Design And Research Of Gasoline Generator Adaptive Electronic Governor

At present gasoline generator has been widely used in household spare, entertainment, field work, gardening machinery, agricultural machinery and other fields. Gasoline generator load changes frequently, so the need to install the governor to ensure that the rotational speed of the generator set is basically unchanged. Mechanical governor is widely used due to the simple structure, low cost, but its drawback is also very obvious-longer stable, low regulation accuracy. Therefore, in recent years, began the development of the electronic governor.A number of universities and research institutes in the country began to study digital electronic governor of the main representatives of Fujian Agriculture and Forestry University and Chongqing University, for KGE100Ti and HondaGx31two gasoline digital electronic governor, although they are also at developed in the laboratory stage, no molding products to market, but according to the test data to see these two electronic governor can basically good instead of the mechanical governor better governor. These digital electronic governors just control gasoline generator set speed to maintain a constant speed when the load changes in order to ensure a stable output voltage of the generator set. Also does not solve the problem:gasoline generator only one speed, regardless of load or load size how changes in gasoline are working in the same relative speed, the output loss and work noise.In this paper, the development status and characteristics of the domestic and foreign gasoline generator electronic governor, analysis of the problems that exist in the gasoline generator electronic governor, research and design of a gasoline generator adaptive electronic governor. Ferrite generator terminal voltage with load changes, the voltage variation is relatively large, it is designed adaptive electronic governor for ferrite core generator. The governor to ensure that the generator set to the load to provide a stable voltage and does not exceed the maximum speed on the premise of gasoline, according to the size of the load control the speed of the generator speed, so as to achieve the purpose of energy saving and noise reduction,.The design of the hardware circuit PIC8-bit microcontroller PIC16F877A the master chip24BYJ24deceleration wording stepper motor as an executive agency. Peripheral circuit module comprises:a power supply module, RS232communication module, A/D converter module, a Hall signal processing module, and a voltage dividing circuit, and other auxiliary module circuit. In software the decency design aspects, the system uses the assembly language programming, digital control with PID.The gasoline generator adaptive electronic design of this thesis governor can accurately according to the size of the load and adjust the level of the gasoline engine speed, and whether in any case the system can ensure the generator220V stable voltage, and power generation through experimental tests show the maximum speed of the unit will not exceed the rated maximum speed of3600r/m. Also verify the governor system reliability and stability, the basic completion of the system design, to achieve the design objectives and requirements.