be with this
Sample understands that servo motor receives 1 pulse, will rotate the corresponding angle of 1 pulse, thus realize displacement, because, servo
Motor itself has the function of issuing pulse, so servo motor one angle of every rotation, can all issue the pulse of corresponding number,
In this way, echoing with the pulse shaping of servo motor receiving, or it is closed loop, in this way, which system will know that sent out how many
Pulse has received that how many pulse are returned to servo motor again, in this way, it is possible to it is accurately controlled very much the rotation of motor, thus
It realizes accurate positioning, can achieve 0.001mm.
Servo motor is also easy to produce electromagnetic interference, also has to environment required.Rotor inside servo motor is permanent magnet, is driven
The U/V/W three-phase electric forming electromagnetic field of dynamic device control, rotor rotates under the action of this magnetic field, while the encoder that motor is included
Feedback signal is compared according to value of feedback with target value to driver, driver, the angle of adjustment rotor rotation.Servo motor
Precision be decided by the precision (line number) of encoder.In servo motor, common-mode noise, the non-uniform Distribution of light source, photodetection
All there is very big influence to grating scale (or position ruler) output signal in the factors such as the Incomplete matching of device.
Existing servo motor and servo-system all include position ruler signal input circuit, analog voltage output circuit, thermoelectricity
Even power supply circuit, but there is electromagnetic interference between each other in these traditional circuits, and electromagnetic interference has Conduction Interference and radiation dry
Two kinds are disturbed, in electric network, high-frequency signal line, the pin of integrated circuit, all kinds of connectors etc. are all likely to become with antenna performance
Radiation interference source, electromagnetic wave can be emitted and influence the normal work of other subsystems in other systems or this system.To improve
The precision of motor it is necessary to reducing noise current as far as possible；Power component is equipped between circuit, power component heating power is easy
The unwanted electromagnetic fields of electromagenetic wave radiation are generated, some sensitive equipments are also easy to be disturbed, and the high frequency component of circuit itself is also deposited
In electromagnetic interference, the stabilization row of element is influenced, and then adverse effect is generated to this circuit function, unbalanced electromagnetic force is to make
Motor generates the root of electric and magnetic oscillation and electromagnetic radiation noise, and it is dry that entire servo motor operation can also generate electromagnetism to surrounding enviroment
It disturbs, therefore lowers electromagnetic susceptibility as far as possible and there is very big necessity.
Summary of the invention
The purpose of the present invention is to solve above-mentioned technical problem, provide that a kind of stability is higher, and anti-interference is stronger
Position signal input module.
In order to achieve the above object of the invention, the invention adopts the following technical scheme:
Position signal input module, including position ruler signal input circuit, analog voltage output circuit, thermocouple power supply electricity
Road, the position ruler signal input circuit, analog voltage output circuit, the electrical connection of thermocouple power supply circuit, the position ruler letter
Number input circuit, including the non-inverting input terminal pin 3 and electricity of integrated operational amplifier U71A, the integrated operational amplifier U71A
Feel the node connection of L7, capacitor C37 between the two；Mode control input mouth MOD IN (i.e. signal input part) and resistance
R273, inductance L7 are sequentially connected, and are connected between the resistance R273, inductance L7 with one end of one end of resistance R275, capacitor C36
It connects, the other end of the resistance R275, the other end of capacitor C36 are connect with capacitor C37 is followed by simulation ground AGND；Integrated computation is put
The reverse input end pin 2 of big device U71A is connect after connecting with signal output end pin 1 with resistance R274；The resistance R274 with
Capacitor C38 connection is followed by simulation ground AGND；Negative power end pin 4 and capacitor C39, the negative pressure stabilizing electricity of integrated operational amplifier U71A
Source connection, the positive power source terminal pin 8 of integrated operational amplifier U71A are connect with positive regulated power supply, capacitor C32, the capacitor C39,
Capacitor C32 meets simulation ground AGND；Node between the resistance R274 and capacitor C38 (is believed with scheme control output port MOD
Number input terminal), the ac input end pin 3 of compound diode D133 connect, the negative voltage output end 1 of compound diode D133,
Capacitor C38 meets simulation ground AGND, and it is 33V that the positive voltage output end 2 of compound diode D133, which meets output reference voltage ADREF,.This
In scheme, for realizing overcompensation, the purpose is to improve the bandwidth of output and slew rate by capacitor C39, capacitor C32.This programme is logical
Position reasonable layout arrangement between oversampling circuit element, to realize the purpose for reducing noise reduction and reducing electromagnetic interference.
Further, the integrated operational amplifier U71A is ideal operational amplifier device, positive regulated power supply, negative regulated power supply difference
For+5, -5V.
Further, the compound diode D133 is formed by 2 zener diode reverse parallel connections.It is preferential to use
MMBD7000 model.The compound diode plays the clamper of two-way signaling, clipping effect, prevents the excessive damage rear class of input signal
Signal is limited in -0.5V~+33.5V range by circuit.
Further, the analog voltage output circuit includes operational amplifier U92A, operational amplifier U92B, the ideal
The output end of amplifier U92A is connect with the non-inverting input terminal 5 of operational amplifier U92B；Analog electrical signal input port DAC-PR1
It is connect after connecting resistance R337 with the non-inverting input terminal pin 3 of operational amplifier U92A, the reverse input end of operational amplifier U92A
2 connecting resistance R341 of pin is followed by power ground PGND；The reverse input end pin 2 of ideal amplifier U92A and output pin 1 it
Between an external resistance R34 3, the positive power source terminal pin 8 of operational amplifier U92A connects positive regulated power supply, capacitor C79, ideal amplifier
The negative power end 4 of U92A connects negative regulated power supply, capacitor C83, the capacitor C79, capacitor C83 meet power ground PGND；Operation amplifier
The reverse input end pin 6 of device U92B is connect with output pin 7, and the output pin 7, resistance R339, capacitor C81 connect
It connects, the capacitor C81 meets power ground PGND, and the resistance R339 is connect with analog voltage output end+PR1+.Mould in this programme
Quasi- voltage output is 0~10V, and to realize overcompensation, the purpose is to improve the bandwidth of output and pressure pendulum by capacitor C79, capacitor C83
Rate.
Dual-stage amplifier is used in this programme, the input resistance of rear stage is exactly the load of previous stage.
Further, the resistance R34 3, resistance R34 1 are Chip-R, and size is 10K/1%.
Further, the operational amplifier U92A, operational amplifier U92B use TL082 model.
Further, the thermocouple power supply circuit, including the chip U97 with low drop voltage regulatory function, resistance
Circuit on one side R357 in parallel with resistance R358 connects the electricity that power supply+15V, the other end and capacitor are formed in parallel by C94, capacitor C95
Road connection is followed by special chip with reference to ground TGND；The node of the resistance R358 and capacitor C95 between the two draws with chip U97's
Foot 3 connects；The pin 3 of the chip U97 is connect with the cathode of diode D154, the anode and capacitor of the diode D154
The anode connection of C96 is followed by power supply 5V；The pin 2 of chip U97 and the electricity being formed in parallel by capacitor C96, capacitor C97, capacitor C98
The connection of road one end is followed by output end interface TP3, the other end for the circuit that the capacitor C96, capacitor C97, capacitor C98 are formed in parallel
It is connect with special chip with reference to ground TGND, output end interface TP11.
Further, chip U97 uses LM1117IMP-5.0 chip, provides current limit and Thermal protection.
Further, diode D154 can select LL4148 model.
Compared with prior art, the present invention beneficial effect is: having structure simple using this module, component placement is reasonable
Electromagnetic interference can be effectively reduced in advantage, improve the stability of entire module, extend the service life of module.
Detailed description of the invention
Fig. 1 is position ruler signal input circuit figure of the invention；
Fig. 2 is analog voltage output circuit figure；
Fig. 3 is thermocouple power supply circuit.
Specific embodiment
Below by specific embodiment the technical scheme of the present invention will be further described explanation.
If element employed in the embodiment of the present invention is component commonly used in the art without specified otherwise.
Shown in Fig. 1, position ruler, that is, grating scale is the measurement feedback device to be worked using the optical principle of grating.Grating scale
It is usually applied in the closed loop servo system of numerically-controlled machine tool, can be used as the detection of straight-line displacement or angular displacement.It measures output
Signal be digit pulse, have detection range big, the characteristics of detection accuracy is high, fast response time.Its principle is to believe modulation
Number amplification output, to realize the input of position ruler signal.Inductance L7 in this programme can use WE742792040z model,
Double diode can use MMBD7000 model.
In the ruler signal input circuit of position, the resistance value size of resistance R275 uses 1M, capacitor C36 to use 1nF, capacitor C32,
It is 10R that capacitor C37, capacitor C38, capacitor C39, which use 0.1nF, resistance R274, and resistance R273 is 100 Ω (ohm).
Shown in Fig. 2, principle is the DAC conversion under emulation mode, by non-electrical physical quantity (such as distance, speed) conversion
For analog electrical signal (voltage) output, digital quantity is outputted as analog quantity.The capacity or number used according to circuit element each in figure
It is worth size, the voltage exported in this circuit diagram is 0-10V.
In analog voltage output circuit, resistance R337 size is 10K.Resistance R34 1 is Chip-R and size is 10K/
1%.Capacitor C79, capacitor C83 use 0.1nF, resistance R339 that 1K, capacitor C81 is used to use 1000pF.
In digital circuit, part signal can be converted into noise and when electric current passes through conductor, have electricity when digital circuit works
Wave, which radiates, to be come, that is, gives off noise electric wave.
Fig. 3 show the circuit connection diagram of thermocouple power supply.Thermocouple (thermocouple) is in temperature measuring instrument
Common temperature element, it directly measures temperature, and temperature signal is converted into thermo-electromotive force signal, passes through electric meter (two
Secondary instrument) it is converted into the temperature of measured medium.Servo-system needs the process powered on to thermocouple, the connection of this circuit
Relationship is exactly for realizing the function.In the circuit, (electrolysis) capacitor C96 and (terylene) capacitor C97, (terylene) capacitor C98 are simultaneously
It is grounded after connection, is grounded after (electrolysis) capacitor C94 is in parallel with (terylene) capacitor C95, mainly plays power supply and move back idol, export the work of filtering
With.Because circuit may generate High-frequency Interference, electrolytic capacitor is very big to the resistance of this high-frequency current, that is to say, that light is with one
Only big electrolytic capacitor is poor to the absorbability of High-frequency Interference.In the case where having high-frequency current, the effect one of electric capacity of the dacron
As, the effect of monolithic capacitor or ceramic disc capacitor is fine, but the characteristics of these capacitors is that capacity cannot be made very greatly (in other words
Cost is very high when capacity is big), as soon as so individually it is also not all right with such capacitor, two kinds of capacitors are together in parallel, length is taken
Mend short, effect is fine.Electric capacity of the dacron can also be substituted with monolithic capacitor or ceramic disc capacitor, better effect.Three capacitor C96,
Capacitor C97, capacitor C98 parallel connection noise reduction.Electrolytic capacitor itself mainly plays pressure stabilization function, prevents voltage DROP.
The filter circuit that power-supply filter is made of capacitor, inductance and resistance, power supply+T15V in this programme, resistance
A filter circuit is constituted between R357, resistance R358 and capacitor C94, capacitor C95.
In the circuit of thermocouple power supply, resistance R357, resistance R358 are 510 Ω, and capacitor C94 size uses 47nF/35V,
Capacitor C95 uses 0.1uF, capacitor C96 to use 100uF/16V, capacitor C97 that 0.1uF, capacitor C98 is used to use 1000pF.
The above is only a preferred embodiment of the present invention, not delimit the scope of the invention, for those skilled in the art's root
The appropriate deformation and improvement made according to mentality of designing of the invention, all should belong within protection scope of the present invention.
Claims (8)
1. a kind of position signal input module for servo motor, which is characterized in that including position ruler signal input circuit, mould
Quasi- voltage follower circuit, thermocouple power supply circuit, the position ruler signal input circuit, analog voltage output circuit, thermocouple
Power supply circuit electrical connection, the position ruler signal input circuit, including integrated operational amplifier U71A, the integrated computation amplification
The non-inverting input terminal pin of device U71A is connect with inductance L7, the node of capacitor C37 between the two；Mode control input mouth MOD
IN and resistance R273, inductance L7 are sequentially connected, between the resistance R273, inductance L7 with one end of resistance R275, capacitor C36
One end connection, the other end of the resistance R275, the other end of capacitor C36 are connect with capacitor C37 is followed by simulation ground AGND；It is integrated
The inverting input terminal pin of operational amplifier U71A is connect after connecting with signal output end pin with resistance R274；The resistance
R274 is connect with capacitor C38 is followed by simulation ground AGND；The negative power end pin and capacitor C39 of integrated operational amplifier U71A are born
Regulated power supply connection, the positive power source terminal pin of integrated operational amplifier U71A are connect with positive regulated power supply, capacitor C32, the electricity
Hold C39, capacitor C32 meets simulation ground AGND；Node and scheme control output port between the resistance R274 and capacitor C38
The ac input end pin connection of MOD, compound diode D133, negative voltage output end, the capacitor C38 of compound diode D133 connect
Simulation ground AGND, it is 33V that the positive voltage output end of compound diode D133, which meets output reference voltage ADREF,.
2. a kind of position signal input module for servo motor according to claim 1, which is characterized in that the collection
It is ideal operational amplifier device at operational amplifier U71A, positive regulated power supply, negative regulated power supply are respectively+5, -5V.
3. a kind of position signal input module for servo motor according to claim 1, which is characterized in that described multiple
Diode D133 is closed to be formed by 2 zener diode reverse parallel connections.
4. a kind of position signal input module for servo motor according to claim 1, which is characterized in that the mould
Quasi- voltage follower circuit includes operational amplifier U92A, operational amplifier U92B, the output end of the operational amplifier U92A with
The non-inverting input terminal of operational amplifier U92B connects；It is put after analog electrical signal input port DAC-PR1 connecting resistance R337 with operation
The non-inverting input terminal pin connection of big device U92A, the inverting input terminal pin connecting resistance R341 of operational amplifier U92A are followed by power supply
Ground PGND；An external resistance R34 3 between the inverting input terminal pin and the output pin of its own of operational amplifier U92A,
The positive power source terminal pin of operational amplifier U92A connects positive regulated power supply, capacitor C79, and the negative supply termination of operational amplifier U92A is negative
Regulated power supply, capacitor C83, the capacitor C79, capacitor C83 meet power ground PGND；The inverting input terminal of operational amplifier U92B is drawn
Foot is connect with the output pin of operational amplifier U92B, the output pin of the operational amplifier U92B, resistance R339, electricity
Hold C81 connection, the capacitor C81 meets power ground PGND, and the resistance R339 is connect with analog voltage output end+PR1+.
5. a kind of position signal input module for servo motor according to claim 4, which is characterized in that the fortune
It calculates amplifier U92A, operational amplifier U92B and uses TL082 model.
6. a kind of position signal input module for servo motor according to claim 1, which is characterized in that the heat
Galvanic couple power supply circuit, including the chip U97 with low drop voltage regulatory function, circuit resistance R357 in parallel with resistance R358
One termination power+15V, the other end are followed by chip U97 with reference to ground with by the circuit connection that capacitor C94, capacitor C95 are formed in parallel
TGND；The resistance R358 is connect with the node of capacitor C95 between the two with the third pin of chip U97；The chip U97's
Third pin is connect with the cathode of diode D154, and the anode of the diode D154 connect with the anode of capacitor C96 and is followed by electricity
Source 5V；The second pin of chip U97 connect with the circuit on one side being formed in parallel by capacitor C96, capacitor C97, capacitor C98 be followed by it is defeated
End interface TP3 out, the other end and chip U97 for the circuit that the capacitor C96, capacitor C97, capacitor C98 are formed in parallel are with reference to ground
TGND connection.
7. a kind of position signal input module for servo motor according to claim 6, which is characterized in that the core
Piece U97 uses LM1117IMP-5.0 chip.
8. a kind of position signal input module for servo motor according to claim 6, which is characterized in that described two
Pole pipe D154 selects LL4148 model.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610473672.3A CN106026532B (en) | 2016-06-22 | 2016-06-22 | The position signal input module of servo motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610473672.3A CN106026532B (en) | 2016-06-22 | 2016-06-22 | The position signal input module of servo motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106026532A CN106026532A (en) | 2016-10-12 |
| CN106026532B true CN106026532B (en) | 2018-12-04 |
Family
ID=57083615
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610473672.3A Active CN106026532B (en) | 2016-06-22 | 2016-06-22 | The position signal input module of servo motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106026532B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI821546B (en) * | 2020-03-25 | 2023-11-11 | 博計電子股份有限公司 | Motor electronic load simulation device |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108494296A (en) * | 2017-12-26 | 2018-09-04 | 宁波兴泰科技有限公司 | A kind of position signal conversion module of servo motor |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203759112U (en) * | 2014-03-31 | 2014-08-06 | 深圳市嘉力电气技术有限公司 | High-frequency current detection circuit |
| CN204440118U (en) * | 2015-03-05 | 2015-07-01 | 常州轻工职业技术学院 | A kind of electrohydraulic servo bending machine |
| CN205725344U (en) * | 2016-06-22 | 2016-11-23 | 宁波兴泰科技有限公司 | The position signalling input module of servomotor |
-
2016
- 2016-06-22 CN CN201610473672.3A patent/CN106026532B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203759112U (en) * | 2014-03-31 | 2014-08-06 | 深圳市嘉力电气技术有限公司 | High-frequency current detection circuit |
| CN204440118U (en) * | 2015-03-05 | 2015-07-01 | 常州轻工职业技术学院 | A kind of electrohydraulic servo bending machine |
| CN205725344U (en) * | 2016-06-22 | 2016-11-23 | 宁波兴泰科技有限公司 | The position signalling input module of servomotor |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI821546B (en) * | 2020-03-25 | 2023-11-11 | 博計電子股份有限公司 | Motor electronic load simulation device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106026532A (en) | 2016-10-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207200605U (en) | The more motor real-time control platforms of modularization based on DSP and FPGA | |
| CN106026532B (en) | The position signal input module of servo motor | |
| CN204539119U (en) | A kind of electric signal sampling isolation circuit | |
| CN203180813U (en) | A motor controller for a self-balance double-wheel electric bicycle, and the self-balance double-wheel electric bicycle | |
| CN110988450B (en) | Safe and automatic magnetic field current feedback device and method | |
| CN201616023U (en) | Signal isolation conversion output module | |
| CN205725344U (en) | The position signalling input module of servomotor | |
| CN109597016A (en) | Metering device, calibration method thereof and ammeter | |
| CN104811183A (en) | Electric signal sampling isolation circuit | |
| CN115683346B (en) | Non-contact infrared temperature detector | |
| CN203166866U (en) | High-precision photoelectric coupler of airborne data collector | |
| CN207636183U (en) | A kind of light power meter measuring device | |
| CN203135654U (en) | PG circuit board and AC plastic packaging motor using the same | |
| CN207636200U (en) | A kind of position signal conversion module of servo motor | |
| CN210664793U (en) | High-precision temperature sampling circuit | |
| CN204576148U (en) | A kind of microcomputer rotation speed signal device for genset | |
| CN202997547U (en) | A\D (Analogue\Digital) input end clamping circuit in DSP (Digital Signal Processor) minimum system | |
| CN202041577U (en) | Current sampling circuit of servo motor | |
| CN203365004U (en) | Temperature measurement system of electric driving system for electric vehicle | |
| CN203573918U (en) | Overload alarm non-tripping device of plastic casing type circuit breaker | |
| CN204374723U (en) | Programmable resistance system | |
| CN102981047A (en) | Multifunctional digital meter | |
| CN104459329A (en) | Device for testing metal electrical resistivity change within continuous temperature range | |
| CN218998047U (en) | High-precision quantization circuit and system | |
| CN215729364U (en) | Non-inductive control circuit of motor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |