Potentiometric Error Detector

We offer Potentiometric Error Detector useful for control labs. All feedback control systems operate from the error signal which is generated by a comparison of the reference and the output. Error detectors perform the crucial task of comparing the reference and output signals. The present set-up is designed to study the important characteristics of a 2-potentiometer angular position error detector. These include
(i) linearity,
(ii) sensitivity and
(iii) maximum angle of rotation.
Good quality wire wound servo potentiometers with full 360° rotation have been used for this purpose. Accurately marked dials with least count of 1° are fixed on the shafts for position indication. The error voltage is read on a built-in 3½ digit DVM. An I.C. regulated internal reference voltage is available for d.c. studies. When used with an a.c. reference, the unit also demonstrates the phase reversal of the error signal which is important in applications involving a 2-phase servomotor as actuator.
Highlights
High quality servo potentiometers
360° Mechanical, 355° Electrical span
DC and AC operation
3½ Digital Panel Meter for all measurements
>>Experiments
Linearity study of the error detector
Determination of error detector gain
Use of a.c. supply for the error detector-introduction to the phase reversal of error signal
>>Features and Specifications
High quality servo-potentiometers of 360° shaft rotation
Requires an external CRO for a.c. studies
Built-in signal and power sources
3½ digit DVM for measurements
The experiment is complete in all respect, except a CRO.