The 3 phase induction motor in its use is increasingly growing, so research on the speed regulation of the 3 phase induction motor is also increasingly being studied. This is because the use of 3 phase induction motors in industry and especially hybrid vehicles is increasingly being developed. But there are some disadvantages of induction motors, one of which is the characteristics of non-linear parameters, especially rotor resistance which has varying values for different operating conditions, so it cannot maintain its speed constantly if there is a change in load. This of course can affect the performance of an induction motor. To get a constant speed and better system performance on load changes a controller / controller is needed. This study aims to model the parameters used in Direct Field Oriented Control (DFOC) using Matlab SIMULINK. With the controlled dq parameter, the induction motor will be more stable, because the dq parameter determines the stability of the changes in torque and flux in the induction motor. In the results of implementation, it can be seen that the use of DFOC can be used as an approach in the speed regulation of the induction motor. and with the use of PI controls it can help the output response get better with a shorter response time to reach the reference value.
This paper discusses about controlling the buck boost converter output voltage remains constant by comparing of loads resistor and battery. Buck boost converter output voltage tends to be unstable when given a disturbance with a variety of loads, for that it needs proper control to adjust the duty cycle. The controls that will be used are a combination of conventional control methods, i. e. Proportional Integral (PI) and intelligent control, i. e. Fuzzy logic. The results show that the combination of PI control and Fuzzy Logic can improve performance, i. e. small errors close to zero and the buck boost converter output voltage remains constant even though the load is varied, i. e. resistors and battery.
The aim from this research is to design a device who can make grow and fash horticultural plant in inside a room without side-effect of sun-light with arduino mega as the brain who had control all of the system with the power for monitoring and control the light, temperature of the room, soil damp and watering the plans. Subtitute the sun-light for photosinthesis process exploit LED grow light is red and blue color, while for temperature detection inside the room used temperature sensor DHT22,chiller as a freeze tool and for detection a sum soil damp less than 280, the motor pump will active for doing watering the plans.Lettuce-plan and leady vegetable who has product from different system appropriate with combination/domination ligh who has already used, for lettuce-plan dominate with blue light and dominan red light produce lettuce is not good enough while for light combination blue and red, lettuce-plan who has produce looking good, the are many leaf-sum, is nit brittle, and growth very fast. For leafy vegetable from three combination/dominate light who used for produce in the same condition is growth very fast, has tall stem, and small, the less leafe sum (distance) and the leave color is yelow.
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