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Fault-tolerant electromechanical actuator

A technology of actuators and linear actuators, applied in the direction of electromechanical devices, electric components, electrical components, etc., which can solve the problems of complexity and prone to failure.

Active Publication Date: 2007-06-13
THE BOEING CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The transmission between the motor and the load is inherently more complex than the piston and cylinder used in hydraulic actuators, and is also prone to failure

Method used

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  • Fault-tolerant electromechanical actuator
  • Fault-tolerant electromechanical actuator
  • Fault-tolerant electromechanical actuator

Examples

Experimental program
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Embodiment Construction

[0018] FIG. 1 is a cross-sectional view of a preferred embodiment of an electrodynamic and fault-tolerant electric actuator 10 .

[0019] Briefly, the actuator 10 includes a cylindrical housing 20 enclosing two or more integrated motor modules (three shown) 24, 30 and 34 capable of driving an output ram 12, The outer surface 16 of the actuator is a helical thread. Helical threads 18 (also referred to as "threads") on the face of output actuator 12 are threaded into one or more complementary "drive nuts" within the housing which engage threaded output actuator 12 and are able to rotate relative to the output jack 12 but are fixed laterally within the housing, ie they cannot move along the length of the output jack 12 . When the end of an output jack (not shown in FIG. 1 ) is attached to a machine, such as a control surface of an aircraft, the action of the lateral movement of the jack 12 will operate or control the machine to which the jack 12 is attached. machine.

[0020] ...

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PUM

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Abstract

The electric actuator includes two or more motors to drive thread actuating - cylinder. Each motor possesses armature. The armature drives thread roller screw engaged to thread actuating-cylinder. Each armature of each motor can engage to actuating - cylinder and / or separate from the actuating - cylinder independently. Armature of motor can be engaged to or separated from through thread roller screw. The end of screw is cone-shaped so that it can be raised to separated from the thread actuating - cylinder, or it can be lowered to engage to the thread actuating - cylinder.

Description

technical field [0001] The present invention relates to actuators. In the Merriam-Webster Collegiate Dictionary, Tenth Edition, "actuator" is defined as a mechanical device used to move or control something. Actuators are used to perform a variety of functions and bring many modern conveniences. Background technique [0002] For example, an airplane needs actuators to fly. Actuators are required for the flaps, spoilers and ailerons in each wing. Actuators at the tail control the rudder and elevator. An actuator in the fuselage opens and closes the doors that cover the landing gear. The actuator raises and lowers the landing gear. Actuators on each engine control the thrust reversers that decelerate the aircraft. [0003] In addition to their use in aircraft, actuators are also used in computer disk drives to control the position of the read / write heads by which data is stored and read from the disks. Actuators are also used in robots, ie in automated factories where p...

Claims

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Application Information

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IPC IPC(8): H02K7/06
Inventor 戴维·E·布兰丁阿茨奥·J·瓦塔纳贝
Owner THE BOEING CO
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