Low cost automation
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Transcript of Low cost automation
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Ishwar V. Bhoge.
Parag J. Tarwadi.
Presented by :-
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What is Low Cost Automation ?
It is a technology that creates some degree of automation
around the existing equipment, tool, methods, and people, using
mostly standard components available in the market.
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Useful in activity releated to discrete manufacturing.Wide
range of activity such as
Loading
Feeding
Clamping
Machining
Welding
Forming
Gauging
Assembly and Packing can be subjected to LCA system
adoption.
Useful in processing industries for manufacturing chemicals,
oils, or pharmaceuticals.
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The overall
methodology used for
development of LCA
For developing LCA a
wide variety of systems
are available.
Important note is that
stage 1 & 2
System synthesis
Cost estimation
Useful for stage 3
System implementation
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Well synthesised through emphasis on the guiding principles
of standardization, simplicity, reusability, flexibility and
maintainability.
Long term benefits must be considerable.
System stability condition.
Playback period and system up gradation.
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LCA systems are basically
Mechanical System :-
Rugged, Simple and Cheap.
Made up of elements like Cams, Gears, Mechanisms with
linkages, Indexing devices, Feeding devices etc.
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Pneumatic Systems:-
Operate using compressed air as the activating power source.
Pressure range of 4 to 8 bar.
The system here is very simple and has no moving parts.
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Hydraulic Systems :-
Costlier than pneumatic systems.
Very wild field application.
They are used virtually in every industry, such as:-
•Die casting machines in casting process.
•Presses for heavy duty metal forming processes
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Electric System:-
Consist of electric motors or electro-magnets for
actuation (AD, DC, servo, stepper etc.)
The electric circuit consists of two parts:
(A) The actuator part which consists of the electromagnets,
motors, brakes etc. along with safety devices like
overload protection,
(B) The control part consisting of activating devices like
start, stop push buttons, limit switches, relays, timers
etc.
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Hybrid System :-
More than one type of system is used and interfaced
appropriately with another so that the advantages of both
are used, while ensuring that the disadvantages are not
detrimental to the functional requirements.
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Hybrid System :-
Hydropneumatic circuit.
Electro-pneumatic Device.
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Use of PLC (Programmable Logic Control) can bereplace h hardwired ladder logic.
Use of PC can improved capabilities of PLC by storingdata & using as per our requirement.
No hardware assembly is required, assembly time islow.
System becomes very compact, no hardware elementsconnected through wires.
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Micro-controller Based Low Cost Automation :-
Micro-computer based design brings flexibility, re-configurability, compactness and economy to an automationsystem.
Processing power is available through micro-controllers atvery reasonable prices hence Low Cost.
Low cost electro-mechanical automation system.
High technology, low cost automation implemented withMechanical systems controlled by microcontroller is indeed forbig growth and wide applications in the Indian Industry.
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The need to have Good Manufacturing Practices (GMP)
in place in the drug and pharmaceutical sector.
Batch process plants are not fully geared to adapt to
GMP norms that are being laid down.
There are many difficulties in implementation of GMP
in the batch process industries. Because of their ledge of
the process characteristics.
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Batch Process Monitoring :
Low cost data acquisition systems can be used to monitor
some of the key process variables like temperature,
pressure, pH, conductivity etc.
Multivariate statistical analysis tools like Principal
Component Analysis (PCA), and Multi-way PCA etc., can
be used for such inferential measurements to provide the
soft sensors for tracking the product quality.
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Batch process Control :
The non linear and dynamic nature of batch process operation
makes the batch process control problem rather complex.
Batch distillation is another operation used widely in the
process industry.
Batch process data can be used to develop tendency models
Through modeling one can develop optimal operational
policies permitting higher recovery of costly products, as well
as recycle policies which minimize reprocessing cost.
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Batch Process Management :
Higher productivity, better capacity utilization, energy
conservation and flexible manufacturing, batch process
planning through formal optimization tools help in
evolving production plans to meet set operational goal.
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Troubleshooting and for making modification isavoided.
Use manual participation and hence take more timeto learn, because changing form one design to another,the skill is inbuilt into the program.
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One has to understand the need to overcome “the
learning curve” problem.
Productivity may even decrease when a person is in the
learning phase.
LCA is a technology that promises to be very useful for
any kind of manufacturing organization.
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ANY QURIES ???