Answer / anurag,e&a ispat ind. ltd.

in manual control system all the controlling parameter have
been controlled by operatorbut automatic control system all
parameter are controlled by automatic control system by
using plc,dcs @scada system.

Answer / harsh zala

In manual control system, operater has to calculate the
manipulated variable(MV) manually..like we r controlling a
speed of two wheeler by accelerating it by our hand...

While in auotmatic control system u need to give set point
(SP) and acoordingly we programmed the system it will try
to reach the desired output(sp) automatically.uit does not
need manual calulations.as it is already programmed.

Answer / elibariki

automatic control system is the closed loop system that requires no operator e.g Automatic furnace temperature system
Manual system is the system that requires an operator

Answer / dibyalochan sahoo

In automatic control system sensor is used to reduce the error.in manual control system user is responsible to reduce by observeving output.it is a close loop control system .in place of sensor here human is present.an open loop control system with human involvement called manual control system.

Answer / uday

Human operated system is called manual control system.like speed control of vehicles.it's operation based on human sense.
Automatic control system have sensor mechanism, sense the actual condition and send feedback to controller.

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