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We manufacture, export and supply DC SPEED CONTROL SYSTEM in Roorkee, Uttarakhand, India.
* Closed loop motor speed control with eddy current brake
* Compact system-no mechanical hassles
* Opto electronic speed sensor
* Digital display of speed on the panel
Accurate speed control is a requirement in many industrial and process control systems. The main characteristics of such a system are its steady state error and disturbance rejection properties. Speed control of a d.c. motor is also one of the basic systems covered in a first course on automatic control system. The present unit, built around a small permanent magnet d.c. motor, is designed to bring out the salient features of such a system. Facilities are available to directly measure the principal performance factors of the speed control system, viz., steady state error and load disturbance rejection, as a function of the forward path gain. In addition, the experimental work involves the determination of the motor transfer function and the characteristics of the tachogenerator.
An important feature of the unit is the built-in absolute speed measurement through optical pick-up from a slotted disk followed by a frequency counter. The 4-digit speed display is therefore completely independent of the tachogenerator characteristics. The high accuracy of speed reading is due to a built-in crystal oscillator. Another interesting design feature is the use of an electronic tachogenerator- a frequency to voltage.