CN1573108A - Linear compressor and control method thereof - Google Patents
Linear compressor and control method thereof Download PDFInfo
- Publication number
- CN1573108A CN1573108A CNA2004100066984A CN200410006698A CN1573108A CN 1573108 A CN1573108 A CN 1573108A CN A2004100066984 A CNA2004100066984 A CN A2004100066984A CN 200410006698 A CN200410006698 A CN 200410006698A CN 1573108 A CN1573108 A CN 1573108A
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- sensor coil
- piston
- core body
- time
- linearkompressor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
- F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
- F04B17/04—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors using solenoids
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
- F04B35/04—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric
- F04B35/045—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric using solenoids
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B2201/00—Pump parameters
- F04B2201/02—Piston parameters
- F04B2201/0201—Position of the piston
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B2203/00—Motor parameters
- F04B2203/04—Motor parameters of linear electric motors
- F04B2203/0402—Voltage
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
- Control Of Positive-Displacement Pumps (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Abstract
A linear compressor having a core combined to one end of a piston to detect a position of the piston reciprocally moving up and down. A first sensor coil and a second sensor coil detect the position of the core. The core has an upper core having a length shorter than one half of the length of the first sensor coil and a lower core having a length shorter than one half of the length of the second sensor coil in series. A method of controlling the operation of the linear compressor includes timing the upper core and the lower core driven by the piston through a stroke cycle, receiving the time and calculating a top dead center position based on the time or an offset value respectively, and controlling a piston stroke by varying the power driving the linear compressor according to the calculated top dead center or offset value.
Description
Technical field
The present invention relates to Linearkompressor and controlling method thereof.
Background technique
Linearkompressor is widely used in such as compression refrigerant in the refrigeration cycle such as refrigerator.Linearkompressor is measured the amplitude of stroke of piston, and by based on the analysis of the described measuring amplitude of stroke of piston is applied the running that electric current is controlled described piston to the drive motor of Linearkompressor.
Fig. 1 is the sectional view of the position-detection sensor of conventional linear compressor piston.As shown in Figure 1, position-detection sensor comprises sensor body 100, sensor coil 101 and core body support 102 and core body 103.
Sensor body 100 comprises sensor coil 101 in inside.Sensor coil 101 has the first sensor coil 101a that is connected serially to the second sensor coil 101b, and the second sensor coil 101b has identical inductance value, size and the number of turn with the first sensor coil 101a.The coil brace of being made by nonmagnetic substance 102 supports core body 103 and is bonded to the piston (not shown).
When the core body 103 that is bonded to compressor piston comes and goes when mobile along the endoporus of sensor body 100, produces in sensor coil 101 according to the back and forth movement of piston and to be scheduled to reactance.
Fig. 2 is the position of piston testing circuit of conventional linear compressor.As shown in Figure 2, two series connection sensor coils 101 connect with two divider resistance Ra and Rb parallel connection, and triangular pulse is imported as power supply 105.The pressure reduction of institute's component voltage that divider resistance Ra and Rb distribute is amplified by amplifier 104, and to detect maximum output voltage according to piston, coil 103 seesaws since the central point between the first sensor coil 101a and the second sensor coil 101b in the described piston.Analogue signal processor 106 receives the output pulse and handles the detection position of piston by prearranged signal from amplifier 104.
Fig. 3 has illustrated according to the output pulse from amplifier 104 shown in Figure 2 of the back and forth movement of Linearkompressor piston.As shown in Figure 3, has linear output character from the output voltage (line " a ") of amplifier for the back and forth movement of piston.Position of piston can detect with output voltage, because described output voltage and position of piston are proportional.
But the linear performance of the sensor circuit of conventional linear compressor is according to external environment condition (for example temperature and pressure) and the angle of inclination of change curve.If the sensor circuit of conventional linear compressor owing to external environment condition presents the linear performance of being represented by little angle of inclination (class liny " b "), may have the problem of colliding with cylinder valve according to the controlled piston that runs well in the high cooling capacity.The other variation of cooling capacity may too enlarge between the high state of cooling and the low state of cooling.
Summary of the invention
Therefore, an aspect of of the present present invention provides a kind of Linearkompressor, can accurately detect piston position regardless of external environment condition.
Additional aspects of the present invention and/or a bit part be elaborated from following specification, part is conspicuous from specification, perhaps can obtain understanding by implementing the present invention.
In order to realize that above-mentioned and/or other aspects of the present invention realize by a kind of Linearkompressor is provided, and comprising: core body, its end that is bonded to piston comes and goes the position of piston that moves up and down to detect; Detect first sensor coil and second sensor coil of core body position, wherein said core body comprises the top core body, first sensor coil that is shorter in length than series connection of described top core body and half of the second sensor coil length.
According to an aspect of the present invention, described core body comprises: the top core body; And lower core, it is apart from top core body predetermined spacing.
According to an aspect of the present invention, when described piston passed through the central point in piston back-and-forth movement path, the mid point between described top core body and the lower core was by the mid point between described first sensor coil and second sensor coil.
According to an aspect of the present invention, described Linearkompressor comprises: first branch road, and it comprises first sensor coil and predetermined first divider resistance of series connection; Second branch road, it comprises second sensor coil and predetermined second divider resistance of series connection; Act on the power supply of described first branch road and second branch road; And voltage comparator, its reception acts on voltage on first divider resistance and second divider resistance as input.
According to an aspect of the present invention, described voltage comparator receives the voltage that obtains from the relative terminal of each first sensor coil and second sensor coil as input.
According to an aspect of the present invention, described Linearkompressor also comprises controller, described controller is based on the position of upper dead center control piston, and described upper dead center is measured by the time difference of the mid point between coil initial point or first sensor coil and second sensor coil according to the back and forth movement of piston is used for the top core body by measurement central point.
According to an aspect of the present invention, described Linearkompressor also comprises controller, described controller is based on the position of upper dead center control piston, described upper dead center is used for the top core body according to the back and forth movement of piston by measurement described central point is by the coil initial point, perhaps time difference of the described mid point between first sensor coil and second sensor coil and measuring.
According to an aspect of the present invention, described Linearkompressor comprises controller, described controller is by detecting the position of upper dead center control piston based on the time difference, the described time difference is that the output of described voltage comparator becomes for 0 time for twice near piston is positioned at described upper dead center the time.
According to an aspect of the present invention, described Linearkompressor comprises controller, described controller is by detecting the position of upper dead center control piston based on the time difference, the described time difference is that the output of described voltage comparator becomes for 0 time near piston is positioned at described upper dead center the time.
According to an aspect of the present invention, described Linearkompressor also comprises controller, described controller detects deviant through the time difference of the coil initial point that is positioned at first sensor coil and the second sensor coil mid point or by the central point of measuring lower core through coil initial point elapsed time difference according to the back and forth movement of the piston central point by measuring the top core body, and described deviant represents that the central point of piston back-and-forth movement is offset the degree of predetermined center point.
According to another aspect of the present invention, above-mentioned and other aspects also can realize by the controlling method that a kind of Linearkompressor is provided, described Linearkompressor has an end core body that is bonded to the piston that moves up and down, and first sensor coil and second sensor coil that detect described core body position, described method comprises: form core body, described core body comprises the top core body and the lower core of each interval; The central point that is used for the top core body by measurement according to the back and forth movement of described piston detects the upper dead center of described piston through the time of the mid point between top core body and the lower core; Control described position of piston based on described upper dead center.
Description of drawings
Describe preferred embodiment in detail below by the ginseng accompanying drawing, above-mentioned aspect of the present invention and other characteristic will become more obvious.
Fig. 1 is the sectional view that is used for the position-detection sensor of conventional linear compressor piston;
Fig. 2 is the diagram that is used for the position detecting circuit of conventional linear compressor piston;
Fig. 3 is the amplifier waveform according to the back and forth movement of conventional linear compressor piston shown in Figure 2;
Fig. 4 is the sectional view that is used for according to the Linearkompressor position of piston detecting sensor of the embodiment of the invention;
Fig. 5 is the block diagram that is used for according to the Linearkompressor position of piston testing circuit of the embodiment of the invention;
Fig. 6 A to Fig. 6 C and Fig. 7 A to Fig. 7 C are the waveforms according to the voltage comparator of the back and forth movement of described Linearkompressor piston;
Fig. 8 is the voltage comparator output waveform according to the Linearkompressor piston position of the embodiment of the invention;
Fig. 9 A and Fig. 9 B have illustrated the piston position according to the embodiment of the invention corresponding with the time.
Embodiment
Describe the present invention in detail hereinafter with reference to accompanying drawing.Wherein same reference numerals is represented similar elements in the text.Explanation to embodiment is description of drawings the present invention in order to reference.
Fig. 4 is the sectional view that is used for according to the Linearkompressor position of piston detecting sensor of the embodiment of the invention.As shown in Figure 4, position-detection sensor 40 comprises sensor body 1, sensor coil 2, core body support 3 and core body 4.
Core body 4 comprises top core body 4a and the lower core 4b that has short predetermined length respectively.Top core body 4a and lower core 4b leave predetermined spacing mutually.Each length of top core body 4a and lower core 4b all should be preferably less than half of the length of the sensor coil 2 that comprises the first sensor coil 2a and the second sensor coil 2b.Top core body 4a is connected to lower core 4b by core body support 3.
When the core body 4 that is bonded to compressor piston when the endoporus of sensor body 1 moves back and forth, the motion in sensor coil 2 produces predetermined inductance in sensor coil 2 according to core body 4.
Fig. 5 is the block diagram that is used for according to the Linearkompressor position of piston testing circuit of the embodiment of the invention.As shown in Figure 5, described position detecting circuit comprises the first sensor coil 2a, the second sensor coil 2b, the first divider resistance R1, the second divider resistance R2, power supply 10, voltage comparator 11, DSP digital signal processor 12 and controller 13.
First branch road that 10 pairs of power supplys have the first sensor coil 2a and first divider resistance R2 series connection powers up, and second branch road with the second sensor coil 2b and second divider resistance R2 series connection is powered up.
Voltage comparator 11 receives the voltage that obtains from the respective terminal of each the first divider resistance R1 and the second divider resistance R2 signal V+ and comparison signal V-as a comparison respectively.And voltage comparator 11 can receive the voltage that obtains from the terminal of each the first sensor coil 2a and the second sensor coil 2b.
DSP digital signal processor 12 transfers to controller 13 according to the output of voltage comparator 11 with rectangular pulse, and controller 13 is based on the drive motor (not shown) of described rectangular pulse control Linearkompressor subsequently.
Fig. 6 A to Fig. 6 C and Fig. 7 A to Fig. 7 C are the waveforms according to the voltage comparator of the back and forth movement of described Linearkompressor piston.
Fig. 6 A represents the triangular pulse from power supply 10, and Fig. 6 B represents the positive terminal of input voltage comparator 11 and the waveform of negative terminal.
Fig. 6 B represent when the central point of top core body 4a (top core body initial point hereinafter referred to as) by the mid point (coil initial point hereinafter referred to as) between the first sensor coil 2a and the second sensor coil 2b or in the compression stroke process near the waveform of the voltage comparator 11 piston arrives upper dead center time.If apply triangular pulse from power supply 10, the inductance L 2 of the second sensor coil 2b becomes greater than the inductance L 1 of the first sensor coil 2a in the negative part process of triangular pulse input.Therefore, the input waveform V-of the negative terminal of input voltage comparator 11 has the longer time delay than the input waveform V+ of the positive terminal of input voltage comparator 11.
Shown in Fig. 6 C, as the input waveform V+ of the positive terminal of input voltage comparator 11 during greater than the input waveform V-of negative terminal, DSP digital signal processor 12 produces the rectangular wave Vd with high level.
Fig. 7 A to Fig. 7 C is the waveform when described top core body initial point tilts from described coil initial point towards the first sensor coil 2a.In this case, the inductance L 1 of the first sensor coil 2a becomes greater than the inductance L 2 of the second sensor coil 2b in the negative part process of triangular pulse input.Therefore, the input waveform V+ of the positive terminal of input voltage comparator 11 has the longer time delay than the input waveform V-shown in Fig. 7 B.Fig. 7 C illustrated from DSP digital signal processor 12 output with the corresponding rectangular wave Vd of waveform shown in Fig. 7 B.
Fig. 8 is the output waveform according to the voltage comparator of the Linearkompressor piston position of the embodiment of the invention.As shown in Figure 8, waveform " c " has three zero points and corresponding with Fig. 6 B and the described input waveform of Fig. 7 B.
When the mid point between top core body 4a and the lower core 4b (will be called as the core body initial point) during through described coil initial point, the output waveform of voltage comparator 11 is through the first zero.
If the top core body initial point of top core body 4a is through described coil initial point, the output V of voltage comparator 11
0Had for second zero point in top area, if the central point of lower core 4a is through described coil initial point, the output V of voltage comparator 11
0Had for the 3rd zero point at bottom section.
The output V that in the compression stroke process of piston, works as voltage comparator 11
0When being in for second zero point, piston is in the top origin position.In extending stroke procedure, also pass through described top origin position.Described top initial point is the fixed position, and in compression stroke process and once extending in the stroke procedure, by measuring twice amount of time through the top initial point of piston, can estimate the accurate position of upper dead center.
And, based on the output V of voltage comparator 11
0Through having in top area the second 0. endurance before twice of zero output, also can estimate the position of upper dead center.
Waveform among Fig. 8 " d " is the output waveform V of the external environment condition (for example temperature and pressure) of sensor voltage comparator 11 when changing
0Waveform " d " illustrates that do not change because of the change of external environment condition zero point.Therefore, can accurately find out upper dead center based on the top initial point that is not subjected to external environment influence, and can be based on the position of above-mentioned top initial point control piston.
Fig. 9 A and Fig. 9 B have illustrated the Linearkompressor stroke of piston amplitude according to the embodiment of the invention corresponding with the time.Shown in Fig. 9 A, stroke of piston shows as the sine wave according to the time.If core body initial point and coil initial point do not match and to the upper dead center inclination, the amplitude of stroke of piston shows as sine wave " F ", promptly be positioned at the mid point in back and forth movement path when piston, be offset.
Even for this situation, the stroke of piston also can be controlled, because can measure upper dead center by the measurement time of twice of top initial point based on piston.
If lower core 4b tilts and near the coil initial point, the bottom initial point is adjusted shown in Fig. 9 A upwards to the coil initial point.Adopt this structure, by measuring piston through time of twice of the bottom initial point that change and by measuring the time of piston through twice of top initial point, can detect deviant, described deviant is represented the degree of the central point skew predetermined center point in piston back-and-forth movement path.
Fig. 9 B has illustrated the output waveform Vd corresponding to the DSP digital signal processor 12 of curve E among Fig. 9 A and F.
And, even core body 4 includes only top core body 4a, the output V of voltage comparator 11
0Had for second zero point in top area, and can estimate upper dead center according to identical mode based on time by the top initial point.
According to embodiments of the invention, can measure and control the piston position of Linearkompressor.
Although described preferred embodiment for example and illustrative purposes above, not will be understood that the present invention is limited to above-mentioned explanation, but will be understood that and the present invention includes any modification that variation and replacement and the present invention only are defined by the claims.
Claims (22)
1. Linearkompressor comprises: the end that core body, described core body are bonded to piston comes and goes the position of piston that moves up and down to detect; Detect first sensor coil and second sensor coil of core body position, wherein said core body comprises:
Top core body, first sensor coil that is shorter in length than series connection of described top core body and half of the second sensor coil length.
2. Linearkompressor according to claim 1 is characterized in that, described core body also comprises:
Lower core, its described top of distance core body predetermined spacing.
3. Linearkompressor according to claim 2, it is characterized in that, when described piston passed through the central point in piston back-and-forth movement path, the mid point between described top core body and the lower core was by the mid point between described first sensor coil and second sensor coil.
4. Linearkompressor according to claim 1 is characterized in that, and is included:
First branch road, it comprises first sensor coil and predetermined first divider resistance of series connection;
Second branch road, it comprises second sensor coil and predetermined second divider resistance of series connection;
Act on the power supply of described first branch road and second branch road; With
Voltage comparator, its reception act on voltage on first divider resistance and second divider resistance as input.
5. Linearkompressor according to claim 4 is characterized in that, described voltage comparator receives the voltage that obtains from the relative terminal of each first sensor coil and second sensor coil as input.
6. Linearkompressor according to claim 1, it is characterized in that, also comprise controller, described controller is based on the position of upper dead center control piston, and described upper dead center is measured by the time difference of the mid point between coil initial point or first sensor coil and second sensor coil according to the back and forth movement of piston is used for the top core body by measurement central point.
7. Linearkompressor according to claim 2, it is characterized in that, also comprise controller, described controller is based on the position of upper dead center control piston, and described upper dead center is measured by the time difference of the described mid point between described coil initial point or first sensor coil and second sensor coil according to the back and forth movement of piston is used for described top core body by measurement described central point.
8. Linearkompressor according to claim 4, it is characterized in that, also comprise controller, described controller is by based on the position of time detecting upper dead center control piston, and the described time is that the output of described voltage comparator becomes 0 twice near piston is positioned at described upper dead center the time.
9. Linearkompressor according to claim 5, it is characterized in that, also comprise controller, described controller is by based on the position of time detecting upper dead center control piston, and the described time is that the output of described voltage comparator becomes 0 near piston is positioned at described upper dead center the time.
10. Linearkompressor according to claim 2, it is characterized in that, also comprise controller, described controller detects deviant through the time difference of the coil initial point that is positioned at first sensor coil and the second sensor coil mid point or by the central point of measuring lower core through coil initial point elapsed time according to the back and forth movement of the piston central point by measuring the top core body, and described deviant represents that the central point of piston back-and-forth movement is offset the degree of predetermined center point.
11. the controlling method of a Linearkompressor, described Linearkompressor have the core body that is bonded to piston one end that moves up and down, and first sensor coil and second sensor coil that detect described core body position, described method comprises:
Form core body, described core body comprises the top core body and the lower core of each interval;
Detect the upper dead center of described piston through the time of the mid point between top core body and the lower core by the central point of measuring the top core body according to the back and forth movement of described piston; With
Control described position of piston based on described upper dead center.
12. a method of controlling linear compressor operation, described Linearkompressor have the top core body and the lower core of the axle that is bonded to piston, and first sensor coil and second sensor coil that detect described piston position, described method comprises:
By the top core body of stroke cycle timing by piston actuated;
Time of reception and based on the position of described Time Calculation upper dead center; With
By changing the power that drives Linearkompressor, based on the upper dead center position control piston stroke that calculates.
13. method according to claim 12, it is characterized in that, wherein said calculating upper dead center, the process middle and upper part core body of compression stroke that is based on piston is through the mid point of first sensor coil and second sensor coil with at the process middle and upper part core body of the extension stroke of the piston described mid point institute elapsed time through first sensor coil and second sensor coil.
14. method according to claim 12, it is characterized in that, also comprise based on the difference of stroke of piston predetermined center point and virtual center point and determine deviant, the central point of wherein said deviant by measuring stroke procedure middle and lower part core body for the first time through the mid point of first sensor coil and second sensor coil with determine through the used time of the mid point of first sensor coil and second sensor coil for the second time subsequently.
15. a Linearkompressor piston controller comprises:
Sensor body has the annular of limiting hole;
Be arranged on the sensor coil in the described sensor body;
Core body, it has bottom and top, and described upper and lower is connected to the piston of coaxial setting in the hole of described sensor body, and wherein said bottom and top are less than half of described sensor coil length;
Controller, it is by based on determining that from the signal of described sensor coil upper dead center controls described position of piston, the position on the bottom of the described core body of described sensor coil sensing and the top of described core body.
16. control gear according to claim 15 is characterized in that, described controller is measured described top and is passed through the sensor coil mid point and pass through sensor coil mid point institute elapsed time subsequently in the compression stroke process of piston in extending stroke procedure.
17. control gear according to claim 15, it is characterized in that, also comprise controller, described controller is determined deviant based on the predetermined center point of stroke of piston and the difference between the virtual center point, and wherein said deviant is determined through the mid point institute elapsed time of sensor coil through the mid point and the secondary subsequently of sensor coil for the first time by the central point of measuring described bottom.
18. control gear according to claim 15 is characterized in that, described sensor coil comprises first sensor coil and second sensor coil.
19. control gear according to claim 18 is characterized in that, described first sensor coil has the identical number of turn, size and inductance value with second sensor coil.
20. control gear according to claim 19 is characterized in that, described control gear also comprises:
First branch road has the first predetermined divider resistance of connecting with first sensor coil;
Second branch road has the second predetermined divider resistance of connecting with second sensor coil.
21. control gear according to claim 20 is characterized in that, also comprises:
Voltage comparator, it receives voltage input and output comparison signal from first branch road and second branch road;
DSP digital signal processor, it receives described comparison signal and sends output signal based on described comparison signal to described controller.
22. control gear according to claim 21 is characterized in that, also comprises:
Controller, described controller equals 0 for the first time and determines upper dead center with institute's elapsed time between comparator signal equals 0 for the second time in the extension stroke procedure by measuring in the compression stroke process comparator signal.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2003-0037589A KR100520071B1 (en) | 2003-06-11 | 2003-06-11 | linear compressor and control method thereof |
| KR200337589 | 2003-06-11 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1573108A true CN1573108A (en) | 2005-02-02 |
| CN100375844C CN100375844C (en) | 2008-03-19 |
Family
ID=33297385
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100066984A Expired - Fee Related CN100375844C (en) | 2003-06-11 | 2004-02-25 | Linear compressor and control method thereof |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20050069417A1 (en) |
| EP (1) | EP1486670A3 (en) |
| JP (1) | JP4125693B2 (en) |
| KR (1) | KR100520071B1 (en) |
| CN (1) | CN100375844C (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100526607B1 (en) * | 2003-07-08 | 2005-11-08 | 삼성전자주식회사 | linear compressor and control method thereof |
| US7456592B2 (en) * | 2003-12-17 | 2008-11-25 | Lg Electronics Inc. | Apparatus and method for controlling operation of reciprocating compressor |
| KR100524475B1 (en) * | 2004-01-09 | 2005-10-31 | 삼성전자주식회사 | linear compressor and control method thereof |
| DE102004062300A1 (en) * | 2004-12-23 | 2006-07-13 | BSH Bosch und Siemens Hausgeräte GmbH | linear compressor |
| DE102008035954A1 (en) * | 2008-07-31 | 2010-02-04 | Beckhoff Automation Gmbh | Method and device for monitoring a displacement machine |
| US20230113754A1 (en) * | 2021-10-07 | 2023-04-13 | Epro Gmbh | Automatic Determination of Trigger Angle for Reciprocating Compressor Rod Drop Measurements |
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| JPS59117902A (en) * | 1982-12-23 | 1984-07-07 | S G:Kk | Positioning control device of fluid pressure cylinder |
| US4966533A (en) * | 1987-07-14 | 1990-10-30 | Kabushiki Kaisha Nagano Keiki Seisakusho | Vacuum pump with rotational sliding piston support |
| US5586332A (en) * | 1993-03-24 | 1996-12-17 | Intel Corporation | Power management for low power processors through the use of auto clock-throttling |
| US5342176A (en) * | 1993-04-05 | 1994-08-30 | Sunpower, Inc. | Method and apparatus for measuring piston position in a free piston compressor |
| CN1063887C (en) * | 1994-07-25 | 2001-03-28 | 大金工业株式会社 | High efficiency motor apparatus and method for controlling same |
| US6203292B1 (en) * | 1997-04-20 | 2001-03-20 | Matsushita Refrigeration Company | Oscillation-type compressor |
| BR9907432B1 (en) * | 1999-12-23 | 2014-04-22 | Brasil Compressores Sa | COMPRESSOR CONTROL METHOD, PISTON POSITION MONITORING SYSTEM AND COMPRESSOR |
| KR100361340B1 (en) * | 2000-05-15 | 2002-12-05 | 엘지전자 주식회사 | Controlling method for cpu clock |
| US6472848B2 (en) * | 2001-01-18 | 2002-10-29 | Hewlett-Packard Company | Reducing battery discharge current by throttling CPU power |
| JP3511018B2 (en) * | 2001-05-18 | 2004-03-29 | 松下電器産業株式会社 | Linear compressor drive |
| US7058824B2 (en) * | 2001-06-15 | 2006-06-06 | Microsoft Corporation | Method and system for using idle threads to adaptively throttle a computer |
| KR100411786B1 (en) * | 2001-09-03 | 2003-12-24 | 삼성전자주식회사 | Apparatus and method for controlling linear compressor |
| KR100491792B1 (en) * | 2002-02-28 | 2005-05-30 | 삼성전자주식회사 | Apparatus for controlling linear compressor and method thereof |
-
2003
- 2003-06-11 KR KR10-2003-0037589A patent/KR100520071B1/en not_active IP Right Cessation
-
2004
- 2004-02-19 EP EP04250885A patent/EP1486670A3/en not_active Withdrawn
- 2004-02-25 CN CNB2004100066984A patent/CN100375844C/en not_active Expired - Fee Related
- 2004-03-30 JP JP2004101444A patent/JP4125693B2/en not_active Expired - Fee Related
- 2004-04-13 US US10/822,686 patent/US20050069417A1/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| JP2005002990A (en) | 2005-01-06 |
| CN100375844C (en) | 2008-03-19 |
| KR100520071B1 (en) | 2005-10-11 |
| EP1486670A3 (en) | 2006-03-15 |
| JP4125693B2 (en) | 2008-07-30 |
| EP1486670A2 (en) | 2004-12-15 |
| US20050069417A1 (en) | 2005-03-31 |
| KR20040106753A (en) | 2004-12-18 |
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