Explain various types of the Controls?

Types of the Controls
1. Direct controls

a. Called as the direct controls as the people here get so well tuned to the job that there are very less chances for the deviations to take place.
b. Also called as the preventive controls.
c. Aims at the saving on the cost of the control.
d. Also aims at the zero defects from the initiation.
e. Great emphasis is given on the prevention of the need of the controls; to build the systems, the procedures, the culture, the discipline etc.
f. But with time these types of the controls also get older and outdated.
g. For the proper functioning of the direct controls, assistance of the indirect controls is very much needed.

2. Feed forward controls

a. Whenever a process is performed, two factors are very critical namely the inputs and the outputs.
b. Here we take into account the various deficiencies of a process well in advance, so that these can be cured or controlled at the initial stages.
c. The shape of the feedback controls is taken by almost all the controls.
d. It is advised by the various experts to have the both feed forward and the feed backward controls on the process.
e. Helps in the establishment of a right direction and control right from the beginning.

3. Feed backward controls

a. Here the controls are put at the output end as the deviations that occur are not known to us till the moment of the output.
b. Very heavy cost is involved.
c. Results into the customer dissatisfaction.

4. Real time controls

a. Involve the instantaneous feedback almost in the real time, (real time can defined as the time when both the creation of a report and its transmission is done almost with no gap that one can almost read it at the time it is being sent) for e.g. the fax or the telephone.

5. Automation in the controls

a. Here, mainly for the development of the control systems involving very less human power, building of the instrumentation takes place.
b. Computers are used for the feedback systems and for the automatic corrections.