Sensor and control result

Control is used in everyday practice to facilitate and enhance our activity. We are therefore always interested also achieved the result of control, which assesses the various criteria of quality control. High attention is paid to the actual regulators and their parameters. In the control must be closed control loop and his feedback may have to control result a similar impact as the controller itself. Sensor, or other members of the measuring chain, which forms the feedback often has decisive effect on the final quality control, its accuracy. Imperfect sensor accuracy is reflected in the result of control. This paper tries to show the relationship between measurement uncertainty in the feedback and permanent control error.