CN212540539U - Brush direct current motor phase resistance measuring device - Google Patents
Brush direct current motor phase resistance measuring device Download PDFInfo
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- CN212540539U CN212540539U CN202020960911.XU CN202020960911U CN212540539U CN 212540539 U CN212540539 U CN 212540539U CN 202020960911 U CN202020960911 U CN 202020960911U CN 212540539 U CN212540539 U CN 212540539U
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Abstract
The utility model relates to a brush DC motor phase resistance measuring device, the device includes: the device comprises a power supply part, a current acquisition part, a voltage acquisition part and a speed measuring device; the power supply part is connected with the motor; the voltage acquisition component is connected with the motor; the current acquisition component is connected with the motor; the speed measuring device is connected with an output shaft of the motor. The motor is powered by the power supply part, the current acquisition part is connected to acquire effective working current of the motor, the voltage acquisition part is connected to acquire real-time working voltage of the motor, and the actual running speed of the motor acquired by the speed measurement device is connected, so that the phase resistance of the whole motor is quickly calculated according to acquired data.
Description
Technical Field
The utility model relates to a motor technology, specificly relate to a brush DC motor phase resistance measuring device.
Background
At present, with the promotion of the concept of green environmental protection and the stricter AISG (Antenna Interface Standard Group) protocol, more and more Antenna electrically tuning controllers adopt brushed direct current motors, and the parameters of the motors have important influence on the application of the motors, especially when the controllers are developed, the phase resistance of the motors needs to be measured. In the traditional phase resistance measurement technology, the phase resistance of the motor is measured by adopting a mode of measuring the phase resistance by using a static rotor, the phase resistance of the motor can be measured only by disassembling the motor by adopting the mode, and the method cannot be quickly and efficiently applied to incoming material inspection, motor abnormity judgment and the like.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at overcoming at least one kind defect (not enough) among the above-mentioned prior art, provide a there is brush DC motor phase resistance measuring device, ability rapid survey has brush DC motor complete machine phase resistance.
The utility model adopts the technical proposal that:
a brushed dc motor phase resistance measurement device, the device comprising: the device comprises a power supply part, a current acquisition part, a voltage acquisition part and a speed measuring device; the power supply part is connected with the motor; the voltage acquisition component is connected with the motor; the current acquisition component is connected with the motor; the speed measuring device is connected with an output shaft of the motor.
The motor is powered by the power supply part, the current acquisition part is connected to acquire effective working current of the motor, the voltage acquisition part is connected to acquire real-time working voltage of the motor, and the speed measurement device is connected to acquire the actual running speed of the motor, so that the phase resistance of the whole motor is rapidly calculated according to acquired data. The whole measuring device adopts simple instruments, and the measuring method is simple and easy to realize.
Further, the power supply component is a direct current stabilized power supply, the positive electrode of the direct current stabilized power supply is connected with the positive electrode of the motor, and the negative electrode of the direct current stabilized power supply is connected with the negative electrode of the motor.
The motor can be powered by connecting a direct-current stabilized voltage power supply, and the instrument is simple in requirement and convenient to use.
Furthermore, the voltage acquisition component and the current acquisition component are the same acquisition device, the same acquisition device is an oscilloscope, the anode of a voltage probe of the oscilloscope is connected with the anode of the motor, and the cathode of the voltage probe of the oscilloscope is connected with the cathode of the motor; and a current probe of the oscilloscope is connected with the anode of the motor.
The voltage acquisition component and the current acquisition component are combined into a whole, and the acquisition of real-time working voltage and effective working current of the motor can be finished by directly adopting an oscilloscope, so that the phase resistance of the motor can be calculated according to the acquired current and voltage. The adopted oscilloscope is simple and widely used, and can be applied to incoming material inspection and motor abnormity judgment.
Further, the device also comprises a coupler, and the speed measuring device is connected with an output shaft of the motor through the coupler.
The coupling is additionally arranged between the output shafts of the motors to connect the speed measuring device, so that the measuring error caused by different shafts between the motors and the speed measuring device can be reduced, and the accuracy of measuring the actual running speed of the motors is improved.
Further, the speed measuring device is a digital display linear speed measuring tachometer.
The digital display linear speed measuring and rotating speed measuring instrument is used as a speed measuring device of the motor, and is low in price, so that the cost for measuring the phase resistance of the motor can be reduced.
Further, the current acquisition component is an ammeter, and the ammeter is connected with the motor.
The cost for measuring the phase resistance of the motor can be reduced by adopting a widely-used ammeter as a current acquisition component.
Further, the current acquisition part is a universal meter, and the universal meter is connected with the motor.
By adopting a universal meter with wide application as a current acquisition component, the cost for measuring the phase resistance of the motor can be reduced.
Further, the voltage acquisition component is a voltmeter, and the voltmeter is connected with the motor.
By adopting a widely-used voltmeter as a voltage acquisition component, the cost for measuring the phase resistance of the motor can be reduced.
Further, the device also comprises a fixing frame, and the motor and the speed measuring device are arranged on the fixing frame.
The motor and the speed measuring device are installed on the fixing frame to be fixed, so that the influence caused by shaking of the motor is reduced when the actual running speed of the motor is measured by the speed measuring device.
Further, the fixing frame comprises a fixing frame platform, a motor fixing frame and a speed measuring device fixing frame, the motor fixing frame and the speed measuring device fixing frame are respectively installed on the fixing frame platform, and the motor is installed on the motor fixing frame; the speed measuring device is installed on the speed measuring device fixing frame.
The motor is installed on the motor fixing frame and the speed measuring device is installed on the speed measuring device fixing frame, so that the influence caused by shaking of the motor can be reduced when the actual running speed of the motor is measured by the speed measuring device.
The utility model has the advantages that: the instrument that brush DC motor looks resistance measuring device adopted is simple, can gather out brush DC motor's real-time operating voltage, effective operating current and actual operating speed fast to calculate fast according to the data of gathering and obtain the whole looks resistance of DC motor, the device measuring speed is fast, the measurement is convenient and accurate, can come material inspection and motor abnormal judgement etc. fast, high-efficiently.
Drawings
Fig. 1 is a schematic structural view of a measuring apparatus according to embodiment 1 of the present invention;
fig. 2 is a schematic structural view of a measuring apparatus according to embodiment 2 of the present invention;
fig. 3 is a schematic structural diagram of a measurement apparatus according to embodiment 3 of the present invention.
Detailed Description
The drawings are only for purposes of illustration and are not to be construed as limiting the invention. For a better understanding of the following embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
Example 1
As shown in fig. 1, it is a schematic structural diagram of a phase resistance measuring device of a brushed dc motor according to an embodiment of the present invention. Referring to fig. 1, the device for measuring the phase resistance of the brushed direct current motor comprises a power supply part 1, a current collecting part 2, a voltage collecting part 3 and a speed measuring device 4; the power supply part 1 is connected with the motor 5; the voltage acquisition component 3 is connected with the motor 5; the current acquisition component 2 is connected with the motor 5; the speed measuring device 4 is connected with an output shaft of the motor 5.
In a specific implementation process, the power supply part 1 is connected with the motor 5 to provide power for the motor 5, specifically, the power supply part is adjustable and can provide different voltages for the motor 5, the current acquisition part 2 is connected with the motor 5 to acquire effective working current of the motor 5, the voltage acquisition part 3 is connected with the motor 5 to acquire real-time working voltage of the motor 5, and the speed measurement device 4 is connected with an output shaft of the motor 5 to acquire an actual operating speed of the motor 5; and calculating according to the acquired effective working current, the real-time working voltage and the actual running speed according to a calculation formula so as to obtain the phase resistance of the motor 5. Specifically, the phase resistance calculation process of the motor 5 is as follows:
wherein R is a phase resistance of the motor 5, U is a voltage across the motor 5, E is a back electromotive force of the motor 5 in operation, and Irms is an effective current of the motor 5 in operation;
assuming that the operation speed of the motor 5 is V and the back emf coefficient is Ke, the formula (1) becomes:
namely:
for the same motor 5, the back electromotive force coefficient Ke is a fixed parameter, so that when values of effective operating currents and actual operating speeds at two different voltages are measured, the phase resistance of the motor 5 can be calculated according to the formula (4) and the formula (5), specifically, the formula is as follows:
namely:
wherein U1 is a first voltage, and the first voltage U1 is the real-time working voltage collected by the voltage collecting component 3 of the motor 5; i1rms is the effective working current of the motor 5 under the first voltage U1 and is acquired by the current acquisition component 2, V1 is the actual running speed of the motor 5 under the first voltage U1 and is acquired by the speed measurement device 4; u2 is a second voltage and is acquired by the voltage acquisition component 3, I2rms is an effective working current of the motor 5 under the second voltage U2 and is acquired by the current acquisition component 2, and V2 is an actual running speed of the motor 5 under the second voltage U2 and is acquired by the speed measurement device 4; therefore, when the device of the embodiment is used for measuring the phase resistance of the motor 5, the voltage value output by the power supply part 1 is adjusted to provide different working voltages for the motor 5, and when the phase resistance of the motor 5 is calculated, the values of the effective working current and the actual running speed of the motor 5 under two different voltages are measured, so that electricity can be calculated according to the formulaPhase resistance of the machine 5.
Through connecting power supply unit 1 does motor 5 provides the power, connects current acquisition unit 2 gathers motor 5's effective operating current, connection voltage acquisition unit 3 gathers motor 5's real-time operating voltage and connection speed sensor 4 gathers motor 5's actual operation's speed to calculate fast according to the data of gathering motor 5's complete machine phase resistance, the instrument of adoption is simple, can carry out incoming material inspection and motor abnormal judgement etc. fast.
In an alternative embodiment, the power supply unit 1 is a regulated dc power supply, the positive pole of which is connected to the positive pole of the motor 5, and the negative pole of which is connected to the negative pole of the motor 5.
Specifically, the positive electrode of the motor 5 is one end connected with the positive electrode of the dc stabilized power supply, and the negative electrode of the motor 5 is one end connected with the negative electrode of the dc stabilized power supply; the direct current stabilized power supply provides a stable direct current source for the motor 5, and when the effective working current and the actual running speed of the motor 5 under different voltages need to be tested, the direct current stabilized power supply is adjusted.
The motor 5 can be powered by connecting a direct-current stabilized voltage power supply, and the instrument is simple in requirement and convenient to use.
In another embodiment, the device further comprises a coupler, and the speed measuring device 4 is connected with the output shaft of the motor 5 through the coupler.
Specifically, the output shaft of the motor 5 is connected by the coupler, and the speed measuring device 4 is connected with the output shaft of the motor 5 by the coupler; through be in speed sensor 4 with increase a shaft coupling between the output shaft of motor 5, can reduce the test error that the disalignment brought between motor 5 and speed sensor 4 to improve the degree of accuracy of measuring the actual functioning speed of motor 5.
In an alternative embodiment, the speed measuring device 4 is a digital display linear speed measuring tachometer.
In the specific implementation process, the velocimeter is a digital display linear speed measuring velocimeter, the velocimeter is low in price and convenient to use, and the cost for measuring the phase resistance of the motor 5 is reduced.
In another embodiment, the device further comprises a fixing frame, and the motor 5 and the speed measuring device 4 are mounted on the fixing frame.
Specifically, the motor 5 and the speed measuring device 4 are respectively installed on the fixing frame, and an output shaft of the motor 5 and the speed measuring device 4 are on the same horizontal line.
The motor 5 and the speed measuring device 4 are installed on the fixing frame to be fixed, so that the speed measuring device 4 is adopted to measure the actual running speed of the motor 5, and the influence caused by shaking of the motor 5 can be reduced.
In an optional embodiment, the fixing frame comprises a fixing frame platform, a motor fixing frame and a speed measuring device fixing frame, the motor fixing frame and the speed measuring device fixing frame are respectively installed on the fixing frame platform, and the motor 5 is installed on the motor fixing frame; the speed measuring device 4 is installed on the speed measuring device fixing frame.
Specifically, the motor fixing frame is connected with the fixing frame platform, the motor fixing frame is a plate-shaped plate body, and a connecting structure for fixing the motor 5 is arranged on the plate body; the speed measuring device fixing frame is connected with the fixing frame platform, and the speed measuring device 4 is installed on the speed measuring device fixing frame.
Through installing motor 5 at the motor mount and installing speed sensor 4 on the speed sensor mount to it is right to adopt speed sensor 4 when the actual functioning speed of motor 5 measures, can reduce the influence that motor 5 rocked and bring.
In a specific implementation process, firstly, an output value of the dc regulated power supply is adjusted to provide a first working voltage for the motor 5, the current collecting component 2 collects an effective working current I1rms of the motor 5 under the first working voltage provided by the dc regulated power supply, the voltage collecting component 3 collects a real-time working voltage U1 of the motor 5 under the first working voltage provided by the dc regulated power supply, the speed measuring device 4 collects an actual operating speed V1 of the motor 5 under the first working voltage provided by the dc regulated power supply, and records the collected effective working current I1rms, the real-time working voltage U1 and the actual operating speed V1; then, the output value of the dc regulated power supply is adjusted to provide a second working voltage for the motor 5, the current collecting component 2 collects an effective working current I2rms of the motor 5 under the second working voltage provided by the dc regulated power supply, the voltage collecting component 3 collects a real-time working voltage U2 of the motor 5 under the second working voltage provided by the dc regulated power supply, the speed measuring device 4 collects an actual operating speed V2 of the motor 5 under the second working voltage provided by the dc regulated power supply, and records the collected effective working current I2rms, the real-time working voltage U2 and the actual operating speed V2; and finally, calculating the phase resistance of the motor 5 by using the formula (5) according to the acquired effective working current I1rms, the real-time working voltage U1, the actual running speed V1, the effective working current I2rms, the real-time working voltage U2 and the actual running speed V2.
Example 2
Different from embodiment 1, as shown in fig. 2, the voltage acquisition component 3 and the current acquisition component 2 of this embodiment are the same acquisition device, the same acquisition device is an oscilloscope, the positive electrode of the voltage probe of the oscilloscope is connected to the positive electrode of the motor 5, and the negative electrode of the voltage probe of the oscilloscope is connected to the negative electrode of the motor 5; and a current probe of the oscilloscope is connected with the anode of the motor 5.
Specifically, the positive electrode of the voltage probe of the oscilloscope is connected with the positive electrode of the motor 5, the negative electrode of the voltage probe of the oscilloscope is connected with the negative electrode of the motor 5, and the acquired real-time working voltage of the motor 5 is transmitted to the oscilloscope through the CH1 channel of the oscilloscope and displayed in a waveform form; and a current probe of the oscilloscope is connected with the anode of the motor 5, and the acquired effective working current of the motor 5 is transmitted into the oscilloscope through a CH2 channel of the oscilloscope and displayed in a waveform form.
The voltage acquisition component and the current acquisition component are combined into a whole, and the acquisition of real-time working voltage and effective working current of the motor 5 can be completed by directly adopting an oscilloscope, so that the phase resistance of the motor 5 can be calculated according to the acquired current and voltage, and the adopted oscilloscope is simple and wide in use, and can be applied to incoming material inspection and abnormal judgment of the motor 5.
In a specific implementation process, firstly, the output value of the direct-current stabilized power supply is adjusted to provide a first working voltage for the motor 5, the oscilloscope collects an effective working current I1rms of the motor 5 and a real-time working voltage U1 of the motor 5 under the first working voltage provided by the direct-current stabilized power supply, the speed measuring device 4 collects an actual operating speed V1 of the motor 5 under the first working voltage provided by the direct-current stabilized power supply, and records the collected effective working current I1rms, the real-time working voltage U1 and the actual operating speed V1; then adjusting the output value of the direct-current stabilized power supply to provide a second working voltage for the motor 5, acquiring an effective working current I2rms of the motor 5 and a real-time working voltage U2 of the motor 5 under the second working voltage provided by the direct-current stabilized power supply by the oscilloscope, acquiring an actual running speed V2 of the motor 5 under the second working voltage provided by the direct-current stabilized power supply by the speed measuring device 4, and recording the acquired effective working current I2rms, the real-time working voltage U2 and the actual running speed V2; and finally, calculating the phase resistance of the motor 5 by using the formula (5) in the embodiment 1 according to the acquired effective working current I1rms, the real-time working voltage U1, the actual running speed V1, the effective working current I2rms, the real-time working voltage U2 and the actual running speed V2.
Example 3
Unlike embodiment 1, as shown in fig. 3, the current collecting part 2 of this embodiment is an ammeter, and the ammeter is connected to the motor 5.
Specifically, the ammeter is connected in series with the motor 5 and the power supply unit 1, a positive electrode of the ammeter is connected to a positive electrode of the power supply unit 1, and a negative electrode of the ammeter is connected to a positive electrode of the motor 5.
By adopting a widely-used ammeter as a current collecting component, the cost for measuring the phase resistance of the motor 5 can be reduced.
In an alternative embodiment, the current collection unit 2 is a multimeter connected to the motor 5.
Specifically, the universal meter with motor 5 with electrical source unit 1 establishes ties, the red pen-shape metre of universal meter is connected electrical source unit 1's positive pole, the black pen-shape metre of universal meter is connected the positive pole of motor 5 is connecting when the universal meter, need with direct current shelves are transferred to the universal meter to adjust suitable gear.
By adopting a universal meter which is widely used as the current collection part 2, the cost for measuring the phase resistance of the motor 5 can be reduced.
In an alternative embodiment, as shown in fig. 3, the voltage acquisition part 3 is a voltmeter, and the voltmeter is connected with the motor 5.
Specifically, the voltmeter is connected in parallel with the motor 5, the positive pole of the voltmeter is connected with the positive pole of the motor 5, and the negative pole of the voltmeter is connected with the negative pole of the motor 5.
By adopting a widely used voltmeter as the voltage acquisition part 3, the cost for measuring the phase resistance of the motor 5 can be reduced.
In a specific implementation process, firstly, an output value of the direct-current stabilized power supply is adjusted to provide a first working voltage for the motor 5, the ammeter acquires an effective working current I1rms of the motor 5 under the first working voltage provided by the direct-current stabilized power supply, the voltmeter 3 acquires a real-time working voltage U1 of the motor 5 under the first working voltage provided by the direct-current stabilized power supply, the speed measuring device 4 acquires an actual running speed V1 of the motor 5 under the first working voltage provided by the direct-current stabilized power supply, and the acquired effective working current I1rms, the real-time working voltage U1 and the actual running speed V1 are recorded; then adjusting the output value of the direct-current stabilized power supply to provide a second working voltage for the motor 5, acquiring an effective working current I2rms of the motor 5 under the second working voltage provided by the direct-current stabilized power supply by the ammeter, acquiring a real-time working voltage U2 of the motor 5 under the second working voltage provided by the direct-current stabilized power supply by the voltmeter, acquiring an actual operating speed V2 of the motor 5 under the second working voltage provided by the direct-current stabilized power supply by the tachometer 4, and recording the acquired effective working current I2rms, the real-time working voltage U2 and the actual operating speed V2; and finally, according to the collected effective working current I1rms, the real-time working voltage U1, the actual running speed V1, the effective working current I2rms, the real-time working voltage U2 and the actual running speed V2, calculating the phase resistance of the motor 5 by using the formula (5) described in the embodiment 1.
It should be understood that the above-mentioned embodiments of the present invention are only examples for clearly illustrating the technical solutions of the present invention, and are not intended to limit the specific embodiments of the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention claims should be included in the protection scope of the present invention claims.
Claims (10)
1. A brushed dc motor phase resistance measurement device, the device comprising: the device comprises a power supply part, a current acquisition part, a voltage acquisition part and a speed measuring device; the power supply part is connected with the motor; the voltage acquisition component is connected with the motor; the current acquisition component is connected with the motor; the speed measuring device is connected with an output shaft of the motor.
2. The device for measuring the phase resistance of the brushed direct-current motor according to claim 1, wherein the power supply component is a regulated direct-current power supply, the positive pole of the regulated direct-current power supply is connected with the positive pole of the motor, and the negative pole of the regulated direct-current power supply is connected with the negative pole of the motor.
3. The device for measuring the phase resistance of the brushed direct-current motor according to claim 1, wherein the voltage acquisition component and the current acquisition component are the same acquisition equipment, the same acquisition equipment is an oscilloscope, the anode of a voltage probe of the oscilloscope is connected with the anode of the motor, and the cathode of the voltage probe of the oscilloscope is connected with the cathode of the motor; and a current probe of the oscilloscope is connected with the anode of the motor.
4. The device for measuring the phase resistance of the brushed direct-current motor according to claim 1, further comprising a coupler, wherein the speed measuring device is connected with an output shaft of the motor through the coupler.
5. The device for measuring the phase resistance of the brushed direct-current motor according to any one of claims 1 or 4, wherein the speed measuring device is a digital display linear speed measuring tachometer.
6. The device for measuring the phase resistance of the brushed direct current motor according to claim 1, wherein the current collecting component is an ammeter, and the ammeter is connected with the motor.
7. The device for measuring the phase resistance of the brushed direct current motor according to claim 1, wherein the current collecting component is a multimeter, and the multimeter is connected with the motor.
8. The apparatus as claimed in claim 1, wherein the voltage acquisition component is a voltmeter, and the voltmeter is connected to the motor.
9. The device for measuring the phase resistance of the brushed direct-current motor according to claim 1, further comprising a fixing frame, wherein the motor and the speed measuring device are mounted on the fixing frame.
10. The device for measuring the phase resistance of the brushed direct-current motor according to claim 9, wherein the fixing frame comprises a fixing frame platform, a motor fixing frame and a speed measuring device fixing frame, the motor fixing frame and the speed measuring device fixing frame are respectively installed on the fixing frame platform, and the motor is installed on the motor fixing frame; the speed measuring device is installed on the speed measuring device fixing frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020960911.XU CN212540539U (en) | 2020-05-29 | 2020-05-29 | Brush direct current motor phase resistance measuring device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020960911.XU CN212540539U (en) | 2020-05-29 | 2020-05-29 | Brush direct current motor phase resistance measuring device |
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| CN212540539U true CN212540539U (en) | 2021-02-12 |
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| CN202020960911.XU Active CN212540539U (en) | 2020-05-29 | 2020-05-29 | Brush direct current motor phase resistance measuring device |
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