Contact type position switch capable of eliminating step accumulative error of turn glass of piezoeletric motor
Contact type position switch capable of eliminating step accumulative error of turn glass of piezoeletric motor
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H01H 19/54, H02N 2/10
Qinghua Univ.
Chu Xiangcheng, Xing Zhengping, Li Longtu
Key Words:
Contact type position switch, eliminate, step accumulative error, turn glass, piezoeletric motor
The contact position switch container a pair of leading-in wires for controlling starting and stopping of piezoelectric motor, two groups of lugs which are mutually speed, correspondently distributed on these leading-in wires according to the requirement for controlling angle location and electrically connected with them and contact blade which can be connected with motor rotor and can make a pair of correspondent lugs produce electric short connection at angle location control position by means of electric contact. The described leading-in wires are a pair of conducting rings distributed on the peripheral insulating ring of rotor, and two groups of lugs are distributed according to vertical direction. When the motor is rotated to accurate location position, the contact blade is connected with one group of lugs to make leading-in wire produce short circuit to make motor stop and do not produce accumulative error.

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