Kinematic Design of Mechanisms for the Control of an Oscillating Wing

2007 ◽  
Author(s):  
Louis-Alexis Allen Demers ◽  
Cle´ment Gosselin
Keyword(s):  
Kinetic Energy ◽  
Mechanical System ◽  
Electric Power ◽  
Additional Function ◽  
Kinematic Design

This work is part of a project which aims at the development of underwater generators using oscillating wings. One of the important challenges in the design of a system collecting the kinetic energy of a fluid is the transformation of this energy into electric power [1]. Since it is not possible to pass directly from the movement of a fluid to electric power, it is necessary to conceive an intermediate mechanical system. Its function is to convert the kinetic energy of the fluid into kinetic energy of a mechanism capable of converting kinetic energy into electric power. In this work, the mechanical system also has an additional function, i.e., to guide the orientation of the blades (wings) throughout the cycle of movement in order to maximize the efficiency.

Ionic Wind Application to Vortex Ring Generator and its Transportation Efficiency

2019 ◽  
Author(s):  
Kengo Fukunaga ◽  
Masayoshi Satake ◽  
Noboru Maeda ◽  
Kazushi Shikata ◽  
Tomohisa Ezaka
Keyword(s):  
Kinetic Energy ◽  
Mechanical System ◽  
Electric Power ◽  
Vortex Ring ◽  
Energy Conversion Efficiency ◽  
Target Distance ◽  
Vortex Rings ◽  
Experimental Measurements ◽  
Ionic Wind ◽  
External Turbulence

Abstract In this study, ionic wind generated in corona discharge is focused for producing an air flow without having mechanical actuators. First, the kinetic energy conversion efficiency to ionic wind from electric power is experimentally estimated to be 0.32%. Then, it is confirmed that intermittent blows of ionic wind enable to produce vortex rings without using mechanical system. We adopt novel sub-chamber structure to avoid the concentration of the substance in a vortex ring low, so that the substance concentration transported to the target distance of 200 mm increases by 9%. As an application, the efficiency for moisture transportation is evaluated through experimental measurements. As a result, it is shown that the substance (moisture) can be transported at an efficiency of about 85% to target distance of 200 mm under conditions where the influence of external turbulence is small.

Study on Boosting Curve for Electric Power Steering System Based on ADAMS

2010 ◽  
Vol 97-101 ◽  
pp. 3308-3313 ◽  
Author(s):  
Hao Chen ◽  
Ya Li Yang ◽  
Li Hua Chen
Keyword(s):  
Mechanical System ◽  
Electric Power ◽  
Steering System ◽  
Electric Power Steering ◽  
Power Steering System ◽  
Electric System ◽  
Power Steering ◽  
Straight Line ◽  
Electric Power Steering System ◽  
Steering Effort

Electric Power Steering (EPS) is a full electric system, which reduces the amount of steering effort by directly applying the output from an electric motor to the steering system. This research aims at developing EPS boost curve embody into the assist characteristics, improving steer portability and stability. A model for the EPS system has been established, including full vehicle mechanical system, EPS mechanical system, and EPS electric control system. Based on this model, a straight line boost curve was designed and evaluated in this environment to improve the performance of EPS system. Results showed that EPS system with the designed boost curve improved light steering feeling and increased vehicle’s steering stability, and can meet the requirements of steering performance.

Magnetic accumulation of kinetic energy from a reciprocating mechanical system for a dynamic behaviour improvement

2019 ◽  
Vol 451 ◽  
pp. 138-146
Author(s):  
Jan Valtera ◽  
Jana Svobodová ◽  
Michal Strnad ◽  
Petr Žabka ◽  
Vítězslav Kubeš
Keyword(s):  
Kinetic Energy ◽  
Mechanical System ◽  
Dynamic Behaviour

scholarly journals Evaluating the Effectiveness of New and Old Kinetic Energy Conversion from an Electric Power Economics Perspective: Evidence on the Shandong Province of China

Energies ◽  
2019 ◽  
Vol 12 (6) ◽  
pp. 1174 ◽  
Author(s):  
Wanlei Xue ◽  
Bingkang Li ◽  
Yongqi Yang ◽  
Huiru Zhao ◽  
Nan Xu
Keyword(s):  
Economic Growth ◽  
Economic Development ◽  
Kinetic Energy ◽  
Energy Conversion ◽  
Electric Power ◽  
Evaluation Model ◽  
Three Dimensions ◽  
Effectiveness Evaluation ◽  
Close Attention

This paper proposes a hybrid model for evaluating the effectiveness of new and old kinetic energy conversion (NOKEC), China’s major strategic move aiming to transform the mode of economic growth and improvie the quality of economic development. Considering the goals of NOKEC and the supporting roles of power industry to NOKEC, this paper constructs an index system for NOKEC effectiveness evaluation from an electric power economics perspective, involving three dimensions and 17 secondary indicators. Furthermore, a hybrid evaluation model based on DEMATEL-ANP and DQ-GRA techniques is developed to accomplish the evaluation of Shandong’s NOKEC effectiveness. The results show that Shandong’s NOKEC effectiveness increased from 2015–2017, indicating that Shandong’s NOKEC policies have achieved remarkable results. According to the evaluation results, this paper puts forward the indicators that should be paid close attention to and the following work priorities in Shandong’s future NOKEC process, which has certain practical value for the promotion of Shandong’s NOKEC. In addition, the evaluation model proposed in this paper considers the interrelationships between indicators and overcomes the shortcomings of traditional GRA, showing good applicability to similar effectiveness evaluation issues. Finally, the limitations and universality of the model are discussed and the improvement direction is put forward.

DISPLACEMENT-IMPULSE COMPLEMENTARY IN ANALYTICAL MECHANICS

1994 ◽  
Vol 18 (3) ◽  
pp. 225-247
Author(s):  
F.P.J. Rimrott ◽  
B. Tabarrok ◽  
J. Altenbach
Keyword(s):  
Kinetic Energy ◽  
Potential Energy ◽  
Mechanical System ◽  
Equations Of Motion ◽  
Linear Momentum ◽  
Analytical Mechanics ◽  
Translatory Motion ◽  
Generalized Displacements ◽  
Energy Aspects

Based on Euler’s linear momentum law, equations of motion of a mechanical system, consisting of a collection of point masses and force elements, such as springs or dashpots, are derived using generalized impulses, rather than generalized displacements, as coordinates. There are limitations to this approach involving both potential energy aspects and kinetic energy aspects. The present paper if of introductory nature and restricted to systems with translatory motion.

X.—An Electric Clock with Detached Pendulum and Continuous Motion

1924 ◽  
Vol 43 ◽  
pp. 154-159
Author(s):  
Alex. Steuart
Keyword(s):  
Kinetic Energy ◽  
Electric Power ◽  
Electric Motor ◽  
Constant Force ◽  
Continuous Motion ◽  
Worm Gearing ◽  
Energy Application

A clock pendulum and movement have been designed which are never actually connected either mechanically, electrically, or magnetically, yet the movement drives the pendulum and the pendulum controls the movement. The usual “escapement” has been eliminated.The clock has been made and tested; first in the form of a regulator, and then in the form of a heavy turret clock with triple worm gearing to the hands.The power is derived from an electric motor in continuous motion; this raises a gravity arm which, in descending, drives the pendulum with a constant force. The motor also drives the clock hands, makes contacts to drive other dials, and may drive telescopes, chronograph drums, etc. After acting on the pendulum the gravity arm is arrested by a stop, and electric power passes to the motor while arm and stop are in contact. Current is interrupted when the motion of the motor raises the gravity arm. The speed of the motor is governed by the time of contact, but the motion of the motor is maintained between the periods of contact by a reduced current and by kinetic energy. Application has been made for a patent.

scholarly journals Improvements in Bidirectional Power-Flow Balancing and Electric Power Quality of a Microgrid with Unbalanced Distributed Generators and Loads by Using Shunt Compensators

Energies ◽  
2018 ◽  
Vol 11 (12) ◽  
pp. 3305 ◽  
Author(s):  
Wei-Neng Chang ◽  
Chia-Min Chang ◽  
Shao-Kang Yen
Keyword(s):  
Electric Power ◽  
Power Quality ◽  
Power Flow ◽  
Voltage Regulation ◽  
Active Filters ◽  
Additional Function ◽  
Distributed Generators ◽  
Three Phase ◽  
Electric Power Quality ◽  
Bidirectional Power Flow

Improper connections of unbalanced distributed generators (DGs) and loads in a three-phase microgrid cause unbalanced and bidirectional power flow problems. The unbalanced DGs and loads may also aggravate the electric power quality (EPQ), such as voltage regulation, power factor, and unbalanced current and voltage. This increases the difficulty of operation in a microgrid. In this study, a three-phase, delta-connected, shunt-type universal compensator was employed for achieving the bidirectional power-flow balancing and improving the EPQ of a three-phase, distribution-level microgrid with unbalanced DGs and loads. A feedforward compensation scheme was derived for the compensator by using the symmetrical components method. In practical applications, the universal compensator can be implemented as static var compensators (SVCs), static synchronous compensators (STATCOMs), or an additional function of active filters. With the on-line compensation of the proposed compensator, the bidirectional power-flow balancing and EPQ improvement in the microgrid were achieved. A demonstration system was proposed to present the effectiveness of the compensator.

A Device for Converting Kinetic Energy of Press Into Electric Power as a Means of Energy Saving

2019 ◽  
Vol 36 (1) ◽  
pp. 105-110 ◽  
Author(s):  
Shchasiana Arhun ◽  
Andrii Hnatov ◽  
Oleksandr Dziubenko ◽  
Svitlana Ponikarovska
Keyword(s):  
Kinetic Energy ◽  
Energy Saving ◽  
Electric Power

Kinetic energy at collision of two automobiles

2021 ◽  
pp. 108-110
Author(s):  
Ригина Элифхановна Агаханова ◽  
Keyword(s):  
Kinetic Energy ◽  
Mechanical System ◽  
Dynamic Characteristic ◽  
Elastic Collision ◽  
Inelastic Collisions ◽  
Kinetic Moment ◽  
Shock Pulses

At collision of two automobiles under the influence of shock pulses the change of their speed occurs. The dynamic characteristic of movement of mechanical system consisting of two automobiles includes traffic, kinetic moment regarding motionless centre and kinetic energy. On the basis of dynamics theorems the author has determined a loss of kinetic energy of central-straight collision of two automobiles. The paper considers specific cases — elastic and absolutely inelastic collisions. It is established that at elastic collision the kinetic energy decreases by the amount of kinetic energy of lost velocities with amendment that includes a coefficient of recovery at collision.

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