Symmetrical two-dimensional force sensor and tractor

Abstract

The invention provides a symmetric two-dimensional force sensor and a tractor. The sensor comprises a bearing cylinder, a first two-dimensional force sensing structure and a second two-dimensional force sensing structure; the first two-dimensional force sensor and the second two-dimensional force sensor have the same structure and are symmetrically arranged; the first two-dimensional force sensing structure comprises an excitation magnetic core, the excitation magnetic core comprises two pairs of excitation magnetic poles, each pair of excitation magnetic poles are radially and symmetrically arranged, the two pairs of excitation magnetic poles are vertically and crossly arranged on the same cross section of the bearing cylinder, and excitation coils are respectively wound on the end surfaces of the excitation magnetic poles; and two induction magnetic cores are symmetrically installed on the two axial sides of the excitation magnetic core in the bearing cylinder, each induction magnetic core comprises two induction magnetic poles which are symmetrically arranged in the radial direction, the two induction magnetic poles on each induction magnetic core are perpendicular to the same pair of excitation magnetic poles, induction coils are wound around the induction magnetic poles, and the induction coils are jointly connected to form a differential output loop.

Description

technical field [0001] The invention belongs to the field of force sensors, in particular to a symmetrical two-dimensional force sensor and a tractor. Background technique [0002] The statements in this section merely provide background information related to the present invention and do not necessarily constitute prior art. [0003] In the electro-hydraulic lifting control process of high-horsepower tractors, soil resistance is one of the main control signals. As the main signal receiving device of the electro-hydraulic lift control, the force sensor plays an irreplaceable role in it, and is one of the core components of the electro-hydraulic lifter. The performance of the force sensor directly affects the quality of the hanging agriculture. The working environment of the force sensor requires it not only to have a large heavy load and bearing capacity, but also to have a good linear output under the premise of slight strain. , that is, has a high sensitivity, and there ...

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Problems solved by technology

The performance of the force sensor directly affects the quality of the hanging agriculture. The working environment of the force sensor requires it not only to have a large heavy load and bearing capacity, but also to have a good linear output under the premise of slight strain. , that is, it has high sensitivity, and there is no related technology that can solve the above problems well

[0004] The Chinese utility model patent with application number 201821961305.9 discloses a two-dimensional force sensor, but the sensitivity of the two-dimensional force sensor cannot meet some special requirements, so a force sensor that can greatly improve the sensitivity is urgently needed

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