modectrl.hlp

MATLAB在飞行动力学和控制中应用的工具

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 Mode Controller
 ===============
 Subsystem of APILOT1, APILOT2, and APILOT3.

 The block Mode Controller supplies the switch-settings for the
 different autopilot modes. The systems APILOT2 and APILOT3 con-
 tain radio-navigation modes (Glideslope, Localizer, and Naviga-
 tion) which start in 'Armed' setting and switch over to 'Coupled'
 if some switch-criterion is satisfied. These switch-criteria are
 evaluated in the block Mode Controller. In the system APILOT1
 the radio-navigation modes have been omitted. In that case, the
 block Mode Controller only DEFINES the autopilot modes, but does
 not contain any mode-switching functions.

 Before starting a new simulation, double-click the block 'Select
 Mode and Reference Signals', or type APMODE at the Matlab com-
 mand line to define the autopilot modes (and hence, the initial
 switch-settings). The autopilot modes are stored in the vectors
 ymod1S, ymod2S, ymod1A, and ymod2A in the Matlab Workspace.
 These vectors are defined as follows:

   ymod1S/ymod2S: symmetrical autopilot modes
   ymod1A/ymod2A: asymmetrical autopilot modes

   1: initial autopilot setting
   2: second autopilot setting (used for radio-navigation modes
      to make it possible to switch from 'Armed' = initial phase
      to 'Coupled' = second phase)

 Symmetrical modes:
 ------------------
 ymodS = [symm. autopilot modes on/off ,
          symm. outer-loops on/off     ,
          Altitude Hold mode on/off    ,
          Altitude Select mode on/off  ,
          Glideslope mode on/off        ]

 with the following combinations for ymodS:

          Pitch Attitude Hold              :  [1 0 0 0 0]
          Altitude Hold / Glideslope Armed :  [1 1 1 0 0]
          Altitude Select                  :  [1 1 0 1 0]
          Glideslope Coupled               :  [1 1 0 0 1]

 Asymmetrical modes:
 -------------------
 ymodA = [asymm. autopilot modes on/off,
          asymm. outer-loops on/off    ,
          Heading Hold/Select on/off   ,
          VOR-Navigation mode on/off   ,
          Localizer mode on/off         ]

 with the following combinations for ymodA:

          Roll Attitude Hold               :  [1 0 0 0 0]
          Heading Hold/Heading Select/
                 NAV Armed/Localizer Armed :  [1 1 1 0 0]
          NAV Coupled                      :  [1 1 0 1 0]
          Localizer Coupled                :  [1 1 0 0 1]

 More info
 =========
 See the source-codes of GSSWITCH.M, LOCSWTCH.M, and NAVSWTCH.M
 for the switch-criteria used in Glideslope, Localizer, and NAV
 modes, respectively. See APMODE.M for more details on the mode-
 initialization of the autopilot.

 References
 ==========
 [1]  M.O. Rauw, A SIMULINK environment for Flight Dynamics and
      Control analysis - Application to the DHC-2 'Beaver',
      PART II! Graduate's thesis, Delft University of Technology,
      Faculty of Aerospace Engineering, Delft, 1993.

 [2]  P.N.H. Wever, Ontwerp en implementatie van de regelwetten
      van de De Havilland DHC-2 'Beaver' (in Dutch). Graduate's
      thesis, Delft University of Technology, Faculty of Aero-
      space Engineering, Delft, 1993.

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The FDC toolbox, Copyright Marc Rauw 1994-1998.