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Rotatory inertia piezoelectric actuator comprising dual-rhombic series driving mechanism and actuation method

A piezoelectric actuator, series drive technology, applied in the direction of generator/motor, piezoelectric effect/electrostrictive or magnetostrictive motor, electrical components, etc., can solve the problems of complex structure and low strength, achieve Small size, light weight and reasonable utilization of internal space

Active Publication Date: 2016-12-07
XI AN JIAOTONG UNIV
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  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

In the past, rotary inertial actuators often used double wafers as the driving element, which had a complex structure and low strength; in addition, the past piezoelectric actuators mostly used the power-on clamp method, and the system was required to maintain power even when the power was off. In output displacement applications, previous actuators could not complete such tasks

Method used

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  • Rotatory inertia piezoelectric actuator comprising dual-rhombic series driving mechanism and actuation method
  • Rotatory inertia piezoelectric actuator comprising dual-rhombic series driving mechanism and actuation method
  • Rotatory inertia piezoelectric actuator comprising dual-rhombic series driving mechanism and actuation method

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Embodiment Construction

[0017] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0018] Such as figure 1 , figure 2 with image 3 As shown, the rotary inertial piezoelectric actuator containing the double-diamond-shaped series drive mechanism of the present invention includes an upper baffle plate 1, a lower baffle plate 4, an upper bearing 8, a lower bearing 7, a rotary output shaft 9, and a double-diamond-shaped series drive mechanism 2 , the left piezoelectric stack 3 and the right piezoelectric stack 6; the double-diamond series driving mechanism 2 includes a series double-diamond ring 5, and the left piezoelectric stack 3 and the right piezoelectric stack 6 are respectively interference-fitted inside, and the two are connected in series There is a friction block 10 at the joint; the rotating output shaft 9 of the actuator is connected to the upper baffle 1 and the lower baffle 4 respectively through the up...

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Abstract

The invention discloses a rotatory inertia piezoelectric actuator comprising a dual-rhombic series driving mechanism and an actuation method. The actuator consists of an upper baffle, a lower baffle, a bearing, a rotary output shaft, the dual-rhombic series driving mechanism and piezoelectric stacks, wherein the dual-rhombic series driving mechanism comprises series dual-rhombic rings; the piezoelectric stacks are in interference fit inside the series dual-rhombic rings; a friction block is arranged at a series joint of the piezoelectric stacks; the rotary output shaft of the actuator is connected with the upper baffle and the lower baffle through the bearing respectively; and the dual-rhombic series driving mechanism is fixedly assembled between the upper baffle and the lower baffle. After finish of assembly, a side face of the friction block is in close contact with the rotary output shaft, and the actuator can drive a load to output bidirectional rotary motion by control of voltage time sequences and amplitudes of the piezoelectric stacks. The rotatory inertia piezoelectric actuator has the characteristics of easiness in assembly, quick response and accurate action.

Description

technical field [0001] The invention belongs to the technical field of inertial piezoelectric actuators, and in particular relates to a rotary inertial piezoelectric actuator with a double-diamond series drive mechanism and an actuating method. Background technique [0002] The working principle of piezoelectric drive is based on the inverse piezoelectric effect of piezoelectric. Piezoelectric drive has small size, high stiffness, high displacement resolution and positioning accuracy, good linearity, high frequency response, no heat, no noise, and easy to control Etc. [0003] Piezoelectric actuators have a wide range of application backgrounds in the fields of life science, medicine and biological engineering, semiconductor and microelectronics, data storage, optics, photonics, optical fiber, metrology and measurement technology, precision machinery and mechanical engineering. Among them, the inertial actuator is based on the inertia-friction piezoelectric drive principle,...

Claims

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Application Information

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IPC IPC(8): H02N2/14H02N2/12
CPCH02N2/12H02N2/14
Inventor 敬子建徐明龙邵妍田征
Owner XI AN JIAOTONG UNIV
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