CN111983269A - Signal simulator for rotation speed sensor of traction converter of monorail vehicle - Google Patents
Signal simulator for rotation speed sensor of traction converter of monorail vehicle Download PDFInfo
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- CN111983269A CN111983269A CN202010778174.6A CN202010778174A CN111983269A CN 111983269 A CN111983269 A CN 111983269A CN 202010778174 A CN202010778174 A CN 202010778174A CN 111983269 A CN111983269 A CN 111983269A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/20—Modifications of basic electric elements for use in electric measuring instruments; Structural combinations of such elements with such instruments
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/28—Provision in measuring instruments for reference values, e.g. standard voltage, standard waveform
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/005—Testing of electric installations on transport means
- G01R31/008—Testing of electric installations on transport means on air- or spacecraft, railway rolling stock or sea-going vessels
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/34—Testing dynamo-electric machines
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
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Abstract
The invention discloses a signal simulator for a rotational speed sensor of a traction converter of a monorail vehicle, which comprises a first interface circuit, a power supply circuit, a working circuit and a second interface circuit, wherein the first interface circuit is connected with the power supply circuit; the front end of the first interface circuit is connected with an input power supply, and the rear end of the first interface circuit is connected with a power supply circuit; the power supply circuit is connected with the working circuit; the front end of the second interface circuit is connected with the working circuit, and the rear end of the second interface circuit is connected with the speed signal sampling circuit of the converter; the working circuit comprises an excitation signal processing circuit, a signal generating circuit, a sine signal processing circuit, a sine signal-to-cosine signal conversion circuit, a positive and negative rotation signal switching circuit and a multiplier circuit; the speed signal simulation device has the advantages that forward and reverse speed signal simulation can be realized, and forward and reverse speed signal simulation can be realized through the second dial switch S2; the change of the speed signal can be realized through the first dial switch S1; the signal of the rotary transformer with various models can be simulated.
Description
Technical Field
The invention belongs to the field of rail transit traction converter testing, and particularly relates to a signal simulator for a rotational speed sensor of a traction converter of a monorail vehicle.
Background
Due to the rapid development of medium-traffic volume rail transit transportation, the application of the permanent magnet motor in the rail transit industry is more and more extensive, and the rotary transformer is widely applied to angle and speed sampling of the permanent magnet motor due to high reliability and good precision, so that an angle and speed sampling circuit needs to be tested and the sampling precision of the angle and speed sampling circuit needs to be verified in the test of the traction converter of the permanent magnet motor, in the past tests, a rotary transformer entity is mostly adopted for testing, and the method is limited by various factors such as fields and the like and is not beneficial to testing.
Disclosure of Invention
The invention aims to provide a signal simulator for a rotary speed sensor of a traction converter of a monorail vehicle, which is used for realizing forward and reverse rotation switching and is a simulator for speed signals of a rotary transformer with adjustable speed level.
The technical solution for realizing the purpose of the invention is as follows:
a signal simulator for a rotational speed sensor of a traction converter of a monorail vehicle comprises a first interface circuit, a power supply circuit, a working circuit and a second interface circuit;
the front end of the first interface circuit is connected with an input power supply, and the rear end of the first interface circuit is connected with the power supply circuit and used for supplying an external input power supply to the power supply circuit;
the power supply circuit is connected with the working circuit and used for converting an externally input power supply into a voltage required by a chip on the working circuit to supply power;
the front end of the second interface circuit is connected with the working circuit, the rear end of the second interface circuit is connected with the converter speed signal sampling circuit, and the second interface circuit is used for outputting a speed analog signal generated by the working circuit to the speed signal sampling circuit on the main control board of the traction converter of the monorail vehicle and inputting an excitation signal output on the main control board of the traction converter of the monorail vehicle to the excitation signal processing circuit on the working circuit;
the working circuit comprises an excitation signal processing circuit, a signal generating circuit, a sine signal processing circuit, a sine signal-to-cosine signal conversion circuit, a positive and negative rotation signal switching circuit and a multiplier circuit;
the signal generating circuit is used for generating a sinusoidal signal with 3 adjustable levels of frequency and outputting the sinusoidal signal to the sinusoidal signal processing circuit, the sinusoidal signal conversion cosine signal circuit and the positive and negative rotation signal switching circuit;
the excitation signal processing circuit is used for reducing the amplitude of an excitation signal output by the main control board of the traction converter of the monorail vehicle and then outputting the amplitude to the multiplier circuit;
the sine signal processing circuit is used for reducing the amplitude of the sine signal generated by the signal generating circuit and then outputting the amplitude to the sine signal-to-cosine signal conversion circuit, the forward and reverse signal switching circuit and the multiplier circuit;
the sine signal-to-cosine signal circuit is used for converting the signal of the sine signal processing circuit into a cosine signal with equal amplitude and outputting the cosine signal to the multiplier circuit;
the forward and reverse rotation signal switching circuit is used for converting the signal of the sinusoidal signal processing circuit into an inverted sinusoidal signal and outputting the inverted sinusoidal signal to the multiplier circuit, so that the direction of the analog speed signal is changed;
the multiplier circuit is used for multiplying the signals output by the excitation signal processing circuit with the signals output by the chord signal processing circuit, the sine signal to cosine signal conversion circuit and the forward and reverse signal switching circuit and outputting the multiplied signals to simulate the sine and cosine signals of the rotary transformer so as to simulate the speed signals.
Compared with the prior art, the invention has the following remarkable advantages:
(1) the speed signal simulation device has the advantages of realizing forward and reverse speed signal simulation, and realizing forward and reverse speed signal simulation through the second dial switch S2.
(2) The advantage of adjustable speed signal is achieved, and the change of speed signal can be realized by the first dial switch S1.
(3) All the devices are formed by analog circuit devices and are integrated on a circuit board, so that the device is small in size, easy to carry and low in cost.
(4) The simulation device has the advantages of strong applicability, can simulate signals of rotary transformers of various models, and can simulate the signals of the rotary transformers of various models by adjusting circuit parameters in the working circuit.
Drawings
FIG. 1 is a general diagram of a speed simulator circuit of the present invention.
Fig. 2 is a first interface circuit diagram.
Fig. 3 is a power supply circuit diagram.
Fig. 4 is a circuit diagram of a signal generating circuit, a sine signal processing circuit, a sine signal to cosine signal conversion circuit, and a positive and negative rotation signal switching circuit.
Fig. 5 is a circuit diagram of a multiplier.
Fig. 6 is a second interface circuit diagram.
Detailed Description
The invention is further described with reference to the following figures and embodiments.
With reference to fig. 1-6, a signal simulator for a single-track vehicle traction converter rotation speed sensor according to the invention comprises a first interface circuit X1, a power supply circuit, an operating circuit and a second interface circuit X2;
the front end of the first interface circuit X1 is connected with an input power supply, and the rear end is connected with a power supply circuit, and is used for supplying an externally input DC30V power supply to the power supply circuit.
The power supply circuit is connected with the working circuit and used for converting an externally input DC30V power supply into a +/-12V power supply to supply power to the chip on the working circuit.
The front end of the second interface circuit X2 is connected with a working circuit, the rear end of the second interface circuit X2 is connected with a converter speed signal sampling circuit, and the second interface circuit X2 is used for outputting a speed analog signal generated by the working circuit to the speed signal sampling circuit on the main control board of the traction converter of the monorail vehicle, and simultaneously inputting an excitation signal output on the main control board of the traction converter of the monorail vehicle to an excitation signal processing circuit on the working circuit.
The working circuit comprises an excitation signal processing circuit, a signal generating circuit, a sine signal processing circuit, a sine signal-to-cosine signal conversion circuit, a positive and negative rotation signal switching circuit and a multiplier circuit;
the signal generating circuit is used for generating a sinusoidal signal with adjustable 3 levels of frequency through the first signal generating chip U3 and a peripheral circuit thereof and outputting the sinusoidal signal to the sinusoidal signal processing circuit, the sinusoidal signal conversion cosine signal circuit and the positive and negative rotation signal switching circuit.
The excitation signal processing circuit is used for reducing the amplitude of an excitation signal output by the main control board of the traction converter of the single-rail vehicle through the second operational amplifier chip U2A and then outputting the reduced amplitude to the multiplier circuit.
The sine signal processing circuit is used for reducing the amplitude of the sine signal generated by the signal generating circuit through the second operational amplifier chip U5A and then outputting the amplitude to the sine signal conversion cosine signal circuit, the positive and negative rotation signal switching circuit and the multiplier circuit.
The sine signal-to-cosine signal conversion circuit is used for converting the signal of the sine signal processing circuit into a cosine signal with equal amplitude through the second operational amplifier chip U5B and outputting the cosine signal to the multiplier circuit.
The forward and reverse signal switching circuit is used for converting a signal of the sinusoidal signal processing circuit into an inverted sinusoidal signal through the second operational amplifier chip U2B and outputting the inverted sinusoidal signal to the multiplier circuit, and the direction of the analog speed signal is changed through the second dial switch S2.
The multiplier circuit is used for multiplying the signals output by the excitation signal processing circuit and the signals output by the chord signal processing circuit, the sine signal-to-cosine signal conversion circuit and the forward and reverse signal switching circuit through the first multiplier chip U6 and the second multiplier chip U7 to output sine and cosine signals of the analog rotary transformer, so that the speed signal is simulated.
The power supply circuit comprises a first LDO chip U1, a second LDO chip U4, a fifth resistor R5, a tenth resistor R10, a second capacitor C2, a sixth capacitor C6, a third capacitor C3, a seventh capacitor C7, a fourth capacitor C4, an eighth capacitor C8, and a No. 4 pin of the first interface circuit X1 is the anode 30VP of the input end of the interface circuit, and a No. 2 pin is the cathode 30VN of the input end of the first interface circuit X1.
A pin 4 of the first interface circuit X1 is connected to a pin 1 of the fifth resistor R5, a pin 2 of the first interface circuit X1 is connected to a pin 2 of the 10 th resistor R10, a pin 2 of the fifth resistor R5 is connected to a pin 1 of the tenth resistor R10, a pin 2 of the fifth resistor R5 is connected to a pin 1 of the tenth resistor R10 and GND, a pin 1 of the fifth resistor R5 is connected to a pin 1 of the second capacitor C2, a pin 2 of the tenth resistor R10 is connected to a pin 2 of the sixth capacitor C6, a pin 2 of the second capacitor C2 is connected to a pin 1 of the sixth capacitor C6, a pin 2 of the second capacitor C2 is connected to a pin 1 of the sixth capacitor C6, a pin 1 of the first LDO chip U1 is connected to a pin 1 of the second capacitor C2, a pin 2 of the first LDO chip U1 is connected to a pin 2 of the third LDO chip U1, a pin 2 of the first LDO chip U6863 is connected to a pin 2 of the third capacitor C6951 of the second LDO, a pin of the LDO chip U828653 is connected to a pin 2 of the second LDO chip GND, and GND, a pin 3 of the second LDO chip U4 is connected to a pin 2 of the seventh capacitor C7, a pin 2 of the third capacitor C3 is connected to a pin 1 of the seventh capacitor C7 and then connected to GND, a pin 1 of the third capacitor C3 is connected to a pin 1 of the fourth capacitor C4, a pin 2 of the seventh capacitor C7 is connected to a pin 2 of the eighth capacitor C8, a pin 2 of the fourth capacitor C4 is connected to a pin 1 of the eighth capacitor C8 and then connected to GND of the operating circuit, a pin 1 of the fourth capacitor C4 is connected to a +12V power line of the operating circuit, and a pin 2 of the eighth capacitor C8 is connected to a-12V power line of the operating circuit; +12V, -12V and GND are the whole board power supply of the working circuit.
The excitation signal processing circuit comprises a second operational amplifier chip U2A, a first resistor R1, a first capacitor C1, a fourth resistor R4 and an eighth resistor R8;
a pin 3 of the second operational amplifier chip U2A is connected with a pin 1 of the first resistor R1; a pin 3 of the second operational amplifier chip U2A is connected with a pin 1 of the first capacitor C1; 2 feet of the first capacitor C2 are connected with 2 feet of the first capacitor C1 and then connected with GND, 2 feet of the second operational amplifier chip U2A are connected with 1 foot of the second operational amplifier chip U2A, 4 feet of the second operational amplifier chip U2A are connected with 12V +, and 8 feet of the second operational amplifier chip U2A are connected with 12V-.
The signal generating circuit comprises a first signal generating chip U3, a third resistor R3, a 6 th slide rheostat R6, a seventh resistor R7, a ninth resistor R9, an 11 th resistor R11, a 9 th resistor R9, a 13 th slide rheostat R13, a fourteenth resistor R14, a second slide rheostat R2, a 5 th capacitor C5, a 9 th capacitor C9, a tenth capacitor C10, a twelfth capacitor C12, a 13 th capacitor C13, a fourteenth capacitor C14, a fifteenth capacitor C15 and a first toggle switch S1;
the pin 2 of the first signal generating chip U3 is connected with the pin 2 of a nineteenth resistor R19; the pin 4 of the first signal generating chip U3 is connected with the pin 1 of the third resistor R3; the pin 5 of the third signal generating chip U3 is connected with the pin 1 of the 7 th resistor R7; a pin 2 of the third resistor R3 is connected to a pin 1 of the 6 th sliding resistor R6, a pin 2 of the seventh resistor R7 is connected to a pin 2 of the 6 th sliding resistor R6, a pin 3 of the 6 th sliding resistor R6 is connected to a pin 6 of the first signal generating chip U3, a pin 6 of the first signal generating chip U3 is connected to 12V +, a pin 8 of the first signal generating chip U3 is connected to a pin 1 of the 9 th capacitor C9, a pin 2 of the 9 th capacitor C9 is connected to 12V +, a pin 8 of the first signal generating chip U3 is connected to a pin 3 of the thirteenth resistor R13, a pin 1 of the thirteenth resistor R13 is connected to a pin 2 of the eleventh resistor R11, a pin 1 of the eleventh resistor R11 is connected to a pin 2 of the ninth resistor R9, a pin 1 of the ninth resistor R6 is connected to 12V + 3, a pin 2 of the thirteenth resistor R13 is connected to a pin 12V-9 of the first signal generating chip U3, a pin 1 of the fourteenth resistor R14 is connected with a pin 12V +, a pin 10 of the first signal generating chip U3 is connected with pins 1, 3 and 5 of the first toggle switch, a pin 11 of the first signal generating chip U3 is connected with a pin 12V-, a pin 12 of the first signal generating chip U3 is connected with a pin 3 of the second slide rheostat R2, a pin 2 of the second slide rheostat R2 is connected with a pin 12V-, a pin 1 of the ninth capacitor C9 is connected with a pin 12 of the first toggle switch, a pin 1 of the tenth capacitor C10 is connected with a pin 10 of the first toggle switch, a pin 1 of the twelfth capacitor C12 is connected with a pin 7 of the first toggle switch, a pin 2 of the ninth capacitor C9, a pin 2 of the tenth capacitor C10, and a pin 2 of the twelfth capacitor C12 is connected with a pin 12V-in a short circuit manner.
The sinusoidal signal processing circuit comprises a first operational amplifier chip U5A, a fifteenth resistor R15, an eleventh capacitor C11, a nineteenth resistor R19 and a twenty-first resistor R21;
the 3 feet of the first operational amplifier chip U5A are connected with the 1 foot of an eleventh capacitor C11, the 1 foot of a fifteenth resistor R15 is connected with the 2 feet of a nineteenth resistor R19, the 2 feet of the fifteenth resistor and the 2 feet of the eleventh capacitor C11 are connected with GND, the 2 feet of the first operational amplifier chip U5A are connected with the 1 foot of a twenty-first resistor R21, the 1 foot of the first operational amplifier chip U5A is connected with the 2 foot of the twenty-first resistor R21 is connected with GND, the 4 feet of the first operational amplifier chip U5A are connected with 12V +, and the 8 feet of the first operational amplifier chip U5A are connected with 12V-.
The sine signal-to-cosine signal conversion circuit is composed of a first operational amplifier chip U5B, a twenty-second resistor R22, a twenty-fourth resistor R24, a twenty-third slide rheostat R23 and a twenty-fifth resistor R25;
the pin 6 of the first operational amplifier chip U5B is connected to the pin 2 of the twenty-second resistor R22, the pin 1 of the twenty-second resistor R22 is connected to the pin 1 of the first operational amplifier chip U5A, the pin 5 of the first operational amplifier chip U5B is connected to the pin 2 of the twenty-third sliding rheostat R23, the pin 2 of the twenty-third sliding rheostat R23 is connected to the pin 3 of the twenty-third sliding rheostat R23, the pin 1 of the twenty-third sliding rheostat R23 is connected to the pin 2 of the twenty-fourth resistor R24, the pin 1 of the twenty-fourth resistor R24 is connected to the pin 1 of the first operational amplifier chip U5A, the pin 5 of the first operational amplifier chip U5B is connected to the pins 2, 4, 6 of the first toggle switch, the pin 7, pin 9, and pin 11 of the first toggle switch S1 are connected to the pin 1 of the thirteenth capacitor C13, the pin 1 of the fourteenth capacitor C14, the pin 1, the fourteenth capacitor C23, the pin 14, the 2 pins of the fifteenth capacitor C15 are shorted together and then connected to GND.
The positive and negative rotation signal switching circuit comprises a second operational amplifier chip U2B, a sixteenth resistor R16, a seventeenth resistor R17, an eighteenth resistor R18 and a twelfth resistor R12; a second dip switch S2.
The pin 6 of the second operational amplifier chip U2B is connected with the pin 1 of the twelfth resistor R12, the pin 2 of the sixteenth resistor R16, the pin 1 of the sixteenth resistor R16 is connected with the pin 1 of the first operational amplifier chip U5A, the pin 5 of the second operational amplifier chip U2B is connected with the pin 2 of the seventeenth resistor R17, the pin 1 of the seventeenth resistor R17 is connected with GND, the pin 7 of the second operational amplifier chip U2B is connected with the pin 2 of the eighteenth resistor R18, and the pin 2 of the eighteenth resistor R18 is connected with the pin 2 of the twelfth resistor R12.
The multiplier circuit comprises a first multiplier chip U6, a second multiplier chip U7, a twenty-seventh resistor R27, a twenty-ninth resistor R29, a seventeenth capacitor C17, a nineteenth capacitor C19, a second dial switch S2, a twenty-sixth resistor R26, a twenty-eighth resistor R28, a sixteenth capacitor C16 and an eighteenth capacitor C18;
a pin 1 of the second multiplier chip U7 is connected with a pin 1 of a second operational amplifier chip U2A, a pin 3 of the second multiplier chip U7 is connected with a pin 1 of a first fifth operational amplifier chip U5B, a pin 2 of the second multiplier chip U7 is short-circuited with a pin 4 of a second multiplier chip U7 and connected with GND, and a pin 8 of the second multiplier chip U7 is connected with a pin 1 and 12V + of a seventeenth capacitor C17; a pin 2 of a seventeenth capacitor C17 is connected with GND, a pin 5 of the second multiplier chip U7 is connected with a pin 1 and 12V-of a nineteenth capacitor C19, a pin 2 of the nineteenth capacitor C19 is connected with GND, a pin 7 of the second multiplier chip U7 is connected with a pin 1 of a twenty-seventh resistor R27, a pin 7 of the second interface circuit X2, a pin 2 of the twenty-seventh resistor R27 is connected with a pin 1 of the twenty-ninth resistor R29 and then connected with a pin 6 of the second multiplier chip U7, and a pin 2 of the twenty-ninth resistor R29 is connected with GND.
A pin 1 of the first multiplier chip U6 is connected to a pin 1 of the second operational amplifier chip U2A, a pin 3 of the first multiplier chip U6 is connected to pins 3 and 4 of the second toggle switch S2, a pin 1 of the second toggle switch S2 is connected to a pin 1 of the first operational amplifier chip U5A, a pin 2 of the second toggle switch S2 is connected to a pin 2 of the eighteenth resistor R18, a pin 2 of the first multiplier chip U6 is short-circuited to a pin 4 of the first multiplier chip U6 and connected to GND, a pin 8 of the first multiplier chip U6 is connected to a pin 1 and 12V + of the sixteenth capacitor C16, a pin 2 of the sixteenth capacitor C16 is connected to a pin 2 of the first multiplier chip U6 is connected to a pin 1 and 12V-of the eighteenth capacitor C18, a pin 2 of the eighteenth capacitor C638 is connected to a pin 2 of the multiplier 638, a pin 7 of the first multiplier chip U23 is connected to a pin GND of the twenty-th resistor R6864, a pin X-connector of the second multiplier chip U638, and a pin 2 of the twenty-sixth resistor R26 is connected with a pin 1 of the twenty-eighth resistor R28 and then connected with a pin 6 of the first multiplier chip U6, and a pin 2 of the twenty-eighth resistor R28 is connected with GND.
The first interface circuit X1 includes pin No. 1-4, wherein pin No. 4 and pin No. 2 connect respectively 1 pin of first LDO chip U1 and 2 pin of second LDO chip U4, second interface circuit X2 includes pin No. 1-8, wherein pin No. 1 and pin No. 2 connect respectively second operational amplifier U2A peripheral fourth resistance R4's pin No. 1 and second operational amplifier chip U2A peripheral eighth resistance R8's pin No. 4 and pin No. 5 connect respectively first multiplier chip U6's pin No. 7 and GND, and pin No. 7 and pin No. 8 connect respectively second multiplier chip U7's pin No. 7 and GND.
The signal simulator is used for simulating a signal of a rotary speed sensor of a traction converter of a monorail vehicle, can realize the step position regulation of the speed signal and the simulation of the speed direction, when a test needs to be carried out on a signal sampling module circuit of the rotary speed sensor of the traction converter of the monorail vehicle, a DC30V power supply is supplied to a first interface circuit X1, a pin 1 and a pin 2 of a second interface circuit X2 are connected with an excitation signal Vcarrier of a main control board of the traction converter of the monorail vehicle, a pin 4 and a pin 5 of a second interface circuit X2 are connected with a sine speed signal sampling port on the main control board of the traction converter of the monorail vehicle, a pin 7 and a pin 8 of a second interface circuit X2 are connected with a cosine speed signal sampling port on the main control board of the traction converter of the monorail vehicle, and at the moment, a second dial switch S2 can pass through the pin 4, the pin 5 and the pin 7 of a second interface circuit X2 by regulating a first, a speed signal sampling circuit for testing a traction converter of a monorail vehicle by using an analog signal with adjustable 8-pin output speed and direction has the following specific realization principle: the first signal generating chip U3 generates a sinusoidal signal Vsin with 2.64V amplitude and 3 adjustable levels of frequency, the sinusoidal signal Vsin generates a signal Vsinout with 1.5V amplitude and equal frequency through a sinusoidal signal processing circuit composed of a first operational amplifier chip U5A and a peripheral circuit, the Vsinout signal is divided into 2 paths, 1 path generates a cosine signal Vcosout with 1.5V amplitude and phase lag Vsinout 90 degrees through a sinusoidal signal conversion cosine signal circuit composed of a first operational amplifier chip U5B and a peripheral circuit, the other path generates a signal Vsinoutf with 180 degrees difference with the Vsinout through a positive and negative rotation signal switching circuit composed of a second operational amplifier chip U2B, meanwhile, the main control board of the single-rail vehicle traction converter generates an excitation signal Vcarrier with 7V amplitude and 10kHz frequency, the signal is sent to an excitation signal processing circuit composed of a second operational amplifier U2A through a 1 pin and a 2 pin of a second interface circuit X2, the signal is processed by a second operational amplifier U2A to generate a sinusoidal signal Vcarrierout with amplitude of 1.5V and frequency of 10kHz, when simulating a forward speed signal, the No. 1 switch of a dial switch S1 is dialed to the ON position, the No. 2 switch is kept unchanged, the signal Vcarrierout and the signal Vsinout are subjected to analog multiplication by a multiplier circuit formed by a first multiplier chip U6 to generate a sinusoidal signal of the rotary transformer, the signal Vcarrierout and the signal Vcoout are subjected to analog multiplication by a multiplier circuit formed by a second multiplier chip U7 to generate a cosine signal of the rotary transformer, when simulating an inverse speed signal, the No. 2 switch of the first dial switch S1 is dialed to the ON position, the No. 1 switch is kept unchanged, the signal Vcarrierout and the signal Vcaloxout are subjected to analog multiplication by a multiplier circuit formed by a first multiplier chip U6 to generate a signal of the rotary transformer, the multiplier circuit formed by a second sinusoidal chip U7 is used for multiplying the signal Vcarrierout and the signal Vcalosojou, the method comprises the steps of generating a cosine signal of a rotary transformer, isolating the signal Vsinout from the signal Vsinout through a second dial switch S2 to realize switching of forward and reverse signals, when a speed value needs to be changed, changing 3 level bit values of the speed through a first dial switch S1, when the speed level needs to be adjusted to be 1, dialing a No. 2 switch of a dial switch S1 to an ON position, keeping the rest of the speed level to be OFF positions, dialing a No. 2 switch of a first dial switch S1 to the ON position when the speed level needs to be adjusted to be 2, keeping the rest of the speed level to be OFF positions, dialing a No. 5 switch of the first dial switch S1 to the ON position when the speed level needs to be adjusted to be 3, keeping the rest of the speed level to be OFF positions, and forming a DC30Vdc conversion +/-12V power conversion circuit by the first LDO chip U1 and the second LDO chip U4 to supply power to a circuit board.
Claims (9)
1. A signal simulator for a rotational speed sensor of a traction converter of a monorail vehicle is characterized by comprising a first interface circuit, a power supply circuit, a working circuit and a second interface circuit;
the front end of the first interface circuit is connected with an input power supply, and the rear end of the first interface circuit is connected with the power supply circuit and used for supplying an external input power supply to the power supply circuit;
the power supply circuit is connected with the working circuit and used for converting an externally input power supply into a voltage required by a chip on the working circuit to supply power;
the front end of the second interface circuit is connected with the working circuit, the rear end of the second interface circuit is connected with the converter speed signal sampling circuit, and the second interface circuit is used for outputting a speed analog signal generated by the working circuit to the speed signal sampling circuit on the main control board of the traction converter of the monorail vehicle and inputting an excitation signal output on the main control board of the traction converter of the monorail vehicle to the excitation signal processing circuit on the working circuit;
the working circuit comprises an excitation signal processing circuit, a signal generating circuit, a sine signal processing circuit, a sine signal-to-cosine signal conversion circuit, a positive and negative rotation signal switching circuit and a multiplier circuit;
the signal generating circuit is used for generating a sinusoidal signal with 3 adjustable levels of frequency and outputting the sinusoidal signal to the sinusoidal signal processing circuit, the sinusoidal signal conversion cosine signal circuit and the positive and negative rotation signal switching circuit;
the excitation signal processing circuit is used for reducing the amplitude of an excitation signal output by the main control board of the traction converter of the monorail vehicle and then outputting the amplitude to the multiplier circuit;
the sine signal processing circuit is used for reducing the amplitude of the sine signal generated by the signal generating circuit and then outputting the amplitude to the sine signal-to-cosine signal conversion circuit, the forward and reverse signal switching circuit and the multiplier circuit;
the sine signal-to-cosine signal circuit is used for converting the signal of the sine signal processing circuit into a cosine signal with equal amplitude and outputting the cosine signal to the multiplier circuit;
the forward and reverse rotation signal switching circuit is used for converting the signal of the sinusoidal signal processing circuit into an inverted sinusoidal signal and outputting the inverted sinusoidal signal to the multiplier circuit, so that the direction of the analog speed signal is changed;
the multiplier circuit is used for multiplying the signals output by the excitation signal processing circuit with the signals output by the chord signal processing circuit, the sine signal to cosine signal conversion circuit and the forward and reverse signal switching circuit and outputting the multiplied signals to simulate the sine and cosine signals of the rotary transformer so as to simulate the speed signals.
2. The signal simulator for the rotation speed sensor of the traction converter of the monorail vehicle as defined in claim 1, wherein said power circuit comprises a first LDO chip U1, a second LDO chip U4, a fifth resistor R5, a tenth resistor R10, a second capacitor C2, a sixth capacitor C6, a third capacitor C3, a seventh capacitor C7, a fourth capacitor C4, an eighth capacitor C8, pin No. 4 of said first interface circuit X1 being said interface circuit input positive 30VP, pin No. 2 being said first interface circuit X1 input negative 30 VN; a pin 4 of the first interface circuit X1 is connected to a pin 1 of a fifth resistor R5, a pin 2 of the first interface circuit X1 is connected to a pin 2 of a 10 th resistor R10, a pin 2 of a fifth resistor R5 is connected to a pin 1 of a tenth resistor R10, a pin 2 of the fifth resistor R5 is connected to a pin 1 of a tenth resistor R10 and GND, a pin 1 of the fifth resistor R5 is connected to a pin 1 of a second capacitor C2, a pin 2 of the tenth resistor R10 is connected to a pin 2 of a sixth capacitor C6, a pin 2 of the second capacitor C2 is connected to a pin 1 of a sixth capacitor C6, a pin 2 of the second capacitor C2 is connected to a pin 1 of the sixth capacitor C6, a pin 1 of the first LDO chip U1 is connected to a pin 1 of the second capacitor C2, a pin 2 of the first chip U1 is connected to a pin 2 of the sixth capacitor C6, a pin 1 of the first LDO chip U1 is connected to a pin 2 of the third LDO C3, a pin of the sixth capacitor C828656 is connected to a pin GND, and GND, a pin 3 of the second LDO chip U4 is connected to a pin 2 of the seventh capacitor C7, a pin 2 of the third capacitor C3 is connected to a pin 1 of the seventh capacitor C7 and then connected to GND, a pin 1 of the third capacitor C3 is connected to a pin 1 of the fourth capacitor C4, a pin 2 of the seventh capacitor C7 is connected to a pin 2 of the eighth capacitor C8, a pin 2 of the fourth capacitor C4 is connected to a pin 1 of the eighth capacitor C8 and then connected to GND of the operating circuit, a pin 1 of the fourth capacitor C4 is connected to the +12V power line of the operating circuit, and a pin 2 of the eighth capacitor C8 is connected to the-12V power line of the operating circuit.
3. The signal simulator for the rotation speed sensor of the traction converter of the monorail vehicle as defined in claim 1, wherein said excitation signal processing circuit comprises a second operational amplifier chip U2A, a first resistor R1, a first capacitor C1, a fourth resistor R4, an eighth resistor R8;
a pin 3 of the second operational amplifier chip U2A is connected with a pin 1 of the first resistor R1; a pin 3 of the second operational amplifier chip U2A is connected with a pin 1 of the first capacitor C1; 2 feet of the first capacitor C2 are connected with 2 feet of the first capacitor C1 and then connected with GND, 2 feet of the second operational amplifier chip U2A are connected with 1 foot of the second operational amplifier chip U2A, 4 feet of the second operational amplifier chip U2A are connected with 12V +, and 8 feet of the second operational amplifier chip U2A are connected with 12V-.
4. The signal simulator for the rotation speed sensor of the traction converter of the monorail vehicle as defined in claim 1, wherein said signal generating circuit comprises a first signal generating chip U3, a third resistor R3, a 6 th sliding rheostat R6, a seventh resistor R7, a ninth resistor R9, an 11 th resistor R11, a 9 th resistor R9, a 13 th sliding rheostat R13, a fourteenth resistor R14, a second sliding rheostat R2, a 5 th capacitor C5, a 9 th capacitor C9, a tenth capacitor C10, a twelfth capacitor C12, a 13 th capacitor C13, a fourteenth capacitor C14, a fifteenth capacitor C15, a first code-dialing switch S1;
the pin 2 of the first signal generating chip U3 is connected with the pin 2 of a nineteenth resistor R19; the pin 4 of the first signal generating chip U3 is connected with the pin 1 of the third resistor R3; the pin 5 of the third signal generating chip U3 is connected with the pin 1 of the 7 th resistor R7; a pin 2 of the third resistor R3 is connected to a pin 1 of the 6 th sliding resistor R6, a pin 2 of the seventh resistor R7 is connected to a pin 2 of the 6 th sliding resistor R6, a pin 3 of the 6 th sliding resistor R6 is connected to a pin 6 of the first signal generating chip U3, a pin 6 of the first signal generating chip U3 is connected to 12V +, a pin 8 of the first signal generating chip U3 is connected to a pin 1 of the 9 th capacitor C9, a pin 2 of the 9 th capacitor C9 is connected to 12V +, a pin 8 of the first signal generating chip U3 is connected to a pin 3 of the thirteenth resistor R13, a pin 1 of the thirteenth resistor R13 is connected to a pin 2 of the eleventh resistor R11, a pin 1 of the eleventh resistor R11 is connected to a pin 2 of the ninth resistor R9, a pin 1 of the ninth resistor R6 is connected to 12V + 3, a pin 2 of the thirteenth resistor R13 is connected to a pin 12V-9 of the first signal generating chip U3, a pin 1 of the fourteenth resistor R14 is connected with a pin 12V +, a pin 10 of the first signal generating chip U3 is connected with pins 1, 3 and 5 of the first toggle switch, a pin 11 of the first signal generating chip U3 is connected with a pin 12V-, a pin 12 of the first signal generating chip U3 is connected with a pin 3 of the second slide rheostat R2, a pin 2 of the second slide rheostat R2 is connected with a pin 12V-, a pin 1 of the ninth capacitor C9 is connected with a pin 12 of the first toggle switch, a pin 1 of the tenth capacitor C10 is connected with a pin 10 of the first toggle switch, a pin 1 of the twelfth capacitor C12 is connected with a pin 7 of the first toggle switch, a pin 2 of the ninth capacitor C9, a pin 2 of the tenth capacitor C10, and a pin 2 of the twelfth capacitor C12 is connected with a pin 12V-in a short circuit manner.
5. The signal simulator for the rotation speed sensor of the traction converter of the monorail vehicle as defined in claim 1, wherein said sinusoidal signal processing circuit comprises a first operational amplifier chip U5A, a fifteenth resistor R15, an eleventh capacitor C11, a nineteenth resistor R19, a twenty-first resistor R21;
the 3 feet of the first operational amplifier chip U5A are connected with the 1 foot of an eleventh capacitor C11, the 1 foot of a fifteenth resistor R15 is connected with the 2 feet of a nineteenth resistor R19, the 2 feet of the fifteenth resistor and the 2 feet of the eleventh capacitor C11 are connected with GND, the 2 feet of the first operational amplifier chip U5A are connected with the 1 foot of a twenty-first resistor R21, the 1 foot of the first operational amplifier chip U5A is connected with the 2 foot of the twenty-first resistor R21 is connected with GND, the 4 feet of the first operational amplifier chip U5A are connected with 12V +, and the 8 feet of the first operational amplifier chip U5A are connected with 12V-.
6. The signal simulator for the rotational speed sensor of the traction converter of the monorail vehicle as defined in claim 1, wherein said sine-to-cosine signal circuit is comprised of a first op-amp chip U5B, a twenty-second resistor R22, a twenty-fourth resistor R24, a twenty-third slide rheostat R23, and a twenty-fifth resistor R25;
the pin 6 of the first operational amplifier chip U5B is connected to the pin 2 of the twenty-second resistor R22, the pin 1 of the twenty-second resistor R22 is connected to the pin 1 of the first operational amplifier chip U5A, the pin 5 of the first operational amplifier chip U5B is connected to the pin 2 of the twenty-third sliding rheostat R23, the pin 2 of the twenty-third sliding rheostat R23 is connected to the pin 3 of the twenty-third sliding rheostat R23, the pin 1 of the twenty-third sliding rheostat R23 is connected to the pin 2 of the twenty-fourth resistor R24, the pin 1 of the twenty-fourth resistor R24 is connected to the pin 1 of the first operational amplifier chip U5A, the pin 5 of the first operational amplifier chip U5B is connected to the pins 2, 4, 6 of the first toggle switch, the pin 7, pin 9, and pin 11 of the first toggle switch S1 are connected to the pin 1 of the thirteenth capacitor C13, the pin 1 of the fourteenth capacitor C14, the pin 1, the fourteenth capacitor C23, the pin 14, the 2 pins of the fifteenth capacitor C15 are shorted together and then connected to GND.
7. The signal simulator for the rotation speed sensor of the traction converter of the monorail vehicle as defined in claim 1, wherein said positive and negative rotation signal switching circuit comprises a second operational amplifier chip U2B, a sixteenth resistor R16, a seventeenth resistor R17, an eighteenth resistor R18, a twelfth resistor R12; a second dip switch S2; the pin 6 of the second operational amplifier chip U2B is connected with the pin 1 of the twelfth resistor R12, the pin 2 of the sixteenth resistor R16, the pin 1 of the sixteenth resistor R16 is connected with the pin 1 of the first operational amplifier chip U5A, the pin 5 of the second operational amplifier chip U2B is connected with the pin 2 of the seventeenth resistor R17, the pin 1 of the seventeenth resistor R17 is connected with GND, the pin 7 of the second operational amplifier chip U2B is connected with the pin 2 of the eighteenth resistor R18, and the pin 2 of the eighteenth resistor R18 is connected with the pin 2 of the twelfth resistor R12.
8. The signal simulator for the single-track vehicle traction converter rotation speed sensor according to claim 1, wherein the multiplier circuit comprises a first multiplier chip U6, a second multiplier chip U7, a twenty-seventh resistor R27, a twenty-ninth resistor R29, a seventeenth capacitor C17, a nineteenth capacitor C19, a second toggle switch S2, a twenty-sixth resistor R26, a twenty-eighth resistor R28, a sixteenth capacitor C16 and an eighteenth capacitor C18;
a pin 1 of the second multiplier chip U7 is connected with a pin 1 of a second operational amplifier chip U2A, a pin 3 of the second multiplier chip U7 is connected with a pin 1 of a first fifth operational amplifier chip U5B, a pin 2 of the second multiplier chip U7 is short-circuited with a pin 4 of a second multiplier chip U7 and connected with GND, and a pin 8 of the second multiplier chip U7 is connected with a pin 1 and 12V + of a seventeenth capacitor C17; a pin 2 of a seventeenth capacitor C17 is connected with GND, a pin 5 of the second multiplier chip U7 is connected with pins 1 and 12V-of a nineteenth capacitor C19, a pin 2 of a nineteenth capacitor C19 is connected with GND, a pin 7 of the second multiplier chip U7 is connected with a pin 1 of a twenty-seventh resistor R27, a pin 7 of the second interface circuit X2, a pin 2 of the twenty-seventh resistor R27 is connected with a pin 1 of the twenty-ninth resistor R29 and then connected with a pin 6 of the second multiplier chip U7, and a pin 2 of the twenty-ninth resistor R29 is connected with GND;
a pin 1 of the first multiplier chip U6 is connected to a pin 1 of the second operational amplifier chip U2A, a pin 3 of the first multiplier chip U6 is connected to pins 3 and 4 of the second dial switch S2, a pin 1 of the second dial switch S2 is connected to a pin 1 of the first operational amplifier chip U5A, a pin 2 of the second dial switch S2 is connected to a pin 2 of the eighteenth resistor R18, a pin 2 of the first multiplier chip U6 is short-circuited to a pin 4 of the first multiplier chip U6 and connected to GND, a pin 8 of the first multiplier chip U6 is connected to a pin 1 and 12V + of the sixteenth capacitor C16, a pin 2 of the sixteenth capacitor C16 is connected to a pin 2 of the first multiplier chip U6 is connected to a pin 1 and 12V-of the eighteenth capacitor C18, a pin 2 of the eighteenth capacitor C638 is connected to a pin 2 of the multiplier 638, a pin 7 of the first multiplier chip U23 is connected to a pin GND of the twenty-th resistor R6864, a pin X-terminal of the twenty-X resistor X68692, and a pin 2 of the twenty-sixth resistor R26 is connected with a pin 1 of the twenty-eighth resistor R28 and then connected with a pin 6 of the first multiplier chip U6, and a pin 2 of the twenty-eighth resistor R28 is connected with GND.
9. The signal simulator for the rotational speed sensor of the traction converter of the monorail vehicle as defined in claim 1, wherein said first interface circuit pin No. 4 and pin No. 2 are connected to pin 1 of a first LDO chip U1 and pin 2 of a second LDO chip U4, respectively.
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Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5162798A (en) * | 1991-06-17 | 1992-11-10 | Pacific Scientific Company | Resolver to digital converter |
| US20080278106A1 (en) * | 2007-05-11 | 2008-11-13 | Fu David T | Apparatus, system, and method for simulating outputs of a resolver to test motor-resolver systems |
| CN201965484U (en) * | 2011-03-22 | 2011-09-07 | 上海金脉电子科技有限公司 | Simulator for simulating motor resolver signal by multiplier |
| JP2011220742A (en) * | 2010-04-06 | 2011-11-04 | Toyo Electric Mfg Co Ltd | Resolver simulation circuit |
| CN102269657A (en) * | 2011-03-22 | 2011-12-07 | 上海金脉电子科技有限公司 | Simulator for simulating output signal of rotary transformer |
| CN204462842U (en) * | 2015-03-27 | 2015-07-08 | 北京经纬恒润科技有限公司 | One revolves varying signal mimic channel |
| CN106017517A (en) * | 2016-07-26 | 2016-10-12 | 上海钧嵌传感技术有限公司 | Non-contact magnetic coding sensor |
| CN106326608A (en) * | 2016-10-28 | 2017-01-11 | 中国电子科技集团公司第五十八研究所 | Sine and cosine modulating signal model for simulating rotary transformation motor |
| CN106953557A (en) * | 2017-03-17 | 2017-07-14 | 深圳市大地和电气股份有限公司 | Rotary transformer converter, signals of rotating transformer acquisition system and acquisition method |
| CN108181601A (en) * | 2018-01-12 | 2018-06-19 | 中国航空工业集团公司北京长城航空测控技术研究所 | A kind of high-precision rotary transformer signal generating method |
| KR20180067129A (en) * | 2016-12-12 | 2018-06-20 | 현대오트론 주식회사 | An Apparatus And A Method For Testing A Resolver |
| CN210952902U (en) * | 2019-11-08 | 2020-07-07 | 珠海市芬诺科技有限公司 | Signal generator for simulating rotary transformer |
-
2020
- 2020-08-05 CN CN202010778174.6A patent/CN111983269B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5162798A (en) * | 1991-06-17 | 1992-11-10 | Pacific Scientific Company | Resolver to digital converter |
| US20080278106A1 (en) * | 2007-05-11 | 2008-11-13 | Fu David T | Apparatus, system, and method for simulating outputs of a resolver to test motor-resolver systems |
| JP2011220742A (en) * | 2010-04-06 | 2011-11-04 | Toyo Electric Mfg Co Ltd | Resolver simulation circuit |
| CN201965484U (en) * | 2011-03-22 | 2011-09-07 | 上海金脉电子科技有限公司 | Simulator for simulating motor resolver signal by multiplier |
| CN102269657A (en) * | 2011-03-22 | 2011-12-07 | 上海金脉电子科技有限公司 | Simulator for simulating output signal of rotary transformer |
| CN204462842U (en) * | 2015-03-27 | 2015-07-08 | 北京经纬恒润科技有限公司 | One revolves varying signal mimic channel |
| CN106017517A (en) * | 2016-07-26 | 2016-10-12 | 上海钧嵌传感技术有限公司 | Non-contact magnetic coding sensor |
| CN106326608A (en) * | 2016-10-28 | 2017-01-11 | 中国电子科技集团公司第五十八研究所 | Sine and cosine modulating signal model for simulating rotary transformation motor |
| KR20180067129A (en) * | 2016-12-12 | 2018-06-20 | 현대오트론 주식회사 | An Apparatus And A Method For Testing A Resolver |
| CN106953557A (en) * | 2017-03-17 | 2017-07-14 | 深圳市大地和电气股份有限公司 | Rotary transformer converter, signals of rotating transformer acquisition system and acquisition method |
| CN108181601A (en) * | 2018-01-12 | 2018-06-19 | 中国航空工业集团公司北京长城航空测控技术研究所 | A kind of high-precision rotary transformer signal generating method |
| CN210952902U (en) * | 2019-11-08 | 2020-07-07 | 珠海市芬诺科技有限公司 | Signal generator for simulating rotary transformer |
Non-Patent Citations (2)
| Title |
|---|
| YU-TING HUANG,ET AL.: "Finite Element Analysis on Characteristics of Rotary Transformers", 《IEEE TRANSACTIONS ON MAGNETICS》 * |
| 刘太广等: "一种基于旋变电机控制的正余弦乘法器设计", 《电子与封装》 * |
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