Search Results for author: Qiugang Lu

Found 9 papers, 2 papers with code

Fast Charging of Lithium-Ion Batteries Using Deep Bayesian Optimization with Recurrent Neural Network

no code implementations9 Apr 2023 Benben Jiang, Yixing Wang, Zhenghua Ma, Qiugang Lu

Fast charging has attracted increasing attention from the battery community for electrical vehicles (EVs) to alleviate range anxiety and reduce charging time for EVs.

Bayesian Optimization

A Novel Entropy-Maximizing TD3-based Reinforcement Learning for Automatic PID Tuning

no code implementations5 Oct 2022 Myisha A. Chowdhury, Qiugang Lu

Our proposed method is applied to the PID tuning of a second-order system to verify its effectiveness in improving the sample efficiency and discovering the optimal PID parameters compared to traditional TD3.

reinforcement-learning Reinforcement Learning (RL)

Enhanced CNN with Global Features for Fault Diagnosis of Complex Chemical Processes

no code implementations4 Oct 2022 Qiugang Lu, Saif S. S. Al-Wahaibi

The advantage of this method is that both local and global patterns in images can be captured by a simple model architecture instead of establishing deep CNN models.

Dimensionality Reduction

Improving Convolutional Neural Networks for Fault Diagnosis by Assimilating Global Features

no code implementations3 Oct 2022 Saif S. S. Al-Wahaibi, Qiugang Lu

This paper proposes a novel local-global CNN (LG-CNN) architecture that directly accounts for both local and global features for fault diagnosis.

Time Series Analysis

Deep Learning-based Predictive Control of Battery Management for Frequency Regulation

1 code implementation4 Jan 2022 Yun Li, Yixiu Wang, Yifu Chen, Kaixun Hua, Jiayang Ren, Ghazaleh Mozafari, Qiugang Lu, Yankai Cao

The design procedure of the proposed scheme consists of two sequential processes: (1) the SL process, in which we first run a simulation with an MPC embedding a low-fidelity battery model to generate a training data set, and then, based on the generated data set, we optimize a DNN-approximated policy using SL algorithms; and (2) the RL process, in which we utilize RL algorithms to improve the performance of the DNN-approximated policy by balancing short-term economic incentives and long-term battery degradation.

Management Model Predictive Control +1

Stability-Preserving Automatic Tuning of PID Control with Reinforcement Learning

no code implementations30 Dec 2021 Ayub I. Lakhani, Myisha A. Chowdhury, Qiugang Lu

Different from existing studies on using RL for PID tuning, in this work, we consider the closed-loop stability throughout the RL-based tuning process.

reinforcement-learning Reinforcement Learning (RL)

MPC Controller Tuning using Bayesian Optimization Techniques

no code implementations29 Sep 2020 Qiugang Lu, Ranjeet Kumar, Victor M. Zavala

The approach is motivated by the observation that evaluating the closed-loop performance of MPC by trial-and-error is time-consuming (e. g., every closed-loop simulation can involve solving thousands of optimization problems).

Bayesian Optimization

Image-Based Model Predictive Control via Dynamic Mode Decomposition

no code implementations11 Jun 2020 Qiugang Lu, Victor M. Zavala

We show that the dynamics of this high-dimensional space can be accurately predicted by using a 40-dimensional DMD model and we show that the field can be manipulated satisfactorily by using an MPC controller that embeds the low-dimensional DMD model.

Model Predictive Control

Unifying Theorems for Subspace Identification and Dynamic Mode Decomposition

1 code implementation16 Mar 2020 Sungho Shin, Qiugang Lu, Victor M. Zavala

This paper presents unifying results for subspace identification (SID) and dynamic mode decomposition (DMD) for autonomous dynamical systems.

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