Inductance-capacitance sine transform CO2 laser power supply
A technology of sinusoidal transformation and inductance and capacitance, which is applied in the direction of lasers, laser components, circuits, etc., can solve the problems of unstable output, damage, and easy damage of power supply, and achieve fast response, good stability, and high control precision.
Inactive Publication Date: 2010-06-16
NO 709 RES INST OF CHINA SHIPBUILDING IND CORP
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Problems solved by technology
[0002] At present, China's laser industry is developing rapidly, and lasers are widely used in various fields such as welding, cutting, marking, scribing, and film engraving; however, the development of laser power supplies has become an important bottleneck restricting the development of the laser industry, and the work reliability is not high enough. Insufficient output stability is a common problem with common laser power supplies on the market
The main reason is that the main circuit topology and CO 2 The load characteristics of the laser tube are not suitable, resulting in easy damage to the power supply and affecting the normal operation of the system
At the same time, due to the load CO 2 The laser tube is prone to abnormal problems such as air leakage and damage, and it is also easy to cause damage to the power supply
In addition, its products are basically controlled by analog circuits, and its control accuracy and response speed are difficult to meet the high-precision requirements of the system.
Method used
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[0024] according to Figure 1-6 As shown, an inductor-capacitor sinusoidal transformation CO 2 The laser power supply includes: a drive circuit, a laser output control circuit, a current sampling circuit, and a DSP controller that digitally processes current feedback signals using an inductance-capacitance sine conversion circuit in the main circuit unit.
[0025] The main circuit unit includes: rectification and filtering circuit, half-bridge inverter circuit, inductance-capacitance sinusoidal conversion circuit and high-voltage conversion circuit.
[0026] The inductance-capacitance sine conversion circuit is composed of an inductor (L3), a capacitor (C10), and a high-voltage package (T2); the two taps on the primary side of the high-voltage package (T2) are respectively connected to the two pins of the capacitor (C10), and the high-voltage package ( T2) The first tap of the primary side is connected to the second tap of the inductor (L3) at the same time.
[0027] DSP con...
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The invention relates to an inductance-capacitance sine transform CO2 laser power supply which comprises a drive circuit, a laser output control circuit, a current sampling circuit, a main circuit and a DSP (Digital Signal Processor) controller circuit. The main circuit unit adopts an inductance-capacitance sine transform circuit, and a DSP controller which is used for digitally processing current feedback signals. The invention has the advantages that the inductance-capacitance sine transform circuit enables the output end to obtain the current which is proportional to the voltage at the input end and is irrelative with the load impedance change, can well satisfy the load characteristics of CO2 laser tubes, and provides matched energy supply to the normal work of the laser tubes; by using the DSP controller to monitor the load current, the user can find whether the CO2 laser tube is abnormal or not in time, thus preventing the damage to the laser power supply caused by abnormality; the full digital control guarantees the high control precision, high response speed and good stability of the power supply.
Description
technical field [0001] The invention relates to a control chip with DSP as the core, and utilizes the sinusoidal transformation of inductance and capacitance to generate 2 The technical field of excitation power supply for laser tube load characteristics, specifically an inductance-capacitance sinusoidal conversion CO 2 Laser power. Background technique [0002] At present, China's laser industry is developing rapidly, and lasers are widely used in various fields such as welding, cutting, marking, scribing, and film engraving; however, the development of laser power supplies has become an important bottleneck restricting the development of the laser industry, and the work reliability is not high enough. Insufficient output stability is a common problem with common laser power supplies on the market today. The main reason is that the main circuit topology and CO 2 The load characteristics of the laser tube are not suitable, resulting in easy damage to the power supply and ...
Claims
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Login to View More IPC IPC(8): H01S3/223H01S3/09
Inventor 李勇曹敏王震肖刚
Owner NO 709 RES INST OF CHINA SHIPBUILDING IND CORP