Isolated coupling air-floatation force measurement nozzle
A technology of isolation coupling and air flotation, applied in the field of multi-dimensional force measurement, can solve problems such as reducing the accuracy of multi-dimensional force measurement, and achieve the effect of improving measurement accuracy and avoiding coupling phenomenon.
Inactive Publication Date: 2013-08-14
HEFEI UNIV OF TECH
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Problems solved by technology
[0003] In order to solve the problem that inter-dimensional coupling will reduce the accuracy of multi-dimensional force measurement, the present invention provides an isolated coupling air flotation force measuring nozzle
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[0017] see figure 1 , figure 2 with image 3 , the isolation coupling air flotation force measuring nozzle includes a cylindrical body 9, the body 9 is provided with a through hole in the axial middle, and the middle part of the through hole on the body is provided with a concave cavity 10; the through hole in the upper half of the body is The quadrangular prism-shaped square hole is fitted with a quadrangular prism-shaped cylinder block 6 in clearance fit, and the axial middle part of the cylinder block 6 is a cylindrical hole; a side air cavity 15 is respectively opened on the four side walls of the cylinder block 6 outside, Each side air cavity 15 is provided with a side air hole 16 that runs through the side wall of the cylinder block; There is an upper air hole 2, and a lower air hole 8 is opened at the center of the lower end cover 7, and the upper air hole 2, the lower air hole 8 and the cylinder body 6 are coaxial; the diameters of the upper air hole 2 and the lower...
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Abstract
The invention relates to an isolated coupling air-floatation force measurement nozzle. The nozzle comprises a body, a cylinder is arranged in a through hole at the upper part of the body, more than three side air cavities are arranged on the external side wall of the cylinder, and a side air hole penetrating through the side wall of the cylinder is arranged in each side air cavity; an upper end cover and a lower end cover which are provided with air holes are arranged at the upper end and the lower end of the cylinder in a matching manner; a floating plate is arranged at the top surface of the upper end cover; a one-dimensional pressure sensor is arranged in the through hole at the lower part of the body; more than three air supply channels are arranged on the side wall of the body, one end of each air supply channel is communicated with the through hole at the upper part of the body and corresponds to the side air cavity on the cylinder, and the other end of each air supply channel is communicated with an axial bottom surface of the body; and an air exhaust trough is arranged on the body between adjacent air supply channels, and the upper part of each air exhaust trough is communicated with the empty cavity in the middle of the body. According to the invention, the one-dimensional pressure sensor can only measure the positive pressure applying on the floating plate, the interaction between the transverse force applied on the floating plate and the one-dimensional pressure sensor is isolated, so that the two are not interfered mutually, and the measurement precision is improved.
Description
technical field [0001] The invention belongs to the technical field of multidimensional force measurement, and in particular relates to an air flotation force measurement nozzle. Background technique [0002] In multi-dimensional force measurement, the coupling between dimensions will reduce the measurement accuracy. Inter-dimensional coupling means that when the multi-dimensional force sensor measures the force in a certain direction, it not only has a signal output in the direction of the force, but also produces an undue signal output in the direction perpendicular to the force, thus cause measurement errors. 200810019550.2 "Air-flotation multi-dimensional force sensor and multi-dimensional force measurement method" discloses an air-flotation multi-dimensional force measurement method. Its principle is to convert the nozzle by measuring the gas parameters (such as gas pressure) at a specific position in the air flotation system. The buoyancy force received by this metho...
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IPC IPC(8): G01L1/02G01L15/00
Inventor 黄斌范鹏飞魏新园唐群叶弘晗朱林涛
Owner HEFEI UNIV OF TECH