针对锂电池的荷电状态(state of charge,SOC)估计过程中测量值存在粗大误差的问题,以Thevenin等效电路模型为基础,提出了一种粗大误差补偿粒子滤波(particle filter,PF)算法。该算法可以实时地检测锂电池测量数据中可能存在的粗大误差,...针对锂电池的荷电状态(state of charge,SOC)估计过程中测量值存在粗大误差的问题,以Thevenin等效电路模型为基础,提出了一种粗大误差补偿粒子滤波(particle filter,PF)算法。该算法可以实时地检测锂电池测量数据中可能存在的粗大误差,并对其进行分类与估计,通过补偿机制对异常测量值进行修正,提高算法的抗干扰能力。将该算法应用于锂电池SOC估计过程进行仿真验证,仿真结果表明,该算法具有较强的鲁棒性,在进行锂电池SOC估计时可以有效地抑制粗大误差的影响。展开更多
Quantum radar has recently gained increasing importance in a number of military applications.The estimation accuracy of one-shot quantum illumination events is significant in target detection.However,the accuracy is i...Quantum radar has recently gained increasing importance in a number of military applications.The estimation accuracy of one-shot quantum illumination events is significant in target detection.However,the accuracy is inevitably deteriorated by measurement noises.The traditional one-shot illumination emits a single photon towards a certain area which thermal noise exists in the path to,and the states of the received photons are hard to distinguish in the following processing.Therefore,a new optical probe source is proposed in this work.The independent detecting unit in the enhanced illumination is comprised of two photons aligned in time by using Hong–Ou–Mandel(HOM)interferometer.Further,oneshot detection in a general discrete model is realized and it proves a significant promotion in accuracy.The expansion of useful parts in parameter space and the lower minimal error probability for hypothesis testing have been mathematically demonstrated.The accuracy of one-shot detection can be effectively improved by the proposed scheme implying that it possesses great potential applications in quantum illumination and imaging.展开更多
文摘针对锂电池的荷电状态(state of charge,SOC)估计过程中测量值存在粗大误差的问题,以Thevenin等效电路模型为基础,提出了一种粗大误差补偿粒子滤波(particle filter,PF)算法。该算法可以实时地检测锂电池测量数据中可能存在的粗大误差,并对其进行分类与估计,通过补偿机制对异常测量值进行修正,提高算法的抗干扰能力。将该算法应用于锂电池SOC估计过程进行仿真验证,仿真结果表明,该算法具有较强的鲁棒性,在进行锂电池SOC估计时可以有效地抑制粗大误差的影响。
基金the National Natural Science Foundation of China(Grant No.62071363)the Key Research and Development Program of Shaanxi Province,China(Grant No.2021LLRH-06)。
文摘Quantum radar has recently gained increasing importance in a number of military applications.The estimation accuracy of one-shot quantum illumination events is significant in target detection.However,the accuracy is inevitably deteriorated by measurement noises.The traditional one-shot illumination emits a single photon towards a certain area which thermal noise exists in the path to,and the states of the received photons are hard to distinguish in the following processing.Therefore,a new optical probe source is proposed in this work.The independent detecting unit in the enhanced illumination is comprised of two photons aligned in time by using Hong–Ou–Mandel(HOM)interferometer.Further,oneshot detection in a general discrete model is realized and it proves a significant promotion in accuracy.The expansion of useful parts in parameter space and the lower minimal error probability for hypothesis testing have been mathematically demonstrated.The accuracy of one-shot detection can be effectively improved by the proposed scheme implying that it possesses great potential applications in quantum illumination and imaging.
