1、 help con trol system toolboxCon trol System ToolboxVersion 6.0 (R14) 05-May-2004Gen eral.ctrlpref-Set Con trol System Toolbox prefere nces.ltimodels-Detailed help on the various types of LTI models.ltiprops-Detailed help on available LTI model properties.Creat ing lin ear models.tf-Create tran sfer

2、 fun ctio n models.zpk-Create zero/pole/ga in models.ss, dss-Create state-space models.frd-Create a freque ncy resp onse data models.filt-Specify a digital filter.lti/set-Set/modify properties of LTI models.Data extractio n.tfdata-Extract nu merator(s) and denomin ator(s).zpkdata-Extract zero/pole/g

3、a in data.ssdata-Extract state-space matrices.dssdata-Descriptor version of SSDATA.frdata-Extract freque ncy resp onse data.Iti/get-Access values of LTI model properties.Con versio ns.tf-Con vers ion to tran sfer fun ctio n.zpk-Conversion to zero/pole/ga in.ss-Conversion to state space.frd-Conversio

4、n to freque ncy data.chg un its-Change un its of FRD model freque ncy poin ts.c2d-Continu ous to discrete con vers ion.d2c-Discrete to con ti nu ous conversion.d2d-Resample discrete-time model.System in terc onnections.append-Group LTI systems by appe nding in puts and outputs.parallel-Gen eralized

5、parallel connection (see also overloaded +).series-Gen eralized series conn ecti on (see also overloaded *).feedback-Feedback connection of two systems.lft-Gen eralized feedback in terc onn ecti on (Redheffer star product).connect-Derive state-space model from block diagram descripti on.System gain

6、and dyn amics.dcgain-D.C. (low freque ncy) gain.ban dwidth-System ban dwidth.lti/norm-Norms of LTI systems.pole, eig-System poles.zero-System (tra nsmissi on) zeros.pzmap-Pole-zero map.iopzmap-In put/output pole-zero map.damp-Natural freque ncy and damp ing of system poles.esort-Sort continu ous pol

7、es by real part.dsort-Sort discrete poles by magn itude.stabsep-Stable/un stable decompositi on.modsep-Regi on-based modal decompositi on.Time-doma in an alysis.ltiview-Resp onse an alysis GUI (LTI Viewer).step-Step resp on se.impulse-Impulse resp on se.in itial-Resp onse of state-space system with

8、give n in itial state.lsim-Resp onse to arbitrary in puts.gen sig-Gen erate in put sig nal for LSIM.covar-Covaria nee of resp onse to white no ise.Freque ncy-doma in an alysis.ltiview-Resp onse an alysis GUI (LTI Viewer).bode-Bode diagrams of the freque ncy resp on se.bodemag-Bode magn itude diagram

9、 only.sigma-Sin gular value freque ncy plot.nyquist-Nyquist plot.nichols-Nichols plot.margin-Gain and phase margins.allmargin-All crossover freque ncies and related gain/phase margins.freqresp-Freque ncy resp onse over a freque ncy grid.evalfr-Evaluate freque ncy resp onse at give n freque ncy.frd/i

10、n terp-In terpolates freque ncy resp onse data.Classical desig n.sisotool-SISO desig n GUI (root locus and loop shap ing tech niq ues).rlocus-Evans root locus.Pole placeme nt.place-MIMO pole placeme nt.acker-SISO pole placeme nt.estim-Form estimator give n estimator gain.reg-Form regulator give n st

11、ate-feedback and estimator gains.LQR/LQG desig n.Iqr, dlqr-Lin ear-quadratic (LQ) state-feedback regulator.iqry-LQ regulator with output weight ing.lqrd-Discrete LQ regulator for continu ous pla nt.kalma n-Kalma n estimator.kalmd-Discrete Kalma n estimator for con ti nu ous pla nt.lqgreg-Form LQG re

12、gulator given LQ gain and Kalman estimator.augstate-Augme nt output by appe nding states.State-space models.rss, drss-Ran dom stable state-space models.ss2ss-State coord in ate tran sformati on.canon-State-space canoni cal forms.ctrb-Con trollability matrix.obsv-Observability matrix.gram-Con trollab

13、ility and observability gramia ns.ssbal-Diago nal bala ncing of state-space realizati ons.balreal-Gramia n-based in put/output bala ncing.modred-Model state reducti on.mi nreal-Mini mal realizati on and pole/zero can cellati on.smi nreal-Structurally mi ni mal realizatio n.Time delays.hasdelay-True

14、for models with time delays.totaldelay-Total delay betwee n each in put/output pair.delay2z-Replace delays by poles at z=0 or FRD phase shift.pade-Pade approximati on of time delays.Model dime nsions and characteristics.class-Model type (tf, zpk, ss, or frd).size-Model sizes and order.lti/ndims-Numb

15、er of dime nsions.lti/isempty -True for empty models.isct-True for con ti nu ous-time models.isdt-True for discrete-time models.isproper-True for proper models.issiso-True for sin gle-i nput/s in gle-output models.reshape-Reshape array of lin ear models.Overloaded arithmetic operati ons.+ and -Add a

16、nd subtract systems (parallel conn ecti on).*-Multiply systems (series conn ecti on).-Left divide - sys1sys2 mea ns in v(sys1)*sys2./-Right divide - sys1/sys2 means sysl* in v(sys2).Aii-Powers of a give n system.-Pertra nspositi on.-Tran spositi on of in put/output map. -Con cate nate models along i

17、n puts or outputs.stack-Stack models/arrays along some array dime nsion.lti/i nv-In verse of an LTI system.conj-Complex conjugati on of model coefficie nts.Matrix equati on solvers.lyap, dlyap-Solve Lyap unov equati ons.lyapchol, dlyapchol - Square-root Lyap unov solvers.care, dare-Solve algebraic Riccati equ