cover
Article Per Year (5 Year)
All
Home Page
OAI Link
Editorial Team
Contact
Reviewer
Google Scholar
Contact Name
Agung Nugroho
Contact Email
jmfs@lppm.itb.ac.id
Phone
+6222-86010051
Journal Mail Official
jmfs@lppm.itb.ac.id
Editorial Address
ITB Journal Publisher, LPPM ITB, Center for Research and Community Services (CRCS) Building 6th & 7th Floor , Jl. Ganesha No. 10 Bandung 40132, Indonesia
Location
Kota bandung,
Jawa barat
INDONESIA
Journal of Mathematical and Fundamental Sciences
Published by Institut Teknologi Bandung
ISSN : 23375760     EISSN : 23385510     DOI : https://doi.org/10.5614/j.math.fund.sci.
Core Subject : Science, Education,
Astronomy Chemistry Earth & Planetary Sciences Mathematics Physics
Journal of Mathematical and Fundamental Sciences welcomes full research articles in the area of Mathematics and Natural Sciences from the following subject areas: Astronomy, Chemistry, Earth Sciences (Geodesy, Geology, Geophysics, Oceanography, Meteorology), Life Sciences (Agriculture, Biochemistry, Biology, Health, Medical, Pharmacy), Mathematics, Physics, and Statistics.
Arjuna Subject : Matematika - Matematika (Lain-Lain)
Articles 2 Documents
 1 
Search results for , issue "Vol. 19 No. 1 (1986)" : 2 Documents clear
Modulateur PWM Numerique Programmable : Application a la Conversion d'energie Maximale du panneau solaire a la batterie Y. Haroen; J. Jalade; J.C. Marpinard
Journal of Mathematical and Fundamental Sciences Vol. 19 No. 1 (1986)
Publisher : Institute for Research and Community Services (LPPM) ITB

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Abstract. PWM modulator with feedback analog is often used in a voltage/current control system, but sometimes problems arise in which the modulator could not be used with this method. To overcome this problem a programmed numeric PWM modulator is used. This paper discusses the working procedure and realization from the software and hardware point of yiew by using 8085 microprocessor. One of its application is to control the firing time of power switching transistor in a DC converter (BUCK) where the input BUCK is connected to the solar cell panel and the output side is connected to the battery. With time firing control of the power transistor, the power of the solar cell panel can be transferred to the battery at its maximum. Sari. Modulator PWM dengan umpan balik analog sering digunakan dalam sistem pengaturan tegangan/arus, tetapi kadang-kadang hal ini menimbulkan masalah, sehingga modulator dengan cara ini tidak dapat dipergunakan lagi. Salah satu cara untuk mengatasinya adalah dengan menggunakan modulator PWM numerik terprogram. Di sini diuraikan cara kerja dan realisasinya ditinjau dari piranti lunak dan piranti keras dengan menggunalan mikroprosessor 8085. Salah satu aplikasinya adalah pengaturan waktu penyalaan transistor daya switching pada suatu konverter arus searah (BUCK). Sisi masukan BUCK dihubungkan ke suatu panel sel surya dan sisi keluaran dihubungkan ke baterai. Dengan pengaturan waktu penyalaan transistor daya, maka daya dari panel sel surya dapat ditransfer semaksimum mungkin ke dalam baterai.
Teori Kendali Klasik Versus Prinsip Maksimum Pontryagin dalam Pembentukan Strategi Kendali Poros Tukik Satelit Siaran Langsung Adi Sadewo Salatun
Journal of Mathematical and Fundamental Sciences Vol. 19 No. 1 (1986)
Publisher : Institute for Research and Community Services (LPPM) ITB

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Abstract. This paper describes the development of pitch control strategy for space craft possessing a Direct Broadcasting Satellite configuration which is assumed to consist of a main rigid body plus large flexible solar arrays. The bias momentum concept of the double gimballed reaction wheel is applied for generating the pitch control torques. It is found that the wheel acceleration/deceleration produces an undesired cross coupling in roll, yaw, and pitch axis, In order to minimize this coupling, the pitch control strategy is then constructed based on the Pontryagin's Maximum principle. For comparison the classical second order theory is also applied. It can be shown that the application of maximum principle results in a better control strategy. Sari. Tulisan ini menyajikan perancangan strategi kendali poros tukik suatu wahana antariksa yang memiliki konfigurasi Satelit Siaran Langsung yang terdiri dari badan utama kaku dan panel surya lentur berukuran besar. Konsep pengubahan momentum roda reaksi dua engsel diterapkan untuk membangkitkan torsi kendali poros tukik. Dalam analisis di sini ditemukan kopling silang (cross coupling) pada ketiga poros olah gerak wahana. Untuk memperkecil kopling tersebut, strategi kendali poros tukik dibangun berdasarkan prinsip maksimum dari Pontryagin. Sebagai pembanding, teori kendali klasik orde dua juga diterapkan. Di sini dapat ditunjukkan kelebihan prinsip maksimum Pontryagin.

Page 1 of 1 | Total Record : 2

 1 

Filter by Year

1986 1986


Reset
Filter By Issues
All Issue Vol. 56 No. 3 (2024) Vol. 56 No. 1 (2024): (In Progress) Vol. 55 No. 3 (2024) Vol. 55 No. 2 (2023) Vol. 55 No. 1 (2023) Vol. 54 No. 3 (2023) Vol. 54 No. 2 (2022) Vol. 54 No. 1 (2022) Vol. 53 No. 3 (2021) Vol. 53 No. 2 (2021) Vol. 53 No. 1 (2021) Vol. 52 No. 3 (2020) Vol. 52 No. 2 (2020) Vol. 52 No. 1 (2020) Vol. 51 No. 3 (2019) Vol. 51 No. 2 (2019) Vol. 51 No. 1 (2019) Vol. 50 No. 3 (2018) Vol. 50 No. 2 (2018) Vol. 50 No. 1 (2018) Vol. 49 No. 3 (2017) Vol. 49 No. 2 (2017) Vol. 49 No. 1 (2017) Vol. 48 No. 3 (2016) Vol. 48 No. 2 (2016) Vol. 48 No. 1 (2016) Vol. 47 No. 3 (2015) Vol. 47 No. 2 (2015) Vol. 47 No. 1 (2015) Vol. 46 No. 3 (2014) Vol. 46 No. 2 (2014) Vol. 46 No. 1 (2014) Vol. 45 No. 3 (2013) Vol. 45 No. 2 (2013) Vol. 45 No. 1 (2013) Vol. 44 No. 3 (2012) Vol. 44 No. 2 (2012) Vol. 44 No. 1 (2012) Vol. 43 No. 3 (2011) Vol. 43 No. 2 (2011) Vol. 43 No. 1 (2011) Vol. 42 No. 2 (2010) Vol. 42 No. 1 (2010) Vol. 41 No. 2 (2009) Vol. 41 No. 1 (2009) Vol. 40 No. 2 (2008) Vol. 40 No. 1 (2008) Vol. 39 No. 1-2 (2007) Vol. 38 No. 2 (2006) Vol. 38 No. 1 (2006) Vol. 37 No. 2 (2005) Vol. 37 No. 1 (2005) Vol. 36 No. 2 (2004) Vol. 36 No. 1 (2004) Vol. 35 No. 2 (2003) Vol. 35 No. 1 (2003) Vol. 34 No. 2&3 (2002) Vol. 33 No. 3 (2001) Vol. 33 No. 2 (2001) Vol. 33 No. 1 (2001) Vol. 32 No. 2 (2000) Vol. 32 No. 1 (2000) Vol. 31 No. 3 (1999) Vol. 31 No. 2 (1999) Vol. 31 No. 1 (1999) Vol. 30 No. 3 (1998) Vol. 30 No. 2 (1998) Vol. 30 No. 1 (1998) Vol. 29 No. 1/2 (1996) Vol. 27 No. 3 (1994) Vol. 27 No. 2 (1994) Vol. 25 No. 2/3 (1992) Vol. 25 No. 1 (1992) Vol. 24 No. 2/3 (1991) Vol. 24 No. 1 (1991) Vol. 23 No. 1 (1990) Vol. 22 No. 1/2/3 (1989) Vol. 21 No. 2/3 (1988) Vol. 21 No. 1 (1988) Vol. 20 No. 1/2 (1987) Vol. 20 No. 3 (1987) Vol. 19 No. 2/3 (1986) Vol. 19 No. 1 (1986) Vol. 18 No. 2/3 (1985) Vol. 18 No. 1 (1985) Vol. 17 No. 3 (1984) Vol. 17 No. 2 (1984) Vol. 17 No. 1 (1984) Vol. 16 No. 3 (1983) Vol. 16 No. 2 (1983) Vol. 16 No. 1 (1983) Vol. 15 No. 3 (1982) Vol. 15 No. 2 (1982) Vol. 15 No. 1 (1982) Vol. 14 No. 1/2 (1981) Vol. 14 No. 3 (1981) Vol. 13 No. 1/2 (1980) Vol. 13 No. 3 (1980) Vol. 12 No. 3 (1979) Vol. 12 No. 2 (1979) Vol. 12 No. 1 (1979) Vol. 11 No. 3 (1978) Vol. 11 No. 2 (1977) Vol. 11 No. 1 (1976) Vol. 10 No. 3 (1976) Vol. 10 No. 2 (1975) Vol. 10 No. 1 (1975) Vol. 9 No. 3 (1975) Vol. 9 No. 2 (1975) Vol. 9 No. 1 (1974) Vol. 8 No. 3 (1974) Vol. 8 No. 2 (1974) Vol. 8 No. 1 (1974) Vol. 7 No. 4 (1974) Vol. 7 No. 3 (1973) Vol. 7 No. 2 (1973) Vol. 7 No. 1 (1973) Vol. 6 No. 4 (1972) Vol. 6 No. 3 (1972) Vol. 6 No. 2 (1971) Vol. 6 No. 1 (1971) Vol. 5 No. 1 (1970) Vol. 4 No. 4 (1970) Vol. 4 No. 3 (1969) Vol. 4 No. 2 (1968) Vol. 4 No. 1 (1967) Vol. 3 No. 4 (1965) Vol. 3 No. 3 (1965) Vol. 3 No. 2 (1964) Vol. 3 No. 1 (1964) Vol. 2 No. 4 (1963) Vol. 2 No. 3 (1963) Vol. 2 No. 2 (1962) Vol. 2 No. 1 (1962) Vol. 1 No. 4 (1961) Vol. 1 No. 3 (1961) Vol. 1 No. 2 (1961) Vol. 1 No. 1 (1961) More Issue