摘要
为了在充电或放电电流带有非线性不确定性的情况下准确估计电池的电荷状态,提出一种基于自适应非线性阻尼的电荷观测器。该观测器引进一个自适应参数,可同时估计电池电荷状态和电流中的不确定性,能很好地抑制如电压波动、执行器故障和传感器测量噪声等带来的不确定性电流对电池电荷估计的影响。理论证明,该观测器能确保电池电荷估计误差有界,并且选择适当的设计参数可使电荷估计误差能收敛到任意小。仿真结果表明了该方法的有效性。
In order to estimate the charge of battery exactly when the charging or discharging current with nonlinear uncertainty,an adaptive nonlinear damping based observer was proposed. With an adaptive parameter,the observer estimates the state of charge and the uncertainty in the current simultaneously. The proposed observer can well dominate the effects of the uncertainty caused by the voltage fluctuations,actuator failure or sensor measurement noise,etc on the estimation of charge. It was proved that the estimation errors are uniformly bounded. Furthermore,with well designed parameter,the estimation errors can reach arbitrarily small values. Simulation results illustrated the effectiveness of the proposed robust daptive battery charge observer.
出处
《四川大学学报（工程科学版）》
EI
CAS
CSCD
北大核心
2015年第3期144-149,共6页
Journal of Sichuan University (Engineering Science Edition)
关键词
电荷状态
观测器
充放电不确定性
自适应
state of charge
observer
charging and discharging uncertainties
adaptation
