CN113900475A - System and method for generating rotary transformer excitation signal - Google Patents
System and method for generating rotary transformer excitation signal Download PDFInfo
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- CN113900475A CN113900475A CN202111029139.5A CN202111029139A CN113900475A CN 113900475 A CN113900475 A CN 113900475A CN 202111029139 A CN202111029139 A CN 202111029139A CN 113900475 A CN113900475 A CN 113900475A
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- 230000005284 excitation Effects 0.000 title claims abstract description 47
- 238000000034 method Methods 0.000 title claims abstract description 17
- 230000003321 amplification Effects 0.000 claims abstract description 47
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 47
- 230000000903 blocking effect Effects 0.000 claims abstract description 9
- 230000010354 integration Effects 0.000 abstract description 6
- 238000007796 conventional method Methods 0.000 abstract 1
- 239000003990 capacitor Substances 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/02—Digital function generators
- G06F1/022—Waveform generators, i.e. devices for generating periodical functions of time, e.g. direct digital synthesizers
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03C—MODULATION
- H03C3/00—Angle modulation
- H03C3/02—Details
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
- H03K3/80—Generating trains of sinusoidal oscillations
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2101/00—Indexing scheme relating to the type of digital function generated
- G06F2101/04—Trigonometric functions
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Abstract
The system comprises a main control module, a low-pass filter, a first-stage operational amplification circuit, a high-pass filter circuit, a second-stage operational amplification circuit and an inversion circuit, wherein the main control module is used for generating a digital modulation wave changing according to a sine rule, the low-pass filter is used for converting the digital modulation wave into a sine wave, the first-stage operational amplification circuit is used for carrying out first-stage amplification on the sine wave, the high-pass filter circuit is used for carrying out DC blocking processing on the sine wave, the second-stage operational amplification circuit is used for carrying out second-stage amplification on the sine wave, and the inversion circuit is used for inverting the sine wave to generate a rotary change excitation signal. The method solves the problems of large weight, large volume, high cost and difficult integration of the conventional method for generating the rotary change excitation signal, and has the advantages of low cost, small volume, light weight, easy integration and the like.
Description
Technical Field
The invention belongs to the technical field of rotary transformer control, and particularly relates to a system and a method for generating a rotary transformer excitation signal.
Background
In closed-loop control systems, a resolver or a photoelectric encoder is typically used for angle signal acquisition. When the rotary transformer is used for angle acquisition, a signal source of the rotary transformer is generally provided by an excitation module or an excitation chip or obtained by processing through a digital-to-analog conversion circuit. The excitation module has heavy weight and large volume, needs an independent external power supply, has high price of an excitation chip or a digital-to-analog conversion chip, also needs a peripheral configuration circuit, and is not favorable for the miniaturization, integration and low cost requirements of products.
Disclosure of Invention
The invention overcomes one of the defects of the prior art, provides a system and a method for generating a rotary transformer excitation signal, solves the problems of large weight, large volume, high cost and difficult integration of the conventional rotary transformer excitation signal generation method, and has the advantages of low cost, small volume, light weight, easy integration and the like.
According to an aspect of the present disclosure, the present disclosure provides a system for generating a spin-on excitation signal, the system including: the device comprises a main control module, a low-pass filter, a first-stage operational amplification circuit, a high-pass filter circuit, a second-stage operational amplification circuit and an inverting circuit, wherein the main control module is used for generating a digital modulation wave changing according to a sine rule, the low-pass filter circuit is used for converting the digital modulation wave into a sine wave, the first-stage operational amplification circuit is used for carrying out first-stage amplification on the sine wave, the high-pass filter circuit is used for carrying out blocking processing on the sine wave, the second-stage operational amplification circuit is used for carrying out second-stage amplification on the sine wave, and the inverting circuit is used for inverting the sine wave and generating a rotary-change excitation signal.
In a possible implementation manner, the main control module includes a memory chip and a main control chip, the memory chip stores a data module that changes according to a sine rule in one period, and the main control chip generates the digital modulation wave that changes according to the sine rule according to the data module in a frequency division manner.
In one possible implementation, the spin-change excitation signal includes a spin-change excitation signal high and a spin-change excitation signal low.
In a possible implementation manner, the main control chip is further configured to change the frequency of the spin-change excitation signal by adjusting a frequency division coefficient.
In one possible implementation manner, the amplitude of the spin excitation signal is changed by adjusting the resistance of the configuration circuit of the first-stage operational amplification circuit and the second-stage operational amplification circuit.
According to another aspect of the present disclosure, the present invention provides a method for generating a spin-on excitation signal, the method including:
the method comprises the steps that a main control module is utilized to generate digital modulation waves changing according to a sine rule, the digital modulation waves are converted into sine waves through a low-pass filter, the sine waves are subjected to first-stage amplification twice through a first-stage operational amplification circuit and then subjected to blocking processing through a high-pass filter circuit, the sine waves are subjected to quadruple amplification through a second-stage operational amplification circuit and then subjected to phase inversion through an inverter circuit, and rotary transformer excitation signals meeting requirements are generated.
The invention relates to a system for generating a rotary change excitation signal, which comprises: the device comprises a main control module, a low-pass filter, a first-stage operational amplification circuit, a high-pass filter circuit, a second-stage operational amplification circuit and an inverting circuit, wherein the main control module is used for generating a digital modulation wave changing according to a sine rule, the low-pass filter circuit is used for converting the digital modulation wave into a sine wave, the first-stage operational amplification circuit is used for carrying out first-stage amplification on the sine wave, the high-pass filter circuit is used for carrying out blocking processing on the sine wave, the second-stage operational amplification circuit is used for carrying out second-stage amplification on the sine wave, and the inverting circuit is used for inverting the sine wave and generating a rotary-change excitation signal. The device has the advantages of low cost, small volume, light weight, easy integration and the like.
Drawings
The accompanying drawings are included to provide a further understanding of the technology or prior art of the present application and are incorporated in and constitute a part of this specification. The drawings expressing the embodiments of the present application are used for explaining the technical solutions of the present application, and should not be construed as limiting the technical solutions of the present application.
FIG. 1 illustrates a functional block diagram of a system for generating a spin-on excitation signal according to an embodiment of the present disclosure;
fig. 2 shows a flow chart of a main control chip generating a digital modulation wave according to an embodiment of the present disclosure.
Detailed Description
The following detailed description of the embodiments of the present invention will be provided with reference to the accompanying drawings and examples, so that how to apply the technical means to solve the technical problems and achieve the corresponding technical effects can be fully understood and implemented. The embodiments and the features of the embodiments can be combined without conflict, and the technical solutions formed are all within the scope of the present invention.
The simple rotary transformer excitation signal generating system and method mainly utilize a main control chip to generate a modulating wave, generate a sine wave after passing through a low-pass filter, sequentially perform first-stage amplification through a first-stage operational amplifier, perform DC blocking treatment through the high-pass filter, and then obtain a rotary transformer excitation signal meeting system requirements through a second-stage operational amplifier and an inverter circuit.
Fig. 1 shows a schematic block diagram of a system for generating a spin-on excitation signal according to an embodiment of the present disclosure.
As shown in fig. 1, the system for generating a spin-change excitation signal includes: the main control module, the low-pass filter circuit, the first-stage operational amplification circuit, the high-pass filter circuit, the second-stage operational amplification and the phase reversal circuit.
Fig. 2 shows a flow chart of a main control chip generating a digital modulation wave according to an embodiment of the present disclosure.
As shown in fig. 1, the main control module is configured to generate a digital modulation wave that varies according to a sine rule. The main control module mainly comprises a storage chip, a main control chip and a configuration circuit. The memory chip stores a data module which changes according to a sine rule in one period. The main control chip generates the digital modulation wave changing according to the sine rule in a frequency division mode according to the data module stored by the storage chip. As shown in fig. 2, the main control module is initialized, a system timer is used to count frequency division of the digital modulation wave, and waveform data with a certain duty ratio is generated according to the data module stored in the memory chip to obtain a corresponding digital modulation wave. The operating frequency of the main control chip can be 200MHz, a digital modulation wave with the duty ratio changing according to the sine rule and 5kHz is generated in a frequency division mode, and the amplitude range of the digital modulation wave is 0-3.3V.
And a low pass filter, which may be composed of a resistor and a capacitor, for converting the digital modulation wave into a sine wave. For example, the low pass filter can convert a digital modulation wave with an amplitude range of 0 to 3.3V into a sine wave with a frequency of 5kHz and an amplitude range of 0.4 to 2.9V.
The first-stage operational amplifier circuit comprises an operational amplifier chip and a corresponding configuration circuit, and is used for carrying out first-stage amplification on sine waves and amplifying the sine waves by two times, for example, the sine waves with the amplitude range of 0.4-2.9V can be amplified into the sine waves with the amplitude range of 0.8-5.8V.
The high-pass filter circuit can be composed of a resistor and a capacitor and is used for blocking sine waves, for example, sine waves with the amplitude range of 0.8-5.8V are changed into sine waves with the amplitude range of-2.5V- +2.5V after being blocked.
The second-stage operational amplifier circuit is used for carrying out second-stage amplification on the sine waves and mainly comprises an operational amplifier chip and a corresponding configuration circuit. The second-stage operational amplifier circuit can amplify the sine wave by four times, and for example, can amplify the sine wave with the amplitude range of-2.5V to +2.5V to the sine wave with the amplitude range of-10V to + 10V.
The inverting circuit is used for inverting the phase of the sine wave to generate a rotary change excitation signal and mainly comprises an operational amplifier chip and a corresponding configuration circuit. The rotation change excitation signal comprises a rotation change excitation signal high and a rotation change excitation signal low.
In an example, the system can also change the frequency of the spin excitation signal by adjusting the frequency division coefficient of the main control chip of the main control module, and can change the amplitude range of the spin excitation signal by changing the resistance of the configuration circuits of the first-stage operational amplification circuit and the second-stage operational amplification and inverting circuit, so that any spin requirement can be met.
The invention also provides a method for generating the rotary change excitation signal, which comprises the following steps: the method comprises the steps that a main control module is utilized to generate digital modulation waves changing according to a sine rule, the digital modulation waves are converted into sine waves through a low-pass filter, the sine waves are subjected to first-stage amplification twice through a first-stage operational amplification circuit and then subjected to blocking processing through a high-pass filter circuit, the sine waves are subjected to quadruple amplification through a second-stage operational amplification circuit and then subjected to phase inversion through an inverter circuit, and rotary transformer excitation signals meeting requirements are generated.
The system and the method for generating the rotary change excitation signal only need resistors, capacitors, operational amplifiers and other devices, and have the advantages of low cost, small size, light weight and easiness in implementation. The frequency of the excitation signal can be changed by adjusting the frequency division coefficient of the main control chip, and the amplitude range of the excitation signal can be changed by changing the configuration resistors of the first-stage amplifying circuit and the second-stage amplifying circuit, so that the method can meet the requirements of any rotary transformation, has strong applicability, can be successfully applied to the refrigeration infrared seeker, can reduce the cost of the seeker, and can reduce the volume and the weight of the seeker.
Although the embodiments of the present invention have been described above, the above descriptions are only for the convenience of understanding the present invention, and are not intended to limit the present invention. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (6)
1. A system for generating a spin-on excitation signal, the system comprising: the device comprises a main control module, a low-pass filter, a first-stage operational amplification circuit, a high-pass filter circuit, a second-stage operational amplification circuit and an inverting circuit, wherein the main control module is used for generating a digital modulation wave changing according to a sine rule, the low-pass filter circuit is used for converting the digital modulation wave into a sine wave, the first-stage operational amplification circuit is used for carrying out first-stage amplification on the sine wave, the high-pass filter circuit is used for carrying out blocking processing on the sine wave, the second-stage operational amplification circuit is used for carrying out second-stage amplification on the sine wave, and the inverting circuit is used for inverting the sine wave and generating a rotary-change excitation signal.
2. The generation system of claim 1, wherein the main control module comprises a memory chip and a main control chip, the memory chip stores a data module which changes according to a sine rule in one period, and the main control chip generates the digital modulation wave which changes according to the sine rule through a frequency division mode according to the data module.
3. The generation system of claim 1, wherein the spin excitation signal comprises a spin excitation signal high and a spin excitation signal low.
4. The generation system of claim 2, wherein the master control chip is further configured to change the frequency of the spin excitation signal by adjusting a frequency division factor.
5. The generation system according to claim 1, wherein the amplitude of the spin excitation signal is changed by adjusting the resistance of the configuration circuit of the first-stage operational amplification circuit and the second-stage operational amplification circuit.
6. A method for generating a spin-on excitation signal, the method comprising:
the method comprises the steps that a main control module is utilized to generate digital modulation waves changing according to a sine rule, the digital modulation waves are converted into sine waves through a low-pass filter, the sine waves are subjected to first-stage amplification twice through a first-stage operational amplification circuit and then subjected to blocking processing through a high-pass filter circuit, the sine waves are subjected to quadruple amplification through a second-stage operational amplification circuit and then subjected to phase inversion through an inverter circuit, and rotary transformer excitation signals meeting requirements are generated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111029139.5A CN113900475A (en) | 2021-09-01 | 2021-09-01 | System and method for generating rotary transformer excitation signal |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111029139.5A CN113900475A (en) | 2021-09-01 | 2021-09-01 | System and method for generating rotary transformer excitation signal |
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| Publication Number | Publication Date |
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| CN113900475A true CN113900475A (en) | 2022-01-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111029139.5A Pending CN113900475A (en) | 2021-09-01 | 2021-09-01 | System and method for generating rotary transformer excitation signal |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105572606A (en) * | 2016-01-26 | 2016-05-11 | 上海交通大学 | FPGA-based flux gate micro signal detecting system and FPGA-based flux gate micro signal detecting method |
| CN107547069A (en) * | 2017-09-18 | 2018-01-05 | 苏州博牛电气有限公司 | One kind rotation becomes excited signal and system and method for generation occurs |
| CN209448718U (en) * | 2018-11-13 | 2019-09-27 | 河北汉光重工有限责任公司 | A kind of rotation becomes excitation and cosine and sine signal processing unit |
-
2021
- 2021-09-01 CN CN202111029139.5A patent/CN113900475A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105572606A (en) * | 2016-01-26 | 2016-05-11 | 上海交通大学 | FPGA-based flux gate micro signal detecting system and FPGA-based flux gate micro signal detecting method |
| CN107547069A (en) * | 2017-09-18 | 2018-01-05 | 苏州博牛电气有限公司 | One kind rotation becomes excited signal and system and method for generation occurs |
| CN209448718U (en) * | 2018-11-13 | 2019-09-27 | 河北汉光重工有限责任公司 | A kind of rotation becomes excitation and cosine and sine signal processing unit |
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