So, an efficient control scheme for robust speed control of shunt motor is of importance for research. Even though the shunt motors produce constant speed, it is not guaranteed in all cases. The main concern in the DC motors is that whenever the load is changed, the motor speed is also forced to change. Normally, DC-powered electric motors are widely used because of their advantages such as powerful starting torque and easy control structure. Electric motors are of both AC and DC types. Motors are electromechanical devices that find numerous uses in everyday life. But decreasing the series motor speed increases efficiency and reduces running cost. However, increasing the motor speed by decreasing the armature resistance for series dc motors decreases efficiency and also increases running cost, with 0.6 of rated armature resistance used, the efficiency dropped to 83.15% while running cost went up to ₦299.47. Increasing the shunt motor speed by reducing armature resistance (armature control) reduces the running cost but increases the efficiency from its original values to ₦238.70 and 82.89% respectively at 0.6 of the rated armature resistance decreasing the speed of the motor by this means decreases efficiency and increases running cost. For shunt and series motors delivering 11.07Hp and 13.94Hp respectively (at rated speed), the efficiencies were 84.43% and 90.22% with running cost of ₦246.00 and ₦276.00 respectively. Three basic methods are employed in the speed control the quantitative comparison of these methods was investigated in this paper. We at least have to know what kind of signal it puts out though, like a voltage, current, or change of resistance for example, and this would tell us what kind of interface it needs.ĭo you know how to add a simple error amplifier/integrator to your system as the first step in creating a feedback system? Note this could come in the form of additional hardware or additional software.The desired speed of DC motors in most cases is a function of the intending usage, hence, the speed is continually regulated/controlled to suit different usage. Does this sound reasonable for your application? You might find information on your sensor on the web too. You say you dont have the function of the sensor, and now you say it connects to a pid controller.ĭo you mean it WILL connect to the pid controller later once it is designed?Īlso, if you dont have or can find the function of the sensor then you will have to assume some function about the operating point, and that it is reasonably linear about that point. I ask these questions to better understand what you are doing and what you are capable of doing on your own. I ask a question but you dont seem to answer it. We seem to have some kind of communication problem.
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