General resource models, Mechanical Engineering

Assignment Help:

General Resource Models

In  computer  controlled scheduling,    material,  machine handling  equipment,  tooling  and  buffer  space  should  be comprised. The explicit consideration of these resources conclude in additional decisions to be made  in  the  schedule  and  accordingly  the  problem  difficulty  is  raised.  For illustration,  the  general  thing  in  computer  controlled  systems  is  the  simultaneous need of two or more resources for the execution of a particular activity. An instance is the task of loading a part onto a machine by using a robot. At several point of time in loading operation, the robot should hold the part in position for the machine to secure the part in its machining location. Obviously, the robot and the machine are utilized simultaneously in this operation. In case of tooling, the problem is additionally difficult via the fact that tools may be shared among various machines. Thus, in making sequencing decisions one must schedule both tool movement and part movement; that is tools have part attributes as they will also consume material handling resources.

Assumption A1, A2 and A4 that are mentioned in earlier section should be relaxed to capture the nature of computer controlled scheduling. Mostly A1 is relaxed as if several operators need extra than one resource at the time, then Mr ∩ Ms ≥ 1.  A 2 relaxed since when the loading and unloading are disaggregated from the processing time, the result is that more than one operation in a job requires the same machine, or ¦jk  ∩ Mr¦≥ 1  and A 4 is relaxed since other resources as like: material handlers must be considered. One time the assumption stated above are relaxed, the machine scheduling problem becomes an extra usual Resource-Constrained Scheduling Problem (RCSP).

 

 


Related Discussions:- General resource models

Determine the initial radius of curvature, Determine the initial radius of ...

Determine the initial radius of curvature:  A carriage spring, defiantly loaded and simply supported at its ends, has 12 steel plates each 60 mm wide by 6 mm thick. If the lon

Semi-active suspension systems, With an open loop system, the only way to m...

With an open loop system, the only way to modify the behaviour of the system is to modify the values of physical parameters in the system. For instance we can modify the damping co

Die press assembly drawing, Die Press Assembly Drawing The objective of...

Die Press Assembly Drawing The objective of this assignment is to demonstrate the following concepts of design. • Extrude • Revolve • Fillet • Dimensioning • Tolerance • Bas

Angle of repose, Angle of Repose(α): It is the maximum angle of inclin...

Angle of Repose(α): It is the maximum angle of inclined plane on which body tends to move down the plane because of its own weight. Consider the equilibrium of body when body

Determine the velocity and acceleration of a particle, Determine the veloci...

Determine the velocity and acceleration of a particle: The motion of a particle is determined by the equation s = t 4  - 3 t 3  + 2 t 2  - 8 , where s is in metres and t in se

Basic requirements of a control scheme of steam generators, Q. Basic requir...

Q. Basic requirements of a control scheme of steam generators? The basic requirements of a control scheme are: • Master steam pressure control by feedback to the water flow

Constant pressure cycle, Diesel (Constant Pressure Cycle): 5-1...

Diesel (Constant Pressure Cycle): 5-1 Suction Stroke at constant pressure 1-2 Adiabatic Compression 2-3 Heat Addition at constant pressure 3-4 Adiabatic Expan

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