The Research Of A New-style Proportional Controllable Amplifier

Electro-Hydraulic proportional control technique is one of the best flourishing embranchment in fluid drive and control technology. It makes sufficient use of good qualities in hydraulic pressure control and electricity control. These good qualities include that fluid drives big power and which has fast response time and it is very convenient and flexible to deal with electric signal, moreover the electric signal can control long-range and switch steplessly the value of hydraulic pressure parameters. Therefore, Electro-Hydraulic proportional control technology has achieved swift and violent development, which is almost applied in all industry fields. By way of important composing part, the function of proportional controllable amplifier is to provide given capability current for proportional electromagnetic magnet or electricity- machine switching equipments. The reason for Electro-Hydraulic proportional control technology exerting widely in engineering equipments, the agility of proportional controllable amplifier takes important action in it. So it is very significant to exploit new-style proportional controllable amplifier to accelerate the development of Electro-Hydraulic proportional control technology.Basing on abundant comparing and analysis the strongpoint and disadvantages of mock proportional amplifier and low frequency switching proportional amplifier, letterpress brought forward a new blue print, viz. adopted high frequency pulse width modulating technology, which is not only analyzed rationalization in theory but also proved preponderance by designing, accounting and experiments.The paper marked out the composing of new-style proportional controllable amplifier detailedly, investigated, designed and accounted...