Research on Dynamic Characteristics and Control Method of Propelling Nozzle Based on MATLAB/AMESim Integrated Simulation

Abstract In this paper, the integrated simulation method is used to study the dynamic characteristics and control methods of propelling nozzle when it is coupled with the gas generator. The overall simulation model of the double-shaft hybrid exhaust turbofan engine was established by the volume inertia method under MATLAB/Simulink platform. A simulation model of the propelling nozzle hydraulic actuator was established under the AMESim platform. These two models are transmitted through the “Propelling Nozzle Throat Kinematics Simulation Module”, thus achieving the construction of the integrated simulation model. Then, based on the integrated model, a fuzzy self-tuning PI controller is developed. The quantization factor is obtained through optimization to further optimize the coupled dynamic response of the propelling nozzle. The simulation results show that the integrated simulation model captures the special change of aerodynamic force during the nozzle area adjustment process, which can more realistically show the working condition of the actuator. Controller design based on integrated simulation model is more reasonable. The fuzzy self-tuning PI controller used in this paper corrects the PI parameters online according to the fuzzy control rules, so that the hydraulic actuator of the nozzle formed by numerical simulation has faster response, and good dynamic characteristics. It has certain guiding significance for follow-up research.

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Investigating the dynamic characteristics of the hydrostatic bearing spindle system with active piezoelectric restrictors

Journal of Tribology ◽

10.1115/1.4053179 ◽

2021 ◽

pp. 1-20

Author(s):

Yixin Zhang ◽

Wei Pan ◽

Shuo Zhan ◽

Ran Huang ◽

Shujiang Chen ◽

...

Keyword(s):

Active Control ◽

Dynamic Characteristics ◽

Control Method ◽

Spindle System ◽

Optimization And Control ◽

And Control ◽

Pipeline Model ◽

Structural Optimization And Control ◽

Industrial Demand ◽

Active Control Method

Abstract Studies show that active control technology can improve system performance and meet the increasing industrial demand in diverse applications. In the present study, the dynamic characteristics of the bearing-spindle system based on active piezoelectric (PZT) restrictors, including the amplitude-frequency and phase-frequency characteristics are analyzed theoretically and experimentally. In the analysis, the influence of the pipeline model on the system characteristics is studied. Then the feasibility and effectiveness of the active control method are verified through experiments. It is demonstrated that the theoretical and experimental results are consistent. The present study is expected to provide a guideline for further investigations on the structural optimization and control law design for active hydrostatic oil-film bearing spindle systems.

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Design, Analysis, and Verification of an Electro- Hydrostatic Actuator for Distributed Actuation System

Sensors ◽

10.3390/s20030634 ◽

2020 ◽

Vol 20 (3) ◽

pp. 634 ◽

Cited By ~ 2

Author(s):

Yang Li ◽

Zongxia Jiao ◽

Zimeng Wang

Keyword(s):

Phase Difference ◽

Dynamic Characteristics ◽

High Efficiency ◽

Control Method ◽

Low Cost ◽

Detailed Structure ◽

Actuation System ◽

And Control ◽

Valve Control ◽

Direct Pump

In order to provide a simplified and low-cost solution of the terminal for a distributed actuation system, this paper proposes an electro-hydrostatic actuator (EHA) based on the linear drive principle. The proposed actuator is directly driven by a linear pump with a collaborative rectification mechanism, whose performance relies on the collaboration of the internal two units. A pair of linear oscillating motors are employed to drive the two pump units respectively. The control of the actuator is based on the modulation of the oscillating amplitude, frequency, and phase difference of the two motors. The advantage of this actuator is that no more valve control is needed to rectify the linear pump besides the high efficiency of the direct pump drive. In this paper, both schematic and detailed structure of the actuator is presented. The kinematic and dynamic characteristics are analyzed and modeled, based on which the control method is proposed. The experiments verify the validity of the actuator structure and control.

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Thrust Hydraulic System of Casing Rotater with Flow Adaptive Control

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.655-657.1460 ◽

2013 ◽

Vol 655-657 ◽

pp. 1460-1464

Author(s):

Xian Bin Lu ◽

Jian Hua Wei ◽

Rui Lin Feng ◽

Qiang Zhang

Keyword(s):

Adaptive Control ◽

Dynamic Characteristics ◽

Hydraulic System ◽

Control Method ◽

System Simulation ◽

Operating Principle ◽

Matlab Simulink ◽

Thrust System ◽

Simulation Results ◽

And Control

Thrust system is the key system of casing rotator. A thrust hydraulic system with flow adaptive control is designed, operating principle and control method are elaborated as well. In order to investigate the dynamic characteristics of the thrust hydraulic system, simulation analyses with the combined platform of AMESim and MATLAB/Simulink are carried out. The simulation results show that the designed thrust hydraulic system can meet the driving velocity requirement and reduce the overflow loss.

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Cooperative Lane-Change Maneuver for Multiple Automated Vehicles on a Highway

Automotive Innovation ◽

10.1007/s42154-019-00073-1 ◽

2019 ◽

Vol 2 (3) ◽

pp. 157-168 ◽

Cited By ~ 4

Author(s):

Yugong Luo ◽

Gang Yang ◽

Mingchang Xu ◽

Zhaobo Qin ◽

Keqiang Li

Keyword(s):

Trajectory Planning ◽

Control Method ◽

Lane Change ◽

Tracking Errors ◽

Integrated Simulation ◽

Lane Changes ◽

V2v Communication ◽

Multiple Vehicles ◽

Single Vehicle ◽

And Control

Abstract With the development of vehicle-to-vehicle (V2V) communication, it is possible to share information among multiple vehicles. However, the existing research on automated lane changes concentrates only on the single-vehicle lane change with self-detective information. Cooperative lane changes are still a new area with more complicated scenarios and can improve safety and lane-change efficiency. Therefore, a multi-vehicle cooperative automated lane-change maneuver based on V2V communication for scenarios of eight vehicles on three lanes was proposed. In these scenarios, same-direction and intersectant-direction cooperative lane changes were defined. The vehicle that made the cooperative decision obtained the information of surrounding vehicles that were used to cooperatively plan the trajectories, which was called cooperative trajectory planning. The cooperative safety spacing model was proposed to guarantee and improve the safety of all vehicles, and it essentially developed constraints for the trajectory-planning task. Trajectory planning was treated as an optimization problem with the objective of maximizing safety, comfort, and lane-change efficiency under the constraints of vehicle dynamics and the aforementioned safety spacing model. Trajectory tracking based on a model predictive control method was designed to minimize tracking errors and control increments. Finally, to verify the validity of the proposed maneuver, an integrated simulation platform combining MATLAB/Simulink with CarSim was established. Moreover, a hardware-in-the-loop test bench was performed for further verification. The results indicated that the proposed multi-vehicle cooperative automated lane-change maneuver can achieve lane changes of multiple vehicles and increase lane-change efficiency while guaranteeing safety and comfort.

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The Design and Control of Electromagnetic Actuator for Six-Axis Force Sensor Dynamic Calibration

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.693.1624 ◽

2016 ◽

Vol 693 ◽

pp. 1624-1631

Author(s):

Jiu Fang Pei ◽

De Zhang Xu ◽

Wan Zhang

Keyword(s):

Dynamic Characteristics ◽

Pid Control ◽

Measurement Accuracy ◽

Control Method ◽

Force Sensor ◽

Electromagnetic Actuator ◽

Small Gain ◽

Simulation Results ◽

And Control ◽

Sinusoidal Excitation

In order to calibrate six-axis force sensor dynamic characteristics, double E-type electromagnetic actuator is operated by electric magnets. It is capable of sending sinusoidal excitation signal with variable amplitude and frequency continuously. The theoretical modeling and linearization is established. Repetitive control plus proportion control method is presented. And the stabilization is analyzed by small gain theorem. Simulation results show, compared to PID control method, the proposed method has higher trajectory accuracy, no steady-state error and the slightly smaller bandwidth. It has theoretical and practical value to improve six-axis force sensor dynamic characteristics measurement accuracy.

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Perencanaan Pengendalian Kualitas Produk Pakaian Bayi dengan Metode Six Sigma Pada CV. AGP

JEMAP ◽

10.24167/jemap.v3i1.2632 ◽

2020 ◽

Vol 3 (1) ◽

Author(s):

Albertus Reynaldo Kurniawan ◽

Bayu Prestianto

Keyword(s):

Quality Control ◽

Continuous Improvement ◽

Six Sigma ◽

Screen Printing ◽

Control Method ◽

Operational Performance ◽

Machine Maintenance ◽

Quality Product ◽

Break Time ◽

And Control

Quality control becomes an important key for companies in suppressing the number of defective produced products. Six Sigma is a quality control method that aims to minimize defective products to the lowest point or achieve operational performance with a sigma value of 6 with only yielding 3.4 defective products of 1 million product. Stages of Six Sigma method starts from the DMAIC (Define, Measure, Analyze, Improve and Control) stages that help the company in improving quality and continuous improvement. Based on the results of research on baby clothes products, data in March 2018 the percentage of defective products produced reached 1.4% exceeding 1% tolerance limit, with a Sigma value of 4.14 meaning a possible defect product of 4033.39 opportunities per million products. In the pareto diagram there were 5 types of CTQ (Critical to Quality) such as oblique obras, blobor screen printing, there is a fabric / head cloth code on the final product, hollow fabric / thin fabric fiber, and dirty cloth. The factors caused quality problems such as Manpower, Materials, Environtment, and Machine. Suggestion for consideration of company improvement was continuous improvement on every existing quality problem like in Manpower factor namely improving comprehension, awareness of employees in producing quality product and improve employee's accuracy, Strength Quality Control and give break time. Materials by making the method of cutting the fabric head, the Machine by scheduling machine maintenance and the provision of needle containers at each employees desk sewing and better environtment by installing exhaust fan and renovating the production room.

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An Efficient Approach for Modeling and Control of a Quadrotor

Wasit Journal of Engineering Sciences ◽

10.31185/ejuow.vol4.iss2.44 ◽

2016 ◽

Vol 4 (2) ◽

pp. 1-16

Author(s):

Ahmed S. Khusheef

Keyword(s):

Pid Control ◽

Control Method ◽

Mechanical Design ◽

Loop Control ◽

Modeling And Control ◽

Loop Control System ◽

And Control ◽

Close Loop Control ◽

Close Loop Control System ◽

Made In

A quadrotor is a four-rotor aircraft capable of vertical take-off and landing, hovering, forward flight, and having great maneuverability. Its platform can be made in a small size make it convenient for indoor applications as well as for outdoor uses. In model there are four input forces that are essentially the thrust provided by each propeller attached to each motor with a fixed angle. The quadrotor is basically considered an unstable system because of the aerodynamic effects; consequently, a close-loop control system is required to achieve stability and autonomy. Such system must enable the quadrotor to reach the desired attitude as fast as possible without any steady state error. In this paper, an optimal controller is designed based on a Proportional Integral Derivative (PID) control method to obtain stability in flying the quadrotor. The dynamic model of this vehicle will be also explained by using Euler-Newton method. The mechanical design was performed along with the design of the controlling algorithm. Matlab Simulink was used to test and analyze the performance of the proposed control strategy. The experimental results on the quadrotor demonstrated the effectiveness of the methodology used.

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Application Study on Finger Joint Motion in Rehabilitation Training

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.644-650.879 ◽

2014 ◽

Vol 644-650 ◽

pp. 879-883

Author(s):

Jing Jing Yu

Keyword(s):

Control Method ◽

Finger Joint ◽

Continuous Passive Motion ◽

Joint Motion ◽

Joint Movement ◽

Rehabilitation Training ◽

Angle Data ◽

Finger Flexion ◽

And Control ◽

Flexion And Extension

In various forms of movement of finger rehabilitation training, Continuous Passive Motion (CPM) of single degree of freedom (1 DOF) has outstanding application value. Taking classic flexion and extension movement for instance, this study collected the joint angle data of finger flexion and extension motion by experiments and confirmed that the joint motion of finger are not independent of each other but there is certain rule. This paper studies the finger joint movement rule from qualitative and quantitative aspects, and the conclusion can guide the design of the mechanism and control method of finger rehabilitation training robot.

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