scholarly journals A Robust Aerial Gripper for Passive Grasping and Impulsive Release using Scotch Yoke Mechanism

2021 ◽  
Author(s):  
Rajashekhar V S ◽  
Vibha M R ◽  
Kaushik Das ◽  
Debasish Ghose
Keyword(s):  
Scotch Yoke Mechanism ◽  
Impulsive Release

scholarly journals Impulsive release strategies of sterile mosquitos for optimal control of wild population

2021 ◽  
Vol 15 (1) ◽  
pp. 151-176
Author(s):  
Mingzhan Huang ◽  
Lei You ◽  
Shouzong Liu ◽  
Xinyu Song
Keyword(s):  
Optimal Control ◽  
Wild Population ◽  
Impulsive Release

Analysis of Drive Shaft Speed Variations in a Scotch Yoke Mechanism

1982 ◽  
Vol 104 (1) ◽  
pp. 239-246 ◽  
Author(s):  
J. L. Wiederrich
Keyword(s):  
Practical Importance ◽  
Drive Shaft ◽  
Constant Speed ◽  
Shaft Speed ◽  
Flexible Coupling ◽  
Harmonic Content ◽  
Common Drive ◽  
Scotch Yoke Mechanism

Two analyses are presented for determining the drive shaft speed variations in a scotch yoke mechanism. The first analysis determines the speed variations when the mechanism is rigidly connected to a motor having a quadratic speed versus torque characteristic. The second analysis determines the speed variations when the mechanism is connected to a constant speed source through a flexible coupling. Together these models represent the two most common drive configurations. The results are of practical importance since they can be used in the preliminary calculations necessary in either the design of a main drive or the diagnosis of a drive problem in an existing machine. The methods are also of theoretical importance since they may be extended to the analysis of mechanisms having a greater harmonic content than the simple scotch yoke mechanism.

Recruitment of the barnacle Balanus amphitrite in a tropical estuary: implications of environmental perturbation, reproduction and larval ecology

2005 ◽  
Vol 85 (4) ◽  
pp. 909-920 ◽  
Author(s):  
Dattesh V. Desai ◽  
A.C. Anil
Keyword(s):  
Temporal Variations ◽  
Larval Abundance ◽  
Balanus Amphitrite ◽  
Larval Ecology ◽  
The West ◽  
Environmental Perturbation ◽  
Recruitment Failure ◽  
Acorn Barnacle ◽  
New Recruits ◽  
Impulsive Release

Phytoplankton blooms are known to influence barnacle recruitment and in boreal regions spring blooms work as an important trigger. Close to the west coast of the sub-continent of India, blooms tend to be triggered by breaks in the monsoon and the recurrence of the monsoon after a short break can stress the new recruits. The recruitment of Balanus amphitrite, an acorn barnacle, at Dona Paula Bay at the mouth of Zuari estuary, Goa, India was studied. Observations included variations in recruitment, larval abundance, development and reproduction. Adult conditioning and inter-brood variations were important factors in the larval ecology of this organism. The results indicate that the impulsive release of larvae during breaks between monsoons could be a short-sighted luxury for Balanus amphitrite in these waters. Temporal variations or recruitment failure in such environments can be attributed to inappropriate cue synchronization.

scholarly journals Scotch-Yoke mechanism for a syringe pump - A case study

2016 ◽  
Vol 149 ◽  
pp. 012221 ◽  
Author(s):  
M Pramoth Kumar ◽  
K Akash ◽  
M Venkatesan
Keyword(s):  
Syringe Pump ◽  
Scotch Yoke Mechanism

scholarly journals Impulsive Biological Pest Control Strategies of the Sugarcane Borer

2012 ◽  
Vol 2012 ◽  
pp. 1-14 ◽  
Author(s):  
Marat Rafikov ◽  
Alfredo Del Sole Lordelo ◽  
Elvira Rafikova
Keyword(s):  
Pest Control ◽  
Floquet Theory ◽  
Control Strategies ◽  
Egg Parasitoid ◽  
Asymptotically Stable ◽  
Biological Pest Control ◽  
Globally Asymptotically Stable ◽  
Larval Stages ◽  
Sugarcane Borer ◽  
Impulsive Release

We propose an impulsive biological pest control of the sugarcane borer (Diatraea saccharalis) by its egg parasitoidTrichogramma galloibased on a mathematical model in which the sugarcane borer is represented by the egg and larval stages, and the parasitoid is considered in terms of the parasitized eggs. By using the Floquet theory and the small amplitude perturbation method, we show that there exists a globally asymptotically stable pest-eradication periodic solution when some conditions hold. The numerical simulations show that the impulsive release of parasitoids provides reliable strategies of the biological pest control of the sugarcane borer.

scholarly journals Two-dimensional lubrication analysis and design optimization of a Scotch Yoke engine linear bearing

2006 ◽  
Vol 220 (10) ◽  
pp. 1575-1587 ◽  
Author(s):  
X Wang ◽  
A Subic ◽  
H Watson
Keyword(s):  
Dynamic Testing ◽  
Combustion Engine ◽  
Design Sensitivity ◽  
Two Dimensional ◽  
Test Rig ◽  
Analysis And Design ◽  
Lubricant Flow ◽  
Bearing Assembly ◽  
Bearing Design ◽  
Scotch Yoke Mechanism

Recent study has shown that the application of a Scotch Yoke crank mechanism to a reciprocating internal combustion engine reduces the engine's size and weight and generates sinusoidal piston motion that allows for complete balance of the engine. This paper describes detailed investigation of the performance of a linear bearing assembly, which is one of the key components of the Scotch Yoke mechanism. The investigation starts by solving Reynolds equation for the Scotch Yoke linear bearing. The two-dimensional lubricant flow is numerically simulated and the calculated results are compared with experimental results from a linear bearing test rig. The performance characteristics and a design sensitivity analysis of the bearing are presented. Dynamic testing and analysis of an instrumented linear bearing on a test rig are used to validate the numerical simulation model. The oil supply and lubrication mechanism in the linear bearing are analysed and described in detail. This work aims to provide new insights into Scotch Yoke linear bearing design. In addition, strategies for optimization of the linear bearing are discussed.

DYNAMIC BEHAVIORS OF A KIND OF PREDATOR–PREY SYSTEM WITH IVLEV'S AND BEDDINGTON–DEANGELIS' FUNCTIONAL RESPONSE AND IMPULSIVE RELEASE

2008 ◽  
Vol 08 (04) ◽  
pp. 667-681
Author(s):  
HONGJIAN GUO ◽  
XINYU SONG ◽  
LANSUN CHEN
Keyword(s):  
Periodic Solution ◽  
Numerical Simulations ◽  
Functional Response ◽  
Period Doubling ◽  
Continuous System ◽  
Impulsive System ◽  
Predator Prey ◽  
Impulsive Release ◽  
Predator System ◽  
Bifurcation Chaos

A kind of one-prey two-predator system with Ivlev's and Beddington–DeAngelis' functional response and impulsive release at fixed moments is presented. It is shown that the system has a prey-free periodic solution. By using the Floquet theory and small amplitude perturbation skills, it is proved that the prey-free periodic solution of the system is locally asymptotically stable when the period of impulsive release is less than a critical value. Furthermore, permanence of the system is investigated and the condition of permanence is obtained. Finally, numerical simulations show that the system has complex properties which include periodic solution, period-doubling bifurcation, chaos, chaotic windows, half-period bifurcation. A brief discussion on our results and their relation between the continuous system and the impulsive system are given. The results obtained in this paper are confirmed by numerical simulations.

scholarly journals Design and Analysis of Multipurpose Agriculture Vehicle

2021 ◽  
pp. 17-30
Author(s):  
Dr. B. Vinoth ◽  
M. Vinothpandiyan ◽  
R. Sethumadhavan ◽  
C. Pavithran
Keyword(s):  
Machine Design ◽  
Agricultural Vehicle ◽  
Seed Sowing ◽  
Agricultural Operations ◽  
Scotch Yoke Mechanism ◽  
Made In

The main aim of the project is to develop multipurpose agricultural vehicle, for performing major agricultural operations like ploughing, seeding, harvesting. The modification includes fabricating a vehicle which is small, compact in size. The project is about a machine design which makes cultivation much simpler. The design of the chassis of the vehicle is made in such a way that it is suitable for the operations. The design for automatic seed sowing equipment is made. The plough is designed and modified the currently available plough tool in such a way that it with stand the load. The harvester (cutter) is designed and working by scotch yoke mechanism.

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