摘要
大功率TEA CO2激光器系统产生的强电磁干扰主要来源于激光器主放电回路、脉冲火花开关和电源。这种强电磁干扰使大功率TEA CO2激光器控制子系统出现数据混乱、显示屏帧频滚动及功率模块损坏等电磁兼容问题。对大功率TEA CO2激光器系统中产生强电磁干扰的部位和干扰途径进行了测试及分析。通过调整放电回路的参数降低电磁干扰强度,采用埋入式同轴高压电连接器专利技术对主放电回路进行屏蔽,控制子系统选用PLC为控制核心及屏蔽滤波,软件中输入及输出程序的抗干扰设计等措施,有效地抑制了干扰电磁波在系统内外的传播,解决了大功率TEA CO2激光器系统电磁兼容问题。结果表明:主动降低电磁干扰强度和对电磁干扰源进行屏蔽,提高控制子系统硬件抑噪能力等措施,是抑制电磁干扰,保证激光器控制子系统硬件不受损坏的主要手段。软件抗干扰,是硬件抑制电磁干扰措施的补充和延伸,能使激光器系统具有很高的可靠性。
The strong electromagnetic interference generated in high power TEA CO2 laser system mainly comes from the main discharge circuit, pulse spark switch and power supply. Such strong electromagnetic interference causes some problems such as data confusion, display frame frequency rolling and damage of power module, etc. in the high power TEA CO2 laser control sub-system. The parts in the high power TEA CO2 laser system where the strong electromagnetic interference occurs and the interference means are tested and analyzed. Adjusting the parameters of the discharge circuit to reduce the electromagnetic interference strength, adopting the patent technology of the buried coaxial high-voltage electric connector to shield the main discharge return circuit, using the PLC as the control core and shielding filtering of the control sub-system, and anti-jamming design of the input and output procedures in the software, etc. , the spreading of the electromagnetic interference wave inside and outside the system is effectively suppressed. The results show that active reducing the electromagnetic interference strength, shielding the electromagnetic interference sources and improving the hardware noise suppression capability of the control subsystem can suppress the electromagnetic interference and avoid damage to the laser control subsystem. The software anti-jamming is the supplementation and extension of the measures of the hardware suppressing the electromagnetic interference, which can make the laser system have the high reliability.
出处
《强激光与粒子束》
EI
CAS
CSCD
北大核心
2008年第2期177-182,共6页
High Power Laser and Particle Beams
关键词
TEA
CO2激光器
电磁兼容
同轴高压电连接器
电磁干扰
TEA CO2 laser
Electromagnetic compatibility
Coaxial high-voltage electric connector
Electromagnetic interference
