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Title:
DRIVING METHOD USING SMA LINE PAIR, AND ACTUATION STRUCTURE AND STORAGE MEDIUM
Document Type and Number:
WIPO Patent Application WO/2022/267196
Kind Code:
A1
Abstract:
A driving method using an SMA line pair, and an actuation structure and a storage medium, which relate to the technical field of actuators. The method comprises: providing an initial driving signal for an SMA line pair; acquiring a target feedback amount required for a movable element moving by a target displacement; measuring a first feedback amount of a first SMA line and a second feedback amount of a second SMA line; and according to the target feedback amount, the first feedback amount and the second feedback amount, continuously increasing the driving signal for the first SMA line by a first increment, and correspondingly decreasing the driving signal for the second SMA line by a first decrement, wherein the difference between the first increment and the first decrement satisfies a preset threshold value. Under an initial driving signal, corresponding driving signals are provided for a first SMA line and a second SMA line to respectively stretch and retract same, such that a movable element moves by a target displacement under the joint action of an SMA line pair, and the displacement precision is higher.

Inventors:
LIU SHULUN (CN)
JI SHUBIAO (CN)
CAI YAOQIAN (CN)
Application Number:
PCT/CN2021/111990
Publication Date:
December 29, 2022
Filing Date:
August 11, 2021
Export Citation:
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Assignee:
SEADEC TECH LTD (CN)
International Classes:
G03B13/34; G03B5/00
Foreign References:
CN109312727A2019-02-05
CN104982028A2015-10-14
CN102265032A2011-11-30
CN102770804A2012-11-07
US20100275592A12010-11-04
Attorney, Agent or Firm:
UNITALEN ATTORNEYS AT LAW (CN)
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