Potential deadlock, Mechanical Engineering

Assignment Help:

Suppose an interesting situation represented in following figure (b). The Petri net somewhat shows a paradoxical situation. Intuitively we contain in our minds that by raising the initial marking of the Petri net we can raise its chances of it being live. By sum a token to p5 we can consider that t2 can be fired and the system attains a deadlock.

Thus we can interpret that raising the number of resources or the initial markings not all times assists in making the system live.

Furthermore we ignore any potential deadlock by employing additional intermediate places. That type of deadlocks appear while the operation say Oi, j, k is completed in at the machine Mk and Oi,j+1,k1 needs the machine Mk1 and the operation Oi1,j1,k1 is done at machine Mk1 and Oi1, j1+1,k needs machine Mk. The situation is shown in following figure (a) as represented below.

2164_Potential Deadlock.png

Figure: (a): A Potential Deadlock

The operations Oi,j+1,k and Oi1,j1+1,k1 are be reinitiated via swapping the resources Mk and Mk1. In the model represented in figure (a), the model fails to attain this. Hence we employ additional intermediate places to resolve the problem and it is portrayed in following figure (b) below.

2415_Potential Deadlock1.png

Figure: (b): A Solution for Potential Deadlock

The model as represented in figure consequent to having a buffer at machine. Via unloading otherwise via either a human operator or via a robot the part from the machine to the buffer after the operation the machine is available and deadlock does not arise. At all machine, the loading of the part onto the machine before the operation is seemed as the part of the operation. Such procedure avoids an exact type of potential deadlocks.


Related Discussions:- Potential deadlock

Introduction and over view of various manufacturing process, Introduction A...

Introduction And Over View Of Various Manufacturing Process The main aim behind advances in engineering and technology has been to raise the standard of living of man and to ma

Cad-cam data exchange, CAD-CAM Data Exchange: The interface SET transf...

CAD-CAM Data Exchange: The interface SET transferred information on wire-frames, surfaces, B-representation and FEM models as well as technical drawings and scientific data. I

Evaluate hydraulic efficiency, A pelton wheel works at the foot of a dam be...

A pelton wheel works at the foot of a dam because of which the head available at the nozzle is 400m. The nozzle diameter is 160mm and the coefficient of velocity is 0.98. The diame

Give the expression for inductance., Q.   Give the expression for inductan...

Q.   Give the expression for inductance of a ? N ?    turn coil wound on a core having length I cross - sectional area A and magnetic permeability µ. Explain the significance of

Just-in-time, Just-In-Time: This unit begin with the discussion of Jus...

Just-In-Time: This unit begin with the discussion of Just-In-Time strategy. Several terms used in the process are also explained. JIT is an encompassing philosophy considering

Material handling, how the car manufacturing company handle the material

how the car manufacturing company handle the material

Law of Parallelogram of Forces, To finding ? in Law of parallelogarm forces...

To finding ? in Law of parallelogarm forces We take Q sina(Along Vertical Side) & Q cosa(Along Horizontal Side) I didn''t get that point Q sina & Q cosa how it derived? Can you

Evaluate the angle - block impends down the plane, Evaluate the angle - blo...

Evaluate the angle - block impends down the plane: What should be value of the angle shown in the figure so that the motion of the 90N block  impends down the plane? The coe

Cost, why are future costs not always relevant?

why are future costs not always relevant?

Kinematics, derive an expression for range along iclined palne

derive an expression for range along iclined palne

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd