双振子弯曲模态直线超声电机的结构设计
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摘要
通过直线超声电机的结构形式和夹持方式的设计,改善电机的速度稳定性。提出了一款新型直线超声电机。该电机采用矩形板结构,它仅利用了矩形板结构的弯曲振动,有利于提高电机的输出效率;采用双振子结构,有利于提高电机双向速度一致性;单个振子采用一端铰支的夹持方式,有利于提高电机的结构稳定性和速度稳定性。探讨了定子的夹持形式对定子的运动自由度、结构稳定性和速度稳定性的影响规律,提出了有利于结构稳定、速度稳定的定子形式和加持方式;通过ANSYS仿真估算定子振动的对称和反对称模态频率,通过结构优化提高两相模态频率一致性。
This paper presents a method of improving the speed stability of the linear ultrasonic motor by changing the structure of the motor and the clamping style.First,a new type of linear ultrasonic motor is proposed.The motor adopts the rectangular slab structure,which just uses bending vibration to drive rotor.This structure enhances the output efficiency of the motor.The motor also adopts a double vibrator structure,which improves the speed consistency of the motor.Furthermore,the clamping method with one end hinged of each vibrator helps improve the structural stability and speed stability of the motor.Then,the effect of the clamping formed on the degree of freedom,structural stability and speed stability is discussed.Symmetric and anti-symmetric mode frequencies are estimated by ANSYS simulation.This two modal frequencies come into coincidence by means of structural optimization.
This paper presents a method of improving the speed stability of the linear ultrasonic motor by changing the structure of the motor and the clamping style.First,a new type of linear ultrasonic motor is proposed.The motor adopts the rectangular slab structure,which just uses bending vibration to drive rotor.This structure enhances the output efficiency of the motor.The motor also adopts a double vibrator structure,which improves the speed consistency of the motor.Furthermore,the clamping method with one end hinged of each vibrator helps improve the structural stability and speed stability of the motor.Then,the effect of the clamping formed on the degree of freedom,structural stability and speed stability is discussed.Symmetric and anti-symmetric mode frequencies are estimated by ANSYS simulation.This two modal frequencies come into coincidence by means of structural optimization.
引文
[1]赵淳生.超声电机技术与应用[M].北京:科学出版社,2007.
[2]简月,姚志远,杨模尖,等.V型直线超声电机梁式夹持的结构设计[J].光学精密工程,2015,23(5):1358-1364.
[3]万志坚,胡泓.面内弯纵型直线超声电机的驱动与摩擦分析[J].振动、测试与诊断,2014,34(2):229-236.
[4]罗辞勇,张帆,杜劲超.行波型超声电机的稳定性分析[J].重庆大学学报,2014,37(2):46-53.
[5]鹿存跃,魏燕定,郭吉丰,等.双振子自走型直线超声电机的研究[J].浙江大学学报(工学版),2009,43(8):1469-1472.
[6]Xia C,Wang M.Stability analysis of the rotor of ultrasonic motor driving fluid directly[J].Ultrasonics,2005,43(7):596-601.
[7]Liu Y,Chen W,Liu J,et al.A high-power linear ultrasonic motor using bending vibration transducer[J].IEEE Transactions on Industrial Electronics,2013,60(11):5160-5166.
[8]华顺明,李志强,孟玉明,等.基于压电驱动的螺纹式直线电机[J].微电机,2015,48(7):13-17.
[9]陈超,赵淳生.旋转型行波超声电机中三维接触机理的研究[J].中国电机工程学报,2006,26(21):149-155.
[10]Yun C H,Ishii T,Nakamura K,et al.A high power ultrasonic linear motor using a longitudinal and bending hybrid bolt-clamped Langevin type transducer[J].Japanese Journal of Applied Physics,2001,40(5S):3773-3776.
[2]简月,姚志远,杨模尖,等.V型直线超声电机梁式夹持的结构设计[J].光学精密工程,2015,23(5):1358-1364.
[3]万志坚,胡泓.面内弯纵型直线超声电机的驱动与摩擦分析[J].振动、测试与诊断,2014,34(2):229-236.
[4]罗辞勇,张帆,杜劲超.行波型超声电机的稳定性分析[J].重庆大学学报,2014,37(2):46-53.
[5]鹿存跃,魏燕定,郭吉丰,等.双振子自走型直线超声电机的研究[J].浙江大学学报(工学版),2009,43(8):1469-1472.
[6]Xia C,Wang M.Stability analysis of the rotor of ultrasonic motor driving fluid directly[J].Ultrasonics,2005,43(7):596-601.
[7]Liu Y,Chen W,Liu J,et al.A high-power linear ultrasonic motor using bending vibration transducer[J].IEEE Transactions on Industrial Electronics,2013,60(11):5160-5166.
[8]华顺明,李志强,孟玉明,等.基于压电驱动的螺纹式直线电机[J].微电机,2015,48(7):13-17.
[9]陈超,赵淳生.旋转型行波超声电机中三维接触机理的研究[J].中国电机工程学报,2006,26(21):149-155.
[10]Yun C H,Ishii T,Nakamura K,et al.A high power ultrasonic linear motor using a longitudinal and bending hybrid bolt-clamped Langevin type transducer[J].Japanese Journal of Applied Physics,2001,40(5S):3773-3776.