Large-displacement six-degree-of-freedom vibration platform

Abstract

The invention discloses a large-displacement six-degree-of-freedom vibration platform which comprises a lifting motion platform, a forward and backward horizontal vibration platform, a left and right horizontal vibration platform, a forward and backward swing platform, a left and right swing platform, a rotary vibration platform, an electric cylinder for pushing lifting motion, the electric cylinder for pushing the platform to carry out forward and backward horizontal vibration, the electric cylinder for pushing the platform to carry out left and right horizontal vibration, the electric cylinder for pushing the platform to swing back and forth, the electric cylinder for pushing the platform to swing left and right, the electric cylinder for pushing the platform to carrying out rotary vibration, a horizontal roller for vibrating left and right, the horizontal roller for moving back and forth, an orbit, a guide wheel, a guide rail for vertical motion and a bottom frame of the overall vibration platform. By the large-displacement six-degree-of-freedom vibration platform, individual motion in six-degree-of-freedom directions is achieved; combined motion of six degrees can be achieved; the displacement is large; the response speed is high; motion of a ship on the sea can be simulated; the vibration effect of the vibration platform is greatly improved, so that the adaptability of the vibration platform is greatly improved.

Description

technical field [0001] The invention relates to a six-degree-of-freedom motion platform, in particular to a large-displacement six-degree-of-freedom vibration table. Background technique [0002] In the prior art, a six-degree-of-freedom motion platform generally consists of six oil cylinders (or electric cylinders), six upper and lower universal hinges, and two upper and lower platforms. The lower platform is fixed on the foundation, and the movement of the upper platform in six degrees of freedom (X, Y, Z, α, β, γ) in space can be completed by means of the telescopic movement of six acting cylinders, so that various spatial movement postures can be simulated . It can be widely used in various training simulators such as flight simulators, ship simulators, naval helicopter take-off and landing simulation platforms, tank simulators, car driving simulators, train driving simulators, earthquake simulators, dynamic movies, entertainment equipment, etc. , can be used in the do...

AI Technical Summary

Problems solved by technology

The Institute of Electro-hydraulic Servo Simulation and Test System of Harbin Institute of Technology has developed a three-way six-degree-of-freedom hydraulic vibration test system. The large-displacement six-degree-of-freedom vibration table has eight exciters, four vertically There are two exciters, which belong to the drive redundancy structure. The system has high rigidity, strong bearing capacity, and high acceleration. It is suitable for applications that require large loads and high accelerations, but the control is more complicated. It is easy to generate internal force coupling between the devices, which may cause the vibration table to be unable to move in severe cases

[0005] Therefore, the existing six-degree-of-freedom vibration has decoupling problems, and if the design is not good, there will be a problem of self-locking of the vibration table, which cannot meet the needs of large-scale, which restricts the further development of six-degree-of-freedom

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