一种低噪声开关电源在光纤陀螺系统中的应用
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摘要
在高精度光纤陀螺系统中,开关电源中的spike毛刺噪声会串扰光纤陀螺的信号处理电路,造成系统采样误差。本文分析了开关电源spike噪声的成因及其对光纤陀螺性能的影响机理,并在此基础上提出摆率控制是一种适用于光纤陀螺系统电源的低噪声电源技术。利用摆率控制技术,一种低噪声特性的开关电源模块被开发出来,并应用于光纤陀螺系统。该开关电源模块由DC-DC电路和LDO电路两部分组成,并在DC-DC电路中通过摆率控制电路实现其低噪声性能。完成后的低噪声电源模块能够在200 MHz的测试带宽下实现1 mV量级的峰峰值噪声水平。经过对比测试,采用低噪声电源的两支被测光纤陀螺分别表现出了3.1%和4.4%的噪声优化特性。
In high-precision fiber-optic gyroscope(FOG) system,the spike noise of DC-DC power source can lead to a considerable disturbance to the signal processing circuit of FOG,which results in a sampling error.In this work,the cause of spike noise and the influence mechanism were clarified.The slew rate control technology was researched and proved to be an effective solution to prevent spike noise of FOG power source.Using slew rate control technology,a kind of low-noise power module has been developed and applied successfully in the FOG system.This power module consists of DC-DC circuit and LDO circuit,and slew rate control circuit was used in the DC-DC circuit to realize low-noise performance.The peak-to-peak noise value of the developed power module was tested to be about 1 mV in a bandwidth of 200 MHz.Two typical FOG systems were tested with the use of this lownoise power source,and their output noise improvement were 3.1% and 4.4%.
In high-precision fiber-optic gyroscope(FOG) system,the spike noise of DC-DC power source can lead to a considerable disturbance to the signal processing circuit of FOG,which results in a sampling error.In this work,the cause of spike noise and the influence mechanism were clarified.The slew rate control technology was researched and proved to be an effective solution to prevent spike noise of FOG power source.Using slew rate control technology,a kind of low-noise power module has been developed and applied successfully in the FOG system.This power module consists of DC-DC circuit and LDO circuit,and slew rate control circuit was used in the DC-DC circuit to realize low-noise performance.The peak-to-peak noise value of the developed power module was tested to be about 1 mV in a bandwidth of 200 MHz.Two typical FOG systems were tested with the use of this lownoise power source,and their output noise improvement were 3.1% and 4.4%.
引文
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[18]Lee S S,Saad A,Lee L,et al.On-chip slew-rate control for low-voltage differential signalling(LVDS)driver[C]//Proceedings of 2014 International Symposium on Intelligent Signal Processing and Communication Systems,Kuching,Malaysia,2014:99–101.
[19]Pelley P H.Voltage boosting system with slew rate control and method thereof:US8120412[P].2012-02-21.
[20]Kannan K.Adaptive slew rate control for switching power devices:US9614517B2[P].2017-04-04.
[21]Fan X,Dhanasekaran V.Slew rate control boost circuits and methods:US9467098[P].2016-10-11.
[22]Wu X Y,Wang X Y.Interface circuit and achievement method for limiting output port voltage slew rate:CN103066988B[P].2015-07-01.吴晓勇,王新亚.一种限制输出端电压摆率的接口电路及其实现方法:CN103066988B[P].2015-07-01.
[2]Lefevre H C.The fiber-optic gyroscope:challenges to become the ultimate rotation-sensing technology[J].Optical Fiber Technology,2013,19(6):828–832.
[3]Hao C.Applied research of transmission line theory in electromagnetic shielding of fog north seeker[D].Beijing:Beijing Jiaotong University,2014:1–13.郝翠.传输线理论在光纤陀螺寻北仪电磁屏蔽中的应用研究[D].北京:北京交通大学,2014:1–13.
[4]Mi Y X,Lin H.Application of fiber optic gyro in the stabilized platform servo system[J].Application of Electronic Technique,2012,38(9):58–60.米月星,林辉.光纤陀螺在稳定平台伺服系统中的应用[J].电子技术应用,2012,38(9):58–60.
[5]Keith G W,Mead D,Smith D E,et al.System to reduce gyroscopic errors with limited power supply quality in a fiber optic gyroscope:US8542364B1[P].2013-09-24.
[6]Keith G W,Schwerman P.System to reduce gyroscopic errors with limited power supply quality in a fiber optic gyroscope:US-8077321B1[P].2011-12-13.
[7]Zhang J P,Zhang C X,Song N F.Influence of the noise of switch mode power supply on the precision of FOG[J].Journal of Chinese Inertial Technology,2003,11(1):45–48.张敬佩,张春熹,宋凝芳.开关电源噪声对光纤陀螺精度影响的研究[J].中国惯性技术学报,2003,11(1):45–48.
[8]Tao C B.Fog noise analysis and suppression technology research[D].Harbin Engineering University,2014:30–54.陶晨斌.光纤陀螺噪声分析及抑制技术研究[D].哈尔滨:哈尔滨工程大学,2014:30–54.
[9]Gu Z Q.Applications of harmonic compensation technologies in radar power supply system[J].Modern Radar,2013,35(4):81–85.古志强.谐波补偿技术在雷达电源系统中的应用[J].现代雷达,2013,35(4):81-85.
[10]Fu G J,Wang C,Zhang L,et al.Design and implementation for new multi-level switching-less active filter[J].Proceedings of the CSU-EPSA,2017,29(5):60–66.付光杰,王超,张雷,等.新型少开关多电平有源滤波器设计与实现[J].电力系统及其自动化学报,2017,29(5):60–66.
[11]Khadem S K,Basu M,Conlon M F.Harmonic power compensation capacity of shunt active power filter and its relationship with design parameters[J].IET Power Electronics,2014,7(2):418–430.
[12]Acuna P,Moran L,Rivera M,et al.Improved active power filter performance for renewable power generation systems[J].IEEE Transactions on Power Electronics,2014,29(2):687–694.
[13]Yuan F F.Research and design of ZCS-PWM flyback switch power supply based on soft switch technology[J].Information Technology and Informatization,2017(4):131–134.袁方方.基于软开关技术的ZCS-PWM反激式开关电源的研究与设计[J].信息技术与信息化,2017(4):131–134.
[14]Wu F.Analysis and design of phase-shift full bridge ZVS DC-DC regulated power supply[J].Telecom Power Technology,2015,32(4):92–95,105.吴帆.移相全桥ZVS软开关DC-DC稳压电源的设计与分析[J].通信电源技术,2015,32(4):92–95,105.
[15]Blank M,Gluck T,Kugi A,et al.Digital slew rate and s-shape control for smart power switches to reduce EMI generation[J].IEEE Transactions on Power Electronics,2015,30(9):5170–5180.
[16]Li R J.Study on inhibition of DC/DC EMI converter based on FPGA[J].Popular Science&Technology,2013,15(10):72–74.李瑞娟.基于FPGA的DC/DC变换器EMI抑制研究[J].大众科技,2013,15(10):72–74.
[17]Cao C C,Zeng Y,Zhao J Z,et al.A kind of MLVDS driver with transition-time controlled in certain range[J].Computer Engineering and Applications,2016,52(2):45–49.曹成成,曾云,赵建中,等.一种转换时间可范围控制的MLVDS驱动器[J].计算机工程与应用,2016,52(2):45–49.
[18]Lee S S,Saad A,Lee L,et al.On-chip slew-rate control for low-voltage differential signalling(LVDS)driver[C]//Proceedings of 2014 International Symposium on Intelligent Signal Processing and Communication Systems,Kuching,Malaysia,2014:99–101.
[19]Pelley P H.Voltage boosting system with slew rate control and method thereof:US8120412[P].2012-02-21.
[20]Kannan K.Adaptive slew rate control for switching power devices:US9614517B2[P].2017-04-04.
[21]Fan X,Dhanasekaran V.Slew rate control boost circuits and methods:US9467098[P].2016-10-11.
[22]Wu X Y,Wang X Y.Interface circuit and achievement method for limiting output port voltage slew rate:CN103066988B[P].2015-07-01.吴晓勇,王新亚.一种限制输出端电压摆率的接口电路及其实现方法:CN103066988B[P].2015-07-01.