ลดความเครียด

ลดความเครียด

ผลลัพธ์ (อังกฤษ) 1:

Reduce stress

ผลลัพธ์ (อังกฤษ) 2:

Stress Reduction

ผลลัพธ์ (อังกฤษ) 3:

Abstract - Fast speed measurement and control signals are.Required for feedback control applications. In the proposed.Technique a rotating, magnetic field (RMF) is used to measure.The speed and the variation in speed with high accuracy. In.Addition to a, 400 Hz three-phase input voltage circuit and an.Output zero-crossing detector circuit a contact-type, synchro is.Used as a primary transducer. A balanced three-phase AC voltage.Is applied to the stator windings of synchro which produces, an.RMF. The frequency of electromotive force induced in the rotor.Circuit of synchro depends upon the speed of rotor or rotating.Member. The RMF revolves at a speed of 24 000 R / min which,,Is purposely kept very high in comparison with the speed of the.Rotor or rotating member. Thus the measurement, becomes very.Fast and the change in speed is sensed within 2.5 ms. The time.Response of the proposed scheme is also compared with the time.Response of a DC tachogenerator. A digital storage oscilloscope.And a microcontroller are used for measurement of the output.The 16-b digital output of the microcontroller is made available.As a feedback signal for control applications. The high accuracy.Of measurement of the proposed technique is also successfully.Used for calibration of different contact - and noncontact-type.Tachometers.Index Terms - Calibration of tachometer rotating magnetic,,Field speed measurement, speed transducer tachometer,,,