کنفرانس مهندسی برق ایران

صفحه اصلی / سی و یکمین کنفرانس بین المللی مهندسی برق

Sampled-data-based Descriptor Observer Design with Aperiodic Measurements for Lithium-ion Batteries in Hybrid Electric Vehicles

نویسندگان :

Hamid Reza Ahmadzadeh¹ Masoud Shafiee²

1- دانشگاه صنعتی امیرکبیر 2- دانشگاه صنعتی امیرکبیر

کلمات کلیدی :

descriptor observer،Sampled-data systems،lithium-ion battery،state-of-charge،time-delay model،linear matrix inequalities

چکیده :

The state-of-charge information of lithium-ion batteries plays an important role in the performance of hybrid electric vehicles. Moreover, with the development of digital technologies, systems are implemented on digital platforms. In this paper, we address to sampled-data descriptor observer designing to state estimation for lithium-ion battery in hybrid electric vehicles used to estimate its state-of-charge. To this end, first a descriptor time-delay model with time-varying delay is provided for the dynamics of error estimation. Then based on this model, theory of descriptor systems and Lyapunov-Krasovskii function, sufficient conditions are extracted to guarantee the exponential stability of error dynamics. At the same time, the matrix of observer is designed in terms of linear matrix inequalities (LMIs) solvable by MATLAB software. Finally, the efficiency of proposed observer is illustrated by computer simulation.