油壓於運動模擬系統之影響性

Abstract

在大多數的運動模擬系統中，多以油壓為動力源，但卻忽視油壓動態對整個系統的影響。因此在本研究中實際架設一組三軸飛行平台，以油壓作為動力系統，並探討其油壓誤差。 在本論文中，首先探討平台的工作空間及奇異點，使能設計合適的平台運動。然後以ARX模型做系統辨識，找出三個油壓系統(包括油壓缸及比例閥)的動態模型。並設計飛行動作，最後再以包含油壓動態之系統模型，模擬所設計之動作，以期預測真實狀況中，油壓在加速度與位置方面所造成的誤差，進而分析油壓系統對於平台運動的影響性。 本文的目的，除了強調油壓在運動模擬平台中所造成的影響，更希冀能藉由架設一完整的飛行平台系統，提供往後的平台運動設計者於設計前之一有用參考。

In most motion simulation systems, the hydraulics is utilized to be the driving power, but the influence of dynamics of hydraulic system is ignored. Hence, a 3 DOF flight simulator was constructed with the hydraulic power system, and the hydraulic errors are explored in this research. In this thesis, the workspace and singular points of the manipulator were explored first for designing suitable motions for the simulator. For hydraulics, the ARX method was used to identify the dynamic models of three hydraulic systems (including hydraulic cylinders and proportional valves). Finally, the designed flight tasks were simulated with system model which contained the dynamics of hydraulics for predicting the errors of acceleration and position caused by hydraulics in reality. And then the influence of hydraulics on manipulator motions was evaluated by discussing human sense of acceleration and position accuracy. The purpose of this thesis is not only to emphasize the influence of hydraulics on motion simulation system, but also to provide a useful reference for platform motion designers by constructing a complete flight simulator system.