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Chinese Journal of Aeronautics 2024年第8期37卷 106-123页

作者： Yifan WANG Zhengping ZOU Pengcheng DU Lichao YAO Huoxing LIU Yusen XU Research Institute of Aero-Engine Beihang UniversityBeijing 102206China National Key Laboratory of Science and Technology on Aero-Engine and Aero-Thermodynamics Beihang UniversityBeijing 102206China

An advanced precooled airbreathing engine with a closed Brayton cycle is a promising solution for high-speed propulsion,of which the Synergetic Air Breathing Rocket Engine(SABRE)is a representative *** performance of the latest SABRE-4 cycle was analyzed in this ***,a relatively complete engine performance model that considers the characteristics of turbomachinery and heat exchangers was ***,Sobol’global sensitivity analysis of key performance parameters was carried out to identify the most influential design *** specific impulses under different target specific thrusts were obtained by particle swarm optimization,of which the thermodynamic parameters corresponding to a specific thrust of 1.12 kN·s·kg^(-1)and a specific impulse of 3163 s were chosen as the design *** different control laws were analyzed in contrast,and the charge control method had the strongest ability of thrust regulation as well as maintaining a favorable specific impulse ***,working characteristics under the charge control and over a typical flight envelope were calculated,in which the average value of the maximum specific impulse was as high as 5315 *** study would help to deepen the understanding of SABRE-4 thermodynamic characteristics and other precooled airbreathing engine cycles with similar layouts.

关键词： Hypersonic Precooled airbreathing engine Thermodynamic cycle control law Working characteristics

Dynamical Correction of control laws for Marine Ships’ Accurate Steering

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Journal of Marine Science and Application 2014年第2期13卷 127-133页

作者： Evgeny I. Veremey Computer Applications and Systems Department Saint Petersburg University 198504 Russia

The objective of this work is the analytical synthesis problem for marine vehicles autopilots design. Despite numerous known methods for a solution, the mentioned problem is very complicated due to the presence of an extensive population of certain dynamical conditions, requirements and restrictions, which must be satisfied by the appropriate choice of a steering control law. The aim of this paper is to simplify the procedure of the synthesis, providing accurate steering with desirable dynamics of the control system. The approach proposed here is based on the usage of a special unified multipurpose control law structure that allows decoupling a synthesis into simpler particular optimization problems. In particular, this structure includes a dynamical corrector to support the desirable features for the vehicle＇s motion under the action of sea wave disturbances. As a result, a specialized new method for the corrector design is proposed to provide an accurate steering or a trade-off between accurate steering and economical steering of the ship. This method guaranties a certain flexibility of the control law with respect to an actual environment of the sailing;its corresponding turning can be realized in real time onboard.

关键词： marine ships control law dynamical corrector accurate steering autopilot sea wave

Experimental study on dynamic stall control based on AC-DBD actuation

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Plasma Science and Technology 2021年第11期23卷 96-109页

作者： Hesen YANG Hua LIANG Guangyin ZHAO Bo WANG Shengwu ZHANG Weiliang KONG Science and Technology on Plasma Dynamics Laboratory Air Force Engineering UniversityXi'an 710038People's Republic of China State Key Laboratory of Aerodynamics China Aerodynamics Research and Development CenterMianyang 621000People's Republic of China National Key Laboratory of Rotorcraft Aeromechanics Nanjing University of Aeronautics and AstronauticsNanjing 210016People's Republic of China Institute of Noise&Vibration Naval University of EngineeringWuhan 430030People's Republic of China Academician Workstation Foundation of the Green Aerotechnics Research Institute of Chonging Jiaotong University Chongqing 401120People's Republic of China

To explore AC-DBD's ability in controlling dynamic stall,a practical SC-1095 airfoil of a helicopter was selected,and systematic wind tunnel experiments were carried out through direct aerodynamic *** effectiveness of dynamic stall control under steady and unsteady actuation is *** influence of parameters such as constant actuation voltage,pulsed actuation voltage,pulsed actuation frequency and duty ratio on dynamic stall control effect is studied under the flow condition of k=0.15 above the airfoil,and the corresponding control mechanism is *** actuation can effectively reduce the hysteresis loop area of dynamic lift,and control the peak drag and moment *** unsteady actuation,there is an optimal duty ratio DC=50%,which has the best effect in improving the lift and drag characteristics,and there is a threshold of pulsed actuation voltage in dynamic stall *** optimal dimensionless frequency will not be found;different F+have different control advantages in different aerodynamic coefficients of different pitching *** actuation has obvious control advantages in improving the lift-drag characteristics and hysteresis,while steady actuation can better control the large nose-down moment.

关键词： dynamic stall plasma flow control AC-DBD parameter control law

Optimal Filtering Correction forMarine Dynamical Positioning control System

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Journal of Marine Science and Application 2016年第4期15卷 452-462页

作者： Evgeny Veremey Margarita Sotnikova Applied Mathematics and control Processes Faculty Saint Petersburg University Saint Petersburg 198504 Russia

This paper focuses on the problem of control law optimization for marine vessels working in a dynamical positioning （DP） regime. The approach proposed here is based on the use of a special unified multipurpose control law structure constructed on the basis of nonlinear asymptotic observers, that allows the decoupling of a synthesis into simpler particular optimization problems. The primary reason for the observers is to restore deficient information concerning the unmeasured velocities of the vessel. Using a number of separate items in addition to the observers, it is possible to achieve desirable dynamical features of the closed loop connection. The most important feature is the so-called dynamical corrector, and this paper is therefore devoted to solving its optimal synthesis in marine vessels controlled by DP systems under the action of sea wave disturbances. The problem involves the need for minimal intensity of the control action determined by high frequency sea wave components. A specialized approach for designing the dynamical corrector is proposed and the applicability and effectiveness of the approach are illustrated using a practical example of underwater DP system synthesis.

关键词： dynamical positioning control law observer stability filter external disturbances sea waves corrector integral action

The controller Design of the Water-Aerial Vehicle Based on Variable Gain PID

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The Controller Design of the Water-Aerial Vehicle Based on V...

第32届中国控制与决策会议

作者： Liu huanxiao Meng Zihan Yang Xiaofei Ding Shihong School of Information Engineering Zhenjiang Vocational Technical College School of Electronics and Information Jiangsu University of Science and Technology School of Electrical and Information Engineering Jiangsu University

ISBN: (数字)9781728158556

ISBN: (纸本)9781728158563

Combining the advantages of unmanned aerial vehicle（UAV） and unmanned surface vehicle（USV）,water-aerial vehicles satisfy the requirements of operation in water-air amphibious *** to the medium characteristics of air and water are different,it is difficult to maintain stability of the amphibious vehicle in the operation stage of *** order to solve this problem,the mathematical models of the amphibious vehicle are established in different motion stages,and one stability controller is designed based on the variable gain *** simulation results show that the proposed control method is feasible and meets the requirements of the water-air amphibious vehicle.

关键词： Aerial-water Vehicle control law Variable Gain PID

DECENTRALIZED ADAPTIVE control FOR LINEAR TIME INVARIENT SYSTEMS WITH FIRST ORDER INTERCONNECTIONS

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Transactions of Nanjing University of Aeronautics and Astronautics 1999年第1期16卷 80-85页

作者：黄金泉孙健国南京航空航天大学动力工程系

A new decentralized adaptive control scheme is presented for linear time invariant systems with first order interconnections. The proposed control scheme with “proportional plus integral” terms is used to improve the convergence rate and the ultimate bound of the tracking error. It is important to note that the adaptive scheme uses lower adaptive gains and smaller control inputs to avoid input saturation and oscillatory behavior. Simulation results are illustrated for controlling a dual inverted pendulum and a multivariable turbofan engine using the proposed adaptive scheme. These simulations validate out conclusions.

关键词： decentralized control model reference adaptive control control law numerical simulation

Modeling and Simulation of Lazy Eight Aircraft Maneuver

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Modeling and Simulation of Lazy Eight Aircraft Maneuver

2012年计算机应用与系统建模国际会议

作者： Pan Wenjun Liu Xing-Yu Wang Lixin School of Aeronautic Science and Engineering Beijing University of Aeronautics and Astronautics General Configuration and Aerodynamics Department of Shanghai Aircraft Design and Research Institute

The Lazy Eight aircraft maneuver is researched through numerical simulation. First, a six DOF aircraft flight dynamics model is developed. To control the aircraft performing the maneuver, a basic flight control law is designed, employing classical PID controllers in both pitch and roll loop. Commands for maneuver simulation are derived from the descriptions of Lazy Eight maneuver flight procedure. By proper settings of the commands and PID controllers’ gain values, Lazy Eight maneuver simulation is conducted exactly according to the maneuver descriptions. The model established in paper also provides researchers and a method to simulate other aircraft maneuvers.

关键词： Flight dynamics Flight simulation control law PID controller Lazy Eight

Research on control Algorithm Design for Aero-Engine Vane Angle on Dynamic Process

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Research on Control Algorithm Design for Aero-Engine Vane An...

第25届中国控制与决策会议

作者：曲涛郝彬彬刘严严栾东沈阳发动机设计研究所

This paper investigates the control law of aero-enginevane angle on dynamic process. Two kinds of corrected algorithm is presented to solve the problem of large pertur bation of vane angle at the end of dynamic process. The problem is solved by using them ethod of slope restri ction on perturbation and reducing the am plitude of the perturbation. The effectness of two methods is validated by simulation, and simulation results show that the presented algorithm can be used both individually and associatively. By using these methods, the perturbation of vane angle on dynamic process can be reduced, andaccordingly, the stability influence of engine in transition process is ensured better.

关键词： Aero-engine Vane angle control law Dynamic process

Event-Triggered Real-Time Scheduling Stabilization of Fuzzy Systems via A New Weighted Matrix Approach

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Event-Triggered Real-Time Scheduling Stabilization of Fuzzy ...

第30届中国控制与决策会议

作者： Yanan Liu Xiangpeng Xie Xiangyong Chen School of Automation Nanjing University of Posts and Telecommunications Institute of Advanced Technology Nanjing University of Posts and Telecommunications School of Automation and Electrical Engineering Linyi University

In this paper, we introduce a new method to reduce the conservativeness of real-time scheduling stabilization for nonlinear systems in terms of T-S fuzzy model. Different from the previous method, a more relaxed stability condition of nonlinear systems is proposed via one weighted matrix approach. This paper adopts a so-called maximum-prioritybased control law, which uses the more useful information than those previous results. That is to say, the control law has considered the different roles of the normalized fuzzy weight function at each time instant. Finally, the simulation results of a simple and typical nonlinear system model are provided to further illustrate the effectiveness of this proposed method.

关键词： Fuzzy models Nonlinear systems Conservativeness control law

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大涵道比涡扇发动机稳态控制规律对比分析

大涵道比涡扇发动机稳态控制规律对比分析

中国航天第三专业信息网第四十届技术交流会暨第四届空天动力联合会议

作者：赵军唐弋棣付尧明中国民航飞行学院航空工程学院 L.A.Turbine涡轮机械公司

航空发动机的控制规律作用巨大,它决定了发动机能否获得设定的稳态工作下性能指标,同时保证工作过程中的压气机和涡轮的气动稳定性。控制规律选取的目标是有效地挖掘发动机的使用潜力,并有效提高其使用寿命。研究采用部件特性法对发动... 详细信息

航空发动机的控制规律作用巨大,它决定了发动机能否获得设定的稳态工作下性能指标,同时保证工作过程中的压气机和涡轮的气动稳定性。控制规律选取的目标是有效地挖掘发动机的使用潜力,并有效提高其使用寿命。研究采用部件特性法对发动机进行稳态建模,并针对民航大涵道比涡扇发动机的稳态模型进行三种不同控制规律下的仿真,得到发动机性能参数的不同变化趋势,并对其进行对比分析。结果表明:N1保持不变作为稳态控制规律时可以在高空巡航点推力满足指标时地面推力最大,满足了起飞推力大的要求。在0-0.6的马赫数区间内,随着飞行速度的增加,发动机的推力下降。在0.7-0.9的速度区间内,控制规律N1保持不变下推力稍有增加。外界大气温度增加使得推力下降,而控制规律N1保持不变下的推力衰退最慢。

关键词： aero-engine steady state control law