|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Roll-pitch-yaw autopilot design for nonlinear time-varying missile using partial state observer based global fast terminal sliding mode control显示文摘The acceleration autopilot design for skid-to-turn(STT) missile faces a great challenge owing to coupling effect among planes, variation of missile velocity and its parameters, inexistence of a complete state vector, and nonlinear aerodynamics. Moreover, the autopilot should be designed for the entire flight envelope where fast variations exist. In this paper, a design of integrated roll-pitch-yaw autopilot based on global fast terminal sliding mode control(GFTSMC) with a partial state nonlinear observer(PSNLO) for STT nonlinear time-varying missile model, is employed to address these issues. GFTSMC with a novel sliding surface is proposed to nullify the integral error and the singularity problem without application of the sign function. The proposed autopilot consisting of two-loop structure, controls STT maneuver and stabilizes the rolling with a PSNLO in order to estimate the immeasurable states as an output while its inputs are missile measurable states and control signals. The missile model considers the velocity variation, gravity effect and parameters' variation. Furthermore, the environmental conditions' dynamics are modeled. PSNLO stability and the closed loop system stability are studied. Finally, numerical simulation is established to evaluate the proposed autopilot performance and to compare it with existing approaches in the literature. | Ahmed Awad Wang Haoping | 2016 | Chinese Journal of Aeronautics2016，29，5： | 9 |
| 2 | The equivalent potential of water molecules for electronic structure of lysine显示文摘In order to get more reliable electronic structures of proteins in aqueous solution, it is necessary to construct a potential of water molecules for protein’s electronic structure calculation. The lysine is a hydrophilic amino acid. It is positively charged (Lys+) in neutral water solution. The first-principles, all-electron, ab initio calcula-tions, based on the density functional theory, have been performed to construct such an equivalent potential of water molecules for lysine (Lys+). The process consists of three parts. First, the electronic structure of the cluster containing Lys+ and water molecules is calculated. By adjusting the positions of water molecules, the geometric structure of the cluster having minimum total energy is determined. Then, based on the structure, the electronic structure of Lys+ with the potential of water molecules is calculated using the self-consistent cluster-embedding (SCCE) method. Finally, the electronic structure of Lys+ with the potential of dipoles is calculated. The dipoles are adjusted so that the electronic structure of Lys+ with the potential of dipoles is close to that of water molecules. Thus the equivalent potential of water molecules for the electronic structure of lysine is obtained. The major effect of water molecules on lysine’s electronic structure is raising the occupied eigenvalues about 0.5032 eV, and broadening energy gap 89%. The effect of water molecules on the electronic structure of lysine can be simulated by dipoles potential. | LI ChunJie ZHENG HaoPing WANG XueMei | 2007 | Science China(Physics,Mechanics & Astronomy)2007，50，1： | 4 |
| 3 | Effect of Titanium on Homogenizing Process and Microstructure of Alloy 2618显示文摘 | Tingting Liu Ya Liu Xuping Su Haoping Peng Jianhua Wang | 2014 | High Temperature Materials and Processes2014，，3： | 1 |
| 4 | A complementarity for extended Langmuir method显示文摘 | Qingdao Wang Genxiang Luo Haoping Wang Chuangye Hou Jun Jin | 2006 | Journal of Colloid and Interface Science2006，，297： | 1 |
| 5 | Study on physico- chemical properties and catalytic activity of BSiZrAPO- 5 catalysts in linear alkylbenzene synthesis显示文摘 | Peiyong Lian Wenyi Gao Fushan Yan Weqiao Liu Gong Li Haoping Wang Guida Sun | 2002 | Catalysis today2002，74，： | 1 |
| 6 | Strong interaction of colloidal particles:an extension of Langmuir's method显示文摘 | Luo Genxiang Wang Haoping J in Jun | 2001 | Langmuir2001，17，7： | 1 |
| 7 | A Fractional-Order Ultra-Local Model-Based Adaptive Neural Network Sliding Mode Control of n-DOF Upper-Limb Exoskeleton With Input Deadzone显示文摘This paper proposes an adaptive neural network sliding mode control based on fractional-order ultra-local model for n-DOF upper-limb exoskeleton in presence of uncertainties,external disturbances and input deadzone.Considering the model complexity and input deadzone,a fractional-order ultra-local model is proposed to formulate the original dynamic system for simple controller design.Firstly,the control gain of ultra-local model is considered as a constant.The fractional-order sliding mode technique is designed to stabilize the closed-loop system,while fractional-order time-delay estimation is combined with neural network to estimate the lumped disturbance.Correspondingly,a fractional-order ultra-local model-based neural network sliding mode controller(FO-NNSMC) is proposed.Secondly,to avoid disadvantageous effect of improper gain selection on the control performance,the control gain of ultra-local model is considered as an unknown parameter.Then,the Nussbaum technique is introduced into the FO-NNSMC to deal with the stability problem with unknown gain.Correspondingly,a fractional-order ultra-local model-based adaptive neural network sliding mode controller(FO-ANNSMC) is proposed.Moreover,the stability analysis of the closed-loop system with the proposed method is presented by using the Lyapunov theory.Finally,with the co-simulations on virtual prototype of 7-DOF iReHave upper-limb exoskeleton and experiments on 2-DOF upper-limb exoskeleton,the obtained compared results illustrate the effectiveness and superiority of the proposed method. | Dingxin He HaoPing Wang Yang Tian Yida Guo | 2024 | IEEE/CAA Journal of Automatica Sinica2024，11，3： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员