Non-similar redundancy electric steering device

Abstract

Provided is a non-similar redundancy electric steering device. The advanced power-by-wire technology and volumetric speed control principle are adopted, and two sets of motors drive a hydraulic pump system to directly drive a double-redundancy series cylinder. The device comprises a set of double-redundancy electro-hydrostatic servo mechanism (2) and a set of double-redundancy driving controller (7), wherein the double-redundancy electro-hydrostatic servo mechanism (2) is composed of an electro-hydraulic pump servo mechanism (1) and a double-variant motor pump source servo mechanism (4), and the double-redundancy driving controller (7) is composed of a control unit (8) and a driving unit (9); the electro-hydraulic pump servo mechanism (1) comprises an electro-hydraulic pump (10) and accessories, and the double-variant motor pump source servo mechanism (4) comprises a servo motor (6), a two-way variable pump (5) and accessories. The device can replace an original servo valve-controlled steering engine arranged on a vehicle to achieve high-reliability and high-power telex servo working and has the advantages of being low in energy consumption, small in size and weight and easy to install and maintain.

Description

technical field [0001] The invention relates to a steering gear for a steering gear, in particular to a steering gear for a dual-redundancy electro-hydraulic system. Background technique [0002] Generally, steering gears that control the movement attitude of aircraft, ships, rockets and other carriers generally adopt high-power servo devices with centralized oil source and servo valve control. This traditional mechanism makes the entire carrier full of hydraulic pipelines, which increases the weight and volume of the system; at the same time, problems such as "running, leaking and oil leakage" make the traditional mechanism low in efficiency and high in consumption; the traditional system is also inconvenient for device installation and maintenance , high production and maintenance costs and other shortcomings. [0003] At present, the new electro-hydraulic servo mechanisms researched to address the above shortcomings are basically in the theoretical research stage, and a ...

AI Technical Summary

Problems solved by technology

This traditional mechanism makes the entire carrier full of hydraulic pipelines, which increases the weight and volume of the system; at the same time, problems such as "running, leaking and oil leakage" make the traditional mechanism low in efficiency and high in consumption; the traditional system is also inconvenient for device installation and maintenance , high production and maintenance costs and other disadvantages

[0003] At present, the new electro-hydraulic servo mechanism researched in response to the above shortcomings is basically in the theoretical research stage, and a new integrated electric hydrostatic servo device (EHA) with practical application value has not yet been invented in China.

[0004] For safety considerations, the steering servo device generally adopts a redundant design, while domestic redundant electric hydrostatic servo devices are mostly in the theoretical research stage, and no feasible results have yet appeared.

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