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Motion control method and device for stick-slip inertial piezoelectric actuator

A piezoelectric driver, stick-slip technology, applied in piezoelectric effect/electrostrictive or magnetostrictive motors, generators/motors, electrical components, etc. The effect of improving drive accuracy

Active Publication Date: 2019-05-28
SUZHOU UNIV
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a motion control method and device of a stick-slip inertial piezoelectric driver, which can solve the problem that the technology cannot adjust the motion speed of the motion block

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  • Motion control method and device for stick-slip inertial piezoelectric actuator
  • Motion control method and device for stick-slip inertial piezoelectric actuator
  • Motion control method and device for stick-slip inertial piezoelectric actuator

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Embodiment Construction

[0046] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0047] figure 1 It is a schematic structural diagram of a motion control system of a stick-slip inertial piezoelectric driver provided by an embodiment of the present application. The system includes a stick-slip inertial drive platform 110, which includes a stick-slip inertial piezoelectric driver 111 and a moving block 112 driven by the stick-slip inertial piezoelectric driver 111; A signal generating device 120 connected to the piezoelectric driver 110 ; a displacement sensor 113 provided on the moving block 112 ; and a host computer 130 connected to the displacement sensor 113 .

[0048] The signal generating device 120 is used for sending a driving signal to the sti...

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Abstract

The invention relates to a motion control method and device for a stick-slip inertial piezoelectric actuator, and belongs to the technical field of driving control. The method comprises the steps: obtaining a target position and a target speed of a moving block; acquiring the current displacement and the current speed of the moving block; determining whether the current speed is the same as the target speed or not; adjusting the signal frequency of the driving signal based on a PID control algorithm to adjust the current speed of the moving block when the current speed is different from the target speed; determining the distance between the moving block and the target position according to the current displacement; driving a moving block to perform nano-scale motion towards a target position based on the PID control algorithm through using a stick-slip inertial piezoelectric driver when the distance is smaller than the scanning mode distance. The method can solve the problem that the movement speed of a moving block cannot be adjusted in the prior art. The method can achieve the adjustment of the position and the speed, and improves the driving precision of the stick-slip type inertial piezoelectric actuator.

Description

technical field [0001] The invention relates to a motion control method and device of a stick-slip inertial piezoelectric driver, belonging to the technical field of drive control. Background technique [0002] The stick-slip inertial piezoelectric actuator is a device that uses the difference between inertial force and frictional force to achieve precise drive positioning. The stick-slip inertial piezoelectric actuator includes two working modes: stepping working mode and scanning working mode. Among them, the stepping working mode adopts periodic driving signal input for coarse adjustment and driving positioning; the scanning working mode adopts high-resolution fine-tuning voltage signal input for precise feed compensation and micro-positioning. [0003] However, due to the nonlinear characteristics of the piezoelectric ceramic itself, the assembly error of the stick-slip inertial piezoelectric actuator, and the inconsistent wear of the platform, the actual motion of the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02N2/06
Inventor 钟博文朱杰王振华孙立宁
Owner SUZHOU UNIV
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