Two-dimensional force feedback electro-hydraulic servo valve

Abstract

The invention provides a two-dimensional force feedback electro-hydraulic servo valve. The two-dimensional force feedback electro-hydraulic servo valve comprises a hydraulic amplifying mechanism and an electro-mechanical converter. The electro-mechanical converter comprises an armature of which a rotary shaft is arranged along the horizontal plane. The armature comprises beveled wing surfaces on the two sides, the center axes of the beveled wing surfaces are perpendicular to the horizontal plane and are straight upwards with a 180-degree arrayed feature. The two side of the armature are symmetrically provided with a first yoke and a second yoke. The two inner sides of the two yokes are arc-shaped. Coils are coiled around the outer sides of the yokes. The inner sidewalls of the two yokes are both provided with skewed slots, and the inclined directions of the side ends, adjacent to the beveled wing surfaces of the armature, of the skewed slots relative to the rotary shaft are the same. The side ends of beveled wings of the armatures are arc-shaped. The side ends of the beveled wings of the armature cross over the skewed slots and form four working air gaps with two camber surfaces, partitioned by the skewed slot, of the first yoke and two camber surfaces, partitioned by the skewed slot, of the second yoke. Two permanent magnets are erected on the upper portion and the lower portion between the two yokes correspondingly. The upper and lower crest surfaces of the armature are connected with two spring rods correspondingly. The ball head ends of the spring rods are movably inserted into ball sockets of spring push plates correspondingly.

Description

technical field [0001] The invention relates to the field of electro-hydraulic servo control components, in particular to a two-dimensional force feedback electro-hydraulic servo valve. Background technique [0002] Since its appearance in the 1940s, electro-hydraulic servo control technology has occupied a high-end position in electromechanical transmission and control technology due to its high power-to-weight ratio, large output force (torque) and excellent static and dynamic characteristics. Its core competitiveness has important applications in various key occasions such as aerospace, military weapons, ships, large power stations, steel, material testing machines and vibration tables. In the electro-hydraulic servo control system, the electro-hydraulic servo valve plays the role of electromechanical conversion and signal amplification, which has a decisive impact on the performance of the entire system to a large extent. [0003] In order to obtain ideal static and dyn...

AI Technical Summary

Problems solved by technology

[0007] In order to overcome the existing two-dimensional electro-hydraulic servo valve with direct position feedback, the helical groove structure on the inner surface of the valve sleeve has high processing cost, difficult to guarantee precision, low process

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