CN106249091A - A kind of air door actuator of automobile air-conditioner linearity detector and detection method thereof - Google Patents

Abstract

The present invention relates to linearity detection technique field, especially a kind of air door actuator of automobile air-conditioner linearity detector and detection method thereof, air door actuator of automobile air-conditioner linearity detector includes data acquisition unit and calculation processing unit, data acquisition unit includes that the precision being connected with air door executer is led and moulds potentiometer, air door executer includes executor's potentiometer and performer motor, precision is led and is moulded potentiometer and be rigidly connected by the rotating shaft of shaft coupling with performer motor, precision lead mould potentiometer performer motor drive under with executor's potentiometer synchronous axial system, calculation processing unit includes constant voltage source, signal conditioning circuit, variable connector, A/D converter, single-chip microcomputer and display.The present invention is led by precision and moulds potentiometer synchronous acquisition feedback voltage, then the feedback voltage of air door executer difference test point is analyzed processing the linearity error value obtaining air door executer by calculation processing unit, it is achieved that the air door executer linearity detects.

Description

A kind of air door actuator of automobile air-conditioner linearity detector and detection method thereof

Technical field

The present invention relates to linearity detection technique field, especially air door actuator of automobile air-conditioner linearity detector.

Background technology

Along with progress and the growth in the living standard of science and technology, vapour environment inside car comfort level is required more and more higher, makes by people Obtain automatic air conditioner system of vehicle gradually to popularize.The main task of automatic air conditioner system of vehicle is various according to be arranged on inside and outside car The output signal of sensor, to air inlet conversion fan, supply gas conversion fan, blender door, compressor, air blast after ECU processes Machines etc. automatically control, and instruct regulation environment inside car according to the input of operator, make the miniclimate in cabin be maintained at the most easypro Suitable state.Air conditioner damper executor (is commonly called as air door executer), and its Main Function is that relevant action is made in the instruction according to ECU, changes Become damper positions, switch air quantity, to reach to regulate the purpose of vehicle interior temperature.Air door executer has polytype, wherein motor with The air door actuator of automobile air-conditioner of potentiometer fabricated structure, is together in an independence by position switch and signal feedback function collection Potentiometer so that its simple in construction, it is simple to producing and position feedback accuracy is high, Fig. 1 shows that such air door is held The electrical schematic diagram of row device circuit, in Fig. 1, pin 1 ' and 3 ' is potentiometer power input, and pin 2 ' is feedback voltage outfan, Pin 4 ' and 6 ' is electric moter voltage input, and 5 ' is sky foot.Such executor is high to the linearity of potentiometer, electricity The performance of position device determines the good and the bad of executor, not for this kind of air door executer linearity error index in prior art Detection device and method.

Summary of the invention

It is an object of the invention to the defect overcoming prior art to exist, it is provided that the accurate automobile air-conditioning throttle of a kind of measurement is held Row device linearity detector and detection method thereof.

In order to realize the purpose of the present invention, be the technical scheme is that

The air door actuator of automobile air-conditioner linearity detector of the present invention includes data acquisition unit and calculation processing unit, Described data acquisition unit includes that the precision being connected with air door executer is led and moulds potentiometer, and described air door executer includes executor Potentiometer and performer motor, described precision led and moulds potentiometer and be rigidly connected by the rotating shaft of shaft coupling with performer motor, institute State precision lead mould potentiometer performer motor drive under include with executor's potentiometer synchronous axial system, described calculation processing unit Constant voltage source, signal conditioning circuit, variable connector, A/D converter, single-chip microcomputer and display, described constant voltage source be described in hold Row device potentiometer and precision lead mould potentiometer provide stabilized power source voltage vcc make described executor's potentiometer and precision lead and mould current potential The sliding end feedback voltage of device changes between 0-Vcc, and the voltage signal of this change is passed to by described signal conditioning circuit Described variable connector, described Single-chip Controlling A/D converter carries out real-time A/D conversion to two-way feedback voltage signal, and to survey The magnitude of voltage obtained is calculated tested air door executer linearity error value by formula, is then shown by described display.

Single-chip microcomputer of the present invention is also connected with PC, and described PC receives and shows the data message of described single-chip microcomputer, Described PC is to drawing out " feedback voltage corner " curve of described air door executer after processing data information with " linearity is by mistake Difference corner " curve.

Precision of the present invention is led and is moulded potentiometer and be fixedly mounted on testing jig pedestal.

Single-chip microcomputer of the present invention is STC12C5A60S2 single-chip microcomputer.

Performer motor of the present invention is by motor driver control.

The present invention also provides for a kind of air door actuator of automobile air-conditioner linearity detection method, uses above-mentioned air conditioning for automobiles wind Door executor's linearity detector, linearity error computational methods comprise the following steps:

The most described precision is led and moulded the anglec of rotation of the sliding end feedback voltage of potentiometer and the rotating shaft of performer motor is line Sexual relationship, its linear equation is:

$V_j=\frac{V_{cc}}{{\mathrm{\θ}}_r}\×\mathrm{\θ}$

Wherein, Vj is that precision leads the dynamic some feedback voltage moulding potentiometer, and θ is the anglec of rotation of performer motor, and θ r is essence Close leading moulds the electric corner of potentiometer；

B. measure executor's potentiometer and specify feedback voltage V_iHAnd V_iL2 corresponding precisions are led and are moulded potentiometer feedback electricity Pressure V_jHAnd V_jL, obtaining the ideal line of tested executor, this linear equation is:

$V_s=\frac{V_{iH}-V_{iL}}{{\mathrm{\θ}}_H-{\mathrm{\θ}}_L}\×(\mathrm{\θ}-{\mathrm{\θ}}_L)+V_{iL}$

${\mathrm{\θ}}_H=\frac{{\mathrm{\θ}}_r}{V_{CC}}\×V_{jH}$

${\mathrm{\θ}}_L=\frac{{\mathrm{\θ}}_r}{V_{cc}}\×V_{jL}$

$\stackrel{\·}{\·\·}{V}_s=\frac{V_{iH}-V_{iL}}{V_{JH}-V_{jL}}\×(V_j-V_{jL})+V_{iL}$

Lead according to the precision recorded and mould potentiometer and move point voltage V_jHAnd V_jLAnd precision leads the electric rotational angle theta moulding potentiometer_r, can Obtaining performer motor is V at feedback voltage_iH～V_iLBetween electric corner:

At V_jLAnd V_jHBetween take N number of point, then step-lengthWith Δ V_jFor stepping, pointwise is measured precision and is led and mould Potentiometer feedback voltage V_j1, V_j2, V_j3……V_jNCorresponding executor potentiometer each point feedback voltage level V_i1, V_i2, V_i3…… V_iN；Wherein V_j1It is V_jL, V_jNIt is V_jH；

C. byIt is calculated V_s1, V_s2, V_s3……V_sN, linearity error define to obtain x (x value 1～N) point Linear degree error is:

$W_x=\frac{V_{ix}-V_{sx}}{V_{iH}-V_{iL}}\×100\%.$

Display of the present invention display air door executer is V at feedback voltage_iH～V_iLBetween electric crank degree and Maximum linear degree error amount, described PC receives the data message of single-chip microcomputer, and described PC is drawn after processing data information Go out " feedback voltage corner " curve and " linearity error corner " curve of the detection of described air door executer.

The air door actuator of automobile air-conditioner linearity detector of the present invention and detection method thereof provide the benefit that:

(1) the air door actuator of automobile air-conditioner linearity detector of the present invention leads by precision that to mould potentiometer synchronous acquisition anti- Feedthrough voltage, is then analyzed process by calculation processing unit to the feedback voltage of air door executer difference test point and obtains wind The linearity error value of door executor, it is achieved that the air door executer linearity detects；

(2) the air door actuator of automobile air-conditioner linearity detector of the present invention uses precision to lead and moulds potentiometer as angular displacement Sensor, detects air door executer linearity error, and accuracy of detection is high；

(3) detector can detect air door executer simultaneously and specify the most electrically corner, the Mei Gefeng between two feedback voltages Door executor detects data and can be uploaded to PC, is depicted as curve, can more intuitively observe testing result, and data can be adopted simultaneously Preserve with document form, it is simple to later stage inquiry and analysis.

Accompanying drawing explanation

The present invention is further detailed explanation with detailed description of the invention below in conjunction with the accompanying drawings.

Fig. 1 is the circuit connection diagram of air door actuator of automobile air-conditioner of the prior art；

Fig. 2 is the theory diagram of the air door actuator of automobile air-conditioner linearity detector of the present invention；

Fig. 3 is the air door executer p-wire sexual relationship schematic diagram of the present invention；

Fig. 4 is the voltage curve schematic diagram of the air door executer of the present invention；

Fig. 5 is the linearity error schematic diagram of the air door executer of the present invention.

Wherein: precision is led and moulded potentiometer 1, executor's potentiometer 2, performer motor 3, constant voltage source 4, variable connector 5, A/ D transducer 6, display 7.

Detailed description of the invention

In describing the invention, it is to be understood that term " radially ", " axially ", " on ", D score, " top ", " end ", Orientation or the position relationship of the instruction such as " interior ", " outward " are based on orientation shown in the drawings or position relationship, are for only for ease of and retouch State the present invention and simplify description rather than instruction or imply that the device of indication or element must have specific orientation, with specific Azimuth configuration and operation, be therefore not considered as limiting the invention.In describing the invention, except as otherwise noted, " multiple " are meant that two or more.

In describing the invention, it should be noted that unless otherwise clearly defined and limited, term " is installed ", " is set Put ", " connection " should be interpreted broadly, connect for example, it may be fixing, it is also possible to be to removably connect, or be integrally connected；Can Being to be joined directly together, it is also possible to be indirectly connected to by intermediary.For the ordinary skill in the art, can basis Concrete condition understands above-mentioned term concrete meaning in the present invention.

As in figure 2 it is shown, the air door actuator of automobile air-conditioner linearity detector of the present embodiment include data acquisition unit and Calculation processing unit, data acquisition unit includes that the precision being connected with air door executer is led and moulds potentiometer 1, wherein air door executer Including executor's potentiometer 2 and performer motor 3, precision leads that to mould potentiometer 1 firm with the rotating shaft of performer motor 3 by shaft coupling Property connect, specifically, precision is led and is moulded potentiometer 1 and be arranged on testing jig pedestal, and precision leads the resistance regulative mode moulding potentiometer 1 For rotary, change in resistance mode is orthoscopic, and independent linearity is 0.1%, one end of shaft coupling by hexagon socket head cap screw with Precision is led and is moulded that the rotating shaft of potentiometer 1 is fixing to be connected, and the other end of shaft coupling turns by hexagon socket head cap screw and performer motor 3 Axle is fixing to be connected, and can regulate part to be measured by turn near the hexagon socket head cap screw of air door executer and insert the degree of tightness of shaft coupling Degree, during detection precision lead mould potentiometer 1 performer motor 3 drive under with executor's potentiometer 2 synchronous axial system.

Calculation processing unit in the present embodiment includes that constant voltage source 4, signal conditioning circuit, variable connector 5, A/D change Device 6, single-chip microcomputer and display 7, constant voltage source 4 is led for executor's potentiometer 2 and precision and is moulded potentiometer 1 and provide stabilized power source voltage Vcc, makes executor's potentiometer 2 and precision lead and moulds the sliding end feedback voltage of potentiometer 1 and change between 0-Vcc, this change Feedback voltage signal passes to variable connector 5 by signal conditioning circuit, and Single-chip Controlling A/D converter 6 is to two-way feedback electricity Pressure signal carries out real-time A/D conversion, and the magnitude of voltage recorded is calculated the tested air door executer linearity by mistake by formula Difference, is then shown by display 7.

In order to observe the testing result of air door executer intuitively, single-chip microcomputer is also associated with PC, and PC is built-in with air door Software is analyzed in the detection of executor's linearity, and PC is analyzed software by linearity detection and processed the data message imported, And draw out " feedback voltage corner " curve of air door executer and " linearity error corner " curve, data can use literary composition Part form preserves.

Single-chip microcomputer in the present embodiment is STC12C5A60S2 single-chip microcomputer, and performer motor 3 is by motor driver control.

As it is shown on figure 3, the present embodiment also provides for a kind of air door actuator of automobile air-conditioner linearity detection method, use above-mentioned Air door actuator of automobile air-conditioner linearity detector, wherein, linearity error computational methods comprise the following steps:

A. accurate the anglec of rotation of the sliding end feedback voltage moulding potentiometer 1 and the rotating shaft of performer motor 3 is led linearly Relation, as shown in Fig. 3 cathetus I, its linear equation is:

$V_j=\frac{V_{cc}}{{\mathrm{\θ}}_r}\×\mathrm{\θ}$

Wherein, Vj is that precision leads the dynamic some feedback voltage moulding potentiometer 1, and θ is the anglec of rotation of performer motor 3, and θ r is Precision is led and is moulded the electric corner of potentiometer 1；

B. measure executor's potentiometer 2 and specify feedback voltage V_iHAnd V_iL2 corresponding precisions are led and are moulded potentiometer 1 and feed back Voltage V_jHAnd V_jL, obtain the ideal line of tested executor, as shown in Fig. 3 cathetus II, this linear equation is:

$V_s=\frac{V_{iH}-V_{iL}}{{\mathrm{\θ}}_H-{\mathrm{\θ}}_L}\×(\mathrm{\θ}-{\mathrm{\θ}}_L)+V_{iL}$

${\mathrm{\θ}}_H=\frac{{\mathrm{\θ}}_r}{V_{CC}}\×V_{jH}$

${\mathrm{\θ}}_L=\frac{{\mathrm{\θ}}_r}{V_{cc}}\×V_{jL}$

$\stackrel{\·}{\·\·}{V}_s=\frac{V_{iH}-V_{iL}}{V_{JH}-V_{jL}}\×(V_j-V_{jL})+V_{iL}$

Lead according to the precision recorded and mould potentiometer 1 and move point voltage V_jHAnd V_jLAnd precision leads the electric rotational angle theta moulding potentiometer 1_r, Can obtain performer motor at feedback voltage is V_iH～V_iLBetween electric corner:

At V_jLAnd V_jHBetween take N number of point, then step-lengthWith Δ V_jFor stepping, pointwise is measured precision and is led and mould Potentiometer feedback voltage V_j1, V_j2, V_j3……V_jNCorresponding executor potentiometer each point feedback voltage level V_i1, V_i2, V_i3…… V_iN；Wherein V_j1It is V_jL, V_jNIt is V_jH；

C. byIt is calculated V_s1, V_s2, V_s3……V_sN, linearity error define X (x value 1～N) point Linear degree error is:

$W_x=\frac{V_{ix}-V_{sx}}{V_{iH}-V_{iL}}\×100\%.$

N in the present embodiment is the natural number more than 2.

Single-chip microcomputer in the present embodiment receives accurate leading and moulds potentiometer 1 and the feedback voltage signal of executor's potentiometer 2, and Be calculated the linearity error of air door executer by above-mentioned formula, this linearity error is shown by display 7, display 7 display air door executers are V at feedback voltage_iH～V_iLBetween electric crank degree and the linearity error value of maximum, this reality The display 7 executed in example is designed as digital display tube, real-time roll display V of digital display tube_iH～V_iLBetween each point linearity Error amount, when having tested, display 7 shows V_iH～V_iLBetween the linearity error value of maximum absolute value in each test point, as Really the linearity error value of maximum absolute value falls in critical field, and the most tested executor is qualified, and certain display 7 is all right The display module using other forms shows, is not restricted this.

PC in the present embodiment can receive the data message of single-chip microcomputer, and same PC can show each test point electricity Pressure, linearity error value and maximum linear degree error amount, simultaneously PC can show air door executer specify two feedback voltages it Between effectively electrically corner and the maximum overgauge of linearity detection, maximum minus deviation and average deviation, see Fig. 4 and Fig. 5, PC can be analyzed software by linearity detection and process the data message imported, and draws out the " anti-of air door executer Feedthrough voltage corner " curve and " linearity error corner " curve, thus more intuitively observe air door executer testing result. Wherein, the abscissa in Fig. 4 represents the anglec of rotation of performer motor corresponding to each test point 3, and vertical coordinate represents each test point Corresponding air door executer feedback voltage level, can draw out the " anti-of air door executer according to the detected value of above-mentioned each test point Feedthrough voltage corner " curve, the straight line in Fig. 4 represents the ideal line of air door executer, the air door executer being equivalent in Fig. 3 Ideal line II, the curve in Fig. 4 represents actual measurement voltage curve, and the air door executer being equivalent in Fig. 3 actual measurement feedback voltage is bent Line III, such user observation is more directly perceived, and the abscissa in Fig. 5 represents the anglec of rotation of performer motor corresponding to each test point 3, Vertical coordinate represents the linearity error value of air door executer corresponding to each test point, and the detected value according to above-mentioned each test point is permissible Draw out " linearity error corner " curve of air door executer, it is simple to user more intuitively obtains testing result, and above-mentioned Test result can use document form to preserve, it is simple to later data statistical analysis processes.

The linearity detector of this example uses precision to lead and moulds potentiometer as angular displacement sensor, to air door executer line Property degree error detect, accuracy of detection is high, and can detect air door executer specifies having between two feedback voltages to detector simultaneously Imitating electric corner, each air door executer detection data can be uploaded to PC, draw curve, and data can use document form to protect Deposit, convenient inquiry and analysis.

Should be appreciated that specific embodiment described above is only used for explaining the present invention, be not intended to limit the present invention.By What the spirit of the present invention was extended out obviously changes or changes among still in protection scope of the present invention.

Claims (7)

1. an air door actuator of automobile air-conditioner linearity detector, it is characterised in that: include at data acquisition unit and calculating Reason unit, described data acquisition unit includes that the precision being connected with air door executer is led and moulds potentiometer (1), described air door executer Including executor's potentiometer (2) and performer motor (3), described precision is led and is moulded potentiometer (1) by shaft coupling and executor's electricity The rotating shaft of machine (3) is rigidly connected, and described precision is led and moulded potentiometer (1) and drive lower and executor's potentiometer at performer motor (3) (2) synchronous axial system, described calculation processing unit includes that constant voltage source (4), signal conditioning circuit, variable connector (5), A/D change Device (6), single-chip microcomputer and display (7), described constant voltage source (4) is described executor's potentiometer (2) and precision is led and moulded potentiometer (1) stabilized power source voltage vcc is provided to make described executor's potentiometer (2) and precision lead the sliding end feedback electricity moulding potentiometer (1) Being pressed between 0-Vcc change, the voltage signal of this change passes to described variable connector (5) by described signal conditioning circuit, Described Single-chip Controlling A/D converter (6) carries out real-time A/D conversion to two-way feedback voltage signal, and to the magnitude of voltage recorded It is calculated tested air door executer linearity error value by formula, is then shown by described display (7).

Air door actuator of automobile air-conditioner linearity detector the most according to claim 1, it is characterised in that: described single-chip microcomputer Also ining succession PC, described PC receives and shows the data message of described single-chip microcomputer, and described PC is painted after processing data information Make " feedback voltage corner " curve and " linearity error corner " curve of the detection of described air door executer.

Air door actuator of automobile air-conditioner linearity detector the most according to claim 1, it is characterised in that: described precision is led Mould potentiometer (1) to be fixedly mounted on testing jig pedestal.

Air door actuator of automobile air-conditioner linearity detector the most according to claim 1, it is characterised in that: described single-chip microcomputer For STC12C5A60S2 single-chip microcomputer.

Air door actuator of automobile air-conditioner linearity detector the most according to claim 1, it is characterised in that: described executor Motor (3) is by motor driver control.

6. an air door actuator of automobile air-conditioner linearity detection method, uses the vapour as described in claim 1-5 any one Car air conditioner damper executor's linearity detector, it is characterised in that: linearity error computational methods comprise the following steps:

The most described precision lead the anglec of rotation moulding the sliding end feedback voltage of potentiometer (1) and the rotating shaft of performer motor (3) in Linear relationship, its linear equation is:

$V_j=\frac{V_{cc}}{{\mathrm{\θ}}_r}\×\mathrm{\θ}$

Wherein, Vj is that precision leads the dynamic some feedback voltage moulding potentiometer (1), and θ is the anglec of rotation of performer motor (3), and θ r is Precision is led and is moulded potentiometer (1) electrically corner；

B. measure executor's potentiometer and specify feedback voltage V_iHAnd V_iL2 corresponding precisions are led and are moulded potentiometer feedback voltage V_jH And V_jL, obtaining the ideal line of tested executor, this linear equation is:

$V_s=\frac{V_{iH}-V_{iL}}{{\mathrm{\θ}}_H-{\mathrm{\θ}}_L}\×(\mathrm{\θ}-{\mathrm{\θ}}_L)+V_{iL}$

$\underset{\·}{\·\·}\mathrm{\θ}=\frac{{\mathrm{\θ}}_r}{V_{CC}}\×V_j$

${\mathrm{\θ}}_H=\frac{{\mathrm{\θ}}_r}{V_{CC}}\×V_{jH}$

${\mathrm{\θ}}_L=\frac{{\mathrm{\θ}}_r}{V_{cc}}\×V_{jL}$

$\stackrel{\·}{\·\·}{V}_s=\frac{V_{iH}-V_{iL}}{V_{JH}-V_{jL}}\×(V_j-V_{jL})+V_{iL}$

Lead according to the precision recorded and mould potentiometer and move point voltage V_jHAnd V_jLAnd precision leads the electric rotational angle theta moulding potentiometer_r, can hold Row device motor is V at feedback voltage_iH～V_iLBetween electric corner:

At V_jLAnd V_jHBetween take N number of point, then step-lengthWith Δ V_jFor stepping, pointwise is measured precision and is led and mould current potential Device feedback voltage V_j1, V_j2, V_j3……V_jNCorresponding executor potentiometer each point feedback voltage level V_i1, V_i2, V_i3……V_iN； Wherein V_j1It is V_jL, V_jNIt is V_jH；

C. byIt is calculated V_s1, V_s2, V_s3……V_sN, by linearity error define x (x takes Value 1～N) point Linear degree error is:

$W_x=\frac{V_{ix}-V_{sx}}{V_{iH}-V_{iL}}\×100\%.$

Air door actuator of automobile air-conditioner linearity detection method the most according to claim 6, it is characterised in that: described display Device (7) display air door executer is V at feedback voltage_iH～V_iLBetween electric crank degree and maximum linear degree error amount, institute Stating PC and receive the data message of single-chip microcomputer, described PC is to drawing out the detection of described air door executer after processing data information " feedback voltage corner " curve and " linearity error corner " curve.