摘要
颗粒所处空间位置对静电传感器探极表面的感应电量有重要影响,采用单传感器结构难以准确测量颗粒所带电量。采用平面阵列式传感器求解颗粒所带电量及其空间位置,以解决单传感器结构存在已知量无法满足求解条件的问题。使用COMSOL Multiphysics建立阵列式静电传感器的高保真传感数值模型,结合静电传感器传感模型的理论和方法,通过实验验证所建模型对带电颗粒运动与静电感应过程的有效性。提出一种基于Tikhonov正则化方法的颗粒带电空间分布求解算法,实现单个颗粒所带电量及其空间位置的确定。经仿真与实验验证,颗粒反演带电量与实际带电量误差绝对值低于8%。所提方法可准确反演带电颗粒所带电量及其空间位置。
The spatial position of the charged particles has serious influence on the induced electricity that gathers on the probe surface of the electrostatic sensor.It is difficult to accurately measure the electrical charge of the charged particles by using a single sensor structure.In this study,the planar array sensors are used to solve the problem that a single sensor structure cannot determine the charge and its spatial position of the charged particles due to that the known information is insufficient to meet the solution conditions.COMSOL Multiphysics is used to formulate a high-fidelity sensing numerical model of array electrostatic sensors.The theory and methods of electrostatic sensor sensing models are combined.The effectiveness of the formulated model on the movement of charged particles and electrostatic induction is evaluated by experiments.An algorithm based on Tikhonov regularization is proposed to solve the charged space distribution of charged particles,which can determine the amount of charge and their spatial position.Simulation and experiments verify that the absolute value of the error between the inversed charge and the actual charge of charged particles is smaller than 8%.The proposed method can accurately invert the amount of charge and the spatial position of the abrasive particles.
作者
钟志荣
左洪福
郭家琛
姜衡
Zhong Zhirong;Zuo Hongfu;Guo Jiachen;Jiang Heng(College of Civil Aviation,Nanjing University of Aeronautics and Astronautics,Nanjing 211106,China)
出处
《仪器仪表学报》
EI
CAS
CSCD
北大核心
2020年第7期80-90,共11页
Chinese Journal of Scientific Instrument
基金
国家自然科学基金(U1933202)
国家自然科学基金(U1733201)项目资助
