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Survey of autonomous guidance methods for powered planetary landing Review
Zheng-yu Song, Cong Wang, Stephan Theil, David Seelbinder, Marco Sagliano, Xin-fu Liu, Zhi-jiang Shao,zycalt12@sina.com
Frontiers of Information Technology & Electronic Engineering 2020, Volume 21, Issue 5, Pages 649-808 doi: 10.1631/FITEE.1900458
Keywords: 自主制导方法;定点软着陆;动力下降;非线性规划
Pulse Transiently Chaotic Neural Network for Nonlinear Constrained Optimization
Li Ying,Cao Hongzhao,Hu Yunchang,Shang Xiuming
Strategic Study of CAE 2004, Volume 6, Issue 5, Pages 45-48
Pulse Transiently Chaotic Neural Network (PTCNN) can find almost all optima including the part optima and the global with its abundance dynamical characteristic, when is used in nonlinear non-constrained optimization. The optimization problem is first unconstrained by virtue of non-differentiable exact penalty function, and is further solved by PTCNN. It is showed by an example that this method is efficient.
Keywords: PTCNN penalty function nonlinear constrained optimization
Linear programming method with LR type fuzzy numbersfor network scheduling
Gao Peng,Feng Junwen
Strategic Study of CAE 2009, Volume 11, Issue 2, Pages 70-74
Estimation of activity duration is a basic problem for project scheduling. However, the uncertainty of activity duration originates from both probability and fuzziness in the real world. This paper develops a linear programming method with LR type fuzzy numbers, which aims to estimate activity duration and identify critical path, and applies the λ - cut to indicate the degree of optimism of a decision maker. Finally, an example is given to demonstrate the application and validity of the proposed method.
Keywords: network scheduling fuzzy linear programming activity
Nonlinear Model-Based Process Operation under Uncertainty Using Exact Parametric Programming
Vassilis M. Charitopoulos,Lazaros G. Papageorgiou,Vivek Dua
Engineering 2017, Volume 3, Issue 2, Pages 202-213 doi: 10.1016/J.ENG.2017.02.008
In the present work, two new, (multi-)parametric programming (mp-P)-inspired algorithms for the solution of mixed-integer nonlinear programming (MINLP) problems are developed, with their main focus being on process synthesis problems. The algorithms are developed for the special case in which the nonlinearities arise because of logarithmic terms, with the first one being developed for the deterministic case, and the second for the parametric case (p-MINLP). The key idea is to formulate and solve the square system of the first-order Karush-Kuhn-Tucker (KKT) conditions in an analytical way, by treating the binary variables and/or uncertain parameters as symbolic parameters. To this effect, symbolic manipulation and solution techniques are employed. In order to demonstrate the applicability and validity of the proposed algorithms, two process synthesis case studies are examined. The corresponding solutions are then validated using state-of-the-art numerical MINLP solvers. For p-MINLP, the solution is given by an optimal solution as an explicit function of the uncertain parameters.
Keywords: Parametric programming Uncertainty Process synthesis Mixed-integer nonlinear programming Symbolic manipulation
Connected Vehicle Based Traffic Signal Coordination Article
Wan Li, Xuegang Ban
Engineering 2020, Volume 6, Issue 12, Pages 1463-1472 doi: 10.1016/j.eng.2020.10.009
This study presents a connected vehicles (CVs)-based traffic signal optimization framework for a coordinated arterial corridor. The signal optimization and coordination problem are first formulated in a centralized scheme as a mixed-integer nonlinear program (MINLP). The optimal phase durations and offsets are solved together by minimizing fuel consumption and travel time considering an individual vehicle’s trajectories. Due to the complexity of the model, we decompose the problem into two levels: an intersection level to optimize phase durations using dynamic programming (DP), and a corridor level to optimize the offsets of all intersections. In order to solve the two-level model, a prediction-based solution technique is developed. The proposed models are tested using traffic simulation under various scenarios. Compared with the traditional actuated signal timing and coordination plan, the signal timing plans generated by solving the MINLP and the two-level model can reasonably improve the signal control performance. When considering varies vehicle types under high demand levels, the proposed two-level model reduced the total system cost by 3.8% comparing to baseline actuated plan. MINLP reduced the system cost by 5.9%. It also suggested that coordination scheme was beneficial to corridors with relatively high demand levels. For intersections with major and minor street, coordination conducted for major street had little impacts on the vehicles at the minor street.
Keywords: Connected vehicles Traffic signal coordination Dynamic programming Two-level optimization Mixed-integer nonlinear program
Application of Genetic Algorithm in the Optimization of Parameters in Engineering Blasting
Xu Hongtao,Lu Wenbo
Strategic Study of CAE 2005, Volume 7, Issue 1, Pages 76-80
The optimization of blasting parameters in engineering blasting is a complicated nonlinear programming problem. Based on the mathematical model of blasting optimization in open pit mine, the optimization problem is solved with genetic algorithm in this paper, and the feasibility and high effectiveness of optimizing blasting parameters with genetic algorithm are proved by the results. It has provided a new effective approach for solving this problem.
Keywords: engineering blasting mining optimization mathematical model nonlinear programming genetic algorithm
Nonlinear programming control using differential aerodynamic drag for CubeSat formation flying Article
Sheng-chao DENG, Tao MENG, Zhong-he JIN
Frontiers of Information Technology & Electronic Engineering 2017, Volume 18, Issue 7, Pages 867-881 doi: 10.1631/FITEE.1500493
Keywords: QB50 ZJUCubeSat Atmospheric drag Formation flying
Hohmann transfer via constrained optimization None
Li XIE, Yi-qun ZHANG, Jun-yan XU
Frontiers of Information Technology & Electronic Engineering 2018, Volume 19, Issue 11, Pages 1444-1458 doi: 10.1631/FITEE.1800295
Inspired by the geometric method proposed by Jean-Pierre MAREC, we first consider the Hohmann transfer problem between two coplanar circular orbits as a static nonlinear programming problem with an inequality constraint. By the Kuhn-Tucker theorem and a second-order sufficient condition for minima, we analytically prove the global minimum of the Hohmann transfer. Two sets of feasible solutions are found: one corresponding to the Hohmann transfer is the global minimum and the other is a local minimum. We next formulate the Hohmann transfer problem as boundary value problems, which are solved by the calculus of variations. The two sets of feasible solutions are also found by numerical examples. Via static and dynamic constrained optimizations, the solution to the Hohmann transfer problem is re-discovered, and its global minimum is analytically verified using nonlinear programming.
Keywords: Hohmann transfer Nonlinear programming Constrained optimization Calculus of variations
第17届全国非线性振动暨第14届全国非线性动力学、运动稳定性学术会议
Conference Date: 10 May 2019
Conference Place: 中国/江苏/南京
Administered by: 中国振动工程学会非线性振动专业委员会
Li Hongbin,Zhang Chenghui,Song Jun
Strategic Study of CAE 2001, Volume 3, Issue 9, Pages 52-57
The paper analyzes common methods for the optimal scheduling modeling problem of variable-pressure variable-flow operation of inverter-drive pumps connected in parallel and compares the merits and defects of them. In the common method, the objective function is the shaft horsepower of the pumps and the constrained conditions are water supply target and high-efficiency area of pumps. In another method, the objective function is the square of the difference between the actual and needed flow when satisfying the lift target and the constrained conditions are high-efficiency areas of pumps. The paper proposes a new modeling method, which is compatible with the actual operation and has higher precision and satisfies the engineering requirement on lower switching frequency. Simulation results have proved its validity.
Keywords: optimal scheduling nonlinear bounded programming speed regulation of pumps
Indirect adaptive fuzzy-regulated optimal control for unknown continuous-time nonlinear systems
Haiyun Zhang, Deyuan Meng, Jin Wang, Guodong Lu,gray_sun@zju.edu.cn,tinydreams@126.com,dwjcom@zju.edu.cn,lugd@zju.edu.cn
Frontiers of Information Technology & Electronic Engineering 2021, Volume 22, Issue 2, Pages 141-286 doi: 10.1631/FITEE.1900610
Keywords: Indirect adaptive optimal control Hamilton-Jacobi-Bellman equation Fuzzy-regulated critic Adaptive optimal control actor Actor-critic structure Unknown nonlinear systems
Qihao Liu, Xinyu Li, Liang Gao
Engineering 2021, Volume 7, Issue 6, Pages 807-817 doi: 10.1016/j.eng.2021.04.011
Intelligent process planning (PP) is one of the most important components in an intelligent manufacturing system and acts as a bridge between product designing and practical manufacturing. PP is a nondeterministic polynomial-time (NP)-hard problem and, as existing mathematical models are not formulated in linear forms, they cannot be solved well to achieve exact solutions for PP problems. This paper proposes a novel mixed-integer linear programming (MILP) mathematical model by considering the network topology structure and the OR nodes that represent a type of OR logic inside the network. Precedence relationships between operations are discussed by raising three types of precedence relationship matrices. Furthermore, the proposed model can be programmed in commonly-used mathematical programming solvers, such as CPLEX, Gurobi, and so forth, to search for optimal solutions for most open problems. To verify the effectiveness and generality of the proposed model, five groups of numerical experiments are conducted on well-known benchmarks. The results show that the proposed model can solve PP problems effectively and can obtain better solutions than those obtained by the state-ofthe- art algorithms.
Keywords: Process planning Network Mixed-integer linear programming CPLEX
Research on Nonlinear Combination Forecasting Approach Based on BP-AGA
Wang Shuo,Zhang Youfu,Jin Juliang
Strategic Study of CAE 2005, Volume 7, Issue 4, Pages 83-87
A nonlinear combination forecasting model was established by using neural network and accelerating genetic algorithm (AGA) in the paper. AGA was used to optimize the network parameters as BP approach was slow with training network. Optimization results of AGA were taken as original values of BP approach, the network was trained with BP approach. Network convergence rate was increased with running BP approach and AGA alternately. Meanwhile the part least problem was improved. Examples were presented finally, as a result, the forecasting precision high in evidence.
Keywords: neural network accelerating genetic algorithm nonlinear combination forecasting forecasting precision
Hong-chao Wang, Wei-wei Zhang, Xun-cheng Wu, Hao-tian Cao, Qiao-ming Gao, Su-yun Luo,17721336541@163.com,zwwsues@163.com,longxd2714@163.com,yjs_liqing@163.com,mosxsues@163.com,ly18362885604@163.com
Frontiers of Information Technology & Electronic Engineering 2020, Volume 21, Issue 7, Pages 963-1118 doi: 10.1631/FITEE.1900185
Keywords: Automated truck Trajectory planning Nonlinear model predictive control Longitudinal slip
SpaceX Starship Lands on Earth, But Manned Missions to Mars Will Require More
Chris Palmer
Engineering 2021, Volume 7, Issue 10, Pages 1345-1347 doi: 10.1016/j.eng.2021.08.005
Title Author Date Type Operation
Survey of autonomous guidance methods for powered planetary landing
Zheng-yu Song, Cong Wang, Stephan Theil, David Seelbinder, Marco Sagliano, Xin-fu Liu, Zhi-jiang Shao,zycalt12@sina.com
Journal Article
Pulse Transiently Chaotic Neural Network for Nonlinear Constrained Optimization
Li Ying,Cao Hongzhao,Hu Yunchang,Shang Xiuming
Journal Article
Linear programming method with LR type fuzzy numbersfor network scheduling
Gao Peng,Feng Junwen
Journal Article
Nonlinear Model-Based Process Operation under Uncertainty Using Exact Parametric Programming
Vassilis M. Charitopoulos,Lazaros G. Papageorgiou,Vivek Dua
Journal Article
Application of Genetic Algorithm in the Optimization of Parameters in Engineering Blasting
Xu Hongtao,Lu Wenbo
Journal Article
Nonlinear programming control using differential aerodynamic drag for CubeSat formation flying
Sheng-chao DENG, Tao MENG, Zhong-he JIN
Journal Article
第17届全国非线性振动暨第14届全国非线性动力学、运动稳定性学术会议
10 May 2019
Conference Information
Optimal Scheduling of Variable-pressure Variable-flow Operation of Inverter-drive Pumps Connected in Parallel
Li Hongbin,Zhang Chenghui,Song Jun
Journal Article
Indirect adaptive fuzzy-regulated optimal control for unknown continuous-time nonlinear systems
Haiyun Zhang, Deyuan Meng, Jin Wang, Guodong Lu,gray_sun@zju.edu.cn,tinydreams@126.com,dwjcom@zju.edu.cn,lugd@zju.edu.cn
Journal Article
A Novel MILP Model Based on the Topology of a Network Graph for Process Planning in an Intelligent Manufacturing System
Qihao Liu, Xinyu Li, Liang Gao
Journal Article
Research on Nonlinear Combination Forecasting Approach Based on BP-AGA
Wang Shuo,Zhang Youfu,Jin Juliang
Journal Article
A double-layered nonlinear model predictive control based control algorithm for local trajectory planning for automated trucks under uncertain road adhesion coefficient conditions
Hong-chao Wang, Wei-wei Zhang, Xun-cheng Wu, Hao-tian Cao, Qiao-ming Gao, Su-yun Luo,17721336541@163.com,zwwsues@163.com,longxd2714@163.com,yjs_liqing@163.com,mosxsues@163.com,ly18362885604@163.com
Journal Article