Six-degree-of-freedom platform based on digital hydraulic cylinders

Abstract

The invention discloses a six-degree-of-freedom platform structure and control mode based on digital hydraulic cylinders. The six-degree-of-freedom platform includes an upper platform body, a base, adrive mechanism and an electro-hydraulic control system, wherein the drive mechanism is connected with the upper platform body and a lower platform body; the electro-hydraulic control system controlsthe drive mechanism to act; the drive mechanism comprises six evenly arranged digital hydraulic cylinders; the upper platform body is composed of one circular outer mask plate, and groove steels of the upper platform body and the lower platform body are distributed in a triangular shape to enable the structure to be more compact and firm; two connected digital hydraulic cylinders are connected with the upper platform body through a composite ball hinge, and two digital hydraulic cylinders are independently connected to a bottom seat of the lower platform body through hooker hinge seats; and the electro-hydraulic control system gives a controller an instruction through a main control computer to control the extended length of the six cylinders through position reverse junction and obtain actual attitude information through position positive solution, and by comparing with specified information, attitude servo control can be achieved and control precision of the platform is ensured.

Description

technical field [0001] The invention belongs to the field of flight simulators, in particular to a six-free platform structure based on a digital hydraulic cylinder. Background technique [0002] Due to its extremely broad application prospects, the six-degree-of-freedom motion platform has aroused extensive research interest in domestic and foreign scientific research and institutions in recent years. The six-degree-of-freedom motion platform is composed of 6 hydraulic cylinders, 6 upper and lower universal hinges and 2 upper and lower platforms. The lower platform is fixed on the foundation, and with the help of the telescopic movement of 6 hydraulic cylinders, the movement of the upper platform in 6 degrees of freedom in space can be completed, so that various spatial movement postures can be simulated, and it can be widely used in various training simulators. [0003] The traditional servo hydraulic control six-degree-of-freedom motion platform adopts a hydraulic servo ...

AI Technical Summary

Problems solved by technology

[0006] The invention solves the problem of complex traditional hydraulic servo control, high pollution and troublesome maintenance, and provides a digital hydraulic system that not only retains the large carrying capacity of the existing large six-degree-of-freedom platform, but also has fast response speed, simple structure and convenient maintenance. Cylinder-controlled six-degree-of-freedom platform

Images