This paper focuses on one of the armature control methods of speed control of PMDC motor by using fuzzy logic, which is implemented in MATLAB tool box. The use of fuzzy logic in the control system is to reduce the complexity and probably to minimize the mathematical work is in the area of controller. The implementation of fuzzy logic is amazingly simple due to availability in fuzzy processors. Various microcontrollers are also supporting to the fuzzy logic leads to ease implementation of such controllers. Here an attempt has been made, to design and control the speed of PMDC motor with Fuzzy Logic and MATLAB. The system is designed and fabricated using PC and "C‟, MATLAB tool box. Fuzzy rules are prepared and tuned to in such a way that it can control the speed of PMDC motor at desired speed with minimal amount of time at high accuracy. The system is enough flexible and needs less hardware to implement the entire controller.
[...] Inductive proximity Speed sensor DC Motor F/V converter A/D and D/A converter PWM generator circuit MOSFET based chopper circuit Fuzzy controller. Input Computer ADC Card (PCL 207) MATLAB parameters. Defuzzification: Converts fuzzy set to crisp set. The defuzzification acquires the aggregated linguistic values from the inferred fuzzy control action and generates a non-fuzzy control output. MATLAB is a matrix laboratory used for solving the technical complex problems with the help of computing. It integrates computing, visualization and programming as well in easy use environment, where the problems and the solutions are expressed in conventional mathematics. [...]
[...] The developed system of Speed controller of PMDC motor based fuzzy logic is tested for various conditions. From the results obtained following conclusions can be drawn. The developed 2 response with better performance than conventional controllers. System has a greater flexibility. Acceptable error range is programmable results better accuracy. MATLAB makes easy to define fuzzy membership functions. The system gives good results for the entire operation of the speed. The system can be enhanced further to get better results by following ways. [...]
[...] The analog voltage generated is proportional to the rotational speed of DC motor. This voltage is applied to 12 bits resolution data acquisition PCL 207 card. The output of data acquisition card is actual speed in equivalent digital data. The actual speed is compared with set speed and an error signal is generated using MATLAB. If the error is within the limit then maintaining the speed otherwise take another speed data to calculate error change rate. This will generate the speed data. [...]
[...] FLC AND MEMBERSHIP The main objective is to implement fuzzy logic in closed loop system and to measure the real time speed of DC motor and control it for desired speed irrespective of the load with field failure protection indication. The mechanical assembly is connected to the DC motor shaft, which passes four times in front of proximity FLC a knowledge-based system is implemented by using the fuzzy logic toolbox from MATLAB to take the decisions on error and error change. [...]
[...] Trigger mode: Software trigger. Analog output converter): Channel: 1 Channel. Resolution: 12 bits. Output range: 0 to 5V or 0 to 10V. frequency is 200Hz. ii. PMDC Motor: the system can be mold for the separately exited DC motor, but for the prototype PMDC motor is used. The specifications of PMDC motor used for this application are as follows Make: Martin Frank Pvt. Ltd. Type: JS FA 10. Armature voltage: 36 V. Current: 1.8 Amps. Power: 60 W. Speed: 1600 RPM. [...]
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