Search Results for author: Lijun Zhu

Found 8 papers, 1 papers with code

An Improved Active Disturbance Rejection Control for Bode's Ideal Transfer Function

no code implementations9 Jan 2022 Bolin Li, Lijun Zhu

This paper presents an active disturbance rejection control (ADRC) scheme with an improved fractional-order extended state observer (IFO-ESO). Based on the new ADRC scheme, the open-loop transfer function of a high-order system can be approximately rendered to a so-called Weighed Bode's ideal transfer function, whose closed-loop performance is less prone to the controller parameter variations.

An Improved Fractional-Order Active Disturbance Rejection Control: Performance Analysis and Experiment Verification

no code implementations10 Dec 2021 Bolin Li, Lijun Zhu

This paper presents an improved active disturbance rejection control scheme (IFO-ADRC) with an improved fractional-order extended state observer (IFO-ESO).

A new active disturbance controller based on an improved fraction-order extended state observer

no code implementations6 Dec 2021 Bolin Li, Lijun Zhu

The frequency-domain analysis shows that the IFADRC has a stronger disturbance estimation performance for the fraction-order system than an integer-order active disturbance rejection controller (IADRC).

BCNN: A Binary CNN with All Matrix Ops Quantized to 1 Bit Precision

no code implementations1 Oct 2020 Arthur J. Redfern, Lijun Zhu, Molly K. Newquist

This paper describes a CNN where all CNN style 2D convolution operations that lower to matrix matrix multiplication are fully binary.

Deep learning for seismic phase detection and picking in the aftershock zone of 2008 Mw7.9 Wenchuan earthquake

no code implementations18 Jan 2019 Lijun Zhu, Zhigang Peng, James McClellan, Chenyu Li, Dongdong Yao, Zefeng Li, Lihua Fang

In this paper, we present a CNN-based Phase- Identification Classifier (CPIC) designed for phase detection and picking on small to medium sized training datasets.

Event-triggered controllers based on the supremum norm of sampling-induced error

no code implementations14 Jun 2018 Lijun Zhu, Zhiyong Chen, David J. Hill, Shengli Du

Specifically, the closed-loop system is associated with a pair of auxiliary input and output.

Systems and Control

A multi-channel approach for automatic microseismic event association using RANSAC-based arrival time event clustering(RATEC)

1 code implementation7 Feb 2017 Lijun Zhu, Lindsay Chuang, James H. McClellan, Entao Liu, Zhigang Peng

In the presence of background noise, arrival times picked from a surface microseismic data set usually include a number of false picks that can lead to uncertainty in location estimation.

Clustering

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