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4 results on '"Shaofang, Wu"'

1. A New Hybrid Model Predictive Controller Design for Adaptive Cruise of Autonomous Electric Vehicles

Author

Yuanhang Chen, Guodong Feng, Shaofang Wu, and Xiaojun Tan

Subjects
Transportation engineering, TA1001-1280, Transportation and communications, HE1-9990
Abstract

Autonomous driving is an appealing research topic for integrating advanced intelligent algorithms to transform automotive industries and human commuting. This paper focuses on a hybrid model predictive controller (MPC) design for an adaptive cruise. The driving modes are divided into following and cruising, and the MPC algorithm based on simplified dual neural network (SDNN) and proportional-integral-derivative (PID) based on single neuron (SN) are applied to the following mode and the cruising mode, respectively. SDNN is used to accelerate the solution of the quadratic programming (QP) problem of the proposed MPC algorithm to improve the computation efficiency, while PID based on SN performs well in the nonlinear and time-varying conditions in the ACC system. Moreover, lateral dynamics control is integrated into the designed system to fulfill cruise control in the curved road conditions. Furthermore, to improve the energy efficiency of the electric vehicle, an energy feedback strategy is proposed. The simulation results show that the proposed ACC system is effective on both straight roads and curved roads.

Published
2021
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3. A Robust Backstepping Sensorless Control for Interior Permanent Magnet Synchronous Motor Using a Super‐Twisting Based Torque Observer

Author

Shaofang Wu, Jianwu Zhang, and Benben Chai

Subjects
0209 industrial biotechnology, 020901 industrial engineering & automation, Mathematics (miscellaneous), Permanent magnet synchronous motor, Control and Systems Engineering, Control theory, Computer science, Backstepping, 020208 electrical & electronic engineering, 0202 electrical engineering, electronic engineering, information engineering, 02 engineering and technology, Electrical and Electronic Engineering, Torque observer
Published
2018

4. PU.1 directly regulates retinoic acid-induced expression of RIG-G in leukemia cells

Author

Guo-Qiang Chen, Shaofang Wu, Huchen Zhou, Ying Li Wu, Wei Liu, Han Zhang Xu, Chuan-Xu Liu, Meng Zhao, and Zhimin Gu

Subjects
Transcriptional Activation, viruses, Biophysics, Retinoic acid, Tretinoin, chemical and pharmacologic phenomena, Plasma protein binding, Biology, Biochemistry, Small hairpin RNA, chemistry.chemical_compound, RIG-G, Structural Biology, Cell Line, Tumor, Proto-Oncogene Proteins, Genetics, Humans, Gene silencing, Electrophoretic mobility shift assay, ATRA, RNA, Small Interfering, Promoter Regions, Genetic, Molecular Biology, Transcription factor, Leukemia, organic chemicals, PU.1, Intracellular Signaling Peptides and Proteins, Interferon-alpha, virus diseases, Cell Biology, biochemical phenomena, metabolism, and nutrition, Molecular biology, Retinoic acid receptor, chemistry, Cell culture, Trans-Activators, biological phenomena, cell phenomena, and immunity, IFNα, Protein Binding
Abstract

RIG-G is a retinoic acid- or interferon-induced gene with potential anti-proliferation function. However, the mechanism underlying ATRA-induced RIG-G induction is not completely understood. Here, we demonstrate that ATRA up-regulates the expression of PU.1, which in turn directly binds to the promoter and increases the expression of RIG-G gene. Luciferase reporter assay and electrophoretic mobility shift assay reveal that PU.1 preferentially binds to one of the two putative binding sites on the RIG-G promoter. Moreover, silencing of PU.1 by shRNA markedly inhibited ATRA- but not IFNα-induced expression of RIG-G. These data provide new insight into the mechanism of ATRA-induced RIG-G expression.

Published
2010

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