106 Elevator Group Supervisory Control by Referring Future Trajectories of Cars for Equal Time-Interval Operation : Future Reference-Trajectory Control for Cars

2006 ◽  
Vol 2005 (0) ◽  
pp. 21-24 ◽  
Author(s):  
Toshifumi YOSHIKAWA ◽  
Shunichi TANAE ◽  
Takamichi HOSHINO ◽  
Satoru TORIYABE ◽  
Masaaki TAMADA
Keyword(s):  
Supervisory Control ◽  
Trajectory Control ◽  
Time Interval ◽  
Reference Trajectory ◽  
Equal Time ◽  
Interval Operation ◽  
Equal Time Interval ◽  
Future Reference

scholarly journals ОЦІНКА БАКТЕРИЦИДНИХ ВЛАСТИВОСТЕЙ КОМПЛЕКСНОГО МЕТАЛОМІСТКОГО ДЕЗІНФЕКТАНТУ

2012 ◽  
pp. 112-114
Author(s):  
О. І. Шкромада
Keyword(s):  
Time Interval ◽  
Bactericidal Action ◽  
Equivalent Temperature ◽  
Equal Time ◽  
Concentration Of Solutions ◽  
Equal Time Interval

Наведені дані за результатами досліджень бак-терицидної дії комплексного металомісткого дез-інфектанту. Для цього визначали фенольний кое-фіцієнт, який виражає відношення концентраціїрозчинів досліджуваної речовини до концентраціїфенолу, що спричиняють у рівний проміжок часуза однакової температури рівнозначний темпера-турний дезінфікуючий ефект. Також визначалибілковий індекс, показник зниження активностідезінфікуючого засобу в присутності білків. У ре-зультаті досліджень встановлено, що бактери-цидна дія комплексного металомісткого дезінфе-ктанту (КМД) сильніша за бактерицидну дію кар-болової кислоти в 157,98 разу. КМД може прояв-ляти бактерицидну дію на оброблюваних поверх-нях навіть за контакту з білковими субстанціями,хоча в такому випадку його ефективність зни-зиться в 2,92 разу, що враховано при встановленніефективних концентрацій робочих розчинів КМД. The data on research of bactericidal action of complex metallicdisinfectant are given in article. Phenolic factor which expresses therelation of concentration of solutions of investigated substance toconcentration of phenol that defines in an equal time interval atidentical temperature equivalent temperature disinfectant effect wasdefined for this purpose. Albuminous index, an indicator ofdecrease in activity of a disinfectant in the presence of fiber wasalso defined. As a result of researches it is established that,bactericidal action complex metallic disinfectant is stronger thanbactericidal action phenylic acid in 157,98 times. KMD can showbactericidal action on processed surfaces during contact withalbuminous substances, but in that case its efficiency decreases in2,92 times. That is considered at installation of effectiveconcentration of working solutions KMD.

Study on Deformation Prediction of the Tunnel Surrounding Rocks Based on Non-Equal Time-Interval Grey Model

2014 ◽  
Vol 580-583 ◽  
pp. 1143-1147
Author(s):  
Peng Fei Geng ◽  
Chang Min Yang ◽  
Wei Dong Guo ◽  
Peng Wang
Keyword(s):  
Surrounding Rock ◽  
Numerical Results ◽  
Grey Model ◽  
Time Interval ◽  
Tunnel Engineering ◽  
Deformation Prediction ◽  
Equal Time ◽  
Equal Time Interval

The thesis develops an non-equal time-interval GM (1, 1) model to forecast the deformation of the tunnel surrounding rock. A program is compiled via MATLAB 7.1 platform to implement the model. With the assistance of the program and the monitoring record of the convergence, the deformation is predicted and the error is analyzed. The numerical results indicate that the non-equal time-interval GM (1, 1) model does well in predicting the deformation of tunnel surrounding rock and is worthy to put into use in tunnel engineering.

scholarly journals Evaluation of Optimal Occasional Tilt on Photovoltaic Power Plant Energy Efficiency and Land Use Requirements, Iran

2021 ◽  
Vol 13 (18) ◽  
pp. 10213
Author(s):  
Amirhossein Fathi ◽  
Masoomeh Bararzadeh Ledari ◽  
Yadollah Saboohi
Keyword(s):  
Power Plant ◽  
Solar Radiation ◽  
Solar Energy ◽  
Orientation Angle ◽  
Optimum Operating ◽  
Time Interval ◽  
Time Intervals ◽  
Optimum Time ◽  
Equal Time ◽  
Geographical Regions

The paper studies the optimum panel horizontal orientation angle toward the Sun and the optimum time interval of the panel’s movement. The optimum time intervals or panel movement can change the rate of input energy to the panel surface in Iran. For this purpose, a neural network has been trained to estimate the intensity of solar radiation in Iran. After model validation, the intensity of solar radiation has been estimated by selecting adequate geographical regions. Based on the intensity of sunlight, Iran has been divided into ten regions. In these regions, 40 cities have been randomly selected to study the effect of the panel’s angle variations within appropriate time intervals, as well as equal time intervals. The results show that the choice of the mounting system with the possibility of five angles’ implementation can increase the amount of solar energy between 3.9% and 7.4%. Compared to this number of angles at the equal time intervals, the amount of incoming solar energy has increased by 3% to 7%. In the first and second cases, the area of the power plant increases by about 12% to 24% compared to the yearly optimum tilt angle. Moreover, the amount of radiation incoming to the panel with the optimum operating angle is in alignment with the results of PVsyst software.

Maneuvering Support System for an Amphibian Vehicle – Warning Display to Prevent Rough Maneuvers –

2017 ◽  
Vol 29 (3) ◽  
pp. 591-601
Author(s):  
Ryota Hayashi ◽  
◽  
Genki Matsuyama ◽  
Hisanori Amano ◽  
Hitomu Saiki ◽  
...  
Keyword(s):  
Feedback Control ◽  
Support System ◽  
State Feedback ◽  
Trajectory Control ◽  
State Feedback Control ◽  
Control Law ◽  
Reference Trajectory ◽  
Display System ◽  
Additional Reference ◽  
Nonlinear State

[abstFig src='/00290003/14.jpg' width='300' text='Amphibian vehicle maneuvering simulator' ] This study proposes a maneuvering support system for an amphibian vehicle by applying a nonlinear state feedback control law for vehicle trajectory control. We consider that the vehicle should not drift sideways for good driving performance. To derive a nonlinear state feedback control law, we have defined ‘Maneuvering Trajectory’ as an additional reference trajectory that is generated by the driver’s maneuver. We have constructed a Lyapunov-like function for the trajectory control system. In this paper, we construct a vehicle-maneuvering simulator and set a clockwise circular reference trajectory. The efficiency of the proposed maneuvering support system is shown in the maneuvering simulations. We consider the case where the propulsive forces of the vehicle have limited influence on maneuverability. A new warning display system is proposed so that the driver can recognize if his or her maneuver is not suitable. Then, we examine the feasibility of the proposed warning display system through several simulations.

Analysis of iterative learning control for an oscillating control system with two delays

2017 ◽  
Vol 40 (6) ◽  
pp. 1757-1765 ◽  
Author(s):  
Chengbin Liang ◽  
JinRong Wang
Keyword(s):  
Control System ◽  
Iterative Learning Control ◽  
Learning Control ◽  
Iterative Learning ◽  
Time Interval ◽  
Reference Trajectory ◽  
Output State ◽  
Control Functions ◽  
Input Control ◽  
Two Delays

In order to track the desired reference trajectory from an oscillating control system with two delays in a finite time interval, we design iterative learning control updating laws to generate a sequence of input control functions such that the error between the output and the desired reference trajectories tends to zero via a suitable norm in the sense of uniform convergence. Here, we adopt a delayed matrix function to characterize the output state, which can be easily solved in the simulation. As a result, convergence analysis results are given. Finally, simulation results are provided to illustrate the effectiveness of the proposed controllers.

scholarly journals Trajectory encounter volume as a diagnostic of mixing potential in fluid flows

2017 ◽  
Vol 24 (2) ◽  
pp. 189-202 ◽  
Author(s):  
Irina I. Rypina ◽  
Lawrence J. Pratt
Keyword(s):  
Gulf Stream ◽  
Duffing Oscillator ◽  
Fluid Flows ◽  
Time Interval ◽  
Reference Trajectory ◽  
Strain Rates ◽  
Finite Time Interval ◽  
Linear Strain ◽  
Linear Shear ◽  
Tracer Distribution

Abstract. Fluid parcels can exchange water properties when coming into contact with each other, leading to mixing. The trajectory encounter mass and a related simplified quantity, the encounter volume, are introduced as a measure of the mixing potential of a flow. The encounter volume quantifies the volume of fluid that passes close to a reference trajectory over a finite time interval. Regions characterized by a low encounter volume, such as the cores of coherent eddies, have a low mixing potential, whereas turbulent or chaotic regions characterized by a large encounter volume have a high mixing potential. The encounter volume diagnostic is used to characterize the mixing potential in three flows of increasing complexity: the Duffing oscillator, the Bickley jet and the altimetry-based velocity in the Gulf Stream extension region. An additional example is presented in which the encounter volume is combined with the u∗ approach of Pratt et al. (2016) to characterize the mixing potential for a specific tracer distribution in the Bickley jet flow. Analytical relationships are derived that connect the encounter volume to the shear and strain rates for linear shear and linear strain flows, respectively. It is shown that in both flows the encounter volume is proportional to time.

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