CN105765476A - 3D sensorless conversion method and apparatus for pump differential pressure and flow - Google Patents
3D sensorless conversion method and apparatus for pump differential pressure and flow Download PDFInfo
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- CN105765476A CN105765476A CN201480065147.7A CN201480065147A CN105765476A CN 105765476 A CN105765476 A CN 105765476A CN 201480065147 A CN201480065147 A CN 201480065147A CN 105765476 A CN105765476 A CN 105765476A
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- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D7/00—Control of flow
Abstract
The present invention provides apparatus featuring a signal processor or processing module. The signal processor or processing module may be configured at least to: receive signaling containing information about calibrated motor speed and power data for a hydronic pumping system; and determine system pumping flow rate and pressure associated with an equivalent hydronic system characteristic variable, based at least partly on the signaling received. The signal processor or processing module may be configured to provide corresponding signaling containing information about the system pumping flow rate and pressure determined. The corresponding signaling may contain information used to control the hydronic pumping system.
Description
The cross reference of related application
This PCT application requires that the rights and interests of the SProvisional Patent that application number is 61/771,375 that this patent requirements was submitted on March 1st, 2013, both is quoted by entirety and is incorporated herein in the rights and interests that serial number is 14/091,795 patent that on November 27th, 2013 submits to.
The application further relates to following application:
The exercise question submitted to for 30th in December in 2010 is " Methodandapparatusforpumpcontrolusingvaryingequivalentsy stemcharacteristiccurve; AKAanadaptivecontrolcurve " serial number is the U. S. application of 12/982,289 (AttyDckt the 911-019.001.1//F-B&G-1001st).
Exercise question in December in 2012 submission on the 17th is " Dynamiclinearcontrolmethodsandapparatusforvariablespeedp umpcontrol " serial number is 13/717, the U. S. application of 086 (AttyDckt the 911-019.004.2//F-B&G-X0001st), it requires in the rights and interests that application number is 61/576,737 U.S. Provisional Application being abandoned now of December in 2011 submission on the 16th；
The U.S. Provisional Application of the exercise question submitted on March 19th, 2013 to be " Mixedtheoreticalanddiscretesensorlessconverterforpumpdif ferentialpressureandflowmonitoring " application number be 61/803,258 (AttyDckt the 911-019.0010.1//F-B&G-X0007th)；
The U.S. Provisional Application of the exercise question submitted on July 25th, 2013 to be " Sensorlessadaptivepumpcontrolwithself-calibrationapparat usforhydronicpumpingsystem " application number be 61/858,237 (AttyDckt the 911-019.012.1//F-B&G-X0010USth)；
These are all assigned to the assignee of present patent application, and quote them by arrangement and be incorporated to.
The application is based upon in the group of the technology disclosed in aforementioned related application.
Technical field
The present invention relates to the technology of a kind of operation for controlling pump；More particularly it relates to an for controlling such as to heat for family and business or the method and apparatus of pump of cooling water system.
Background technology
By example, Fig. 1 (a) illustrates that the known two stage speed change pump of prior art controls liquid circulation (hydronic) heating and cooling system, Fig. 1 (b) illustrate in prior art it is also known that water boosting pumping system.Recently, the problem about the energy saving in this pumping system and protection environment is solved significantly.Increasing concern is placed in liquid circulation pump control application, control with cooling water pump or the pump such as blood circulation, water boosting pumping system including heating for family and business, such as those shown in Fig. 1 (a) and 1 (b), it has it and is substantially probably dynamic and unknown feature.In order to reduce energy expenditure and running cost, it has been proposed that some known self-adaptation control methods.
In addition, the aforementioned serial number in December in 2010 submission on the 30th is 12/982, the U.S. Patent application (AttyDckt the 911-019.001.1//F-B&G-1001st) of 286 discloses for hydronic and cools down pumping system and the auto-adaptive control scheme for water boosting pumping system, consistent with what schematically show in Fig. 1 (a) and Fig. 1 (b).In Fig. 1 (b), liquid circulation pumping system includes controller and pump, and pump is set to relevant to having the process pipe being arranged in check-valves therein.In operation, the control signaling carrying out self-controller is responded by pump, and pumps fluid by processing pipe.Fig. 1 (c) illustrates have the curve chart with various function using known system curve equation draws, and system curve equation such as includes pump curve, on-demand system curve, constant control curve, equivalent system curve (as designed), Self Adaptive Control curve and distribution loss curve.Pressure set-point P* about the flow rate Q* required can pass through equationCalculate and/or determine, wherein, Self Adaptive Control curveFluid equations of motion can be passed through obtain together with moving average filter.By this adaptive approach, for obtaining the Self Adaptive Control curve equivalent system curve closer to the minimum pressure representing the required flow rate of needs maintenance of pressure set-point, what illustrate with Fig. 1 (c) is consistent.Due to this, pumping system operating energy can by using this adaptive approach to be conserved.
Additionally, it is well known in the art for the technology using the conversion of pump without sensor based on motor read output signal acquisition system pressure and flow.But, present at present known without sensor model or 1D space or in 2D discrete space formula express, this makes to obtain motor pressure from motor speed and power for algorithm development and signal conversion accuracy and flow rate is difficult.
Some known methods may be used for changing without sensor, the discrete model being calibrated including the pump utilized together with numerical scheme and system liquid loop-around data.This discrete method without Sensor Model is simply direct.Conversion accuracy can be held at less than in 5-10% error boundary well.On the other hand, there is also some theoretical methods based on pump and system features equation for the control application of some simple and easy pumps, wherein do not require the flow accurately that pump is controlled and pressure and calibration sensor is not provided.It is likely to be low to moderate the error boundary more than 10-15% as compromise, flow and pressure conversion accuracy.But, flow and pressure conversion accuracy are likely to deteriorate very fast with low speed.
Summary of the invention
In a word, the present invention provides a kind of being developed to circulate the flow system flow of pumping system and the 3D of pressure without sensor device and transducer to obtain about the motor signal based on pump and motor calibration data for dynamic liquid.System pressure and flow directly can solve three dimensions formula from any pair motor read output signal (such as speed, electric current, moment of torsion, power etc.).
By example, and according to some embodiments, the present invention can adopt the form of the equipment of such as pump controller etc, it is characterized in that signal processor, signal processor are configured at least:
Receive the signaling of the information comprising the motor speed about the calibration pumping system for liquid circulation and power data, and
It is at least partially based on the signaling of reception, uses the three-dimensional system pumping flow rate and pressure determined without sensor model or algorithm and be associated with equivalent liquid blood circulation characteristic variable.
Embodiments of the invention can also include one or more following characteristics:
Signal processor can be configured to supply the corresponding signal comprised about the system pumping flow rate being associated with the equivalent liquid blood circulation characteristic variable determined and the information of pressure.
Corresponding signaling could be included for controlling the information of liquid circulation pumping system.
Signal processor or processing module can be configured to be at least partially based on and process the signal relevant with the motor speed of calibration and power data, uses three-dimensional without sensor model or algorithm to determine that system pumps flow rate and pressure.
Signal processor or processing module can be configured to be at least partially based on process implements three-dimensional without sensor model or algorithm in liquid circulation pumping system from pump or the signaling that is driven into the liquid circulation of motor, mechanically and electrically power transformational relation between parameter relevant.
Signal processor or processing module can be configured at least the combination of some in following steps to implement three-dimensional without sensor model or algorithm:
Process the signaling relevant with equation 1:
γ(P,Q,W,n,Cv)=0 (1)
Wherein γ represent from pump to motor drive liquid circulation, mechanically and electrically between power transformational relation；
Process, decoupling and remap the signaling relevant to the energy transfer function of previous equations (1), adopt equation (1) to carry out the function of the explicit formula corresponding system flow rate of expression, system pressure or system differential pressure, motor power about motor speed and equivalent system feature；
The signaling rebuilding 3D functional dependence processed and be expressed and be solved in order to produce pumping flow rate and the pressure being associated with unknown system feature under given motor speed and power；
The corresponding 3D about motor power and the motor power of speed, pump flow rate and pump differential pressure processed and represented by equation 2.1,2.2 and 2.3 rebuilds the signaling that partition function is relevant, and equation 2.1,2.2,2.3 is as follows:
w(W,n,CV)=0 (2.1),
g(Q,n,CV)=0 (2.2) and
P (P, n, CV)=0 (2.3),
Wherein, w, g and p are that motor power W, system flow rate Q and pump differential pressure P are about motor speed n and equivalent system characteristic variable CVFunction；
Process the signaling relevant to about the discrete decoupling of 3D of the motor speed obtained from pumping system and the flow system flow of equivalent system feature, pump differential pressure and motor power and the partition function that remaps；
Process for W and the n motor reading that a pair time time in sight is given and obtain and unknown equivalent system characteristic variable C in previous equations 2.1VRelevant signaling；
Processing and obtain the signaling relevant to the pump differential pressure P and flow rate Q directly from equation 3.1 and 3.2, equation 3.1,3.2 is as follows:
And
WhereinIt is that the inverse of w remaps power function；
Directly with for fluid circulation system CVMotor power W and motor speed n given to processing and obtaining the signal relevant to pump differential pressure P and flow rate Q.
Equipment can comprise at least one memorizer including computer program code further；At least one memorizer described and computer program code are configured at least one processor and make equipment at least perform following operation:
Receive signaling；And
It is at least partially based on the signaling of reception, uses the three-dimensional system pumping flow rate determined without sensor model or algorithm and be associated with equivalent liquid blood circulation characteristic variable.
Equipment can include pump control or controller or adopt the form of pump control or controller, and pump controls or controller includes PID control, and it has signal processor or signal processor module.
According to some embodiments, the present invention can adopt the form of method, method includes the signaling for receiving the information comprising the motor speed about the calibration pumping system for liquid circulation and power data in signal processor, and it is at least partially based on the signaling of reception, use and three-dimensional in signal processor, determine the pumping flow rate and pressure that are associated with equivalent liquid blood circulation characteristic variable without sensor model or algorithm.
The present invention can also for example with the form of computer program, computer program has computer-readable medium, and computer-readable medium has the computer-executable code that is embedded for such as performing method when on the signal processing apparatus operating in the part forming this pump controller.By way of example, computer program can for example with the storage device of CD, floppy disk, memory stick, the form of memory card and currently known or in the future further exploitation the other types can being stored in by computer executable instructions on this computer-readable medium or kind.
Accompanying drawing explanation
Accompanying drawing includes illustrated below, and it is not necessarily drawn to scale；
Fig. 1 includes Fig. 1 a, Fig. 1 b and Fig. 1 c, and wherein, Fig. 1 a is the view that two stage speed change pump well known in the prior art controls hydronic or cooling system；Fig. 1 b is the view of water boosting pumping system well known in the prior art；And Fig. 1 c is consistent with prior art and for based on wherein at flow rate Q*Liquid circulation power=the dP*Q of lower saving*Self Adaptive Control curve perform the curve chart (GPM) of the relevant flow of the foot head pressure of adaptive control technology.
Fig. 2 is the block diagram of the equipment with the signal processor being configured to enforcement signal processing function according to some embodiments of the present invention.
Fig. 3 is the model of the conversion of the system pressure for the liquid circulation pumping system such as illustrated in Figure 1b and flow rate and motor electrical power and speed.
Fig. 4 is the flow rate Q (gpm) curve chart to pressure P (Ft or psi), has and is in and the pump differential pressure curve under the given speed of system features curve equation in equilibrium point.
Fig. 5 includes Fig. 5 a, Fig. 5 b, Fig. 5 c, be shown respectively about motor speed and the system flow rate of equivalent system feature, pump differential pressure, motor power 3D discrete distribution function.
Fig. 6 is the flow rate (gpm) curve chart to differential pressure (psi), it is shown that about the comparison of the pump differential pressure from transducer (dotted line) and sensor (solid line) of motor speed and the reading of flow rate.
Detailed description of the invention
3D is discrete to be changed without sensor
The present invention provides the discrete conversion equipment without sensor of 3D or the technology of a kind of new and uniqueness, and it is developed to obtain the flow system flow for dynamic liquid circulation pumping system about the motor signal based on pump and motor calibration data and pressure.System pressure and flow can pass through any pair motor read output signal (such as speed, electric current, moment of torsion, power etc.) and directly and more accurately solve.
By example, Fig. 2 illustrates the equipment as a whole being referred to generally at 10 according to some embodiments of the present invention, and it includes the signal processor or the signal processing module 12 that are combined with other signal processor circuit and element 14.Signal processor 12 can be configured to implement signal processing function according to some embodiments of the present invention.
In operation, signal processor 12 can be configured at least:
Receive the signaling of the information comprising the motor speed about the calibration pumping system for liquid circulation and power data；And
It is at least partially based on the signaling of reception, uses the three-dimensional system pumping flow rate and pressure determined without sensor model or algorithm and be associated with equivalent liquid blood circulation characteristic variable.
By example, signaling can receive from the data base of the storage of the part such as forming memory module.The motor speed of calibration and power data by such as processing that receive from particular motor during field test and can be determined from the signaling being associated wanting controlled centrifugal pump to receive shown in Fig. 1 b.Alternatively, the motor speed of calibration and power data can pass through the coherent signal that processes from reception in the such as representative motor a series of or one group of pump test by the maker of factory or maker and the part of the motor bought formed in the memory module being such as stored in motor, pump or pump controller or be merged in this motor.The scope of the present invention is not intended to be limiting the motor speed of motor speed and power data or the calibration how determining calibration and power data whether specific to given motor or one group or a series of motors etc..
Signal processor 12 can be additionally configured to provide the corresponding signal comprised about the system pumping flow rate determined and the information of pressure, for instance, in order to control the pump shown in one or more Fig. 1 a or the centrifugal pump shown in Fig. 1 b.
By further example, equipment 10 can adopt the pump controller shown in Fig. 1 a or the form of the controller shown in Fig. 1 b, or forms the part of the pump controller shown in Fig. 1 a or the controller shown in Fig. 1 b.The scope of the present invention is intended to the one or more elements including the liquid circulation pumping system shown in such as Fig. 1 a and Fig. 1 b, and embodiment is envisioned as the form that equipment 10 adopts one or more elements of the liquid circulation pumping system shown in such as Fig. 1 a and Fig. 1 b.
Signal processor or processing module can be configured to set forth that (such as consistent with shown in Fig. 2) implemented for implementing the present invention is three-dimensional without sensor assembly or algorithm with relative signal processing at least based on following:
The model of the energy conversion that Fig. 3 is shown schematically between system pressure or pump differential pressure and flow rate P and Q, the equivalent liquid blood circulation characteristic variable Cv of flow rate P and Q and the discharge part at pump and the motor power W and speed n of the other end of motor driving that locate at any time are associated.
Fig. 4 illustrates the pump about motor speed and power W and system liquid cycle characteristics, and it schematically shows the pump differential pressure curve under given speed and the power at equilibrium point place with system performance curve intersection or balance.Corresponding mathematic(al) representation can as equation 1 below present:
γ(P,Q,W,n,Cv)=0 (1)
Wherein γ represent from pump to motor drive liquid circulation, mechanically and electrically between power transformational relation, its substantially be to a certain degree probably complexity because motor and the efficiency of pump are about motor speed, system pressure and flow rate variation.
According to some embodiments of the present invention, can be used to express the function of corresponding system flow rate, system pressure or pump differential pressure, motor power about motor speed and equivalent system feature explicit formula by the 3D method of salary distribution of decoupling and the energy transfer function remapping equation 1.Then the reconstruction 3D function represented can be solved to be based at least partially on pump flow rate and the pressure that the pump of measurement and motor calibration data produce to be associated under given motor speed and power with any unknown system feature.Corresponding 3D reconstruction partition function about motor power and the motor power of speed, pump flow rate and pump differential pressure correspondingly can be represented by equation 2.1,2.2 and 2.3, as follows:
w(W,n,CV)=0 (2.1),
g(Q,n,CV)=0 (2.2) and
P (P, n, CV)=0 (2.3),
Wherein, w, g and p are that motor power W, system flow rate Q and pump differential pressure P are about motor speed n and equivalent system characteristic variable CVFunction.Flow system flow, pump differential pressure, motor power are about the discrete decoupling of 3D of the motor speed obtained from actual pumping system and equivalent system feature and remap partition function respectively shown in the 3D distribution function of Fig. 5.
For W and the n motor reading that a pair time time in sight is given, the unknown equivalent system characteristic variable Cv in equation 2.1 can numerically obtain.Then pump differential pressure P and flow rate Q can directly obtain from following equation 3.1 and 3.2:
And
WhereinIt is that the inverse of w remaps power function.Then pump differential pressure P and flow rate Q can be obtained either directly through the motor power W and motor speed n for fluid circulation system Cv.
The 3D for pump differential pressure and flow rate according to some embodiments of the present invention has been developed without sensor conversion and has tested in closed loop liquid blood circulation.Fig. 6 has illustrated the comparison correspondingly about the pump differential pressure correspondingly drawn from transducer (dotted line) and sensor (solid line) of motor speed and flow rate reading.
Pass through instrument calibration
Pump differential pressure data in equation 3 can be used to closed loop system, because by all of energy of system consumption from only relevant to pump differential pressure system dynamics friction loss.Can be used to collect pumping system calibration data together with flow transducer by example, differential pressure transducer or pressure transducer.
For the open cycle system with static swabbing pressure, the system pressure data calibrated on the spot can be employed directly.Pressure and the flow rate that calibration is caused can be used to by swabbing pressure for the open cycle system of the swabbing pressure with change, the pressure transducer in pumping side or the differential pressure transducer at pump place.
Equipment 10
By example, the function of equipment 10 can use hardware, software, firmware or its combination to implement.In typical software is implemented, equipment 10 can include one or more framework based on microprocessor, and it has the element 12 of such as at least one similar signal processing device or microprocessor.This enforcement based on microcontroller (or microprocessor) will be able to be programmed performing function described herein when limited number of time is tested by those skilled in the art.The scope of the present invention not purport is defined to the specific implementation mode of the technology using currently known or Future Development.It is that independent processor or processor module, the processor separated or processor module and some of combine that the scope of the present invention is intended to include the functional realiey of processor 12.
Equipment can also include other signal processing circuits or element 14, such as include random access memory (RAM) and/or the read only memory (ROM) of like 14, input/output device and control, and be connected to its data and address bus, and/or at least one input processor and at least one output processor.
Possible additional application/embodiment
According to present invention contemplates that embodiment, and the scope of the present invention is intended to include for example with the 3D for pump differential pressure and flow without the equipment of sensor conversion equipment and the form of equipment, one or more including in following:
3D numerical value is without transducer translating unit, for instance, it produces the system flow rate and the pump differential pressure that are associated with the unknown system about motor speed and power sense signal based on pump and motor calibration data.System pressure and flow can directly be solved, and more precisely, are solved according to any pair motor read output signal of such as speed, electric current, moment of torsion, power etc..
Multiple relevant 3D functions, such as such as motor power that is that represent in figs. 2 and 3 and that illustrate in Figure 5, pump differential pressure and flow rate.
Any or all potential 3D discrete digital remaps method, for instance such as 2D difference, 2D SPL etc..
Any or all potential 2D or 3D is discrete or numerical value inverse calculation, for instance the direct inverse operation of such as 1D or 2D, minimize, simple form etc..
Any or all closed loop or open loop liquid circulation pumping system, for instance such as main pumping system, two stage pump send system, water circulation system and pressure charging system.System described herein can include single region or multiple region.
About calibration of pump data, for instance for pump differential pressure and the flow rate data of the closed loop liquid blood circulation in this equipment, because of by all energy of system consumption from system dynamics friction loss, it is only relevant with pump differential pressure.Calibration data can include system pressure data or pump discharges partial pressure and corresponding flow rate.
About calibration of pump data, for instance for the open loop fluid circulation system in this equipment, about the pump differential pressure of respective motors data or system pressure and flow rate.Can directly obtain on the spot for the open cycle system with static swabbing pressure, system pressure data and flow rate.But, for the open cycle system with change swabbing pressure, can be used to calibrate the pressure owing to swabbing pressure causes and flow rate at a pressure transducer of pumping side or the differential pressure transducer at pump place.
Motor data about the measurement for this equipment, for instance such as potential motor electrically or mechanically read output signal can be included by any of motor speed, electric current, moment of torsion, power etc..
Liquid circulation signal about this equipment, for instance system pressure, pump differential pressure, areal pressure, system flow rate, region flow rate etc. can be included.
Control signal about transmission and wiring technique, for instance currently used all traditional sensing and transmitting device.Preferably, wireless sensor signal transmission technology optimizes being and favourable.
About the aforementioned pump pumping system for liquid circulation, for instance single-stage pump, circulator, one group of parallel sleeve pump or circulator, one group of series connection set pump or circulator or their combination can be included.
Regulate about flow system flow, for instance controlling valve, manually or automatically control circulator or their combination manually or automatically can be included.
The scope of the present invention
It should be understood that unless additionally stated here, no arbitrary characteristics, characteristic, alternative embodiment or the modification described herein in relation to specific embodiment can also apply with arbitrarily other embodiments described herein, use or merge.Further, accompanying drawing here is not necessarily drawn to scale.
Although the present invention is described by the example about centrifugal pump, but the scope of the present invention is intended to include to use about currently known or in the future by the pump of any type of exploitation or kind.
Although the present invention is described and shown already in connection with its exemplary embodiment, but wherein can carry out without departing from the spirit and scope of the present invention and it is carried out other additional and omission aforementioned and various.
Claims (13)
1. an equipment, including:
Signal processor or processing module, be configured at least:
Receive the signaling of the information comprising the motor speed about the calibration pumping system for liquid circulation and power data；And
It is at least partially based on the described signaling of reception, uses the three-dimensional system pumping flow rate and pressure determined without sensor model or algorithm and be associated with equivalent liquid blood circulation characteristic variable.
2. equipment according to claim 1, wherein, described signal processor or processing module are configured to supply the corresponding signaling comprising the information pumping flow rate and pressure about determined system.
3. equipment according to claim 2, wherein, corresponding signaling comprises the information for controlling described liquid circulation pumping system.
4. equipment according to claim 1, wherein, described signal processor or processing module are configured to be at least partially based on and process the described signaling relevant to the motor speed of described calibration and power data, use described three-dimensional without sensor model or algorithm to determine that described system pumps flow rate and pressure.
5. equipment according to claim 4, wherein, described signal processor or processing module be configured to be at least partially based on process in described liquid circulation pumping system from pump to motor or the relevant signaling of the liquid circulation of driving, mechanically and electrically power transformational relation between parameter to implement described three-dimensional without sensor model or algorithm.
6. equipment according to claim 5, wherein, it is described three-dimensional without sensor model or algorithm to implement that described signal processor or processing module are configured to be at least partially based on the process signaling relevant to equation 1, and equation 1 is as follows:
γ(P,Q,W,n,Cv)=0
Wherein γ represent from pump to motor drive liquid circulation, mechanically and electrically between described power transformational relation.
7. equipment according to claim 6, wherein, described signal processor or processing module are configured to be at least partially based on process, decoupling and remap the signaling relevant to the energy transfer function of equation (1) to implement described three-dimensional without sensor model or algorithm, adopt equation (1) to express the function about motor speed and the corresponding system flow rate of equivalent system feature, system pressure or system differential pressure, motor power with explicit formula.
8. equipment according to claim 7, it is described three-dimensional without sensor model or algorithm to implement that wherein said signal processor or processing module are configured to be at least partially based on the signaling processing and be expressed and be solved the reconstruction 3D functional dependence in order to produce pumping flow rate and the pressure being associated with unknown system feature under given motor speed and power.
9. equipment according to claim 8, wherein, described signal processor or processing module are configured to be at least partially based on the corresponding 3D about motor power and the motor power of speed, pump flow rate and pump differential pressure processing and being represented by equation 2.1,2.2 and 2.3 and rebuild the relevant signaling of partition function to implement described three-dimensional without sensor model or algorithm, and equation 2.1,2.2,2.3 is as follows:
w(W,n,CV)=0 (2.1),
g(Q,n,CV)=0 (2.2) and
P (P, n, CV)=0 (2.3),
Wherein, w, g and p are that motor power W, system flow rate Q and pump differential pressure P are about motor speed n and equivalent system characteristic variable CVFunction.
10. equipment according to claim 9, wherein said signal processor or processing module be configured to be at least partially based on process with about the discrete decoupling of 3D of the motor speed obtained from pumping system and the flow system flow of equivalent system feature, pump differential pressure and motor power with remap the relevant signaling of partition function to implement described three-dimensional without sensor model or algorithm.
11. equipment according to claim 10, wherein said signal processor or processing module are configured to be at least partially based on the unknown equivalent system characteristic variable C processing for W and the n motor reading that a pair time time in sight is given and obtaining and in equation 2.1VRelevant signaling is implemented described three-dimensional without sensor model or algorithm.
12. equipment according to claim 11, wherein, described signal processor or processing module are configured to be at least partially based on process and obtain the signaling relevant to the pump differential pressure P and flow rate Q directly from equation 3.1 and 3.2 to implement described 3D without sensor model or algorithm, and equation 3.1,3.2 is as follows:
And
WhereinIt is that the inverse of w remaps power function.
13. equipment according to claim 12, wherein, described signal processor or processing module are configured to be at least partially based on directly with for fluid circulation system CVGiven to motor power W and motor speed n processes and obtains the signaling relevant to pump differential pressure P and flow rate Q to implement described three-dimensional without sensor model or algorithm.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US14/091,795 | 2013-11-27 | ||
| US14/091,795 US10119545B2 (en) | 2013-03-01 | 2013-11-27 | 3-D sensorless conversion method and apparatus for pump differential pressure and flow |
| PCT/US2014/023267 WO2015080757A1 (en) | 2013-03-01 | 2014-03-11 | 3d sensorless conversion method and apparatus for pump differential pressure and flow |
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| Publication Number | Publication Date |
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| CN105765476A true CN105765476A (en) | 2016-07-13 |
| CN105765476B CN105765476B (en) | 2019-08-23 |
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| CN201480065147.7A Active CN105765476B (en) | 2013-11-27 | 2014-03-11 | For pumping the 3D of differential pressure and flow without sensor conversion method and equipment |
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| CN109964035A (en) * | 2016-09-05 | 2019-07-02 | 博泽沃尔兹堡汽车零部件有限公司 | The method and fluid pump of the fluid in fluid circuit for transporting motor vehicle |
| CN110088475A (en) * | 2016-09-12 | 2019-08-02 | 流体处理有限责任公司 | Automatic self-powered pump |
| CN112196856A (en) * | 2020-10-28 | 2021-01-08 | 山推工程机械股份有限公司 | Hydraulic system of electric transmission equipment and control method thereof |
| CN113614380A (en) * | 2018-11-08 | 2021-11-05 | 森西亚荷兰有限公司 | Electric submersible pump control |
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Also Published As
| Publication number | Publication date |
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| RU2685367C2 (en) | 2019-04-17 |
| CN105765476B (en) | 2019-08-23 |
| RU2016120200A (en) | 2018-01-09 |
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