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The objective of this lab is to design a fuzzy logic motor controller. The desired speed is received from a user interface (either a keypad or the SCI). You should use a variable-speed DC motor, playing careful attention to the voltage and current specifications of the motor. Attach onto the motor shaft a circular disk, and paint contrast lines in a circular pattern around the disk. Mount a reflectance optical sensor, such as the QRB1113 or QRB1134, pointing toward the disk, and interface it so that there is a digital square wave with a frequency related to the speed of the shaft. Build the state estimator that measures both shaft speed and acceleration in real time. Measure the current required to spin the motor at full speed. Design a PWM actuator so the software can control the delivered power to the motor. It is OK if the actuator precision is greater than the 8-bit fuzzy logic numbers. Make sure the snubber diode can handle the back EMF generated when the motor is switched off. Use the PWM in open-loop fashion and the state estimator to generate a DC response curve like that shown in Figure 13.24. Furthermore, you should measure the time-constant of the physical plant (time to 0.69 of final response after a step change in input). Design and implement an initial fuzzy logic controller and add debugging instruments to measure fuzzy variables in real time. Run through an experimental fine-tuning, optimizing the fuzzy parameters in order to minimize both controller error and response time.
Figure 13.24
Starting from Ampere's law, calculate the self inductance of the coil, assuming that the cross sectional area of the coil is sufficiently small that we can assume that the magnetic field has constant strength inside the coil.
A 20kW, 250V, self-excited dc shunt generator is driven at its rated speed of 1200rpm and it is delivering rated power at rated terminal voltage. Its armature-circuit resistance is 0.15-ohm, and the field current is 2 A.
Three identical single phase transformers, each rated at 100KVA, 7KV/3.5KV, are connected as a three phase transformer bank. The high-voltage side of the transformer is connected in delta and the low-voltage side is connected in wye.
q1. let us consider a three-phase balanced y-connected source with vab400 30angv rms and 50 hz. this source supplies
The goal is to design and implement a high-speed logical shifter. The specification you have been given requires the design of a circuit that will shift a 16-bit word to the right or to the left by 1-,2-,3-, or 4-bit positions in a single clock ti..
The basic sampling rate for the compact disc (CD) recording industry has been set at 44.1 kHz. (a) Determine the highest frequency of the analog signal that could theoretically be reconstructed from this sampling rate.
Olympic Sports has two issues of debt outstanding. One is a 8% coupon bond with a face value of $21 million, a maturity of 10 years, and a yield to maturity of 9%. The coupons are paid annually.
Three hard-drawn copper conductors with a 1 inch diameter and 1 m spacing in a triangular configuration. (Note that 1 mile = 1.609 km). 1. Calculate the dc resistance in ohms per mile ( p = 1.77 × 10-8-m).
Calculate the number of dangling bonds that may be included under the gate of a MOSFET for 45nm technology (assume cubic device geometry).
If a stepper motor has a step-angle of 7.5? , what digital input rate is required to produce a rotation of 10 rev/sec What will be the step-angle for a hybrid stepper motor with eight stator windings and ten rotor teeth
Draw a strain gauge circuit and its external components to attach to a conveyor mounted only at the ends to measure the load at the center of the conveyor. What type of testing would you need to do to establish a baseline and calibration curve for..
The location of the zeroes in the spectrum suddenly changes to 5 kHz, 10 kHz, 15 kHz.... What parameter of the rectangular pulses has changed and what is its new value?
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