彭敬辉, 李松晶, JACOB M. Mchenya. 电磁力与射流流场中压力脉动作用下伺服阀力矩马达谐响应分析[J]. 工程力学, 2013, 30(2): 348-353. DOI: 10.6052/j.issn.1000-4750.2011.07.0463
引用本文: 彭敬辉, 李松晶, JACOB M. Mchenya. 电磁力与射流流场中压力脉动作用下伺服阀力矩马达谐响应分析[J]. 工程力学, 2013, 30(2): 348-353. DOI: 10.6052/j.issn.1000-4750.2011.07.0463
PENG Jing-hui, LI Song-jing, JACOB M Mchenya. HARMONIC RESPONSE ANALYSIS OF A HYDRAULIC SERVO-VALVE TORQUE MOTOR UNDER THE ACTION OF ELECTROMAGNETIC FORCE AND PRESSURE FLUCTUATION IN JET FLOW FIELD[J]. Engineering Mechanics, 2013, 30(2): 348-353. DOI: 10.6052/j.issn.1000-4750.2011.07.0463
Citation: PENG Jing-hui, LI Song-jing, JACOB M Mchenya. HARMONIC RESPONSE ANALYSIS OF A HYDRAULIC SERVO-VALVE TORQUE MOTOR UNDER THE ACTION OF ELECTROMAGNETIC FORCE AND PRESSURE FLUCTUATION IN JET FLOW FIELD[J]. Engineering Mechanics, 2013, 30(2): 348-353. DOI: 10.6052/j.issn.1000-4750.2011.07.0463

电磁力与射流流场中压力脉动作用下伺服阀力矩马达谐响应分析

HARMONIC RESPONSE ANALYSIS OF A HYDRAULIC SERVO-VALVE TORQUE MOTOR UNDER THE ACTION OF ELECTROMAGNETIC FORCE AND PRESSURE FLUCTUATION IN JET FLOW FIELD

  • 摘要: 为揭示伺服阀自激噪声的产生机理,该文对伺服阀力矩马达的振动特性进行研究。通过分析喷嘴挡板式电液伺服阀的工作原理,给出了衔铁组件的受力数学模型。建立了单自由度系统的谐响应分析数学模型,分析了谐振频率与系统固有频率的关系。采用ANSYS软件对电磁场和伺服阀内部流场作用下力矩马达的谐响应特性进行了分析,得出了力矩马达关键点处不同方向上的谐响应曲线,分析了其在0~4500Hz内的谐振规律。仿真结果表明,电磁场和流场的作用会激发力矩马达的高频振动,从而可能诱发高频自激噪声。

     

    Abstract: To discover the mechanism of self-excited noise in servo valves, vibration characteristics of a hydraulic servo valve torque motor was studied. Firstly the working mechanism of a nozzle-flapper hydraulic servo valve was introduced, and then the mathematical models of the forces which act on the armature assembly were created. The mathematical model of harmonic response analysis for single degree of freedom system was presented and the relationship between resonance frequency and natural frequency was analyzed. By using ANSYS software, the harmonic response characteristics of the torque motor under the action of the electromagnetic field and the flow field were simulated. The harmonic response curves of key points in different directions were obtained and the resonance regularity in the range 0~4500Hz was analyzed. The simulation results show that the electromagnetic field and the flow field may excite the high frequency vibration of the torque motor, as a result, the self-excited noise may be induced.

     

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