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Straight-line type anti-jamming double-redundancy electromechanical actuator

An electromechanical actuator and anti-jamming technology, applied in the field of electromechanical servo, can solve problems such as screw jamming, achieve the effects of reducing axial size, increasing specific power, reducing center distance and radial size

Active Publication Date: 2018-02-23
BEIJING RES INST OF PRECISE MECHATRONICS CONTROLS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, electromechanical actuators usually ensure that the electrical system has redundant functions, but no effective measures have been taken for the problem of screw jamming

Method used

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  • Straight-line type anti-jamming double-redundancy electromechanical actuator

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Embodiment Construction

[0024] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0025] A linear anti-jamming dual-redundancy electromechanical actuator, such as figure 1 , figure 2 , Figure 5 As shown, it includes a first motor 6A, a second motor 6B, a first brake 15A, a second brake 15B, a ball spline gear pair 5, an outer screw 3, an inner screw 4, a first planetary reducer 16A, a second Planetary reducer 16B and transmission gear 13,

[0026] In the main working mode, the electronic control signal controls the second brake 15B to brake with power off, lock the output shaft of the second motor 6B, the ball spline gear pair 5 is in the locked state, lock the inner screw 4, and the first motor 6A drives the first planetary reducer 16A to run, drives the outer screw 3 to work, the outer screw 3 converts the rotary motion into a linear motion, and the inner screw 4 and the ball spline gear pair 5 follow the screw of the outer screw 3 ...

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Abstract

The invention discloses a straight-line type anti-jamming double-redundancy electromechanical actuator, and the electromechanical actuator has the characteristics of the anti-jamming and the double redundancy, namely a main working mode and a backup working mode which are mainly realized through a straight-line transmission mechanism. A main function component of the straight-line transmission mechanism is a nested roll-ball screw-rod pair which comprises an outer screw rod and an inner screw rod, wherein the outer screw rod mainly works, and the inner screw rod serves as the backup. Accordingto the straight-line type anti-jamming double-redundancy electromechanical actuator, the radial-direction occupation space is reduced by means of the nested layout, an axial-direction zero position length is shortened at the same time, and the specific power of the actuator is increased.

Description

technical field [0001] The invention relates to a linear anti-jamming double-redundancy electromechanical actuator, which is applied in highly reliable servo systems such as aviation and aerospace, and belongs to the field of electromechanical servo. Background technique [0002] Electromechanical actuators are widely used in the field of servo technology due to their high transmission precision, fast response and easy maintenance. Ball screw transmission is one of the common transmission forms of linear electromechanical actuators. Judging from the development status at home and abroad, high reliability is the most important factor restricting the wide application of electromechanical actuators in the aviation field. In order to improve the reliability of the electromechanical actuator, the electromechanical actuator needs to have the ability to work under failure. At present, electromechanical actuators usually ensure that the electrical system has redundant functions, b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H25/20F16H25/22H02K7/08H02K7/10
CPCH02K7/08H02K7/10F16H25/2015F16H25/2204F16H2025/204F16H25/205H02K7/06H02K2213/06
Inventor 牛涛董辉立于志远刘伟张少军
Owner BEIJING RES INST OF PRECISE MECHATRONICS CONTROLS
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