Piezoelectric inertia and piezoelectric worm-creep hybrid rotary driver

A rotary drive, hybrid technology, applied in the directions of generators/motors, piezoelectric effect/electrostrictive or magnetostrictive motors, electrical components, etc., can solve the problems of small driving force and slow driving speed, and achieve driving The effect of large stroke, large driving torque and fast driving speed

Pending Publication Date: 2020-01-17
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the problems of small driving force driven solely by piezoelectric inertia and slow driving speed by sole

Method used

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  • Piezoelectric inertia and piezoelectric worm-creep hybrid rotary driver
  • Piezoelectric inertia and piezoelectric worm-creep hybrid rotary driver
  • Piezoelectric inertia and piezoelectric worm-creep hybrid rotary driver

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0026] Example 1

[0027] Such as figure 1 with figure 2 As shown, a piezoelectric inertial and piezoelectric worm hybrid rotary driver includes a bearing mechanism 1, a driving mechanism 2, and a fixing mechanism 3. The driving mechanism 2 includes a triangular flexible driving member 21, a first driver 22, The second driver 23, the first connector 24 and the second connector 25; wherein: the triangular flexible drive member 21 is fixedly connected to the first driver 22 and the second driver 23, and the first driver 22 And the second driver 23 are arranged symmetrically on the fixing mechanism 3 through the first connecting member 24 and the second connecting member 25; the bearing mechanism 1 is fixed by the fixing mechanism 3, and the bearing The mechanism 1 and the driving mechanism 3 are in contact with each other.

[0028] In the above scheme, a piezoelectric inertial and piezoelectric worm hybrid rotary actuator, by inputting a triangular wave voltage that slowly rises an...

Example Embodiment

[0037] Example 2

[0038] Such as image 3 with Figure 4 As shown, for the counterclockwise rotation drive, the second driver 23 does not work and inputs a slowly rising and rapidly falling triangular wave voltage to the first driver 22. The reference frequency is 2.6kHz, the reference voltage is 90V, and the reference voltage rise and fall time is 4 :1. When the voltage rises slowly, the first driver 22 slowly extends, and the triangular flexible driving member 21 produces a forward movement at the driving point, rotating the rotor 11 counterclockwise by an angle, and at the same time, it also produces an upward parasitic movement at the driving point. Clamping the rotor 11 effectively increases the driving force when the rotor 11 rotates. When the voltage drops rapidly, the triangular flexible driving member 21 at the driving point will also rapidly contract backwards with the first driver 22. At this time, due to the inertia of the rotor 11 itself and the downward parasitic...

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Abstract

The invention discloses a piezoelectric inertia and piezoelectric worm-creep hybrid rotary driver which comprises a bearing mechanism, a driving mechanism and a fixing mechanism, wherein the bearing mechanism and the driving mechanism are fixed through the fixing mechanism, and the bearing mechanism and the driving mechanism are in contact with each other. According to the invention, triangular wave voltage which slowly rises and quickly falls is input into one driver; a piezoelectric actuator slowly extends and then quickly contracts; a triangular flexible driving component moves under the action of the piezoelectric actuator; based on an inertia rotation driving principle, the hybrid rotary driver inherits advantages of large driving stroke, high driving precision and high driving speedof an inertia driving mechanism, meanwhile, the rotor is clamped by a driving point in the effective driving process through the triangular flexible driving component under the inspiration of loosening and clamping movement in worm-creep driving, and therefore the advantage of large worm-creep driving torque can be obtained.

Description

technical field [0001] The invention relates to the technical field of drivers, in particular to a piezoelectric inertial and piezoelectric worm-worm hybrid rotary driver. Background technique [0002] Piezoelectric inertia and piezoelectric worms are two commonly used driving methods that can simultaneously achieve long strokes and high precision. They each have their own advantages and disadvantages. The principle of piezoelectric inertial drive is to use the inertia of the driven object to make the driven object produce a controllable stepping motion through the slow and fast changes of the piezoelectric drive module in the feed direction. For piezo inertia drive, only one feed piezo drive module is required. The principle of piezoelectric worm drive is to complete the controllable stepping motion by orderly clamping-feeding-releasing the driven object. For piezoelectric worm actuation, not only the feeding piezoelectric driver module is required, but also the loose-cla...

Claims

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Application Information

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IPC IPC(8): H02N2/04
CPCH02N2/046
Inventor 章阳坤王美林
Owner GUANGDONG UNIV OF TECH
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