Documentation

Coordinate Systems

Represent aircraft and spacecraft motion and orientation

坐标系统是aerosp的一个重要组成部分ace systems. Use the coordinate system blocks to standardize units across your model, transform spatial representations and coordinate systems, describe the behavior of three- and six-degrees-of-motion bodies, and perform common aerospace math operations.

For example, axes transformation blocks support transformations such as those between:

  • Direction cosine matrices and quaternions

  • Rotation angles and quaternions

  • Earth-centered inertial (ECI) coordinates and azimuth or geodetic latitude, longitude, altitude (LLA) coordinates

  • Flat Earth positions from geodetic latitude, longitude, and altitude

For an overview of coordinate systems, seeAbout Aerospace Coordinate Systems.

Frequently Viewed Topics
    • Axes Transformations
      Transform axes of coordinate systems to different types, such as Euler angles to quaternions
    • Equations of Motion
      Implement 3DoF, 6DoF, and point mass equations of motion to determine body position, velocity, attitude, related values
    • Math Operations
      Blocks for common mathematical and matrix operations, including sine and cosine generation; 3-by-3 matrix operations

    Featured Examples

    Gravity Models with Precessing Reference Frame

    Gravity Models with Precessing Reference Frame

    This model shows how to implement various gravity models with precessing reference frames using Aerospace Blockset™ blocks. The Aerospace Blockset blocks are shown in red.
    Open Model
    HL-20项目可选FlightGear接口

    HL-20项目可选FlightGear接口

    This project shows how to model NASA's HL-20 lifting body with Simulink®, Stateflow® and Aerospace Blockset™ software. The vehicle model includes the aerodynamics, control logic, fault management systems (FDIR), and engine controls (FADEC). It also includes effects of the environment, such as wind profiles for the landing phase. The entire model simulates approach and landing flight phases using an auto-landing controller. To analyze the effects of actuator failures and wind gust variation on the stability of the vehicle, use the "Run Failure Analysis in Parallel" project shortcut. If Parallel Computing Toolbox™ is installed, the analysis is run in parallel. If Parallel Computing Toolbox™ is not installed, the analysis is run in serial. Visualization for this model is done via an interface to FlightGear, an open source flight simulator package. If the FlightGear interface is unavailable, you can simulate the model by closing the loop using the alternative data sources provided in the Variant block. In this block, you can choose a previously saved data file, a Signal Builder block, or a set of constant values. This example requires Control System Toolbox™.
    Open Example
    Was this topic helpful?
    Aerospace Blockset Documentation
    Other Documentation
    金宝app

    Try MATLAB, Simulink, and Other Products

    Get trial now