Guang-Hong Liu

Synchronous Obstacle Avoidance Tracking Control Scheme for Snake Robots With State Constraints and Interference Compensation

Dongfang Li, Chushuo Wu, Guang-Hong Liu, Limin Zhu et autres

This work proposes a synchronous obstacle avoidance tracking control framework with state constraints and interference compensation to achieve autonomous obstacle avoidance and track reference paths for snake robots. In the kinematic, an improved robust line-of-sight (LOS) strategy based on reduced-order extended state …

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Terrain Perception and Stiffness Adaptation-Based Attitude Control for Quadruped Robots

Yanwei Huang, Yijun Li, Guang-Hong Liu, Dongfang Li et autres

This work reports a terrain perception and stiffness adaptive control scheme with no vision. This strategy can enable quadruped robots to operate in a stable posture in unstructured geographic environments. We design a terrain perception controller using Kalman filtering observation technology to …

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Integrating preference based weighted sum into evolutionary multi-objective optimization

Guang-Hong Liu, Gang Wu, Tao Zheng, Qing Hua Ling

Most of the recent studies on evolutionary multi-objective optimization (EMO) focus on finding the whole set of Pareto optimal solutions. In practice, the users are normally interested in some regions of Pareto front which satisfy their preferences and an ultimate decision making …

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Multi-Objective Nonlinear Model Predictive Control: Lexicographic Method

Tao Zheng, Gang Wu, Guang-Hong Liu, Qing Hua Ling

In this chapter, to avoid the disadvantages of weight coefficients in multi-objective dynamic optimization, lexicographic (completely stratified) and partially stratified frameworks of multi-objective controller are proposed. The lexicographic framework is absolutely prioritydriven and the partially stratified framework is a modification of it, …

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Analysis of lumbar bone mineral density of 575 individuals by QCT examination.

Wenqing Chen, Shen Ning-jiang, Guang-Hong Liu

[Objective]To analyze the relation of age and sex with the incidence of physical examinees with osteoporosis and low bone mass of vertebras.[Method]Quantitative CT(QCT) was used to examine and analyze the lumbar bone mineral density in 575 physical examinees.The data was analyzed by …

Stratified Multi-Objective Nonlinear Model Predictive Control

Guang-Hong Liu

To avoid the disadvantages of both weight coefficients and lexicographic method in multi-objective dynamic optimization,a framework of the stratified multi-objective nonlinear model predictive controller is proposed.The controller is realized based on a modified genetic algorithm,with stair-like control strategy that can reduce the …

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Vulnerability Analysis for X86 Executables Using Genetic Algorithm and Fuzzing

Guang-Hong Liu, Gang Wu, Tao Zheng, Jianmei Shuai et autres

Fuzzing was successfully used to discover security bugs in popular programs, though released without source code. It becomes a major tool in security analysis, but needs large input space, ineffective. This paper presents a new method for the identification of vulnerabilities in …

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