Vibration active control type axial plunger pump with magnetic bearings

Abstract

The invention discloses a vibration active control type axial plunger pump with magnetic bearings. The vibration active control type axial plunger pump with the magnetic bearing comprises a shell, a stepped driving shaft, a swash plate, a plunger moving assembly, a cylinder body, a radial cylinder body magnetic control outer ring, a first radial permanent magnet bearing, a second radial permanentmagnet bearing and an axial positioning magnetic control bearing, wherein the radial cylinder body magnetic control outer ring acquires a vibration signal in real time through a displacement sensor, the radial cylinder body magnetic control outer ring is adjusted according to the vibration, the first radial permanent magnet bearing and the second radial permanent magnet bearing realize a suspension state of the stepped driving shaft through the principle of the same magnetic repulsion, and the axial positioning magnetic control bearing regulates and controls electromagnetic force by controlling the magnitude of current so as to ensure the axial positioning of the driving shaft. According to the vibration active control type axial plunger pump with the magnetic bearings and the control method thereof, the vibration of the cylinder body is monitored and controlled in real time while the driving shaft is suspended, friction among the bearings and the driving shaft is reduced, the dynamicstability of the cylinder body is improved, and the stability and reliability of the axial plunger pump are improved.

Description

technical field [0001] The invention belongs to the technical field of axial plunger pumps, in particular to an active vibration control axial plunger pump with magnetic bearings. Background technique [0002] Axial piston pumps have the advantages of small size, large power-to-weight ratio, and various variable modes, and have been widely used in construction machinery, ocean engineering, aerospace and other fields. As one of the core components of the axial piston pump, the rotor system is inevitably eccentric and unbalanced due to factors such as structural constraints, processing effects, and external loads. Under high-speed and high-pressure working conditions, the cylinder pose of the traditional axial piston pump cannot be controlled, and instability such as cylinder overturning is prone to occur, which affects the reliability and life of the axial piston pump. [0003] The present invention proposes an active vibration control axial piston pump with magnetic bearing...

AI Technical Summary

Problems solved by technology

Under high-speed and high-pressure working conditions, the cylinder body posture of the traditional axial piston pump cannot be controlled, and instability such as cylinder body overturning is prone to occur, which affects the reliability and life of the axial piston pump

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