CACSD (Computer Aided Control Systems Design)

• Formal representations and conversions
  • abcd — state-space matrices
  • cont_frm — transfer to controllable state-space
  • dbphi — frequency response to phase and magnitude representation
  • des2ss — descriptor to state-space
  • des2tf — descriptor to transfer function conversion
  • frep2tf — transfer function realization from frequency response
  • lsslist — Scilab linear state space function definition
  • markp2ss — Markov parameters to state-space
  • sm2des — system matrix to descriptor
  • sm2ss — system matrix to state-space
  • ss2des — (polynomial) state-space to descriptor form
  • ss2ss — state-space to state-space conversion, feedback, injection
  • ss2tf — conversion from state-space to transfer function
  • tf2des — transfer function to descriptor
  • tf2ss — transfer to state-space
• Plot and display
  • black — Black-Nichols diagram of a linear dynamical system
  • bode — Bode plot
  • bode_asymp — Bode plot asymptote
  • evans — Evans root locus
  • gainplot — magnitude plot
  • hallchart — Draws the Hall chart
  • m_circle — plots the complex plane iso-gain contours of y/(1+y) (obsolete)
  • nicholschart — Nichols chart
  • nyquist — nyquist plot
  • phaseplot — frequency phase plot
  • sgrid — s-plane grid lines.
  • show_margins — display gain and phase margin and associated crossover frequencies
  • svplot — singular-value sigma-plot
  • zgrid — zgrid plot
• abinv — AB invariant subspace
• arhnk — Hankel norm approximant
• arl2 — SISO model realization by L2 transfer approximation
• arma — Scilab arma library
• arma2p — extract polynomial matrices from ar representation
• arma2ss — transform an armax data structure into state space representation.
• armac — Scilab description of an armax process
• armax — armax identification
• armax1 — armax identification
• arsimul — armax simulation
• augment — augmented plant
• balreal — balanced realization
• bilin — general bilinear transform
• bstap — hankel approximant
• cainv — Dual of abinv
• calfrq — frequency response discretization
• canon — canonical controllable form
• ccontrg — Central H-infinity continuous time controller
• cls2dls — bilinear transform
• colinout — inner-outer factorization
• colregul — removing poles and zeros at infinity
• cont_mat — controllability matrix
• contr — controllability, controllable subspace, staircase
• contrss — controllable part
• copfac — right coprime factorization of continuous time dynamical systems
• csim — simulation (time response) of linear system
• ctr_gram — controllability gramian
• damp — Natural frequencies and damping factors.
• dcf — double coprime factorization
• ddp — disturbance decoupling
• dhinf — H_infinity design of discrete-time systems
• dhnorm — discrete H-infinity norm
• dscr — discretization of linear system
• dsimul — state space discrete time simulation
• dt_ility — detectability test
• dtsi — Continuous time dynamical systems stable anti-stable decomposition
• equil — balancing of pair of symmetric matrices
• equil1 — balancing (nonnegative) pair of matrices
• feedback — feedback operation
• findABCD — discrete-time system subspace identification
• findAC — discrete-time system subspace identification
• findBD — initial state and system matrices B and D of a discrete-time system
• findBDK — Kalman gain and B D system matrices of a discrete-time system
• findR — Preprocessor for estimating the matrices of a linear time-invariant dynamical system
• findx0BD — Estimates state and B and D matrices of a discrete-time linear system
• flts — time response (discrete time, sampled system)
• fourplan — augmented plant to four plants
• freq — frequency response
• freson — peak frequencies
• fspec — spectral factorization of continuous time dynamical systems
• fspecg — stable factorization of continuous time dynamical systems
• fstabst — Youla's parametrization of continuous time linear dynmaical systems
• g_margin — gain margin and associated crossover frequency
• gamitg — H-infinity gamma iterations for continuous time systems
• gcare — Continuous time control Riccati equation
• gfare — Continuous time filter Riccati equation
• gfrancis — Francis equations for tracking
• gtild — tilde operation
• h2norm — H2 norm of a continuous time proper dynamical system
• h_cl — closed loop matrix
• h_inf — Continuous time H-infinity (central) controller
• h_inf_st — static H_infinity problem
• h_norm — H-infinity norm
• hankelsv — Hankel singular values
• hinf — H_infinity design of continuous-time systems
• imrep2ss — state-space realization of an impulse response
• inistate — Estimates the initial state of a discrete-time system
• invsyslin — system inversion
• kpure — continuous SISO system limit feedback gain
• krac2 — continuous SISO system limit feedback gain
• lcf — Continuous time dynamical systems normalized coprime factorization
• leqr — H-infinity LQ gain (full state)
• lft — linear fractional transformation
• lin — linearization
• linf — infinity norm
• linfn — infinity norm
• linmeq — Sylvester and Lyapunov equations solver
• lqe — linear quadratic estimator (Kalman Filter)
• lqg — LQG compensator
• lqg2stan — LQG to standard problem
• lqg_ltr — LQG with loop transform recovery
• lqr — LQ compensator (full state)
• ltitr — discrete time response (state space)
• macglov — Continuous time dynamical systems Mac Farlane Glover problem
• minreal — minimal balanced realization
• minss — minimal realization
• mucomp — mu (structured singular value) calculation
• narsimul — armax simulation (using rtitr)
• nehari — Nehari approximant of continuous time dynamical systems
• noisegen — noise generation
• nyquistfrequencybounds — Computes the frequencies for which the nyquist locus enters and leaves a given rectangle.
• obs_gram — observability gramian
• obscont — observer based controller
• observer — observer design
• obsv_mat — observability matrix
• obsvss — observable part
• p_margin — phase margin and associated crossover frequency
• parrot — Parrot's problem
• pfss — partial fraction decomposition
• phasemag — phase and magnitude computation
• plzr — pole-zero plot
• pol2des — polynomial matrix to descriptor form
• ppol — pole placement
• prbs_a — pseudo random binary sequences generation
• projsl — linear system projection
• repfreq — frequency response
• ric_desc — Riccati equation
• ricc — Riccati equation
• riccati — Riccati equation
• routh_t — Routh's table
• rowinout — inner-outer factorization
• rowregul — removing poles and zeros at infinity
• rtitr — discrete time response (transfer matrix)
• sensi — sensitivity functions
• sident — discrete-time state-space realization and Kalman gain
• sorder — computing the order of a discrete-time system
• specfact — spectral factor
• ssprint — pretty print for linear system
• st_ility — stabilizability test
• stabil — stabilization
• sysfact — system factorization
• syslin — linear system definition
• syssize — size of state-space system
• time_id — SISO least square identification
• trzeros — transmission zeros and normal rank
• ui_observer — unknown input observer
• unobs — unobservable subspace
• zeropen — zero pencil