Barus, Michael Perwira (2020) PERANCANGAN SISTEM PENGENDALIAN PH PADA SISTEM HIDROPONIK NUTRIENT FILM TECHNIQUE (NFT) TANAMAN PAKCOY DENGAN KONTROL PID BERBASIS JARINGAN SYARAF TIRUAN (JST) METODE BACK PROPAGATION. Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Hidroponik NFT merupakan metode budidaya tanaman dengan akar tanaman tumbuh pada larutan nutrisi hidroponik yang dangkal dan tersirkulasi sehingga tanaman dapat memperoleh air, nutrisi, dan oksigen yang cukup. Kondisi lingkungan di Surabaya yang cenderung panas dapat mempengaruhi pH pada larutan nutrisi hidroponik. Secara umum pH dalam hidroponik merepresentasikan ketersediaan unsur hara dalam larutan nutrisi. Apabila nilai pH terlalu tinggi maka akan mengakibatkan terjadinya pengendapan unsur hara dan zat-zat anorganik pada hidroponik, dan juga sebaliknya. Pengendalian pH pada tanaman hidroponik NFT dirancang agar pH dalam larutan nutrisi sesuai dengan rentang pH untuk tanaman Pakcoy yaitu pH 7. Dengan melakukan uji close loop pada sistem, diperoleh karakteristik respon rise time 8.09 detik, settling time 48.47 detik, maximum overshoot 13.69%, error steady state 0.008%, dan peak time 29.44 detik. Pengujian terhadap variasi set point menunjukkan bahwa sistem tetap bekerja mengontrol pH agar selalu mengikuti perubahan set point. Pengujian terhadap variasi disturbance juga menunjukkan bahwa sistem bekerja mengontrol pH agar tetap sesuai dengan set point yang ditentukan.
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Hydroponic NFT is a method of cultivating plants with plant roots growing in shallow and circulating hydroponic nutrient solutions so that plants can obtain enough water, nutrients, and oxygen. Environmental conditions in Surabaya that tend to heat can affect the pH of the hydroponic nutrient solution. If the pH value is too high, it will cause the deposition of nutrients and inorganic substances in hydroponics, and vice versa. The pH control in NFT hydroponic plants is designed so that the pH in the nutrient solution is in accordance with the pH range for the Pakcoy plant ie pH 7. From the control system with the designed PID-ANN control, the results obtained by close loop testing are obtained characteristics of the rise time response 8.09 seconds, settling time 48.47 seconds, maximum overshoot 13.69%, steady state error 0.008%, and peak time 29.44 seconds. Tests on set point variations show that the system still works to control the pH so that it always follows the set point change. Tests for variations in interference also show that the system works to control the pH to keep it in accordance with the specified set point.
| Item Type: | Thesis (Other) |
|---|---|
| Uncontrolled Keywords: | hydroponic NFT, pH, PID-JST controller, hidroponik NFT, pH, kontroler PID-JST |
| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) > TA593.35 Instruments, cameras, etc. |
| Divisions: | Faculty of Industrial Technology > Physics Engineering > 30201-(S1) Undergraduate Thesis |
| Depositing User: | Michael Perwira Barus |
| Date Deposited: | 14 Aug 2020 04:22 |
| Last Modified: | 07 Jun 2023 08:23 |
| URI: | http://repository.its.ac.id/id/eprint/78029 |
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