DADiSP/Controls - Analogue and Digital Controls Module

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DADiSP Software Module - Analogue and Digital Controls

Controls Functions

DADiSP/Controls includes over 40 standalone functions. The following table is a summary of each function.

Analysis and Simulation

bode	Produce Bode magnitude and phase plots
nyquist	Generate Nyquist Plot
fstats	Calculate frequency response characteristics from Bode plot
dbode	Generate Bode plots for a discrete system
dnyquist	Produce Nyquist plot for a discrete system
dfstats	Calculate frequency response characteristics from discrete Bode plot
setfunit	Set units to be used by frequency response macros
pzmap	Plot pole and zero locations in the complex plane
rtlocus	Generate Root Locus Plot
pzgrid	Overlay a grid of constant natural frequencies and damping ratios
dpzmap	Plot location of the poles and zeros of a discrete system
drtlocus	Generate Root Locus Plot for a discrete system
dpzgrid	Overlay a grid of constant discrete natural frequencies and damping ratios
cimpulse	Calculate impulse response of a continuous system
cstep	Evaluate step response of a continuous system
cramp	Calculate response of a continuous system to ramp input
csim	Calculate response of a continuous system to specified input
csiminit	Calculate response of a continuous system to specified input and initial conditions
dimpulse	Calculate impulse response of a discrete system
dstep	Evaluate step response of a discrete system
dramp	Calculate response of a discrete system to ramp input
dsim	Calculate response of a discrete system to specified input
dsiminit	Calculate response of a discrete system to specified input and initial conditions
tstats	Calculate performance characteristics from continuous or discrete step response plot

Model Transformations

connect	Produce one composite model from two smaller ones
cloop	Transform open-loop model into its closed-loop equivalent
cloopf	Produce closed-loop transfer fcn for a system with open-loop & feedback dynamics
delay	Model a simple delay in a continuous system
delay2	Model a delay in a continuous system with a higher order approximation
c2disc	Produce discrete model: take Z-transform with zero order hold of the continuous system
c2dbil	Produce the bilinear discrete equivalent of a continuous system
c2dback	Calculate discrete equivalent via the backward integration method
c2delayY	Produce discrete model: take Z-transform with zero order hold with processing delay
dcgain	Calculate DC gain of a continuous system
cresolv	Produce the resolvant matrix of a continuous system
d2cont	Perform inverse Z-transform with zero order hold to produce the continuous model
d2cbil	Produce inverse of the bilinear transform to convert discrete model to continuous equivalent
d2cback	Transform discrete transfer function to continuous equivalent via the inverse of the backward integration method

Off the Shelf Controllers

pid	Design a proportional plus integral plus derivative controller
pi	Design a proportional plus integral controller
pd	Design a proportional plus derivative controller
lagleadm	Design a lag or lead compensator
dpid	Design a discrete proportional plus integral plus derivative controller
dpi	Design a discrete proportional plus integral controller
dpd	Design a discrete proportional plus derivative controller compensator
dlagleadm	Design the discrete equivalent of a continuous lag or lead
dsgn2ordm	Design a 2nd order continuous system

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