% Robust Control Toolbox.
% Version 2.0 28-Aug-92
% Copyright (c) 1988-92 by The MathWorks, Inc.
%
% Optional System Data Structure.
%    branch    - Extract branches from a tree.
%    graft     - Add a branch to a tree.
%    issystem  - Identify a system variable.
%    istree    - Identify a tree variable.
%    mksys     - Build tree variable for system.
%    tree      - Build a tree variable.
%    vrsys     - Returns standard system variable names.
%
% Model Building.
%    augss     - Plant augmentation (for state space models).
%    augtf     - Plant augmentation (for transfer functions).
%    interc    - General multivariable interconnected system.
%
% Model Conversions.
%    bilin     - Multivariable bilinear transformation.
%    des2ss    - Convert descriptor system to system state space via SVD.
%    lftf      - Linear fractional transformation.
%    sectf     - Sector transformation.
%    stabproj  - Stable/antistable projection.
%    slowfast  - Slow/fast decomposition.
%    tfm2ss    - Convert transfer functions to state-space models.
%
% Utility.
%    aresolv   - Generalized continuous time Riccati solver.
%    daresolv  - Generalized discrete time Riccati solver.
%    riccond   - Continuous time Riccati equation condition number.
%    driccond  - Discrete time Riccati equation condition number.
%    blkrsch   - Block ordered real Schur form via cschur.
%    cschur    - Ordered complex Schur form via complex Givens rotation.
%
% Multivariable Bode Plot.
%    cgloci    - Continuous characteristic gain loci.
%    dcgloci   - Discrete characteristic gain loci.
%    dsigma    - Discrete singular-value Bode plot.
%    muopt     - SSV upper bound for system with mixed real/complex uncertainty.
%    osborne   - SSV upper bound via Osborne method.
%    perron    - Perron eigenstructure SSV.
%    psv       - Perron eigenstructure SSV.
%    sigma     - Continuous singular-value Bode plot.
%    ssv       - Structure singular value Bode plot.
%
% Factorization Techniques.
%    iofc      - Inner-outer factorization (column type).
%    iofr      - Inner-outer factorization (row type).
%    sfl       - Left spectral factorization.
%    sfr       - Right spectral factorization.
%
% Model Reduction Methods.
%    balmr     - Truncated balanced model reduction.
%    bstschml  - Relative error Schur model reduction.
%    bstschmr  - Relative error Schur model reduction.
%    imp2ss    - Impulse response to state-space realization.
%    obalreal  - Ordered balanced realization.
%    ohklmr    - Optimal Hankel minimum degree approximation.
%    rschur    - Schur model reduction.
%
% Robust Control Synthesis Methods.
%    h2lqg     - Continuous time H_2 synthesis.
%    dh2lqg    - Discrete time H_2 synthesis.
%    hinf      - Continuous time H_infinity synthesis.
%    dhinf     - Discrete time H_infinity synthesis.
%    hinfopt   - Gamma-iteration of H_infinity synthesis.
%    normh2    - Calculate H_2 norm.
%    normhinf  - Calculate H_infinity norm.
%    lqg       - LQG optimal control synthesis.
%    ltru      - LQG loop transfer recovery.
%    ltry      - LQG loop transfer recovery.
%    youla     - Youla parameterization.
%
% Demonstrations.
%    accdemo   - Spring-mass benchmark problem.
%    dintdemo  - H_infinity design for double-integrator plant.
%    hinfdemo  - H_2 & H_infinity design examples
%                   fighter & large space structure.
%    ltrdemo   - LQG/LTR design examples -fighter.
%    mudemo    - Mu-synthesis examples.
%    mudemo1   - Mu-synthesis examples.
%    mrdemo    - Robust model reduction examples.
%    rctdemo   - Robust control toolbox demo - main menu.
