CN105652103A - Methods and system for testing, calibrating and verifying corrected value of solenoid valve control device - Google Patents
Methods and system for testing, calibrating and verifying corrected value of solenoid valve control device Download PDFInfo
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- CN105652103A CN105652103A CN201410629868.8A CN201410629868A CN105652103A CN 105652103 A CN105652103 A CN 105652103A CN 201410629868 A CN201410629868 A CN 201410629868A CN 105652103 A CN105652103 A CN 105652103A
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Abstract
Provided are methods and a system for testing, calibrating and verifying the corrected value of a solenoid valve control device. The invention provides a method for testing the corrected value of a solenoid valve control device, comprising the following steps: acquiring a first corrected value under a first temperature, wherein the first corrected value makes the difference between the actual value of current flowing through an electromagnetic coil in an electromagnetic valve under the first temperature and a target control current of the electromagnetic valve within an allowable range; acquiring a second corrected value under a second temperature, wherein the second corrected value makes the difference between the actual value of current flowing through the electromagnetic coil in the electromagnetic valve under the second temperature and the target control current of the electromagnetic valve within an allowable range; and solving parameters in a relational expression representing the change of the corrected value with temperature based on the first temperature, the first corrected value, the second temperature and the second corrected value.
Description
Technical field
The present invention relates to method and system that a kind of modified value to the magnetic valve controller with function of trembling is tested, demarcates and verified.
Background technology
In transmission system, when the control curent change of magnetic valve, magnetic valve aperture can change, owing to when magnetic valve aperture is relatively stable, magnetic dot is in stationary state, therefore, when magnetic valve aperture changes, magnetic dot from static to the time of response of movement can be excessively long. For this reason, in the middle of magnetic valve controller, function of trembling is introduced. Tremble and it is, when magnetic valve aperture is relatively stable, do not allow magnetic dot static, but allow magnetic dot tremble up and down at settling position place, just there is no the obstruction of stiction like this when magnetic valve aperture changes, thus the promptness of response can not be affected. In the solenoid control of reality, the target control electric current of magnetic valve and the actual current of solenoid that flows through in magnetic valve often and inconsistent, therefore, the pilot circuit to magnetic valve is needed to revise, so that the difference between the target control electric current of magnetic valve and the actual current of solenoid flow through in magnetic valve is in the scope allowed. But, constantly testing modified value in laboratory is a very loaded down with trivial details job, can expend the time that tester is a large amount of.
Summary of the invention
In order to overcome the above problems, the present invention provides a kind of method of modified value testing magnetic valve controller, the method comprises: obtain the first modified value at the first temperature, and this first modified value makes the difference flow through at the first temperature between the actual current value of solenoid in magnetic valve and the target control electric current of magnetic valve in the scope allowed; Obtaining the 2nd modified value at the 2nd temperature, the 2nd modified value makes the difference flow through at the second temperature between the actual current value of solenoid in magnetic valve and the target control electric current of magnetic valve in the scope allowed; Based on the first temperature, the first modified value, the 2nd temperature, the 2nd modified value, obtain the parameter characterized in the temperature variant relational expression of modified value.
Present invention also offers a kind of method of modified value demarcating magnetic valve controller, by the storer being stored in the control unit of magnetic valve controller according to the parameter obtained in the testing method of the present invention.
Present invention also offers the method for the modified value of a kind of verifying electromagnetic control valve device, comprising: read according to the parameter stored in the scaling method of the present invention; Measure current temperature; According to described parameter and measured temperature, obtain modified value; After being revised by magnetic valve controller according to described modified value, measure the actual current value flowing through solenoid in magnetic valve; Whether the difference between the current value that inspection institute measures and the target control electric current of magnetic valve is in the scope allowed.
Present invention also offers the system of a kind of modified value testing magnetic valve controller, this system comprises: upper computer, for providing predetermined target control electric current to magnetic valve controller; Power supply, for providing electric power to magnetic valve controller; Magnetic valve controller, comprise multiple input/output interface, control unit, adjustable unit and the signal generator that trembles, electric current for flowing through solenoid in magnetic valve by control carrys out the aperture of Controlling solenoid valve, and by the signal that trembles, magnetic dot is trembled up and down at settling position place, wherein, this adjustable unit is used under the control of the control unit, revise magnetic valve controller and regulate the current value flowing through solenoid in magnetic valve, so that the difference between the target control electric current of this current value and magnetic valve is in the scope allowed; Cylinder body; Magnetic valve, is placed in cylinder body; Temperature sensor, for the temperature detected in cylinder body, and is input to control unit by detected value; Current sense device, for detecting the electric current of the solenoid flowing through in magnetic valve, and is input to control unit by detected value.
The tester's working efficiency testing modified value in laboratory can be improved greatly by the present invention, reduce the test duration testing modified value in laboratory, automatically testability also ensure that accuracy and the reliability of data widely simultaneously, and test, demarcate and be verified as one, thus decrease the replacement of test environment, better improve test efficiency.
Accompanying drawing explanation
Fig. 1 illustrates the schematic diagram to the system that the modified value of magnetic valve controller is tested according to the present embodiment.
Fig. 2 is exemplified with the setting of CAN flag in CAN communication between the upper computer according to the present embodiment and magnetic valve controller.
Fig. 3 illustrates the schematic diagram of the operating process of the upper computer according to the present embodiment.
Fig. 4 illustrates the schematic diagram of the treatment scheme of the demarcation modified value according to the present embodiment.
Fig. 5 illustrates the schematic diagram of the modified value that the checking according to the present embodiment is demarcated.
Embodiment
Embodiments of the invention are described with reference to the accompanying drawings. In the following description, many details have been set forth to make person of ordinary skill in the field more fully understand and realize the present invention. But, person of ordinary skill in the field is apparent that, the realization of the present invention can not have some in these details. Further, it should be understood that the present invention is not limited to the specific embodiment introduced. On the contrary, it may be considered that implement the present invention by the arbitrary combination of characteristic sum key element described below, and no matter whether they relate to different embodiments. Therefore, aspect below, feature, embodiment and advantage use for illustrative purposes only, and should not regard key element or the restriction of claim as, unless clearly proposed in the claims.
Fig. 1 shows for the schematic diagram to the system that the modified value of magnetic valve controller is tested.This system comprises upper computer, power supply, magnetic valve controller, cylinder body, magnetic valve, temperature sensor, current sense device.
Upper computer is such as PC, for providing predetermined target control electric current to magnetic valve controller, carries out communication by CAN (ControllerAreaNetwork, controller local area network) between this upper computer and magnetic valve controller.
Power supply is used for providing electric power to magnetic valve controller.
Magnetic valve controller, comprise multiple input/output interface, ECU (ElectronicControlUnit, electronically controlled unit), adjustable unit and the signal generator etc. that trembles, electric current for flowing through solenoid in magnetic valve by control carrys out the aperture of Controlling solenoid valve, and make magnetic dot not be in stationary state by the signal that trembles, but tremble up and down at settling position place. This adjustable unit is used under the control of electronically controlled unit, magnetic valve controller is revised the current value regulating and flowing through solenoid in magnetic valve, such as, can be voltage transitions device or adjustable resistor circuit etc.
Cylinder body can be cylinder or hydro-cylinder.
Magnetic valve is placed in cylinder body, adjusts the direction of gas or liquid, flow, speed and/or other parameter by the aperture of magnetic valve controller Controlling solenoid valve.
Temperature sensor, is arranged in cylinder body, for the temperature detected in cylinder body, and detected value is input to ECU.
Current sense device, such as, can be flow through the electric current of the solenoid in magnetic valve, and detected value is input to ECU by oscilloscope detection.
Next, will by reference to the accompanying drawings the treating processes of this system be described.
By the CAN communication between upper computer and magnetic valve controller arranges CAN flag, specify different operations. Such as, as shown in Figure 2, can specify, when CAN flag is set as 1 by upper computer, instruction magnetic valve controller carries out the test of modified value, and when CAN flag is set as 2 by upper computer, instruction magnetic valve controller carries out the demarcation of modified value, when CAN flag is set as 3 by upper computer, instruction magnetic valve controller carries out the checking of modified value. It will be appreciated by those skilled in the art that, it is only schematic to the setting of the value of CAN flag herein, but not restrictive. Hereinafter, it is specifically described for the test of modified value, demarcation and these three kinds of operations of checking.
First initialize CAN device, when being initialized to merit, connect between ECU (lower computer) in upper computer and magnetic valve controller, next, upper computer carrys out specified operation mode (test, demarcation or checking) by setting the value of CAN flag, data are exchanged with lower computer, and the data that process receives from lower computer. About upper computer operating process as shown in Figure 3.
When specifying the test carrying out modified value in CAN flag, the control signal comprising target control electric current from upper computer is input in the register in magnetic valve controller (not illustrating, such as, be built in Dither chip).
, it is possible to by Temperature-controlled appliance (not shown), the temperature in cylinder body is adjusted to T1, then under temperature T1, modified value is tested. such as, the current value of the solenoid in magnetic valve is currently flow through by current sensor measurement, measured current value is compared by ECU with corresponding target control electric current, if the difference between measured current value and target control electric current is greater than the scope allowed, then such as variable resistance circuit is controlled by ECU, from the initial resistivity value of variable resistance circuit, the resistance value of this variable resistance circuit of fine adjustments, it is only exemplary herein, the regulative mode of the control electric current of magnetic valve is not limited to the resistance value adjusting of variable resistance circuit, such as can also carry out control voltage transmodulator by ECU, thus fine adjustments step-up ratio or step down ratio, etc., like this.In addition, those skilled in the art should understand that, variable resistance circuit has multiple way of realization, multiple mode therefore can be had to realize the resistance value adjusting to variable resistance circuit, be also just not described in detail at this.
After the resistance value regulating this variable resistance circuit, the current value of the solenoid in magnetic valve is again now flow through by current sensor measurement, measured current value is compared by ECU with corresponding target control electric current, if the difference between measured current value and target control electric current is in the tolerable limit set in advance, the modified value then resistance value adjusting amount being designated as under temperature T1, if the difference between measured current value and target control electric current is greater than the scope allowed, then repeat above adjustment, the step measured and compare, until the difference between measured current value and target control electric current is in the scope allowed, and the modified value accumulative resistance value adjusting amount being designated as under temperature T1.
Next, by Temperature-controlled appliance, the temperature in cylinder body can be adjusted to T2, the resistance value of variable resistance circuit is returned to initial value, under temperature T2, test modified value, test process is substantially identical with the above-mentioned process testing modified value under temperature T1, just repeats no more at this.
Finally, the modified value Trim_value_2 under the modified value Trim_value_1 under temperature T1, temperature T1, temperature T2, temperature T2 is transferred in upper computer by ECU.
Like this, upper computer is according to the modified value Trim_value_2 under the modified value Trim_value_1 under the temperature T1 received, temperature T1, temperature T2, temperature T2, and calculates based on following basic relational expression (1),
Trim_value=a �� T+b (1)
Calculating parameter a, b, such that it is able to obtain the funtcional relationship of modified value Trim_value and temperature T, wherein parameter a represents the Slope relationship between modified value (the resistance value adjusting amount of such as variable resistance circuit) and temperature, and parameter b represents the permanent error that hardware causes.
Below only calculating parameter is carried out with the modified value of two temperature and correspondence thereof, certainly, it will be appreciated by those skilled in the art that, it is possible to adopt more temperature and corresponding modified value thereof, the method of Corpus--based Method analysis carrys out the statistical value of calculating parameter, is also just not described in detail at this.
When specifying the demarcation carrying out modified value in CAN flag, upper computer by comprise above calculate parameter a, b data be sent to magnetic valve controller, and it is stored in the buffer memory of the ECU of this magnetic valve controller, as one verification mechanism example, ECU calculates each parameter sum checksum received, then the checksum calculated is passed back to upper computer, whether each parameter sum that upper computer inspection has sent equal with this checksum, so that it is guaranteed that the exactness of each parameter in transmitting procedure and consistence. It will be appreciated by those skilled in the art that, it is also possible to adopt other the mechanism of the verification for transfer.
When each parameter sum that upper computer confirmation has sent is equal with this checksum, send to magnetic valve controller and write EEPROM (ElectricallyErasableProgrammableRead-OnlyMemory, electrically-erasable ROM) order, when the ECU of magnetic valve controller receive this write EEPROM order time, by parameter a, b write ECU EEPROM in assigned address.
Above about modified value demarcation detailed process example as shown in Figure 4.
When specifying the checking carrying out modified value in CAN flag, magnetic valve controller receives the control signal comprising target control electric current from upper computer, and from the EEPROM of ECU, read parameter a, b, then the temperature value T of ECU detected by parameter a, b and Current Temperatures sensor, calculates modified value Trim_value now. When modified value is resistance value adjusting amount, the resistance value of variable resistance circuit is returned to initial value by ECU, then the resistance value of variable resistance circuit is regulated based on modified value Trim_value, then the current value of the solenoid flowing through in magnetic valve is measured, thus whether the difference between the current value measured of inspection institute and target control electric current is in the scope allowed, thus the modified value demarcated is verified.
Fig. 5 shows the block diagram of above checking process.
Although the foregoing describing the exemplary embodiment of the present invention, but the present invention is not limited thereto. Person of ordinary skill in the field can make various change and amendment, and does not depart from the spirit and scope of the present invention. The scope of the present invention is only defined by the claims.
Claims (9)
1. testing a method for the modified value of magnetic valve controller, the method comprises:
Obtaining the first modified value at the first temperature, this first modified value makes the difference flow through at the first temperature between the actual current value of solenoid in magnetic valve and the target control electric current of magnetic valve in the scope allowed;
Obtaining the 2nd modified value at the 2nd temperature, the 2nd modified value makes the difference flow through at the second temperature between the actual current value of solenoid in magnetic valve and the target control electric current of magnetic valve in the scope allowed;
Based on the first temperature, the first modified value, the 2nd temperature, the 2nd modified value, obtain the parameter characterized in the temperature variant relational expression of modified value.
2. method according to claim 1, wherein,
This modified value is used for the resistance value to the variable resistance circuit in magnetic valve controller and regulates, and is the difference of the resistance value after variable resistance circuit correction and initial resistivity value.
3. method according to claim 1, wherein,
Temperature is changed by Temperature-controlled appliance.
4. method according to claim 1, wherein,
Detected temperatures is carried out by temperature sensor.
5. method according to claim 1, wherein,
Logical over-current sensor detects the actual current value flowing through solenoid in magnetic valve.
6. demarcate a method for the modified value of magnetic valve controller, the parameter obtained is stored in the storer of control unit of magnetic valve controller in method according to claim 1.
7. a method for the modified value of verifying electromagnetic control valve device, comprising:
Read in method according to claim 6 the parameter stored;
Measure current temperature;
According to described parameter and measured temperature, obtain modified value;
After being revised by magnetic valve controller according to described modified value, measure the actual current value flowing through solenoid in magnetic valve;
Whether the difference between the current value that inspection institute measures and the target control electric current of magnetic valve is in the scope allowed.
8. testing a system for the modified value of magnetic valve controller, this system comprises:
Upper computer, for providing predetermined target control electric current to magnetic valve controller;
Power supply, for providing electric power to magnetic valve controller;
Magnetic valve controller, comprise multiple input/output interface, control unit, adjustable unit and the signal generator that trembles, electric current for flowing through solenoid in magnetic valve by control carrys out the aperture of Controlling solenoid valve, and by the signal that trembles, magnetic dot is trembled up and down at settling position place, wherein, this adjustable unit is used under the control of the control unit, revise magnetic valve controller and regulate the current value flowing through solenoid in magnetic valve, so that the difference between the target control electric current of this current value and magnetic valve is in the scope allowed;
Cylinder body;
Magnetic valve, is placed in cylinder body;
Temperature sensor, for the temperature detected in cylinder body, and is input to control unit by detected value;
Current sense device, for detecting the electric current of the solenoid flowing through in magnetic valve, and is input to control unit by detected value.
9. system according to claim 1, wherein,
Described adjustable unit is voltage transitions device or adjustable resistor circuit.
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| CN201410629868.8A CN105652103A (en) | 2014-11-10 | 2014-11-10 | Methods and system for testing, calibrating and verifying corrected value of solenoid valve control device |
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| CN201410629868.8A CN105652103A (en) | 2014-11-10 | 2014-11-10 | Methods and system for testing, calibrating and verifying corrected value of solenoid valve control device |
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Cited By (5)
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| CN108375422A (en) * | 2018-01-29 | 2018-08-07 | 中国第汽车股份有限公司 | A kind of control method, control device and system that electromagnet temperature liter is tested automatically |
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| CN109521289A (en) * | 2017-09-20 | 2019-03-26 | 大陆汽车投资（上海）有限公司 | It establishes the correcting current model of electronic device and calibrates the output electric current of electronic device |
| CN111198591A (en) * | 2018-11-16 | 2020-05-26 | 纬湃科技投资(中国)有限公司 | Method for controlling current output of SDH8 circuit |
| CN113027941A (en) * | 2019-12-24 | 2021-06-25 | 北京宝沃汽车股份有限公司 | Control method and device of electromagnetic valve and vehicle |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109521289A (en) * | 2017-09-20 | 2019-03-26 | 大陆汽车投资（上海）有限公司 | It establishes the correcting current model of electronic device and calibrates the output electric current of electronic device |
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| CN111198591A (en) * | 2018-11-16 | 2020-05-26 | 纬湃科技投资(中国)有限公司 | Method for controlling current output of SDH8 circuit |
| CN113027941A (en) * | 2019-12-24 | 2021-06-25 | 北京宝沃汽车股份有限公司 | Control method and device of electromagnetic valve and vehicle |
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