1.3500 ton extruder system industrial process automatic control and computer measurement and control system technical transformation: graphite electrode batching computer automatic control system: computer monitoring network: development and perfection of modern tap water automatic control system. 2. Power electronic technology and equipment. Research on high-reliability starting method of high-power thyristor intermediate frequency power supply: new induction heating intermediate frequency electric furnace and PWM soft switching control technology: research on key technology of ozone generator: microcomputer-controlled thyristor intermediate frequency power supply. Representative work "Single peak law and threshold trial algorithm of threshold and signal-to-noise ratio in wavelet image denoising", Journal of Electronic Measurement and Instrument, Study on fundamental equivalent circuit and dynamic characteristics of DBD ozone generator powered by medium and low frequency sinusoidal voltage, No.4, 2006, Journal of Electrical Technology, No.7, 2004. "Research on load magnetization starting method of thyristor intermediate frequency power supply", Journal of Electrical Technology, 12, 2003. "Real-time measurement and control system of electrode length based on ultrasonic sensor", Journal of Hunan University, No.2, 2006 (included in EI). "A new phase-shifting PWM control method based on ARM and its application", Chemical Automation and Instrument, No.6, 2006. "Series Load Resonant DBD Ozone Generator Power Supply", High Voltage Technology,No. 10, 2006 (included in EI). Hardware design of water supply network telemetry system, microcomputer information ISSN 1008-0570,No. 12, 2006. "Design and implementation of control system for high-power oxygen generator", computer measurement and control, August 2006, parameter monitoring system of graphite electrode production process based on CAN bus, instrument technology, 2006 1 issue. "Additional oscillation starting method of thyristor intermediate frequency induction inverter power supply", Power Electronics Technology, No.6, 2003. "Research on load magnetization starting method of series-parallel resonant thyristor intermediate frequency power supply", Journal of Hunan University, No.4, 2003 (included in EI). "unified mathematical method for linear convolution calculation of finite-length signals", journal of Hunan university, 12, 2002. Ei has collected more than ten articles.