针

Full-Envelope Stitched Simulation from Individual Linear Models and Trim Data

Full-Envelope Stitched Simulation from Individual Linear Models and Trim Data

图1:针版本1.1

针 is a comprehensive software capability that allows a non-expert to create and verify a stitched 仿真模型. This tool features a user interface and MATLAB-based infrastructure in which the user supplies point linear models and trim data, and 针 generates a Simulink stitched model block and corresponding MATLAB data file. 缝的 仿真模型 can then be used for continuous, real-time full-envelope piloted simulation or flight control evaluation within hardware-in-the-loop simulation.

Background

Model stitching is the technique of combining or “stitching” together individual linear models and trim data for discrete flight conditions to produce a continuous, full flight-envelope 仿真模型. In this technique, the stability and control derivatives and trim data for each discrete point model are stored as a function of key parameters such 如空速和高度. The look-up of trim and derivatives is combined with nonlinear equations of motion and nonlinear gravitational force equations to produce a continuous, quasi-nonlinear stitched 仿真模型.

关键特性

  • Intuitive user interface to guide the user through the entire process of generating 缝合模型
  • Support for rotorcraft and fixed-wing aircraft
  • Processing of raw flight-test data
  • Automated generation/verification of Simulink stitched model
  • Accurate extrapolation to off-nominal conditions (speed, weight, center of gravity, 惯性,高度)
  • 直接访问CIFER® database to import identified point models for stitched model generation
  • Interactive plotting utilities
  • Help documentation via links on each screen

针版本1.1 is available as of 2022年3月

无花果. 1:项目设置

图2:项目设置

无花果. 2: Anchor point models and trim data

无花果ure 3: Anchor Point Models and Trim Data

无花果. 3: Stitched model linearization verification 

无花果ure 4: Stitched Model Linearization Verification 

 

销售 & 其他查询请联系
圣何塞州立大学 研究基金会 
flight-control-sta@litpliant.net

参考文献

  1. 托拜厄斯,E. L. 和蒂施勒，M. B., “A Model Stitching Architecture for Continuous Full Flight-Envelope Simulation of Fixed-Wing Aircraft and Rotorcraft from Discrete-Point 线性模型，”U.S. Army AMRDEC Special Report RDMR-AF-16-01, April 2016.
  2. 托拜厄斯,E.桑德斯，F.蒂施勒，M., “Full-Envelope Stitched Simulation Model of a Quadcopter Using 针,” American Helicopter Society 74th Annual Forum, Phoenix, 2018年5月，AZ.