Control System functions

Control System functions

Description

Algorithms for designing, analyzing and tuning linear control systems.

• abcdchk - Verifies the dimensional compatibility of matrices A, B, C, and D.

• acker - Pole placement gain selection using Ackermann's formula.

• append - Appends the inputs and outputs of the two models.

• augstate - Append state vector to output vector.

• balreal - Gramian-based balancing of state-space realizations.

• bdschur - Block-diagonal Schur factorization.

• bode - Bode plot of frequency response, magnitude and phase data.

• c2d - Convert model from continuous to discrete time.

• care - Continuous-time algebraic Riccati equation solution.

• cloop - Feedback connection of multiple models.

• compreal - Companion realization of transfer functions.

• ctrb - Controllability of state-space model.

• ctrbf - Compute controllability staircase form.

• d2c - Convert model from discrete to continuous time.

• damp - Natural frequency and damping ratio.

• dare - Discret-time algebraic Riccati equation solution.

• dcgain - Low-frequency (DC) gain of LTI system.

• dlqr - Linear-quadratic (LQ) state-feedback regulator for discrete-time state-space system.

• dlyap - Discrete-time Lyapunov equations.

• dsort - Sort discrete-time poles by magnitude.

• esort - Sort continuous-time poles by real part.

• evalfr - Evaluate frequency response at given frequency.

• feedback - Feedback connection of multiple models.

• freqresp - Evaluate system response over a grid of frequencies.

• gensig - Create periodic signals for simulating system response.

• gram - Controllability and observability Gramians.

• hsvd - Hankel singular values of dynamic system.

• impulse - Impulse response plot of dynamic system.

• initial - System response to initial states of state-space model.

• isct - Checks if dynamic system model is in continuous time.

• isdt - Checks if dynamic system model is in discret time.

• islti - Checks if variable is an linear model tf, ss or zpk.

• issiso - Checks if dynamic system model is single input and single output.

• isstatic - Checks if model is static or dynamic.

• kalman - Design Kalman filter for state estimation.

• lqe - Kalman estimator design for continuous-time systems.

• lqed - Calculates the discrete Kalman estimator configuration based on a continuous cost function.

• lqr - Linear-Quadratic Regulator (LQR) design.

• lqry - Form linear-quadratic (LQ) state-feedback regulator with output weighting.

• lsim - Plot simulated time response of dynamic system to arbitrary inputs.

• lyap - Continuous Lyapunov equation solution.

• minreal - Minimal realization or pole-zero cancellation.

• nyquist - Nyquist plot of frequency response.

• obsv - Observability of state-space model.

• obsvf - Compute observability staircase form.

• ord2 - Generate continuous second-order systems.

• padecoef - Computes the Pade approximation of time delays.

• parallel - Parallel connection of two models.

• pole - Poles of dynamic system.

• series - Series connection of two models.

• ss - State-space model.

• ss2tf - Convert state-space representation to transfer function.

• ssdata - Access state-space model data.

• ssdelete - Remove inputs, outputs and states from state-space system.

• ssselect - Extract subsystem from larger system.

• step - Step response plot of dynamic system.

• tf - Constructs a transfer function model.

• tf2ss - Convert transfer function filter parameters to state-space form.

• tfdata - Access transfer function model data.

• tzero - Invariant zeros of linear system.

• zero - Zeros and gain of SISO dynamic system.