CN101470047A - Testing bench for thermostat durability - Google Patents
Testing bench for thermostat durability Download PDFInfo
- Publication number
- CN101470047A CN101470047A CNA200710094623XA CN200710094623A CN101470047A CN 101470047 A CN101470047 A CN 101470047A CN A200710094623X A CNA200710094623X A CN A200710094623XA CN 200710094623 A CN200710094623 A CN 200710094623A CN 101470047 A CN101470047 A CN 101470047A
- Authority
- CN
- China
- Prior art keywords
- thermostat
- programmable logic
- logic controller
- boiler
- water temperature
- 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
- 238000012360 testing method Methods 0.000 title claims abstract description 54
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 84
- 238000010438 heat treatment Methods 0.000 claims abstract description 17
- 230000001105 regulatory effect Effects 0.000 claims description 7
- 238000000034 method Methods 0.000 abstract description 28
- 230000008569 process Effects 0.000 abstract description 18
- 238000001816 cooling Methods 0.000 abstract description 12
- 230000004087 circulation Effects 0.000 description 8
- 239000002826 coolant Substances 0.000 description 7
- 238000006243 chemical reaction Methods 0.000 description 6
- 230000002950 deficient Effects 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 239000012188 paraffin wax Substances 0.000 description 4
- 239000001993 wax Substances 0.000 description 4
- 102100026205 1-phosphatidylinositol 4,5-bisphosphate phosphodiesterase gamma-1 Human genes 0.000 description 3
- 101000691599 Homo sapiens 1-phosphatidylinositol 4,5-bisphosphate phosphodiesterase gamma-1 Proteins 0.000 description 3
- 230000009471 action Effects 0.000 description 3
- 125000004122 cyclic group Chemical group 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 238000004088 simulation Methods 0.000 description 3
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000000202 analgesic effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
Images
Landscapes
- Control Of Temperature (AREA)
Abstract
The invention discloses a durability test bed for thermostats, comprising a step motor, a swing arm, a hot water box and a cold water box, which are respectively arranged on a worktable. The durability test bed can further comprises a programmable controller connected with the step motor via a control cable, wherein the programmable controller sets a control program, the step motor rotates positively or reversely according to the control program, to drive the swing arm connected with the step motor to swing left and right, to arrange a thermostat arranged on the swing arm into the hot water box or the cold water box, thereby heating or cooling the thermostat circularly according to the heating or cooling time set by the programmable controller. The durability test bed for thermostats has compact structure, low cost, high precision, automatic controllable test process and wide application for the durability tests of various thermostats.
Description
Technical field
The present invention relates to a kind of thermostat testing table, particularly a kind of testing bench for thermostat durability.
Background technology
Thermostat is a vitals of car engine cooling system.Thermostat is installed in the inflow point of liquid coolant, and it is to control a kind of automatic switch that whether is opened or closed by the temperature decision that liquid coolant enters engine automatically, works in usually between 0～125 ℃ the temperature.Thermostat adopts the autovalve structural shape that moves with coolant temperature, and it has a paraffin by-pass valve.When coolant temperature descended, autovalve was closed and by-pass valve is opened, and prevented that liquid coolant from flowing through engine and circulating, and made the engine temperature that raises hastily.When coolant temperature raise, autovalve was opened and by-pass valve cuts out, and liquid coolant circulates by heating radiator, reduces engine temperature.Expand when the paraffin of thermostat inside is heated, shrink when being cooled.Produce pressure during heating paraffin, overcome spring force and make opening of valves; In paraffin when cooling, shrink, and spring force worked and valve cuts out.
Meeting took place to leak the wax situation after thermostat used a period of time, caused thermostat to lose efficacy thus, caused engine temperature high, and and then initiation engine failure.This kind phenomenon occurring, is because the endurance quality of thermostat own does not reach requirement.Engine manufacturer is if introduce this defective thermostat, will be to self finally being that the consumer causes tremendous loss.For guaranteeing the quality requirements of thermostat, engine manufacturer just must pick out qualified thermostat supplier, removes underproof thermostat supplier.For this reason, just must carry out the thermostat test, in official hour, not leak wax to guarantee thermostat to water pump.
According to automobile industry standard " wax formula thermosistor technical conditions " (QC/T 29061-1992) regulation, during the thermostat durability process of the test was done, under the temperature conditions of regulation, thermostat must carry out 200 permanance cyclic tests.In this process of the test, thermostat does not damage, and it is qualified just to be judged to be product; Otherwise it is defective just to be judged to be product.
At present, the conventional method to the thermostat durability test is: prepare each one of hot water storgae, cold rinse bank, thermostat is placed in the swing arm.Drag swing arm with motor, thermostat is moved into heat, cold rinse bank heating cooling alive at the appointed time respectively.At first, thermostat is placed hot water storgae, it is fully opened, then, by swing arm it is moved in the cold rinse bank again, it is fully cooled off.In this manner, motor drags swing arm and constantly thermostat is moved in the hot water storgae and open, move in the cold rinse bank and cool off.So circulation is until off-test.This kind thermostat durability testing equipment adopts traditional electric manual mode control to the control of swing arm time and water temperature, needs in the process of the test manually constantly intervene, and its shortcoming is: complex structure, control accuracy are low, the error that exists human factor to cause; In addition, also there are problems such as volume is big, power consumption is many, cost height, are not suitable for medium and small laboratory and use.
Summary of the invention
At above-mentioned defective, the technical matters that the present invention solves is, a kind of automaticity height, accurate, the lower-cost testing bench for thermostat durability of measuring accuracy are provided.
For solving above technical matters, testing bench for thermostat durability provided by the invention comprises stepper motor, swing arm, boiler, cold water storage cistern, places respectively on the worktable: also comprise Programmable Logic Controller, it is connected with stepper motor by umbilical cable; Described Programmable Logic Controller is set control program, described stepper motor rotates forward or backwards according to this control program, and drive the described swing arm that connects on the described stepper motor and swing, the thermostat of placing in the described swing arm is moved in described boiler or the cold water storage cistern heating of setting according to described Programmable Logic Controller or circularly thermostat is heated cool time or cool off.
Preferably, testing bench for thermostat durability of the present invention: also comprise well heater, temperature sensor, it places described boiler respectively, and links to each other with described Programmable Logic Controller by cable separately; Described Programmable Logic Controller is set the water temperature in the described boiler, and described temperature sensor feeds back to described Programmable Logic Controller with the actual water temperature in the described boiler; Described Programmable Logic Controller calls the PID function water temperature setting value in the described boiler and value of feedback is carried out computing, controls described well heater the water temperature in the described boiler is regulated.
Testing bench for thermostat durability of the present invention is simulated the thermostat startup or is closed environment with boiler, cold water storage cistern.Thermostat is placed boiler, make even, the fully heating of thermostat, the assurance thermostat is reliably opened; Thermostat is placed the cold water water tank, thermostat is fully cooled off, guarantee that it reliably closes.Can simulate the thermostat working environment well with hot and cold water tank, its equipment is easy to obtain, and cost is also very cheap.The present invention changes traditional electric manual control mode, introduce Programmable Logic Controller, by the control program of downloading, accurately set the time that thermostat heats at every turn, cools off, effectively the control step motor swings, and circularly thermostat is moved into the boiler heating or move in the cold water storage cistern to cool off, and the assurance thermostat reliably opens or cuts out, whole process need not manual intervention, realizes the automatic control of process of the test.Programmable Logic Controller has that volume is little, precision is high, assembling is flexible, antijamming capability is strong, reliability is high, is suitable for characteristics such as rugged surroundings use, is used for the control step motor to swing, and can obtain very high control accuracy.The present invention introduces the PLC control technology, has realized the automatic control of thermostat durability process of the test, thereby has simplified procedures, and reduces operating cost, avoids the influence of human error to test result.
In the preferred version of the present invention, in boiler, add well heater, temperature sensor, set water temperature in the described boiler by Programmable Logic Controller, simultaneously, temperature sensor feeds back to Programmable Logic Controller with the actual water temperature in the boiler, and call the PID function water temperature setting value and value of feedback are carried out computing, control heater heats water temperature, forms the closed-loop control of water temperature in the boiler.Thus, keep the constant of water temperature in the boiler, when thermostat places boiler, can be fully, thermally equivalent, thus simulated the environment of thermostat unlatching more realistically, warranty test result's reliability.
Testing bench for thermostat durability of the present invention, compact conformation, with low cost, precision is higher, test process can be controlled automatically, is adapted to the test of various types of thermostat durabilities.
Description of drawings
Fig. 1 is a testing bench for thermostat durability structural drawing of the present invention;
Fig. 2 is a control flow chart of the present invention;
Fig. 3 is the structural drawing of the preferred embodiment of the present invention;
Fig. 4 is water temperature control principle figure of the present invention;
Fig. 5 is a water temperature control flow chart of the present invention.
Embodiment
Testing bench for thermostat durability of the present invention shown in Figure 1, comprise Programmable Logic Controller 1 (Programmable Logical Controller, PLC), stepper motor 2, swing arm 3, boiler 4, cold water storage cistern 5, umbilical cable 6, worktable 7.
As shown in Figure 1, Programmable Logic Controller 1, stepper motor 2, swing arm 3, boiler 4, cold water storage cistern 5 place respectively on the worktable 7.Programmable Logic Controller 1 is connected with stepper motor 2 by umbilical cable 6, and control step motor 2 rotates forward or backwards, and the swing arm 3 that drive is connected on the stepper motor 2 swings.Thermostat 8 places in the swing arm 3, drags swing arm 3 by stepper motor 2 and moves, and can will heat in thermostat 8 immigration boilers 4, the cold water storage cistern 5 or cool off.With the working environment that boiler 4 and cold water storage cistern 5 simulation thermostats 8 are opened or closed, can guarantee that thermostat 8 heats or cooling evenly, fully, its experimental enviroment fidelity is better; Boiler 4 is easy to obtain with cold water storage cistern 5, can significantly reduce experimentation cost.
Among the present invention, also introduced Programmable Logic Controller 1, it is connected with stepper motor 2 by umbilical cable 6.Programmable Logic Controller 1 download control program, the rotation forward or backwards of control step motor 2, and drive swing arm 3 and swing moves into described boilers 4 with thermostat 8 circularly or moves in the described cold water storage cistern 5.According to the time that Programmable Logic Controller 1 is set, thermostat 8 heating in boiler 4 respectively, or cooling in cold water storage cistern 5, constantly circulation is until off-test.Adopt 1 pair of thermostat of Programmable Logic Controller 8 constantly circulation heating or cooling, can check thermostat 8 reliably be opened under high temperature or low temperature condition, close, and do not need manual intervention in the test, realized the automatic control of process of the test.
According to " wax formula thermosistor technical conditions " (QC/T 29061-1992) regulation, the time that thermostat 8 heats at every turn, cools off is respectively 43S, 18S, and cycle index is no less than 200 times.Therefore, among the present invention, it is 200 that Programmable Logic Controller 1 is set cycle index, and thermostat 8 heats in each circulation, be set at 43S, 18S cool time respectively.According to the specific (special) requirements of different endurancings, heating, the cool time of thermostat 8 are set flexibly by Programmable Logic Controller 1 in cycle index and each circulation.In the cycle index of setting: thermostat 8 if can open reliably, cut out, and it is qualified to be judged to be product; Otherwise it is defective to be judged to be product.
Figure 2 shows that control flow of the present invention, effect is, determines the method that Programmable Logic Controller 1 is controlled stepper motor 3 in each cyclic process.Particularly, its control procedure is as follows:
S1) begin test;
S2) position that stepper motor is reached home, stepper motor automatically turns to boiler;
S3) stepper motor rested on boiler 43 seconds;
S4 makes stepper motor return to origin position, and stepper motor automatically turns to cold water storage cistern;
S5) stepper motor rested on cold water storage cistern 18 seconds;
S6) cycle index adds 1;
S7) judge whether to reach the setting cycle index
If enter the S8 step;
If not, return the S2 step;
S8) finish test.
The control program of above-mentioned control procedure adopts the ladder diagram establishment usually, and its advantage is: program structure is similar to the method that is electrically connected of relay, and is very directly perceived, also is easy to establishment.About order set and the relay configuration method of PLC, can correspondingly consult relevant handbook, do not repeat them here.
In the above-mentioned embodiment, at first by boiler 4, the cold water storage cistern 5 simulation thermostats 8 normal environment of opening: thermostat 8 is placed boiler 4, make its even, fully heating, whether check thermostat 8 is reliably opened; Thermostat 8 is placed cold water water tank 5, it is fully cooled off, whether check thermostat 8 reliably closes.Also change traditional electric manual control mode, introduce Programmable Logic Controller 1, pass through download control program, accurately set heating, cool time in thermostat 8 each circulation, the rotation direction and the starting and stopping time of effective control step motor 2, control swing arm 3 moves into thermostat 8 boiler 4 heating or moves into cooling in the cold water storage cistern 5, and whether check thermostat 8 can reliably be opened or be closed.So constantly circulation, according to thermostat 8 whether can be normally, reliably open or close, and then judge whether product qualified.Need not manual intervention in the whole process, realize the automatic control of thermostat 8 endurancing processes, simplify procedures thus, reduce operating cost, and avoid the influence of human error test findings.
For simulating thermostat 8 environment when opening better, preferably, the present invention adopts 1 pair of water temperature of Programmable Logic Controller to control.According to test stone, thermostat 8 normal temperature of opening are about 85 ℃.Therefore, whether check thermostat 8 can reliably be opened under analgesic state, and the water temperature in the necessary maintenance boiler 4 is in 85 ± 2 ℃ of scopes.The endurancing of thermostat 8 is generally carried out at normal temperatures, and the water temperature in the cold water storage cistern 5 generally can not surpass 40 ℃, can the water temperature in the cold water storage cistern 5 not controlled.For these reasons, in this preferred implementation, only the water temperature in the boiler 4 is controlled.
Usually, the PLC product all has the PID function, as the PLC of Japanese Nissan Electric Co., Ltd production.Therefore, the present invention can carry out the PID closed-loop control to the water temperature in the boiler 4 easily.Carrying out the PID operational factor when being provided with, the parameter setting of P, I, D is even more important, the quality of the fine or not direct relation control of its setting.P represents proportional gain, and ratio is regulated and set greatly, when deviation appears in system, can accelerate to regulate, and reduce error, but excessive proportional gain can cause system's instability; I represents integral time, and integral time is more little, and integral action is just strong more, otherwise a little less than the big more then integral action of I; D represents derivative time, and differential is regulated leading control action, and can improve the dynamic property of system suitable derivative time.About should specifically setting of pid control parameter according to different product, do not belong to discussion scope of the present invention about the knowledge of this respect, do not repeat them here.
As shown in Figure 3, testing bench for thermostat durability of the present invention is done following improvement: add well heater 9, temperature sensor 10 in boiler 4, it links to each other with described Programmable Logic Controller 1 by cable respectively, and Programmable Logic Controller 1 carries out the PID closed-loop control by calling the PID function to the water temperature in the boiler 4.Preferably: well heater 9 adopts electrothermal tube, and its heating is rapid, and price is lower, and its power is regulated by PID, regulated by bidirectional thyristor; Temperature sensor 10 adopts the Pt100 temperature sensor, and it has higher sensitivity.
Water temperature control principle figure of the present invention as shown in Figure 4 comprises: Programmable Logic Controller 1, PID function module 11, D/A D/A converter module 12, well heater 9, water 13, temperature sensor 10, A/D analog-to-digital conversion module 14.Programmable Logic Controller 1 reads the water temperature setting value Ui in the boiler 4, and it is deposited in the PID function module 11.The actual water temperature Uo that temperature sensor 10 is gathered in the boiler 4 is value of feedback Uk through A/D analog-to-digital conversion module 14 analog to digital conversion, is input to Programmable Logic Controller 1.Programmable Logic Controller 1 calls PID function module 11, and the setting value Ui and the value of feedback Uk of water temperature carried out computing; The output valve of PID function module 11 outputs to 9 pairs of water temperatures of well heater and regulates after 12 conversions of D/A D/A converter module.According to above PID loop control theory, Programmable Logic Controller 1 constantly control heater is adjusted the water temperature in the boiler 4, and makes within its 85 ± 2 ℃ of scopes that remain on setting.
As shown in Figure 5, the present invention's process that water temperature is carried out PID control is:
T1) PLC1 deposits water temperature setting value Ui in PID relevant data address.
T2) PLC1 reads water temperature value of feedback Uk, and deposits PID relevant data address in.
T3) PID carries out computing according to water temperature setting value Ui, value of feedback Uk.
T4) PID computing output valve is the execution value through digital-to-analog conversion.
T5) well heater 9 is regulated water temperature.
T6) temperature sensor 10 is gathered actual water temperature Uo.
T7) actual water temperature Uo is water temperature value of feedback Uk through analog to digital conversion.
T8) water temperature value of feedback Uk input PLC1;
And return the T2 step.
Usually, the PID instruction moves in regularly circulating and calls, and moves once at regular intervals, and can make amendment its interval time according to the concrete condition of test.According to said process, Programmable Logic Controller 1 calls the PID function, and the PID function carries out computing according to water temperature setting value Ui, water temperature value of feedback Uk, the process that water heats in 9 pairs of boilers 4 of control heater, thus keep the constant of water temperature.
In the above-mentioned preferred implementation, in boiler 4, added and comprised well heater 9, temperature sensor 10, by the water temperature in the Programmable Logic Controller 1 setting boiler 4, and call the PID function well heater 9 is controlled, simultaneously, temperature sensor 10 feeds back to Programmable Logic Controller 1 with the actual water temperature in the boiler 4, forms the closed-loop control of water temperature in the boiler 4.Thus, keep the constant of water temperature in the boiler 4, when thermostat 8 places boiler, can be fully, thermally equivalent, thus simulated the environment that thermostat 8 is opened, the confidence level of raising test findings more realistically.
Above-mentioned preferred implementation, the endurancing of thermostat 8 is the test down of normal temperature state.Under the environment temperature condition with higher, water temperature might surpass 40 ℃ in the cold water storage cistern 5, can add cooling device, controls cooling device to water temperature in the cold water storage cistern 5 by Programmable Logic Controller 1.Control method that it is concrete and process, similar with the control method of water temperature in 1 pair of boiler 4 of above-mentioned Programmable Logic Controller.
Testing bench for thermostat durability of the present invention, because adopting 1 pair of stepper motor swing process of Programmable Logic Controller and water temperature controls, its control accuracy obviously improves: other similar testing equipment time precision is 1 second, and temperature control precision reaches 0.5 ℃, 1 millimeter of position control accuracy; And time control accuracy of the present invention reaches the microsecond level, and temperature control precision reaches 0.1 ℃, and position control accuracy reaches 0.1 millimeter.In addition, testing bench for thermostat durability volume of the present invention is small and exquisite, compact conformation, cheap, intelligent degree height, very is suitable for medium and small laboratory and uses.
The above only is a preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (4)
1, a kind of testing bench for thermostat durability comprises stepper motor, swing arm, boiler, cold water storage cistern, places respectively on the worktable, it is characterized in that: also comprise Programmable Logic Controller, it is connected with stepper motor by umbilical cable; Described Programmable Logic Controller is set control program, described stepper motor rotates forward or backwards according to this control program, and drive the described swing arm that connects on the described stepper motor and swing, the thermostat of placing in the described swing arm is moved in described boiler or the cold water storage cistern heating of setting according to described Programmable Logic Controller or circularly thermostat is heated cool time or cool off.
2, testing bench for thermostat durability according to claim 1 is characterized in that: also comprise well heater, temperature sensor, it places described boiler respectively, and links to each other with described Programmable Logic Controller by cable separately; Described Programmable Logic Controller is set the water temperature in the described boiler, and described temperature sensor feeds back to described Programmable Logic Controller with the actual water temperature in the described boiler; Described Programmable Logic Controller calls the PID function water temperature setting value in the described boiler and value of feedback is carried out computing, controls described well heater the water temperature in the described boiler is regulated.
3, testing bench for thermostat durability according to claim 2 is characterized in that: described well heater is an electric heater.
4, testing bench for thermostat durability according to claim 2 is characterized in that: described temperature sensor is the Pt100 temperature sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200710094623XA CN101470047A (en) | 2007-12-25 | 2007-12-25 | Testing bench for thermostat durability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200710094623XA CN101470047A (en) | 2007-12-25 | 2007-12-25 | Testing bench for thermostat durability |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101470047A true CN101470047A (en) | 2009-07-01 |
Family
ID=40827726
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA200710094623XA Pending CN101470047A (en) | 2007-12-25 | 2007-12-25 | Testing bench for thermostat durability |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101470047A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102207427A (en) * | 2010-11-23 | 2011-10-05 | 浙江豪情汽车制造有限公司 | Detection device for thermoatat |
| CN102768120A (en) * | 2012-08-07 | 2012-11-07 | 长春轨道客车股份有限公司 | Method for detecting functions of thermostat of air-conditioning heating system |
| CN103115757A (en) * | 2012-09-06 | 2013-05-22 | 浙江吉利罗佑发动机有限公司 | Engine thermolator durable intelligent testing device and control method thereof |
| CN103292985A (en) * | 2013-05-17 | 2013-09-11 | 曲阜天博汽车零部件制造有限公司 | Thermostat service life simulation testing machine |
| CN116841332A (en) * | 2023-06-06 | 2023-10-03 | 迪森(常州)能源装备有限公司 | Autoclave temperature control method and system for carbon fiber product molding |
| CN118464420A (en) * | 2024-06-21 | 2024-08-09 | 瓦勒汽车热管理系统(安徽)有限公司 | Thermostat durability test bed |
-
2007
- 2007-12-25 CN CNA200710094623XA patent/CN101470047A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102207427A (en) * | 2010-11-23 | 2011-10-05 | 浙江豪情汽车制造有限公司 | Detection device for thermoatat |
| CN102207427B (en) * | 2010-11-23 | 2012-11-07 | 浙江豪情汽车制造有限公司 | Detection device for thermoatat |
| CN102768120A (en) * | 2012-08-07 | 2012-11-07 | 长春轨道客车股份有限公司 | Method for detecting functions of thermostat of air-conditioning heating system |
| CN103115757A (en) * | 2012-09-06 | 2013-05-22 | 浙江吉利罗佑发动机有限公司 | Engine thermolator durable intelligent testing device and control method thereof |
| CN103115757B (en) * | 2012-09-06 | 2015-03-18 | 浙江吉利罗佑发动机有限公司 | Engine thermolator durable intelligent testing device and control method thereof |
| CN103292985A (en) * | 2013-05-17 | 2013-09-11 | 曲阜天博汽车零部件制造有限公司 | Thermostat service life simulation testing machine |
| CN103292985B (en) * | 2013-05-17 | 2016-08-31 | 曲阜天博汽车零部件制造有限公司 | Thermoregulator life-span simulation test machine |
| CN116841332A (en) * | 2023-06-06 | 2023-10-03 | 迪森(常州)能源装备有限公司 | Autoclave temperature control method and system for carbon fiber product molding |
| CN116841332B (en) * | 2023-06-06 | 2024-02-06 | 迪森(常州)能源装备有限公司 | Autoclave temperature control method and system for carbon fiber product molding |
| CN118464420A (en) * | 2024-06-21 | 2024-08-09 | 瓦勒汽车热管理系统(安徽)有限公司 | Thermostat durability test bed |
| CN118464420B (en) * | 2024-06-21 | 2024-10-18 | 瓦勒汽车热管理系统(安徽)有限公司 | Thermostat durability test bed |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101470047A (en) | Testing bench for thermostat durability | |
| CN101866190B (en) | Temperature cascade PID (Proportion Integration Differentiation) control system of high-temperature high-pressure testing device and control method thereof | |
| CN112051830B (en) | Servo driver aging test method, system, device and storage medium | |
| CN104345752A (en) | Electric rice cooker and control method and heat insulation control device thereof | |
| CN103115757B (en) | Engine thermolator durable intelligent testing device and control method thereof | |
| Osadchyy et al. | Laboratory Stand for Investigation of Liquid Level Microprocessor Control Systems | |
| CN104729979A (en) | High temperature water vapor oxidation experiment device capable of accurately controlling oxygen content | |
| KR102560634B1 (en) | How to control a PLC using a PC program | |
| Al-Andzar et al. | PID Control for Temperature and Motor Speed Based on PLC | |
| CN108646808B (en) | Temperature control system of dyeing machine and temperature control method thereof | |
| CN110470415B (en) | Temperature impact test equipment for temperature sensor and control method thereof | |
| CN107091735B (en) | Wall-mounted boiler waterway detection method and device | |
| US6385599B1 (en) | Method and apparatus for a fuzzy self-adaptive control system | |
| CN206519147U (en) | A kind of epoxy vinyl ester resin scale up test rapid temperature rise and drop system | |
| CN204406225U (en) | Based on the water level auto control system of configuration software | |
| CN201912917U (en) | Micro high pressure reaction kettle experimental facility for directly liquefying coal | |
| CN202268122U (en) | Open type hot water boiler heating experiment system | |
| CN208506588U (en) | A kind of debugging apparatus of temperature controller | |
| CN114993610A (en) | A test device and method for measuring flow resistance | |
| CN112817349A (en) | Black body temperature control method | |
| Messmer et al. | Virtual test bench by linking the HSLU-NODES lab and the FHNW-energy research lab | |
| CN114719431B (en) | Uniform temperature rise heating method | |
| CN103706285A (en) | Method and system for adding antioxidant for edible oil | |
| CN202974621U (en) | Combined solar detector | |
| DE202012100635U1 (en) | control device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Open date: 20090701 |