CN107044483A - The system that firm type is used for the intelligent power amplifier of active magnetic - Google Patents
The system that firm type is used for the intelligent power amplifier of active magnetic Download PDFInfo
- Publication number
- CN107044483A CN107044483A CN201610906254.9A CN201610906254A CN107044483A CN 107044483 A CN107044483 A CN 107044483A CN 201610906254 A CN201610906254 A CN 201610906254A CN 107044483 A CN107044483 A CN 107044483A
- Authority
- CN
- China
- Prior art keywords
- power amplifier
- framework
- fin
- active magnetic
- cabinet
- 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
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C32/00—Bearings not otherwise provided for
- F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
- F16C32/0406—Magnetic bearings
- F16C32/044—Active magnetic bearings
- F16C32/0444—Details of devices to control the actuation of the electromagnets
- F16C32/0451—Details of controllers, i.e. the units determining the power to be supplied, e.g. comparing elements, feedback arrangements with P.I.D. control
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
- H03F3/21—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2322/00—Apparatus used in shaping articles
- F16C2322/39—General build up of machine tools, e.g. spindles, slides, actuators
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Mechanical Engineering (AREA)
- Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
Abstract
The system that a kind of firm type is used for the intelligent power amplifier of active magnetic, including IR2110 half-bridge drive circuits, Lo level is after " 0 ", Ho incoming levels is " 1 ", now VM1 is turned on, and bootstrap capacitor C1 passes through VM1, resistance Rg1 and power tube gate discharge.When Ho is low level, VM2 is open-minded, and gate charge is discharged by Rg1 and VM2.Behind of short duration dead band, Lo turns again to high level " 1 ", and so circulation is gone down；The IR2110 half-bridge drive circuits are arranged in control cabinet；The end difference that is projected on for operating puts structure with bars are additionally provided between the round platform portion to be swum with the flexible bar construction, and the body of rod of the link pin is also connected via pivoting support with the framework in addition.The radian that effectively prevent cover plate rotation lacks the secure equipment of safety to allow Field Force to manipulate the defect of regulation.
Description
Technical field
The present invention relates to power amplifier techniques field, more particularly to a kind of firm type is used for the intellectuality of active magnetic
The system of power amplifier.
Background technology
Active magnetic electro spindle is exactly to be combined together Active Magnetic Suspending Bearing by the structure of machine tool chief axis with motor,
Such as its axle of milling machine electro spindle is that hollow-core construction, Grinder Spindle its spindle nose have the mechanism for the emery wheel that is loaded.In active magnetic axle
Hold in system, the suspending power of rotor stability, the controller of system and power amplification are produced by adjusting the electric current in bearing coil
Device is closely related with suspending power.Under normal circumstances, the gap between rotor and bearing is running at high speed with rotor
And constantly change, it is necessary to it is real-time detection rotor change in displacement situation and be adjusted in time so that rotor is obtained
With stable suspersion and improve the reliability of system.Therefore, as the critical component for determining magnetic bearing performance.System controller and work(
Rate amplifier is always the focus that magnetic suspension bearing field scholars study.
Power amplifier has many kinds, and its main function is exactly that, in order to which small-signal is amplified, summary gets up to have electricity
Two kinds of flow pattern and voltage type power amplifier.Magnetic suspension bearing power amplifier is no exception, is also classified into current mode magnetic suspension work(
Rate amplifier and voltage type power amplifier, magnetic suspension bearing power amplifier are indispensable in magnetic suspension bearing whole system
Part, its main function be by the small output signal of front controller be converted into it is with certain energy, can
Power-type signal to being played control action by control unit, is also the important pivot for connecting electric signal and mechanical part.And work(
The IR2110 half-bridge drive circuits being arranged in control cabinet are frequently included in rate amplifier.
And IR2110 half-bridge drive circuits part is often arranged in control cabinet, and Field Force is allowed to easily perform, it is main
Control cabinet typically all with can rotating opening and close cover plate, can thus open cover plate and allow Field Force in control cabinet
IR2110 half-bridge drive circuit parts are cleared up or repaired；But the radian that such cover plate is rotated lacks safe secure
Equipment is adjusted to allow Field Force to manipulate.
The content of the invention
To solve the above problems, the invention provides the intelligent power amplifier that a kind of firm type is used for active magnetic
System, the radian that effectively prevent cover plate rotation lacks the secure equipment of safety to allow Field Force to manipulate lacking for regulation
Fall into.
In order to overcome deficiency of the prior art, the invention provides the intellectuality that a kind of firm type is used for active magnetic
The solution of the system of power amplifier, it is specific as follows：
The system that a kind of firm type is used for the intelligent power amplifier of active magnetic, including IR2110 half-bridge drivens electricity
Road, when Lo is high level " 1 ", the VM3 conductings of down tube output, S2 also successive conductives, now VCC pass through bootstrap diode VD1
With bootstrap capacitor C1, then charged through overload L and S2 to bootstrap capacitor C1.After C1 charging completes, an electricity is equivalent to
Source VC1；After Lo level is " 0 ", Ho incoming levels are " 1 ", and now VM1 is turned on, bootstrap capacitor C1 by VM1, resistance Rg1 and
Power tube gate discharge.When Ho is low level, VM2 is open-minded, and gate charge is discharged by Rg1 and VM2.By of short duration dead band
Afterwards, Lo turns again to high level " 1 ", and so circulation is gone down；The IR2110 half-bridge drive circuits are arranged in control cabinet；
The control cabinet contains the cabinet S3 and link pin S4 by connecting firmly and come with the top for being each connected in the cabinet S3
The cover plate S5 that the framework S31 phases of portion and bottom position are flexibly connected；It is located in addition, the link pin S4 contains on its roof position
For the projection S41 that operates, it is described for the projection S41 that operates in the side of the body of rod S40 away from the link pin S4
Upstream sequence contains end difference S411 and round platform portion S42, and the framework S31 is carried to be pacified in hollow bulb S30, the hollow bulb S30
Moveable banking stop S313 is filled with, the position between of the moveable banking stop S313 is provided with round table-like groove, the round platform
Round table-like ring set S310 is fixed with shape groove, positive is constituted for being combined with the round platform portion S42, it is described removable
Banking stop S313 also integrated moldings through the framework S31 be used for constitute the horizontal location face of the hollow bulb S30
Eye in S311 just can appear and be recovered to a pair of extension stem S3131 of the hollow bulb S30 to be located at the ladder together
Portion S411 Shang Gou roads S4110 is combined, and the framework S31 top surfaces are each provided with power motor S8 with lower surface,
The power motor S8 is fixedly connected with swingle, the swingle and connects firmly leading screw S81, in addition the same institutes of the leading screw S81
State moveable banking stop S313 phases silk to connect, also exactly described ditch road S4110 number is two pairs, and the ditch road S4110
According to circumferential direction equidistant arrangement, the Liang Gegou roads in the ditch road S4110, should on the annular central point Central Symmetry
Liang Gegou roads can be synchronously with the pair of extension stem S3131 with reference to allowing the leading screw S81 described moveable spacing
Piece S313 constitutes positive by the horizontal span to the round platform portion S42 bigger one, and the ditch road S4110 contains together
The bottom surface S52 of horizontal plane keeping parallelism keeps the side wall S51 of inclination with the same level face for being in bottom surface S52 both sides, in the silk
When thick stick S81 drives the pair of extension stem S3131 removals ditch road S4110, the round table-like ring set S310 is with described
Moveable banking stop S313 shifts to the horizontal span smaller one of the round platform portion S42 and allows the positive to separate；
Therefore the cover plate S5 may be constructed the whereabouts of closed state towards the cabinet S3, constitute closing with the cabinet S3
Whereabouts constitutes the whereabouts of closing into π arcs into the whereabouts for pulling open state of pi/2 radian and with the cabinet S3
The whereabouts for pulling open state of degree；
The power motor S8 with remained between the framework S31 in space, the space be filled with cushion pad S82；
The wall of the power motor S8 is provided with fin S83, and the fin S83 is through cushion pad S82 and the framework
S31 is connected, and one of the fin S83 connects firmly with the fin S84 phases for being arranged on the framework S31 mono- in addition；The fin
Annular groove road S85 is provided with S84 outer wall；
The body of rod S40 of the projection S41 for the operating and link pin S4 is integrated molding or passes through riveting
Mode is connected firmly；
It is described for the projection S41 that operates in the end difference S411 with being additionally provided with bars between the round platform portion S42
Trip is constituted with the extension stem S3131 and puts structure, and the body of rod S40 of the link pin S4 is also same described via pivoting support S6 in addition
Framework S31 is connected.
Because during cover plate is rotated, it becomes possible to synchronous to constitute for being flexibly connected the real-time spacing of whereabouts, in addition
It is such spacing to reach via positive, so such position-limited needle to for being not necessary to other instrument or equipment during operation
To reach, it is easily spacing in real time thus to reach structure, such spacing property with positive in addition, it is therefore prevented that shake, no
Staff is embarrassed to be discovered；Be additionally incorporated within it is spacing when extension stem S3131 be located at the ditch road S4110 bottom surface S52, this
Class is spacing to may make up more firm structure, prevents from breaking away from spacing framework because of external influence, spacing firm.This
The firm execution of structure there has also been guarantee.
Brief description of the drawings
Fig. 1 is the circuit connection diagram of the present invention
Fig. 2 is the structural representation of the control cabinet of the present invention.
Fig. 3 is the control cabinet part-structure schematic diagram of the present invention.
Embodiment
The present invention is described further below in conjunction with accompanying drawing.
1- Fig. 3 is understood with reference to the accompanying drawings, and a kind of firm type of the invention is used for the intelligent power amplifier of active magnetic
System, including IR2110 half-bridge drive circuits, when Lo is high level " 1 ", the VM3 conductings of down tube output, S2 is also led in succession
Logical, now VCC passes through bootstrap diode VD1 and bootstrap capacitor C1, is then charged through overload L and S2 to bootstrap capacitor C1.When
After C1 charging completes, a power supply VC1 is equivalent to；Lo level is after " 0 ", Ho incoming levels is " 1 ", and now VM1 is turned on, from
Lift electric capacity C1 and pass through VM1, resistance Rg1 and power tube gate discharge.When Ho is low level, VM2 is open-minded, and gate charge passes through
Rg1 and VM2 electric discharges.Behind of short duration dead band, Lo turns again to high level " 1 ", and so circulation is gone down；The IR2110 half-bridges drive
Dynamic circuit is arranged in control cabinet；
The control cabinet contains the cabinet S3 and link pin S4 by connecting firmly and come with the top for being each connected in the cabinet S3
The cover plate S5 that the framework S31 phases of portion and bottom position are flexibly connected；It is located in addition, the link pin S4 contains on its roof position
For the projection S41 that operates, it is described for the projection S41 that operates in the side of the body of rod S40 away from the link pin S4
Upstream sequence contains end difference S411 and round platform portion S42, and the framework S31 is carried to be pacified in hollow bulb S30, the hollow bulb S30
Moveable banking stop S313 is filled with, the position between of the moveable banking stop S313 is provided with round table-like groove, the round platform
Round table-like ring set S310 is fixed with shape groove, positive is constituted for being combined with the round platform portion S42, it is described removable
Banking stop S313 also integrated moldings through the framework S31 be used for constitute the horizontal location face of the hollow bulb S30
Eye in S311 just can appear and be recovered to a pair of extension stem S3131 of the hollow bulb S30 to be located at the ladder together
Portion S411 Shang Gou roads S4110 is combined, and the framework S31 top surfaces are each provided with power motor S8 with lower surface,
The power motor S8 is fixedly connected with swingle, the swingle and connects firmly leading screw S81, in addition the same institutes of the leading screw S81
State moveable banking stop S313 phases silk to connect, also exactly described ditch road S4110 number is two pairs, and the ditch road S4110
According to circumferential direction equidistant arrangement, the Liang Gegou roads in the ditch road S4110, should on the annular central point Central Symmetry
Liang Gegou roads can be synchronously with the pair of extension stem S3131 with reference to allowing the leading screw S81 described moveable spacing
Piece S313 constitutes positive by the horizontal span to the round platform portion S42 bigger one, and the ditch road S4110 contains
The bottom surface S52 of same level face keeping parallelism keeps the side wall S51 of inclination with the same level face for being in bottom surface S52 both sides, so has
Help the movement of the extension stem S3131, drive the pair of extension stem S3131 to remove the ditch road in the leading screw S81
When S4110, the round table-like ring set S310 shifts to the transverse direction of the round platform portion S42 with the moveable banking stop S313
Span smaller one and the positive is allowed to separate；Therefore the cover plate S5 may be constructed closed towards the cabinet S3
The whereabouts of state, with the cabinet S3 constitute closing whereabouts into pi/2 radian the whereabouts for pulling open state and
The whereabouts of closing is constituted into the whereabouts for pulling open state of π radians with the cabinet S3；
The power motor S8 with remained between the framework S31 in space, the space be filled with cushion pad S82,
The cushion pad S82 can alleviate the shake when power motor S8 operations；
The wall of the power motor S8 is provided with fin S83, and the fin S83 is through cushion pad S82 and the framework
S31 is connected, and one of the fin S83 connects firmly with the fin S84 phases for being arranged on the framework S31 mono- in addition；Thus can
The warming temperature occurred when enough operations the power motor S8 lowers；Annular groove is provided with the outer wall of the fin S84
Road S85.Refrigerated area can be so increased, improves rate of temperature fall.The projection S41's for the operating and link pin S4
Body of rod S40 is integrated molding or connected firmly by riveting method；
It is described for the projection S41 that operates in the end difference S411 with being additionally provided with bars between the round platform portion S42
Trip is constituted with the extension stem S3131 and puts structure, and the body of rod S40 of the link pin S4 is also same described via pivoting support S6 in addition
Framework S31 is connected.
The fin is rectangular-shape structure.
The fin S84 is list structure.
The mode of the integrated molding is impact style.
The bars are round bar structure.
The present invention is described in the way of brief description of the drawings above, it will be understood by those of skill in the art that the disclosure
Embodiments described above is not limited to, in the case of without departing from the scope of the present invention, can make a variety of changes, change and replace
Change.
Claims (5)
1. the system that a kind of firm type is used for the intelligent power amplifier of active magnetic, it is characterised in that including IR2110
Half-bridge drive circuit, IR2110 half-bridge drive circuits are by digitial controller part and analog controller part two large divisions's group
Into position sensor is sent in digitial controller after the position signalling collected is changed through A/D, passes through what is be previously set
Algorithm, suitable value is sent into digital regulation resistance to change the Kp in analog pid controller, Ki, these three parameters of Kd, simulation
Controller sends out conditioned signal to power amplifier, and signal gives execution unit electromagnetism iron wire after amplifying through power amplifier
Circle, produces suitable electromagnetic force by coil and enables rotor stable suspersion in induction machine；The IR2110 half-bridge drivens
Circuit is arranged in control cabinet；
The control cabinet contains cabinet and come with the link pin by connecting firmly with the top and bottom position for being each connected in the cabinet
The cover plate that the framework put mutually is flexibly connected；In addition, the link pin contain be located on its roof position for the projection that operates,
The projection for operating contains end difference and round platform portion, institute in the square upstream sequence of the body of rod away from the link pin
Framework is stated with hollow bulb, moveable banking stop is installed in the hollow bulb, the moveable banking stop works as meta
Put and be provided with round table-like groove, round table-like ring set is fixed with the round table-like groove, type is constituted for being combined with the round platform portion
Face coordinates, and the moveable banking stop also integrated molding the level for being used for constituting the hollow bulb through the framework
Eye in locating surface just can appear and be recovered to a pair of extension stems of the hollow bulb to be located at together on the end difference
Ditch road is combined, and the frame roof surface is each provided with power motor with lower surface, and the power motor is fixedly connected
Have and connect firmly leading screw on swingle, the swingle, the leading screw connects with the moveable banking stop phase silk in addition, also has just
The number for being the ditch road is two pairs, and the ditch road is according to circumferential direction equidistant arrangement, and the Liang Gegou roads in the ditch road are closed
In the annular central point Central Symmetry, the Liang Gegou roads can be synchronously with the pair of extension stem with reference to allowing the silk
The moveable banking stop is constituted positive, the ditch by thick stick by the horizontal span to the round platform portion bigger one
The bottom surface that same level face keeping parallelism is contained on road keeps the side wall of inclination with the same level face for being in bottom surface both sides, in the leading screw
When driving the pair of extension stem removal ditch road, the round table-like ring set shifts to institute with the moveable banking stop
State the horizontal span smaller one in round platform portion and allow the positive to separate；Therefore the cover plate can be with towards the cabinet
Constitute the whereabouts of closed state, constitute the whereabouts of closing into the place for pulling open state of pi/2 radian with the cabinet
Part and with the cabinet constitute closing whereabouts into π radians the whereabouts for pulling open state；
The power motor with remained between the framework in space, the space be filled with cushion pad；
The wall of the power motor is provided with fin, and the fin is connected through cushion pad with the framework, in addition the fin
One of piece mutually connects firmly with the fin for being arranged on the framework one；Annular groove road is provided with the outer wall of the fin；
The body of rod of the projection for operating and the link pin is integrated molding or connected firmly by riveting method；
The end difference that is projected on for being used for operating comes with the extension stem structure with being additionally provided with bars between the round platform portion
Cheng You puts structure, and the body of rod of the link pin is also connected via pivoting support with the framework in addition.
2. firm type according to claim 1 is used for the system of the intelligent power amplifier of active magnetic, its feature
It is rectangular-shape structure to be the fin.
3. firm type according to claim 1 is used for the system of the intelligent power amplifier of active magnetic, its feature
It is list structure to be the fin.
4. firm type according to claim 1 is used for the system of the intelligent power amplifier of active magnetic, its feature
The mode for being the integrated molding is impact style.
5. firm type according to claim 1 is used for the system of the intelligent power amplifier of active magnetic, its feature
It is round bar structure to be the bars.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610906254.9A CN107044483A (en) | 2016-10-18 | 2016-10-18 | The system that firm type is used for the intelligent power amplifier of active magnetic |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610906254.9A CN107044483A (en) | 2016-10-18 | 2016-10-18 | The system that firm type is used for the intelligent power amplifier of active magnetic |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107044483A true CN107044483A (en) | 2017-08-15 |
Family
ID=59543025
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610906254.9A Pending CN107044483A (en) | 2016-10-18 | 2016-10-18 | The system that firm type is used for the intelligent power amplifier of active magnetic |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107044483A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112152499A (en) * | 2020-09-08 | 2020-12-29 | 珠海格力电器股份有限公司 | Control device and method of power amplifier and motor |
| CN112272013A (en) * | 2020-11-02 | 2021-01-26 | 富芯微电子有限公司 | Operational amplifier chip with noise reduction function |
| EP3736460A4 (en) * | 2018-01-05 | 2021-09-29 | LG Electronics Inc. | Magnetic bearing control device and control method |
| US11889917B2 (en) | 2020-06-24 | 2024-02-06 | Lg Electronics Inc. | Shoe management apparatus |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201499137U (en) * | 2009-09-09 | 2010-06-02 | 武汉新瑞科电气技术有限公司 | Power amplifier |
| CN202091047U (en) * | 2011-03-22 | 2011-12-28 | 淄博职业学院 | High-voltage suspension electromagnetic valve driving circuit based on IR2110 technology |
| CN202486578U (en) * | 2011-12-02 | 2012-10-10 | 西安华科航空技术有限公司 | Servo controller |
| CN103560730A (en) * | 2013-11-11 | 2014-02-05 | 上海航天测控通信研究所 | Stepper motor driver and driving method thereof |
| JP2014152829A (en) * | 2013-02-06 | 2014-08-25 | Shimadzu Corp | Magnetic bearing device and vacuum pump |
| CN104934877A (en) * | 2015-06-26 | 2015-09-23 | 吴美俊 | Distribution box capable of high-efficiency cooling |
| CN205304585U (en) * | 2015-11-25 | 2016-06-08 | 宁波中焱光伏科技有限公司 | IR2110 drive circuit |
-
2016
- 2016-10-18 CN CN201610906254.9A patent/CN107044483A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201499137U (en) * | 2009-09-09 | 2010-06-02 | 武汉新瑞科电气技术有限公司 | Power amplifier |
| CN202091047U (en) * | 2011-03-22 | 2011-12-28 | 淄博职业学院 | High-voltage suspension electromagnetic valve driving circuit based on IR2110 technology |
| CN202486578U (en) * | 2011-12-02 | 2012-10-10 | 西安华科航空技术有限公司 | Servo controller |
| JP2014152829A (en) * | 2013-02-06 | 2014-08-25 | Shimadzu Corp | Magnetic bearing device and vacuum pump |
| CN103560730A (en) * | 2013-11-11 | 2014-02-05 | 上海航天测控通信研究所 | Stepper motor driver and driving method thereof |
| CN104934877A (en) * | 2015-06-26 | 2015-09-23 | 吴美俊 | Distribution box capable of high-efficiency cooling |
| CN205304585U (en) * | 2015-11-25 | 2016-06-08 | 宁波中焱光伏科技有限公司 | IR2110 drive circuit |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3736460A4 (en) * | 2018-01-05 | 2021-09-29 | LG Electronics Inc. | Magnetic bearing control device and control method |
| US11401970B2 (en) | 2018-01-05 | 2022-08-02 | Lg Electronics Inc. | Magnetic bearing control device and control method |
| US11889917B2 (en) | 2020-06-24 | 2024-02-06 | Lg Electronics Inc. | Shoe management apparatus |
| CN112152499A (en) * | 2020-09-08 | 2020-12-29 | 珠海格力电器股份有限公司 | Control device and method of power amplifier and motor |
| CN112152499B (en) * | 2020-09-08 | 2021-09-28 | 珠海格力电器股份有限公司 | Control device and method of power amplifier and motor |
| CN112272013A (en) * | 2020-11-02 | 2021-01-26 | 富芯微电子有限公司 | Operational amplifier chip with noise reduction function |
| CN112272013B (en) * | 2020-11-02 | 2022-11-15 | 富芯微电子有限公司 | Operational amplifier chip with noise reduction function |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107044483A (en) | The system that firm type is used for the intelligent power amplifier of active magnetic | |
| CN106571733A (en) | Multifunctional magnetic support multiplying device | |
| CN104879383A (en) | Protection method for large-capacity magnetic-suspension energy-storing fly wheel rotor after falling down | |
| CN207326373U (en) | One kind tears screw mechanism open automatically | |
| CN107086832A (en) | Ball mill QM driving control systems and startup method based on permagnetic synchronous motor | |
| JP2006118384A (en) | Vertical-shaft windmill | |
| CN107993466A (en) | A kind of traffic congestion traffic lights instruction device based on big data all-in-one machine | |
| CN106499283A (en) | Switch board based on vertical shaft maglev | |
| CN106655643A (en) | Stabilizing device for aiming at active magnetic bearing quick-response intelligent PID controller | |
| CN208939399U (en) | A kind of electronic engineering external power supply protective device | |
| CN106382188A (en) | Intelligent magnetic suspension control system | |
| CN106499580A (en) | Enhancement mode magnetic suspension wind runs equipment | |
| CN109569020A (en) | A kind of wet process lithium battery diaphragm white oil recyclable device | |
| CN206209400U (en) | A kind of illuminated controller | |
| CN106793595A (en) | Operation electronic equipment based on magnetic bearing | |
| CN203071811U (en) | Bootstrap start circuit based on IR2130 | |
| CN106438692A (en) | System used for magnetic-suspension energy supply device | |
| CN208594909U (en) | A kind of reluctance motor driving pumping unit with metering communication function | |
| CN106481506A (en) | Runtime for magnetic suspending wind turbine generator | |
| CN109570029A (en) | A kind of iron sand extract equipment being easily installed with multilayer screening | |
| CN203855912U (en) | Inflatable pedestrian crossing railing | |
| CN209022071U (en) | A kind of industrial robot chassis of good damping effect | |
| CN206368280U (en) | A kind of yarn fabric dewaterer | |
| CN103037601A (en) | Current detection method of traffic signal lights | |
| CN207166212U (en) | A kind of optic power machine for being used to place rotary ornaments |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170815 |