CN204376565U - The peristaltic pump system that a kind of brushless servo drives - Google Patents
The peristaltic pump system that a kind of brushless servo drives Download PDFInfo
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- CN204376565U CN204376565U CN201520102541.5U CN201520102541U CN204376565U CN 204376565 U CN204376565 U CN 204376565U CN 201520102541 U CN201520102541 U CN 201520102541U CN 204376565 U CN204376565 U CN 204376565U
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- brushless servo
- servo motor
- peristaltic pump
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- pump system
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- 230000002572 peristaltic effect Effects 0.000 title claims abstract description 31
- 238000004804 winding Methods 0.000 claims description 21
- 239000000203 mixture Substances 0.000 claims description 4
- 239000012503 blood component Substances 0.000 description 4
- 239000000306 component Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000000819 phase cycle Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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Abstract
The utility model discloses the peristaltic pump system that a kind of brushless servo drives, and comprises pump head, brushless servo motor, motor driver, sensing element and controller; Brushless servo motor is electrically connected by described motor driver, and described motor driver is electrically connected with described controller; The output shaft of brushless servo motor connects pump head, and the pump head other end connects pump line; Sensing element is installed on brushless servo motor.The utility model adopts brushless servo motor to drive peristaltic pump, have that torque is large, efficiency is high, power density is large, volume is little due to brushless servo motor and the feature such as servo performance is good, and pass through electronic commutation, do not use brush-commutated, thus avoid the technical problems such as wear of brush, fundamentally extend the useful life of peristaltic pump, thus ensure that the excellent dynamic characteristic of whole peristaltic pump.
Description
Technical field
The utility model relates to a kind of peristaltic pump, particularly relates to the peristaltic pump system that a kind of brushless servo motor drives.
Background technology
At present, the peristaltic pump of every profession and trade extensive use, the peristaltic pump especially blood component separator applied, major part adopts driving stepper motor, and some adopts to have brush DC servo motor to drive.Apply that stepper motor driven advantage is that price is low, low speed moment is large, it is simple to control, the life-span is long, shortcoming is vibration, generate heat, easily lose step, high speed moment is little, efficiency is low, volume is large, poor stability, bad dynamic performance.Because stepping motor does not possess servo characteristic, so when applying on blood component separator, larger hidden danger is easily by liquid line squeeze crack, causes blood contamination.
Application has the advantage of brush DC servo motor to be that servo characteristic is good, efficiency is high, it is low to generate heat, does not lose step, at a high speed and low speed time torque all high, shortcoming be cost high, control difficulty greatly, due to the wear problem of brush, cause the life-span short, volume is large.In a word, applied on blood component separator by the peristaltic pump having brush DC servo motor to drive, performance is good, but the life-span is low.
Utility model content
In order to overcome all drawbacks that stepper motor driven peristaltic pump brings with the peristaltic pump having brush DC servo motor to drive, the utility model provides the peristaltic pump system that a kind of novel brushless servo drives, the use of the peristaltic pump driven by novel brushless servo motor, for blood component separator brings the long-life, accuracy, high efficiency.
The technical scheme that the utility model is taked is: the peristaltic pump system that a kind of brushless servo drives, and comprises pump head, brushless servo motor, motor driver, sensing element and controller; Brushless servo motor is electrically connected by described motor driver, and described motor driver is electrically connected with described controller; The output shaft of brushless servo motor connects pump head, and the pump head other end connects pump line; Described sensing element is installed on brushless servo motor.Brushless servo motor is primarily of stators and rotators two parts composition, and stator comprises stator support and three groups of armature winding, is respectively wrapped on support; Rotor comprises rotating shaft and is fixed on the permanent magnet in rotating shaft, and permanent magnet is made up of several small magnets, and rotating shaft cross section Suo Shu, several magnets are enclosed in around rotating shaft according to S, N, S, N magnetic pole order.
Described brushless servo motor comprises direct current brushless servo motor, AC brushless servo motor.
Preferably, three-phase symmetrical star connection made by three groups of armature winding of described brushless servo motor, connected respectively by half H bridge electronic switch circuit, and often organize winding and respectively connected by an electronic switch circuit, described electronic switch circuit provides voltage by motor driver.
Preferably, the voltage that described motor driver provides inputs with direct current or alternating current; Before electric current input winding coil, voltage is changed into three-phase voltage by converter.
With converter in described electronic switch circuit, if input is alternating current, first convert the alternating current of input to direct current, direct voltage changes into three-phase voltage by converter again.
Described converter is made up of 6 power transistors, and be one group between two, each component is upper arm and underarm, is connected respectively on the coil of same group of winding of motor.
Described sensing element is also comprise sensor stator part and rotor portion, stationary part is installed on the stator of servomotor, rotor portion is installed on the rotor of servomotor, monitors the torque of brushless servo motor, position and velocity information, feeds back to motor driver.
Described sensing element adopts incremental encoder, or absolute type encoder, or revolves change, or tachometer.
The beneficial effect of the technical solution of the utility model is: the utility model adopts brushless servo motor to drive peristaltic pump, have that torque is large, efficiency is high, power density is large, volume is little due to brushless servo motor and the feature such as servo performance is good, and pass through electronic commutation, do not use brush-commutated, thus avoid the technical problems such as wear of brush, fundamentally extend the useful life of peristaltic pump, thus ensure that the excellent dynamic characteristic of whole peristaltic pump.
Accompanying drawing explanation
Fig. 1 is the component controls graph of a relation of the utility model peristaltic pump system.
Fig. 2 is the structure diagram of brushless servo motor;
Fig. 3 is the annexation figure of electronic switch circuit and motor electronic;
Fig. 4 is the scheme of installation of sensing element on motor.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in detail.
The peristaltic pump system that the utility model provides a kind of brushless servo to drive, Figure 1 shows that this peristaltic pump system figure, comprise: pump head 1, brushless servo motor 2, motor driver 3, sensing element 4 and controller 5 five part, in figure solid arrow be oriented to controlling party to, dotted arrow is oriented to signal feedback direction.Brushless servo motor 2 is driven by motor driver 3, and the instruction of driver comes from the driving instruction that controller 5 (namely computer or industrial computer system) sends.The output shaft of motor connects pump head 1, for pump head provides power.Pump head 1 other end connects pump line.Sensing element 4 is for feeding back the speed conditions of motor.
The servomotor that the utility model provides is brushless servo motor, and brushless servo motor comprises direct current and exchanges two kinds.As shown in Figure 2, it is little that brushless servo motor has volume to the internal structure of brushless servo motor 2, lightweight, and exert oneself large, response is fast, and speed is high, and inertia is little, rotates level and smooth, the advantages such as moment is stable.Importantly it can adopt intelligentized control method, and its electronics commutation mode is flexible, can with square wave or sine wave commutation.Brushless motor speed governing, frequency converter+variable-frequency motor speed governing, asynchronous machine+reductor speed governing form can be substituted comprehensively.
Fig. 2 is a kind of example structure sketch of brushless servo motor, show in figure that brushless servo motor is primarily of stator 21 and rotor 22 two parts composition, stator comprises stator support 211 and three groups of armature winding 212, be designated as U, V, W tri-groups of windings, often group has two coils, each winding is wrapped on support, and each winding maintains static, and sees Fig. 2.The permanent magnet 222 that rotor comprises rotating shaft 221 and is fixed in rotating shaft, permanent magnet 222 is made up of four pieces of magnets, is to be enclosed in around rotating shaft according to S, N, S, N magnetic pole order in rotating shaft cross section, relatively composition two groups of S, N poles.Rotating shaft 221 is also be made up of magnet steel.
Three-phase symmetrical star connection made by three groups of armature winding more than 212 of brushless servo motor, and operation principle is similar with threephase asynchronous.Electronic switch circuit annexation corresponding to winding as shown in Figure 3, it is half H bridge shape, electronic switch circuit provides voltage by external power supply, power supply directly with direct current input (being generally 24v) or with alternating current input (110v/220v), can divide into brushless DC servomotor and brushless AC servo motor with this.With converter in electronic switch circuit, if input is alternating current, first convert the alternating current of input to direct current, direct voltage changes into three-phase voltage by converter again; If input is direct current, directly changes into three-phase voltage by converter and carry out drive motors.No matter be direct current input or alternating current input, before motor coil be proceeded to, first direct voltage must be changed into three-phase voltage by converter.
Converter is generally made up of 6 power transistors, be one group between two, be divided into upper arm and underarm, be connected on one group of winding of motor, as the switch of control flow check through motor coil, in Fig. 3, VT1 group transistor switch connection is on U winding, and VT2 group transistor switch connection is on V winding, and VT3 group transistor switch connection is on W winding.Due to the change of winding current, cause the rotation of permanent magnet, and then drive axis of rotation.Therefore electronic servo both can realize commutation rotation, can realize again the stepless time adjustment of motor.
The drived control of motor is completed by motor driver 3.Driver 3 application space vector operation, by controlling the electric current of motor winding, realizes the accurate control to motor torque.By being arranged on the moment of torsion of the feedback of feedback element on motor, speed and position, contrasting with the given speed or position carrying out self-controller 5, continuous automatic straightening, realizing the accurate control of speed to motor and position.The control of driver to the torque of motor, speed and position is all that Full-closed servo controls.
Transducer 4 for feeding back speed and the positional information of rotor, real-time speed when carrying out SERVO CONTROL as motor driver 3 and real time position.Transducer 4 is also as the foundation of phase sequence control simultaneously.
As shown in Figure 4, the sensing element 4 that the utility model is selected also is comprise sensor stator part 41 and rotor portion 42, stationary part 41 is installed on the stator 21 of servomotor 2, rotor portion 42 is installed on the rotor 22 of servomotor 2, monitor the torque of brushless DC servomotor 2, position and velocity information, and feed back to driver 3.
Sensing element 4 for monitoring rotor speed and the positional information of motor, and feeds back to motor driver 3.Motor driver 3 can calculate spinner velocity and the positional information of motor according to the information of sensing element 4, and provides foundation for next step adjustment.
Motor driver 3 is electrically connected with controller 5, receives the instruction of controller 5, according to sensing element 4 feedack, controls brushless servo motor 2 and operates, carry out SERVO CONTROL, ensure the service performance of peristaltic pump.
The sensing element 4 that the utility model is selected can adopt incremental encoder, absolute type encoder, revolve change or tachometer etc.Incremental encoder is divided into again magneto-electric incremental encoder and photoelectric type incremental encoder.The similar incremental encoder of absolute type encoder principle, has multichannel transmitting illuminant and multichannel photo-sensitive cell, and each photo-sensitive cell exports a road pulse signal, and by the signal value of not different photo-sensitive cells in the same time, correspondence goes out the positional value of rotating shaft.
Claims (8)
1. a peristaltic pump system for brushless servo driving, is characterized in that, comprise pump head, brushless servo motor, motor driver, sensing element and controller;
Described brushless servo motor is electrically connected by described motor driver, and described motor driver is electrically connected with described controller;
The output shaft of described brushless servo motor connects pump head, and the pump head other end connects pump line;
Described sensing element is installed on brushless servo motor;
Described brushless servo motor is primarily of stators and rotators two parts composition, and stator comprises stator support and is wrapped in three groups of armature winding on support; Rotor comprises rotating shaft and is fixed on the permanent magnet in rotating shaft, and permanent magnet is made up of several small magnets, and rotating shaft cross section Suo Shu, several magnets are enclosed in around rotating shaft according to S, N, S, N magnetic pole order.
2. peristaltic pump system according to claim 1, is characterized in that, described brushless servo motor comprises direct current brushless servo motor, AC servo motor.
3. peristaltic pump system according to claim 1 and 2, it is characterized in that, three-phase symmetrical star connection made by three groups of armature winding of described brushless servo motor, and connected by half H bridge electronic switch circuit respectively, described electronic switch circuit provides voltage by motor driver.
4. peristaltic pump system according to claim 3, is characterized in that, the voltage that described motor driver provides is with direct current or alternating current input; Before electric current input winding coil, voltage is changed into three-phase voltage by converter.
5. peristaltic pump system according to claim 4, is characterized in that, with converter in described electronic switch circuit, if input is alternating current, first convert the alternating current of input to direct current, direct voltage changes into three-phase voltage by converter again.
6. peristaltic pump system according to claim 5, is characterized in that, described converter is made up of 6 power transistors, and be one group between two, each component is upper arm and underarm, is connected respectively on the winding coil of motor.
7. the peristaltic pump system of brushless servo driving according to claim 1, it is characterized in that, described sensing element is also comprise sensor stator part and rotor portion, stationary part is installed on the stator of servomotor, rotor portion is installed on the rotor of servomotor, monitor the torque of brushless servo motor, position and velocity information, feed back to motor driver.
8. the peristaltic pump system of brushless servo driving according to claim 1, it is characterized in that, described sensing element adopts incremental encoder, or absolute type encoder, or revolves change, or tachometer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520102541.5U CN204376565U (en) | 2015-02-11 | 2015-02-11 | The peristaltic pump system that a kind of brushless servo drives |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520102541.5U CN204376565U (en) | 2015-02-11 | 2015-02-11 | The peristaltic pump system that a kind of brushless servo drives |
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| CN204376565U true CN204376565U (en) | 2015-06-03 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105007006A (en) * | 2015-08-14 | 2015-10-28 | 杜铁军 | Peristaltic pump system with performance being improved and service life being prolonged and application in blood component separation |
| CN105022422A (en) * | 2015-08-14 | 2015-11-04 | 杜铁军 | Regulation and control method of blood component separator and blood component separator |
| WO2021217705A1 (en) * | 2020-04-30 | 2021-11-04 | 深圳华星恒泰泵阀有限公司 | Peristaltic pump capable of flow control based on infrared induction |
-
2015
- 2015-02-11 CN CN201520102541.5U patent/CN204376565U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105007006A (en) * | 2015-08-14 | 2015-10-28 | 杜铁军 | Peristaltic pump system with performance being improved and service life being prolonged and application in blood component separation |
| CN105022422A (en) * | 2015-08-14 | 2015-11-04 | 杜铁军 | Regulation and control method of blood component separator and blood component separator |
| WO2021217705A1 (en) * | 2020-04-30 | 2021-11-04 | 深圳华星恒泰泵阀有限公司 | Peristaltic pump capable of flow control based on infrared induction |
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| C14 | Grant of patent or utility model | ||
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Effective date of registration: 20190624 Address after: 710075 No. 1103, Floor 11, Block H, Wangzuo Modern City, Tangyan Road, Xi'an High-tech Zone, Shaanxi Province Patentee after: Xi'an Ming Long Electronic Technology Co., Ltd. Address before: 710075 No. 1103, Floor 11, Block H, Wangzuo Modern City, Tangyan Road, Xi'an High-tech Zone, Shaanxi Province Patentee before: Du Tiejun |