Bidirectional Rotary Damper Based on Cylindrical Magnet Pair and Its Control Method

Abstract

The invention discloses a bidirectional rotation damper based on a cylinder magnet pair and a control method thereof. The damper is characterized in that a sintering neodymium iron boron cylinder magnet pair which is radially magnetized is employed in the damper; the magnet pair is composed of a first cylinder magnet and a second cylinder magnet; the first cylinder magnet is fixedly embedded in a center shaft; the second cylinder magnet is fixedly arranged at a circumferential portion, with the radius being R, in a barrel; the center shaft is located at the center axis of the barrel; the center shaft and the barrel are coaxial and can rotate relatively; and magnetic lines of the first and second cylinder magnets are distributed in the radial direction of the center shaft. According to the invention, the damper is constant in output damping force, is high in zero point positioning accuracy, is free of sealing and electric control, can be widely applied, is simple and compact in structure, is convenient to use, and is reliable in performance.

Description

technical field [0001] The invention relates to a damper, more specifically a bidirectional rotary damper based on a cylindrical magnet pair and a control method thereof, which can provide damping force feedback. Background technique [0002] Damping devices are based on the principle of generating friction or viscous force to produce resistance to movement, and are widely used in energy absorption and shock absorption, slowing down the movement trend, and safety buffering. Damping devices in the prior art can be roughly divided into two types: medium-type damping such as magnetorheological fluid, hydraulic viscous oil, and damping sand, and elastic-type damping such as springs, flexible steel wire ropes, and electromagnets. This type of damper in the prior art has the following deficiencies in specific applications: the medium-type damper has the sealing problem of the damping medium, its damping coefficient is easily affected by the external environment temperature and fri...

AI Technical Summary

Problems solved by technology

This type of damper in the prior art has the following deficiencies in specific applications: the medium-type damper has the sealing problem of the damping medium, its damping coefficient is easily affected by the external environment temperature and frictional heat, the damping force output is not constant, and the damping medium There are noise and wear problems during use; elastic damping devices are prone to fatigue, overload deformation, low zero positioning accuracy, and short service life after long-term use; in addition, magnetorheological fluids and electromagnetic damping devices often require complex configurations The circuit control structure brings about an increase in cost, and it is inconvenient in the field and other occasions

Images