Pneumatic-hydraulic driven six-degree-of-freedom parallel motion platform system for motion simulation

Abstract

The invention provides a gas-liquid driven six-freedom parallel motion platform system for motion simulation. The system is provided with an upper platform, universal joints, hydraulic cylinder, cylinders, base universal joints, a base, pneumatic valves, hydraulic valves and displacement sensors. According to the invention, by taking quite large compressibility of gas into consideration, the system flexibility can be improved, a hydraulic portion can also provide proper damping and can improve the system rigidity, and combination of the two enables a motion platform to have the advantages of both rigidity and flexibility. Therefore, the gas-liquid driven six-freedom parallel motion platform system for motion simulation, provided by the invention, has the advantages of being higher in rigidity compared to conventional pneumatic and electric driving platforms and higher in flexible motion property compared to conventional hydraulic driving platforms, and improving the key feature of a motion simulator.

Description

technical field [0001] The patent of the present invention belongs to the technical field of motion simulation platform, in particular to a six-degree-of-freedom parallel platform system with a new structure. Background technique [0002] Motion simulation is the process of using virtual dynamics, virtual scenes, and virtual sounds to reproduce real motion sensations on a corresponding simulator. Sports simulation is mainly used to replace real equipment to train the operator's ability to control real equipment or experience a certain form of exercise. Sports simulation can greatly reduce the training cost of various sports operations. At present, most of the flight training of almost all civil and military aircraft pilots is completed on simulators. In addition, motion simulators are also widely used in various entertainment and other equipment. Decades of use experience have shown that motion simulation plays a very important role in the development of aviation, aerospac...

AI Technical Summary

Problems solved by technology

The advantages of the hydraulic drive method are high rigidity and high power-to-weight ratio, but the disadvantages are complex design and maintenance and high cost

The characteristic of the electric drive mode is that the speed and position accuracy of the actuator are high, and the system design and implementation are simple, but limited by the power of the motor, its carrying capacity is limited

The electro-hydraulic hybrid driving method uses servo motors to control hydraulic actuators, without the need for hydraulic valves and hydraulic pump stations, which greatly reduces the cost and difficulty of design and maintenance. Poor power and speed

[0005] At present, there are not many literature reports on the gas-liquid motion simulation system. As far as the inventor knows, there are almost no patent documents on the six-degree-of-freedom gas-liquid motion simulation system.

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