Active noise control in agricultural machines
نویسنده
چکیده
Agricultural machines generate a complex noise field with significant low-frequency components. The demands for good sound comfort of the driver inside cabins of these machines are continuously growing. Since passive control techniques are not able to efficiently reduce the low-frequency noise in the cabin, active noise control techniques are being explored. A zone of quiet around the ears of the driver is quested through the use of secondary loudspeakers. This paper studies three different control strategies: feedforward control, feedforward control with feedback compensation and feedback control. The practical setup and the control algorithm of each control technique is discussed. The practical results, the advantages and the restrictions of the three techniques are compared.
منابع مشابه
ارزیابی وضعیت انتشار صدا در داخل کابین و محیط بیرون ماشین آلات کشاورزی صنعت نیشکر در دو حالت ساکن و متحرک
Introduction: Agriculture is one of the oldest jobs in the world and almost 7-2 billion people all over the world are working in this field. In the field of agriculture workers may be always in danger, due exposure to various chemical and physical factors. Despite the dramatic technological developments in agricultural science, this field is still among one of the most dangerous workplaces...
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