Wang, Jyh-haw creator Tentscher, Wolfgang Chairperson Prida Wibulswas Examination Committee Surapong Chiraratananon Examination Committee Chinese Petroleum Corporation, R.0.C Scholarship Donor text series technical report th Bangkok Asian Institute of Technology 1990 continuing eng 105 leaves The governor of engine generator set is used to regulate the engine speed under different load conditions by adjusting the fuel supply. The speed of the engine is the most important parameter. Governor systems , mechanical and electrical ones , keep speed and voltage constant. In this research, the characteristics of governor systems will be discussed and the responses specially for biogas fuel be measured and discussed. At the same time, the governor simulation software will be developed to analyse the parameters system from both frequency and time response point of view, for example Bold plot , Root-locus, Nyquist plot , Gain Margin, Phase Margin and state estimator for full state feedback , and so on. It will be more helpful for studying, design and analysis of governor system. Otherwise , the practical circuit of electronic governor has been constructed and tested in the laboratory. It will show in · the literature also. On the principle of low cost and reliable operation, the electronic governor is high potential for using in the future. Finally, an experiment investigation on a mechanical and electronic governor, it can hold down to 100 US$ then the electronic governor will more suitable replacement the mechanical governor in the rural area. And it have been carried out in laboratory. A research study submitted in partial fulfilment of the requirements for the degree of Master of Engineering, School of Environment, Resources and Development Research Studies Project Report (M. Eng.) - Asian Institute of Technology, 1990 Governors (Machinery) Automatic control Asian Institute of Technology. http://203.159.5.9/ait-thesis/detail.php?q=B18163 http://203.159.5.9/ait-thesis/detail.php?q=B18163 271198 20260817162244.0