scholarly journals The mathematical model of the pilot’s ejection process by using the K-36DM ejection seat

2018 ◽  
Vol 48 (1) ◽  
pp. 515-541
Author(s):  
Grzegorz Kowaleczko ◽  
Andrzej Długołęcki ◽  
Marek Sosnowski
Keyword(s):  
Mathematical Model ◽  
Simulation Model ◽  
Flight Phase ◽  
Ejection Process ◽  
The Mathematical Model

Abstract The article presents a mathematical model of ejection process, which can be used to analyse the movement of the seat-pilot system in flight phase until ejecting the headrest and may also be utilised to assess the movement of the seat after the pilot has separated when the seat has been propelled out of the aircraft. By constructing the model, the information was used regarding the K-36DM ejection seat, which was supplemented with data on other ejection seats. The demonstrated mathematical model provides a basis to produce a simulation model useful in estimating the efficiency of ejection applying the K-36DM seat.

The Control and Model of Synchronous Generator on Ship

2012 ◽  
Vol 195-196 ◽  
pp. 1095-1101
Author(s):  
Le Luo ◽  
Lan Gao ◽  
Liang Chen ◽  
Liang Hu
Keyword(s):  
Mathematical Model ◽  
Control System ◽  
Simulation Model ◽  
Synchronous Generator ◽  
Excitation Control ◽  
Synchronous Generators ◽  
Simulation Test ◽  
Power Station ◽  
Model And Simulation ◽  
The Mathematical Model

This paper analyzes the characteristics of marine power station. The mathematical model and simulation model of synchronous generators AVR+PSS excitation control system was built. At last the simulation test of suddenly add load was did in MATLAB/simulink environment. The result shows that the excitation control system has well stability, rapidity and some robustness.

Research on the Simulation of Tension Control System of the Traction Wire Rope Cleaning and Detection Line of Pay-Off Unit

2014 ◽  
Vol 635-637 ◽  
pp. 1451-1456
Author(s):  
Guo Ping Li ◽  
Yan Fei Gao ◽  
Cheng Wang
Keyword(s):  
Mathematical Model ◽  
Control System ◽  
Simulation Model ◽  
Wire Rope ◽  
Tension Control ◽  
General Law ◽  
Braking Torque ◽  
Magnetic Braking ◽  
Tension Control System ◽  
The Mathematical Model

Take the traction wire rope cleaning and detection line of pay-off unit as an example, investigate the general law of the change during paying off of traction wire rope cleaning and detection line and build the mathematical model in each step of the paying off tension control system. Build the simulation model using MATLAB on the foundation of the mathematical model and research on the model. Afterwards, it is proved that the demand of keeping the tension of pay-off unit constant can be meet through regulating magnetic braking torque of pay-off unit.

scholarly journals Uptake of cadmium by Pseudokirchneriella supcapitata

2005 ◽  
Vol 48 (6) ◽  
pp. 1027-1034 ◽  
Author(s):  
Magela Paula Casiraghi ◽  
Samuel Luporini ◽  
Eduardo Mendes da Silva
Keyword(s):  
Mathematical Model ◽  
Metal Ions ◽  
Simulation Model ◽  
Kinetic Parameters ◽  
Cellular Membrane ◽  
Surface Absorption ◽  
Fast Absorption ◽  
Passive Adsorption ◽  
Two Stages ◽  
The Mathematical Model

In this work the microalgae Pseudokirchneriella supcapitata was used for the removal of the cadmium in liquids. The accumulations of metal ions by the alga occur in two stages: a very fast absorption (passive adsorption) proceeded by a slower absorption (activate absorption). A mathematical model based on the surface absorption and on the transport into the interior of the cellular membrane was developed. The simulation model kinetic parameters were experimentally obtained. Through the results observed, the mathematical model was shown to be suitable when compared to the experimental results, confirming the validation of the mathematical model.

Mathematical Model of the Servo Drive with Friction Wheals. Simulations and Real Object Examination Results

2013 ◽  
Vol 198 ◽  
pp. 15-20 ◽  
Author(s):  
Lukasz Fracczak
Keyword(s):  
Mathematical Model ◽  
Cardiac Surgery ◽  
Control System ◽  
Simulation Model ◽  
Degrees Of Freedom ◽  
Point Of View ◽  
Real Object ◽  
Servo Drive ◽  
Two Degrees Of Freedom ◽  
The Mathematical Model

In this paper the servo drive with friction wheels is presented. The servo drive is designed to move the automatic laparoscope tool or laparoscope camera (thereinafter laparoscope sleeve or sleeve) in two Degrees of Freedom (DOF). The description of the drive mechanism, operating principle and mathematical model of this drive is presented. Based on this model, the Control System (CS) has been created, and used to the construction of a simulation model. The simulation illustrates the proper functionality of the mathematical model of the servo drive with the described CS. This paper also presents the servo drive test stand and the most important examination results from the point of view of using them in the cardiac surgery Robin Heart robot.

Research of Simulation Model for Non-Linear Turbine Regulating System

2011 ◽  
Vol 354-355 ◽  
pp. 569-574 ◽  
Author(s):  
Mei Feng Sun ◽  
Rui Lian Wang ◽  
Jia Wang ◽  
Jing Bin Lu
Keyword(s):  
Mathematical Model ◽  
Simulation Model ◽  
Transition Process ◽  
Hydraulic Turbine ◽  
Large Fluctuation ◽  
Transfer Coefficients ◽  
Operating Condition ◽  
Hydro Turbine ◽  
Governing System ◽  
The Mathematical Model

In the large fluctuation transition process of hydropower unit, hydraulic turbine operating condition changes drastically, following the change, hydraulic-turbine transfer coefficients also change drastically, thus the mathematical model of hydro-turbine governing system is nonlinear. This paper establishes simulation model of large fluctuation transition process in SIMULINK software, puts forward a method of establishing simulation model of nonlinear hydro-turbine governing system.

The Simulation of Submarine-Launched Missile Out-Water Movement Based on MATLAB/Simulink

2012 ◽  
Vol 182-183 ◽  
pp. 1328-1332 ◽  
Author(s):  
Yong Qing Lian ◽  
Bing Tian ◽  
Shu Zong Wang
Keyword(s):  
Mathematical Model ◽  
Simulation Model ◽  
Water Movement ◽  
Trajectory Design ◽  
Matlab Simulink ◽  
The Mathematical Model

According to the characteristic of out-water movement of submarine-launched missile, a mathematical model was developed. Then a simulation model was established in Matlab/simulink environment based on the mathematical model, and the simulation was made. The result of the simulation shows that the simulation model can describe the submarine missile out-water movement perfectly, and the study may provide powerful base to the submarine missile trajectory design.

The Design and Simulation Test Research of Electrical Mechanical Brake

2011 ◽  
Vol 421 ◽  
pp. 526-531 ◽  
Author(s):  
Zhu Lin Zhang ◽  
Ru Quan Dai ◽  
Chang Feng Zhou
Keyword(s):  
Mathematical Model ◽  
Simulation Model ◽  
Prototype Model ◽  
Simulation Test ◽  
Vehicle Type ◽  
Adams Software ◽  
Reliable Performance ◽  
Working Principle ◽  
The Mathematical Model ◽  
Reaction Speed

The Electrical Mechanical Brake(EMB) is advanced with plenty functions of ABS, TCS and ESP etc. EMB has a very good development prospect for its good reaction speed and reliable performance as well as easy installation maintenance. It is necessary to study the method of design and simulation of EMB. First, the structure, working principle and the related parts mathematical model of EMB were introduced and the mathematical model of motor was built; second, virtual prototype model of EMB was designed in Pro/e software and developed with constraint and parameter set in adams software; finally, we built the co-simulation model of EMB using adams and Simulink and chosen a certain vehicle type to analyze and verify. The result shows that this method is efficient and feasible.

Simulation Technologies for Tamper System of Asphalt-Paver Based on AMESim

2010 ◽  
Vol 129-131 ◽  
pp. 1098-1103 ◽  
Author(s):  
Tian Hong Luo ◽  
Xin Fu Gan ◽  
Wen Jun Luo
Keyword(s):  
Mathematical Model ◽  
Simulation Model ◽  
Pid Controller ◽  
Dynamic Performance ◽  
Operating Principle ◽  
Simulation Results ◽  
The Stability ◽  
The Mathematical Model

Tamper mechanism is one of the most important parts in all of Asphalt-pavers. In this article, the mathematical model of the tamper system has been established and the stability of the system has been analyzed by using Matlab. According to the operating principle of tamper system of Asphalt-paver, the simulation model of tamper system of Asphalt-paver has been established by using AMESim. The main parameters of the model were set, and then, the simulation results were analyzed, which show that the system is stable and the dynamic performance of system will be improved, when accumulator and PID controller were equipped. Besides, the tamping frequency of hammer is very important to the performance of system. When tamping frequency of hammer over 20HZ, the performance of system will go bad.

scholarly journals Tuned Gyro-Pendulum Stabilizer for Control of Vibrations in Structures

2020 ◽  
Vol 25 (3) ◽  
pp. 355-362
Author(s):  
Faruk Unker
Keyword(s):  
Mathematical Model ◽  
Angular Momentum ◽  
Simulation Model ◽  
Vibration Control ◽  
Natural Frequency ◽  
Control Device ◽  
Dynamic Responses ◽  
Ansys Simulation ◽  
Vibration Responses ◽  
The Mathematical Model

A special combined gyro-pendulum stabilizer (a gyroscope with coupling to a pendulum) mounted on a vibrating mass is considered for investigation of the vibration responses. This paper mainly focuses on the derivation of the frequency equations and on finding the required angular momentum for vibration control of the system. Besides, there is also an ANSYS simulation model of gyro-pendulum, which was built to verify the mathematical model. The dynamic responses of both that obtained from ANSYS simulation and that obtained from numerical solving of a Lagrangian mathematical model are analyzed comparatively. The angular momentum ($Omega I_p$), in relation to the natural frequency ($omega_n$) of the primary mass, shows that this vibration control device is more adaptable than other conventional ones by producing unidirectional thrust along the forcing excitation axis whilst the gyroscope is spinning.

Modeling of the Three-Phase Asynchronous Motor Based on MATLAB/Simulink

2013 ◽  
Vol 313-314 ◽  
pp. 1042-1045 ◽  
Author(s):  
Hai Jun Liu ◽  
Jin Long Wang ◽  
Fang Di Bao
Keyword(s):  
Mathematical Model ◽  
Simulation Model ◽  
Asynchronous Motor ◽  
Quick Response ◽  
Matlab Simulink ◽  
Three Phase ◽  
Response Flexibility ◽  
Frame Transformation ◽  
The Mathematical Model

On the basis of the mathematical model of asynchronous motor combined with two-axis theory of revolving frame transformation simulating model was established under the environment of MATLAB/Simulink. At the same time, by using this simulation model, the analysis of the starting procedure of asynchronous motor was presented to demonstrate its correctness and such merits as quick response, flexibility, convenience, intuition and so on.

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