Hasil Pencarian  ::  Simpan CSV :: Kembali

Abstrak :
In this article, the Active Force Control (AFC) method is implemented for reducing the vibrations that are caused by an unbalanced rotary engine. By using Matlab Simulink, the dynamic model of an unbalanced rotary engine was simulated. Then a Proportional–Integral–Derivative PID controller with the AFC loop was added. The obtained simulation results proved that when the PID controller was operating without the AFC loop, the vibrations were reduced but with very less efficiency when compared to the case in which the AFC loop was engaged with the PID controller. This means that the amplitude of vibrations was extremely reduced when the PID controller was equipped with the AFC loop, and the same results were observed for the frequency domain case. The robustness of the AFC method was also tested and again the method of AFC was very capable in reducing the vibrations.

Abstrak :
The pattern of economic growth in Indonesia between 1995 and 2005 was analyzed to determine structural changes that occurred in Indonesia. A hypothetical analysis of Deviation from Proportional Growth was used in this study to better understand the structural change of a country by assuming a virtual economic structure. The author analyzed the Indonesian National Input-Output Table of 1995, 2000, and 2005 extracted from the Asian International Input-Output Table. A comparative study was also conducted for Malaysia and Thailand during the same period. The results revealed a shift away from the agricultural sector towards non-agricultural sectors in Indonesia, Malaysia, and Thailand between 1995 and 2005, confirming the existence of industrialization in these countries. Although the countries had a similar pattern of growth which is contributed mainly by the expansion of export from 1995–2000, the pattern of growth among the three countries was divergent from 2000–2005.