CN208672269U - A kind of switching power amplifier system for electric vibration table - Google Patents
A kind of switching power amplifier system for electric vibration table Download PDFInfo
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- CN208672269U CN208672269U CN201821467652.6U CN201821467652U CN208672269U CN 208672269 U CN208672269 U CN 208672269U CN 201821467652 U CN201821467652 U CN 201821467652U CN 208672269 U CN208672269 U CN 208672269U
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Abstract
The utility model relates to a kind of switching power amplifier systems for electric vibration table, it is made of main circuit and feed circuit two parts, main circuit is by DC power supply circuit, power output circuit and output filter circuit composition, DC power supply circuit input terminal is connect with power grid, DC voltage is converted by the alternating voltage obtained from the power grid, the output end of DC power supply circuit is connect with power output circuit, power output circuit includes the full-bridge inverter being made of full-controlled device insulated gate bipolar transistor, power output circuit output end is connect with the output filter circuit, the output filter circuit is connect with shake table；Feed circuit includes control circuit and display communication device, and control circuit is connect with power output circuit and output filter circuit respectively, which solves the problems, such as conventional power amplifier, and energy consumption is high, power is low.
Description
Technical field
The utility model relates to power amplifier field, especially a kind of switch power amplifier for electric vibration table
System.
Background technique
It is external that the purpose of vibration test is that the determining designed machine manufactured, component are born in transport and use process
Vibration or the vibration itself generated and unlikely destruction, and the reliability for playing its performance, reaching predetermined age.With to production
Product, the especially raising of Aerospace Products reliability requirement, vibration experiment as reliability test key equipment
Development becomes more and more important.Power amplifier is the important component of electric vibration experiment, performance and with vibration
The matching state of platform is directly related to the performance of system.Traditional power amplifier is due to the power consumption on output circuit, work
It is very low to make efficiency, it is difficult to meet electric vibration table to amplifier low consumption, requirement efficient, small in size.
Utility model content
The technical problem to be solved by the utility model is to provide a kind of switch power amplifiers for electric vibration table
System, switch power amplifier control the harmonic components in transistor output voltage or electric current using output filter,
The voltage and current waveform of consolidation transistor output.Switch power amplifier in the utility model solves conventional power amplification
The problem that energy consumption is high for device, power is low.
The utility model provides one kind, and low energy consumption, the high-power switching power amplifier system for electric vibration table,
It is made of main circuit and feed circuit two parts, the main circuit is filtered by DC power supply circuit, power output circuit and output
Circuit composition, the DC power supply circuit input terminal connect with power grid, convert the alternating voltage obtained from the power grid to directly
Galvanic electricity pressure, the output end of the DC power supply circuit are connect with the power output circuit, the power output circuit include by
The full-bridge inverter that full-controlled device insulated gate bipolar transistor is constituted, the power output circuit output end and the output are filtered
Wave circuit connection, the output filter circuit are connect with shake table；The feed circuit includes control circuit and display communication dress
It sets, the control circuit is connect with the power output circuit and the output filter circuit respectively, to output filter circuit
Output signal is analyzed, and controls power output circuit according to analysis information, while analysis result is passed to display communication
Device；The electric vibration table 3 includes driving coil, moving component, excitation and demagnetization unit, stage body, support device and use
In the water cooling plant of cooling shake table.
The working principle of the switching power amplifier system of the electric vibration table: DC power supply circuit is by the exchange in power grid
Electricity is transformed into direct current and passes to power output circuit, and DC voltage is reverse by power output circuit by full-bridge inverter
Pwm pulse alternating current, output filter circuit demodulate the pwm pulse waveform that the power output circuit exports, and filter out height
The driving coil being transmitted on electric vibration table after frequency carrier signal pushes electric vibrating using the high current and high voltage of generation
Vibrational waveform required for platform generates.Control circuit receives feedback signal and control input signal from filter circuit, through controlling
Output signal after mechanism processed decides the on-off of power output circuit switching power tube.Display communicating circuit then provides good
Good human-computer interaction interface, with convenient for users to manipulating, safeguard power amplifier.
Detailed description of the invention
Fig. 1 is the schematic illustration of the switching power amplifier system described in the utility model for electric vibration table.
Specific embodiment
As shown in Figure 1, a kind of switching power amplifier system for electric vibration table, by main circuit and feed circuit two
Part forms, and the main circuit is made of DC power supply circuit 1, power output circuit 2 and output filter circuit 3, the direct current
1 input terminal of power circuit is connect with power grid, converts DC voltage, the direct current for the alternating voltage obtained from the power grid
The output end of source circuit is connect with the power output circuit, and the power output circuit includes by full-controlled device insulated gate bipolar
The full-bridge inverter that transistor npn npn is constituted, the power output circuit output end is connect with the output filter circuit, described defeated
Filter circuit is connect with shake table 4 out；The feed circuit includes control circuit 5 and display communication device 6, the control circuit
5 connect with the power output circuit 2 and the output filter circuit 3 respectively, carry out to the output signal of output filter circuit
Analysis, and power output circuit is controlled according to analysis information, while analysis result is passed into display communication device 6;The electricity
Dynamic shake table 3 includes driving coil, moving component, excitation and demagnetization unit, stage body, support device and for cooling down shake table
Water cooling plant.
The working principle of the switching power amplifier system of the electric vibration table: DC power supply circuit is by the exchange in power grid
Electricity is transformed into direct current and passes to power output circuit, and DC voltage is reverse by power output circuit by full-bridge inverter
Pwm pulse alternating current, output filter circuit demodulate the pwm pulse waveform that the power output circuit exports, and filter out height
The driving coil being transmitted on electric vibration table after frequency carrier signal pushes electric vibrating using the high current and high voltage of generation
Vibrational waveform required for platform generates.Control circuit receives feedback signal and control input signal from filter circuit, through controlling
Output signal after mechanism processed decides the on-off of power output circuit switching power tube.Display communicating circuit then provides good
Good human-computer interaction interface, with convenient for users to manipulating, safeguard power amplifier.
The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this
For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model
Within, any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.
Claims (1)
1. a kind of switching power amplifier system for electric vibration table, which is characterized in that by main circuit and feed circuit two
Part forms, and the main circuit is made of DC power supply circuit, power output circuit and output filter circuit, the DC power supply
Circuit input end is connect with power grid, converts DC voltage, the DC power supply electricity for the alternating voltage obtained from the power grid
The output end on road is connect with the power output circuit, and the power output circuit includes brilliant by full-controlled device insulated gate bipolar
The full-bridge inverter that body pipe is constituted, the power output circuit output end are connect with the output filter circuit, the output filter
Wave circuit is connect with shake table；The feed circuit include control circuit and display communication device, the control circuit respectively with
The power output circuit is connected with the output filter circuit, is analyzed the output signal of output filter circuit, and root
Power output circuit is controlled according to analysis information, while analysis result is passed into display communication device;The electric vibration table 3
Including driving coil, moving component, excitation and demagnetization unit, stage body, support device and for cooling down shake table water cooling dress
It sets.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821467652.6U CN208672269U (en) | 2018-09-09 | 2018-09-09 | A kind of switching power amplifier system for electric vibration table |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821467652.6U CN208672269U (en) | 2018-09-09 | 2018-09-09 | A kind of switching power amplifier system for electric vibration table |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208672269U true CN208672269U (en) | 2019-03-29 |
Family
ID=65842445
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821467652.6U Expired - Fee Related CN208672269U (en) | 2018-09-09 | 2018-09-09 | A kind of switching power amplifier system for electric vibration table |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208672269U (en) |
-
2018
- 2018-09-09 CN CN201821467652.6U patent/CN208672269U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190329 Termination date: 20210909 |