In this study, a control moment gyroscope is used as an actuator to stabilize the inverted pendulum. A control strategy is proposed to stabilize the inverted pendulum at the upright unstable equilibrium point and to maintain the gimbal angle as small as possible. Such a problem is formulated as a constrained H∞ disturbance attenuation problem and then transformed into solving linear matrix inequalities. The performance of the proposed controller is evaluated through simulation for linear and nonlinear cases. It is shown that the proposed state-feedback control strategy effectively stabilizes the inverted pendulum.
Pemasaran produk erat kaitannya dengan cara pengemasan yang baik dan menarik. Satu hal yang perlu diperhatikan dalam pengemasan makanan yaitu pemilihan bahan pengemasan yang harus sesuai dengan jenis makanan itu sendiri. Permasalahan cara pengemasan ini dialami oleh pedagang ikan asap dan ikan segar di Sentra Ikan Bulak (SIB), Surabaya. Pembeli ikan di SIB terbatas hanya pada masyarakat sekitar Surabaya, sedangkan pembeli dari luar kota kurang berminat karena pengemasan ikan rawan bocor dan bau jika dibawa dalam perjalanan panjang. Sehingga teknologi pengemasan yang lebih modern dengan vacuum sealsangat diperlukan untuk mengatasi masalah tersebut. Publikasi ini melaporkan kegiatan pengabdian yang memberikan penyuluhan serta menerapkan teknologi vacuum seal kepada SIB sehingga produk olahan ikan dapat bertahan lebih lama dan penjualan ikan di SIB dapat meningkat.
The domination of coal-fired power plant as power generation due to its feasibility to ensure a stable supply of electricity to customer. Unfortunately, the use of coal as power plant fuel faces an issue of air pollution. Some efforts have been proposed to make the operated coal-fired power plant meeting the environmental regulations. One of the most potential ways to solve the problem is by improving the coal-fired power plant efficiency and then equate to a greenhouse gas reduction. Thus, heat balance simulation of coal-fired power plant which operates in different conditions have to be studied in order to analyse the power plant performance. In this paper, the heat balance of a 315 MW low rank coal-fired power plant is simulated by Cycle-Tempo. The simulations are carried out for several different operation conditions of the power plant. The Heat Rate will increase of 3.66% when all HPH are on off-duty while it increases by 2.63% when all LPH are on off-duty. Furthermore, the increasing of Superheater temperature of 5 °C will decrease the Heat Rate of 0.59% and it will decrease of 0.39% when the temperature of Reheater increases of 5 °C.
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