scholarly journals Implementasi Pengontrol Suhu dan Kelembaban Menggunakan Metode PID Pada Proses Pematangan Keju

2021 ◽  
Vol 6 (3) ◽  
pp. 48
Author(s):  
Mochamad Tri Wahyudi Ilahy ◽  
Hariyadi Singgih ◽  
Sungkono Sungkono
Keyword(s):  
Set Value

Ada beberapa proses sebelum susu berubahmenjadi keju. Pematangan adalah salah satunya. Pematanganmerupakan proses akhir dari rangkaian proses pembuatankeju. Pematangan (ripening) adalah proses yang mengubahdadih-dadih (keju mentah) segar menjadi keju yang penuhdengan rasa. Dalam skripsi ini peltier diaplikasikan sebagaialat pengendali suhu dan pompa air untuk kelembaban prosespematangan keju yang diharapkan nantinya dapat menunjanghasil produksi. Set value yang diinginkan adalah 16-200Cdengan tingkat kelembaban ≤50 %. Setelah suhu ruang sudahmencapai suhu 16-200C dengan kelembaban ≤50 % barulahkeju dimasukan ke dalam box untuk proses pematangan.Salahsatu metode yang digunakan untuk mengontrol suhu peltieradalah PID. Perancangan kontroller PID menggunakan kurvareaksi Ziegler Nichols menghasilkan nilai Kp=5,53 Ki=8 danKd=2.Untuk pengujian terhadap keju dengan suhu dankelembaban yang berbeda. Semakin lama proses penyimpanandengan suhu dan kelembaban yang sudah ditentukan akanmenghasilkan keju dengan rasa tekstur yang berbeda. Prosesakhir dari pematangan keju nantinya akan menghasilkan kejudengan cita rasa yang sesuai dengan jenis keju tersebut.

scholarly journals Populasi Serangga Penyerbuk Kelapa Sawit Elaeidobius kamerunicus Faust dan Pengaruhnya terhadap Nilai Fruit Set pada Tanah Berliat, Berpasir dan Gambut di Kalimantan Tengah, Indonesia

Agrikultura ◽  
2017 ◽  
Vol 28 (1) ◽  
Author(s):  
Fizrul Indra Lubis ◽  
Sudarjat Sudarjat ◽  
Danar Dono
Keyword(s):  
Sandy Soil ◽  
Fruit Set ◽  
Clay Soil ◽  
Peat Soil ◽  
Soil Types ◽  
Palm Fruit ◽  
Central Kalimantan ◽  
Palm Weevil ◽  
Elaeidobius Kamerunicus ◽  
Set Value

ABSTRACTPopulation of soil palm weevil pollinator Elaeidobius kamerunicus FAUST and its impact on fruit setvalue at clay, sandy and peat soil types in central Kalimantan, di IndonesiaOil palm weevil pollinator Elaeidobius kamerunicus Faust plays an important role in the increasing oilpalm fruit set value. Along with the development of oil palm, fruit set problems occurred in recentdecades in some parts of Indonesia. An experiment was carried out on a seven years old oil palmplantation located at Selangkun Estate, Kotawaringin Barat, Central Kalimantan, Indonesia to find outthe influence of population E. kamerunicus on pollination efficiency at clay, sandy and peat soil types.Relative to other soil types, a high weevil population on male (50,811 weevils/ha ; 72 weevils/spikelet)and female (219 weevils) inflorescences had been recorded at clay soil. Fruit set value on clay soil 58.9%and significantly different with sandy soil of 49.8% and peat soil of 46.4%. Population E. kamerunicusper ha influenced fruit set value at clay, sandy and peat soil types. Number of E. kamerunicus visitedfemale inflorescences did not influenced fruit set value at clay, sandy and peat soil types.Keywords: Clay soil, Elaeidobius kamerunicus, fruit set, peat soil, population, sandy soil ABSTRAKSerangga penyerbuk kelapa sawit Elaeidobius kamerunicus FAUST berperan penting dalam peningkatannilai fruit set kelapa sawit. Seiring dengan perkembangan kelapa sawit, adanya permasalahan nilai fruitset telah terjadi dalam beberapa kurun waktu di beberapa wilayah Indonesia. Penelitian dilakukan diperkebunan kelapa sawit yang telah berumur tujuh tahun, berlokasi di Selangkung, Kotawaringin Barat,Kalimantan Tengah, Indonesia dan bertujuan untuk mengetahui pengaruh populasi E. Kamerunicusterhadap efisiensi penyerbukan pada tipe tanah liat, pasir dan gambut. Berdasarkan tipe tanahdilaporkan bahwa tingginya populasi kumbang pada bunga jantan yaitu (50.811 kumbang/ha; 72kumbang/spikelet) dan bunga betina yang sedang mekar (219 kumbang) pada tipe tanah berliat.Adapun, nilai fruit set pada tanah liat sebesar 58,9% dan berbeda nyata dibandingkan dengan tanahberpasir (49,8%) dan gambut (46,4%). Populasi E. kamerunicus per ha berpengaruh terhadap nilai fruitset pada tipe tanah liat, pasir dan gambut. Namun, jumlah E. kamerunicus yang mengunjungi bungabetina yang sedang mekar tidak berpengaruh terhadap nilai fruit set pada tipe tanah liat, pasir dangambut.Kata Kunci : Elaeidobius kamerunicus, Fruit set , Populasi, Tanah Gambut, Tanah liat, Tanah Pasir

scholarly journals Rancang Bangun Prototype Mesin Pengering Gabah Otomatis Menggunakan Metode PID sebagai Kendali Temperatur

Jurnal INFORM ◽  
2020 ◽  
Vol 5 (2) ◽  
pp. 80-85
Author(s):  
Akhmad Fahruzi ◽  
Ricky Rhamdany
Keyword(s):  
Steady State ◽  
Set Value

Nilai kadar air gabah pascapanen cukup tinggi sekitar 20-23% pada musim kering dan pada musim hujan sekitar 24-27%. Proses pengeringan gabah setelah panen dengan cara konvensional atau manual dilakukan dengan cara gabah dijemur dibawah panas matahari. Cara tersebut memiliki beberapa kelemahan seperti ketergantungan dengan cuaca, membutuhkan lahan yang luas dan waktu pengeringan 54 jam agar gabah menjadi kering dengan nilai kadar air 14,12%. Dari permasalahan ini, maka peneliti membuat mesin pengering gabah yang dapat berkerja secara otomatis. Mesin pengering dibuat untuk menyelesaikan kelemahan dari pengeringan gabah secara konvensional, sehingga pada mesin ini dilengkapi dengan sensor temperatur termokopel tipe K dan kadar air gabah. Sedangkan untuk media pemanasnya menggunakan api yang berbahan bakar gas LPG yang kemudian panas dari api tersebut dialirkan ke dalam tungku atau tempat pengeringan gabah. Pengaturan pemanas  dilakukan dengan mengatur  aliran gas LPG ke nozzle melalui variabel buka tutup valve dimana poros valve tersebut dihubungkan dengan shaft motor DC. Penerapan metode PID juga digunakan dalam mesin pengering ini adalah bertujuan untuk mengendalikan temperatur pengeringan agar sesuai dengan nilai Set Value (SV) atau temperatur yang diinginkan yaitu 38OC. Sedangkan nilai kadar air gabah dianggap telah kering jika nilai kadar air gabah tersebut adalah 14%. Metode PID yang ditanamkan ke dalam mikrokontroler ATmega16 akan memberikan sinyal ke rangkaian driver motor untuk mengatur arah putaran motor DC yang terhubung dengan variabel buka tutup valve. Pengujian metode PID dilakukan secara trial error dan telah menghasilkan error steady state sebesar 5,2% pada SV= 38OC dengan nilai konstanta Kp=2, Ki=2 dan Kd=10. Sedangkan untuk pengujian pengeringan pada gabah kering panen (GKP) dilakukan dengan memilih gabah jenis Ciherang dengan kadar air 20% dan berat 3Kg. Proses pengeringan gabah tersebut membutuhkan waktu 30 menit agar nilai kadar airnya menjadi 14% dengan temperatur pengeringan 38OC, sehingga laju pengeringan gabah pada mesin ini adalah 0,17% per menit.

Influence of Reflow Soldering Process Parameters on the Lead-Free Reflow Profile

2013 ◽  
Vol 690-693 ◽  
pp. 2578-2582
Author(s):  
Wan Lei Liang ◽  
Xiao Dan Guan ◽  
Peng Zhao
Keyword(s):  
Process Parameters ◽  
Influential Factors ◽  
Lead Free ◽  
Heating Zone ◽  
Reflow Time ◽  
Reflow Soldering ◽  
Soldering Process ◽  
Key Indicators ◽  
The Relationship ◽  
Set Value

Reflow soldering process parameters have distinct effect on the lead-free reflow profile and its key indicators. To determine the relationship between reflow soldering process parameters and lead-free reflow profile is significant for obtaining the correct reflow profile. The result of orthogonal experimental shows that the most influential factors of the change rate of heat-up RS are conveyor speed S, temperature set value of the heating zone 1 T1 and the temperature set value of heating zone 2 T2 in sequence; the most influential factors of the soaking time TS are conveyor speed S, the temperature set value of heating zone 4 T4 and the temperature set value of heating zone 2 T2 in sequence; the most influential factors of the reflow peak temperature PT are conveyor speed S, the temperature set value of heating zone 7 T7 and the temperature set value of heating zone 6 T6 in sequence; the most influential factors of the reflow time TAL are conveyor speed S and the temperature set value of heating zone 6 T6 in sequence.

Zooming-in value-in-use through basic individual values

2020 ◽  
Vol 19 (2) ◽  
pp. 97-125
Author(s):  
Paolo Stampacchia ◽  
Marco Tregua ◽  
Mariarosaria Coppola
Keyword(s):  
Social Psychology ◽  
Perceived Value ◽  
Service Dominant Logic ◽  
Individual Values ◽  
Dominant Logic ◽  
Value Propositions ◽  
Conceptual Paper ◽  
Micro Foundations ◽  
Set Value

To overcome the vagueness that Service-Dominant Logic (SDL) scholars have found in conceptualisations of value-in-use due to the existence of different denominations and perspectives, this conceptual paper analyses the SDL literature, finding both value-in-use proposed as a comprehensive denomination, and resources, institutions, and time proposed as its main elements.<br/> Focusing on individuals as beneficiaries of value-in-use, the paper infuses the theory of basic individual values from social psychology in SDL, leading to three propositions that stress the ways in which basic individual values affect individuals' perceptions of resources, institutions, and time. Therefore, basic individual values act as lenses through which beneficiaries perceive flows of resources, institutions, and the time during which use occurs, thereby clarifying why value-in-use is always uniquely and phenomenologically determined by the beneficiary.<br/> This conceptual paper proposes basic individual values as micro-foundations of value co-creation, reveals ways to define the perceived value of resources, and leads practitioners to set value propositions according to basic individual values.

scholarly journals Existential Neuropsychology: A Science of Making Values

2018 ◽  
Author(s):  
A Asmolov ◽  
M Falikman
Keyword(s):  
Personal Meaning ◽  
Existential Psychology ◽  
Existential Psychotherapy ◽  
Motor Functions ◽  
Missing Link ◽  
Task Set ◽  
Explanatory Framework ◽  
Purposeful Activity ◽  
Set Value

In neurorehabilitation and restoration of motor functions, there are Vygotsky–Luria’s line and Leontiev–Zaporozhets’ line that are obviously connected, but their connection isn’t articulated enough. Their point of convergence dates back to mid 1940s, but since then the development of the two lines was largely parallel. And the missing link is Nikolay Bernshtein’s non-classical biology of purposeful activity. Both lines are intrinsically based on his predictive explanatory framework, with the central role of task set in movement construction, which, in turn, determines the hierarchy of levels where backward reafference (‘sensory corrections’) takes place. Current neurorehabilitation disregards the Bernsteinian idea of the central role of values and meanings in the recovery of movements, which opposes neurorehabilitation as training, or instruction, to neurorehabilitation as guidance, the latter relevant to Leontiev’s ‘personal meaning’ problem. Neurorehabilitation as guidance is generation of the personal meaning, or ‘making values’, allowing to overcome bounds perceived as insuperable, the idea that brings it together with existential psychology and existential psychotherapy. Keywords: rehabilitation, task set, value, image of the desired future, physiology of activity, existential neuropsychology, personal meaning

scholarly journals The added water control system based on neural network model and double parameter corrected for loosening and conditioning cylinder

2021 ◽  
Vol 2083 (2) ◽  
pp. 022045
Author(s):  
Zijuan Li ◽  
Jiaojiao Chen ◽  
Yang Gao ◽  
Xiaohui Jia ◽  
Liyuan Zhao ◽  
...  
Keyword(s):  
Neural Network ◽  
Control System ◽  
Prediction Model ◽  
Control Level ◽  
Material Balance ◽  
Water Volume ◽  
Water Control ◽  
Output Factor ◽  
Added Water ◽  
Set Value

Abstract In order to improve the stability of outlet moisture in the of loosening and conditioning cylinder, we concentrate on loosening and conditioning cylinder, and design the prediction model of the added water volume based on neural network technology and the double parameter corrected control system of material balance and moisture deviation for loosening and conditioning cylinder by using historical production data. Taking the set value of inlet and outlet moisture of the loosening and conditioning cylinder as the input factor and the added water volume as the output factor, the prediction model of the added water volume was to predict the total volume of the added water. When there was a big deviation between the actual value and the set value of outlet moisture, the double parameter corrected control system of material balance and moisture deviation was used to correct the deviation, so as to improve the outlet moisture stability and the control accuracy of the added water volume. Using Cigarette brand “diamond (hard-case Yingbin)” produced by Zhangjiakou cigarette factory to built model and analysis, the results showed that after the improvement, the standard deviation of output moisture of loosening and conditioning cylinder reduced by 0.27%, and the control stability and the control level of production process were improved.

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