提出一种适用于DC/DC变换器的输出电压微分–单周控制(output voltage differential coefficient and one cycle control,OVDC-OCC)方法。介绍其工作原理,并利用状态空间平均方法建立了这种新型反馈控制Buck变换器的小信号模型,在此基...提出一种适用于DC/DC变换器的输出电压微分–单周控制(output voltage differential coefficient and one cycle control,OVDC-OCC)方法。介绍其工作原理,并利用状态空间平均方法建立了这种新型反馈控制Buck变换器的小信号模型,在此基础上进行频域仿真,并对结果进行了对比分析,最后进行了实验研究,给出相关实验结果。仿真和实验结果表明,OVDC-OCC控制比传统电压控制Buck变换器具有更好的抗输入电压扰动能力和更好的动态负载性能。展开更多
The bias stability of differential interferometric fiber optical gyroscope is analyzed.Thermal error causing long-term bias drift are reduced by putting the 90°splice in the middle of the fiber coil and applying ...The bias stability of differential interferometric fiber optical gyroscope is analyzed.Thermal error causing long-term bias drift are reduced by putting the 90°splice in the middle of the fiber coil and applying a wide spectrum light source.Also,a kind of novel optical differential processing,which is much more precise than the electronic differential processing,is proposed for reducing the residual nonreciprocal error in the final differential output.An experimental setup based on optical differential processing was built.An^100 fold reduction in the long-term bias drift is demonstrated experimentally compared with the primary differential interferometric fiber optical gyroscope.展开更多
This paper provides a first indication that this is true for a system comprised of a static structure described by hyperbolic partial differential equations and is subjected to an external random input force. The syst...This paper provides a first indication that this is true for a system comprised of a static structure described by hyperbolic partial differential equations and is subjected to an external random input force. The system deforms the randomness of an input force sequence in proportion to its algorithmic complexity. The authors demonstrate this by numerical analysis of a one-dimensional vibrating elastic solid （the system） on which we apply a maximally-random force sequence （input）. The level of complexity of the system is controlled via external parameters. The output response is the field of displacements observed at several positions on the body. The algorithmic complexity and stochasticity of the resulting output displacement sequence is measured and compared against the complexity of the system. The results show that the higher the system complexity, the more random-deficient the output sequence.展开更多
文摘提出一种适用于DC/DC变换器的输出电压微分–单周控制(output voltage differential coefficient and one cycle control,OVDC-OCC)方法。介绍其工作原理,并利用状态空间平均方法建立了这种新型反馈控制Buck变换器的小信号模型,在此基础上进行频域仿真,并对结果进行了对比分析,最后进行了实验研究,给出相关实验结果。仿真和实验结果表明,OVDC-OCC控制比传统电压控制Buck变换器具有更好的抗输入电压扰动能力和更好的动态负载性能。
基金supported by the National Natural Science Foundation of China(Grant No.61205077)
文摘The bias stability of differential interferometric fiber optical gyroscope is analyzed.Thermal error causing long-term bias drift are reduced by putting the 90°splice in the middle of the fiber coil and applying a wide spectrum light source.Also,a kind of novel optical differential processing,which is much more precise than the electronic differential processing,is proposed for reducing the residual nonreciprocal error in the final differential output.An experimental setup based on optical differential processing was built.An^100 fold reduction in the long-term bias drift is demonstrated experimentally compared with the primary differential interferometric fiber optical gyroscope.
文摘This paper provides a first indication that this is true for a system comprised of a static structure described by hyperbolic partial differential equations and is subjected to an external random input force. The system deforms the randomness of an input force sequence in proportion to its algorithmic complexity. The authors demonstrate this by numerical analysis of a one-dimensional vibrating elastic solid （the system） on which we apply a maximally-random force sequence （input）. The level of complexity of the system is controlled via external parameters. The output response is the field of displacements observed at several positions on the body. The algorithmic complexity and stochasticity of the resulting output displacement sequence is measured and compared against the complexity of the system. The results show that the higher the system complexity, the more random-deficient the output sequence.
