LabVIEW Control Design and Simulation Module

CD Construct Zero-Pole-Gain Model VI

  • Updated2023-03-14
  • 10 minute(s) read

CD Construct Zero-Pole-Gain Model VI

Owning Palette: Model Construction VIs

Requires: Control Design and Simulation Module

Creates a zero-pole-gain representation of a system using the Zeros, Poles, Gain, Delay, and Sampling Time (s). This VI also produces a zero-pole-gain model which specifies the data in symbolic form. You must manually select the polymorphic instance to use.

Details  

CD Construct Zero-Pole-Gain Model (SISO)

Complete Complex Conjugate? specifies, when TRUE, to calculate the complex conjugate for any zero or pole that has only a real or pure complex root specified. The default is FALSE.
Sampling Time (s) defines whether the model represents a continuous-time system or a discrete-time system. If the model represents a continuous-time system, Sampling Time (s) must equal 0. If the model represents a discrete-time system, Sampling Time (s) must be greater than 0 and equal to the sampling rate, in seconds, of the discrete system. A value of -1 specifies that Sampling Time (s) is irrelevant. The default is 0.
Note  If you use the inputs to create a continuous-time system, setting the Sampling Time (s) to a value greater than 0 does not yield the discrete-time equivalent of the system. You must use the CD Convert Continuous to Discrete VI to convert the continuous-time system to the discrete-time equivalent of the system.
Zeros is the array of zeros of the SISO system. The zeros can be real or complex. If they are complex, they must be in complex conjugate pairs.
Poles is the array of poles of the SISO system. The poles can be real or complex. If they are complex, they must be in complex conjugate pairs.
Gain is the scalar gain of the SISO system. The default is NaN.
error in describes error conditions that occur before this node runs. This input provides standard error in functionality.
Delay is the transport time delay that may exist in the system. The default is NaN. Refer to the LabVIEW Control Design User Manual for more information about delays.
Zero-Pole-Gain Model is the system model this VI creates. To access and modify the data in the model, use the Model Information VIs.
error out contains error information. This output provides standard error out functionality.

CD Construct Zero-Pole-Gain Model (SISO Symbolic)

Complete Complex Conjugate? specifies, when TRUE, to calculate the complex conjugate for any zero or pole that has only a real or pure complex root specified. The default is FALSE.
Sampling Time (s) defines whether the model represents a continuous-time system or a discrete-time system. If the model represents a continuous-time system, Sampling Time (s) must equal 0. If the model represents a discrete-time system, Sampling Time (s) must be greater than 0 and equal to the sampling rate, in seconds, of the discrete system. A value of -1 specifies that Sampling Time (s) is irrelevant. The default is 0.
Note  If you use the inputs to create a continuous-time system, setting the Sampling Time (s) to a value greater than 0 does not yield the discrete-time equivalent of the system. You must use the CD Convert Continuous to Discrete VI to convert the continuous-time system to the discrete-time equivalent of the system.
Symbolic Zeros is the array of zeros of the system. The zeros can be real or complex. If they are complex, they must be in complex conjugate pairs.
Symbolic Poles is the array of poles of the system. The poles can be real or complex. If they are complex, they must be in complex conjugate pairs.
Symbolic Gain is the scalar gain of the system. The default is NaN.
error in describes error conditions that occur before this node runs. This input provides standard error in functionality.
Symbolic Delay is the symbolic representation of the transport time delay that may exist in the system. Refer to the LabVIEW Control Design User Manual for more information about delays.
Variables contains the name and value of each variable.
Name is a variable name this VI uses to define the data of the system model. Variable names can be a combination of letters and numbers. A variable name that begins with a capital letter E can produce unpredictable errors if parts of the original string represent numbers like 1E–2. Avoid terms beginning with E in such cases.
Value is the numeric value this VI associates with the variable. The VI uses this value to evaluate the model.
Zero-Pole-Gain Model is the system model this VI creates. To access and modify the data in the model, use the Model Information VIs.
error out contains error information. This output provides standard error out functionality.

CD Construct Zero-Pole-Gain Model (MIMO)

Complete Complex Conjugate? specifies, when TRUE, to calculate the complex conjugate for any zero or pole that has only a real or pure complex root specified. The default is FALSE.
Sampling Time (s) defines whether the model represents a continuous-time system or a discrete-time system. If the model represents a continuous-time system, Sampling Time (s) must equal 0. If the model represents a discrete-time system, Sampling Time (s) must be greater than 0 and equal to the sampling rate, in seconds, of the discrete system. A value of -1 specifies that Sampling Time (s) is irrelevant. The default is 0.
Note  If you use the inputs to create a continuous-time system, setting the Sampling Time (s) to a value greater than 0 does not yield the discrete-time equivalent of the system. You must use the CD Convert Continuous to Discrete VI to convert the continuous-time system to the discrete-time equivalent of the system.
Zeros-Poles-Gains is an array of zero-pole-gain models that you can use to define the dynamics of a multiple-input single-output (MISO), single-input multiple-output (SIMO), or multiple-input multiple-output (MIMO) system.
Gain is the gain of the SISO system. The default is NaN.
Zeros is the array of zeros of the SISO system. The zeros can be real or complex. If they are complex, they must be in complex conjugate pairs.
Poles is the array of poles of the SISO system. The poles can be real or complex. If they are complex, they must be in complex conjugate pairs.
error in describes error conditions that occur before this node runs. This input provides standard error in functionality.
Zero-Pole-Gain Model is the system model this VI creates. To access and modify the data in the model, use the Model Information VIs.
error out contains error information. This output provides standard error out functionality.

CD Construct Zero-Pole-Gain Model (MIMO Symbolic)

Complete Complex Conjugate? specifies, when TRUE, to calculate the complex conjugate for any zero or pole that has only a real or pure complex root specified. The default is FALSE.
Sampling Time (s) defines whether the model represents a continuous-time system or a discrete-time system. If the model represents a continuous-time system, Sampling Time (s) must equal 0. If the model represents a discrete-time system, Sampling Time (s) must be greater than 0 and equal to the sampling rate, in seconds, of the discrete system. A value of -1 specifies that Sampling Time (s) is irrelevant. The default is 0.
Note  If you use the inputs to create a continuous-time system, setting the Sampling Time (s) to a value greater than 0 does not yield the discrete-time equivalent of the system. You must use the CD Convert Continuous to Discrete VI to convert the continuous-time system to the discrete-time equivalent of the system.
Symbolic Zero-Pole-Gain Model(s) is the symbolic representation of the zero-pole-gain model.
Symbolic Gain is the scalar gain of the system. The default is NaN.
Symbolic Delay is the symbolic representation of the transport time delay that may exist in the system. Refer to the LabVIEW Control Design User Manual for more information about delays.
Symbolic Zeros is the array of zeros of the system. The zeros can be real or complex. If they are complex, they must be in complex conjugate pairs.
Symbolic Poles is the array of poles of the system. The poles can be real or complex. If they are complex, they must be in complex conjugate pairs.
error in describes error conditions that occur before this node runs. This input provides standard error in functionality.
Variables contains the name and value of each variable.
Name is a variable name this VI uses to define the data of the system model. Variable names can be a combination of letters and numbers. A variable name that begins with a capital letter E can produce unpredictable errors if parts of the original string represent numbers like 1E–2. Avoid terms beginning with E in such cases.
Value is the numeric value this VI associates with the variable. The VI uses this value to evaluate the model.
Zero-Pole-Gain Model is the system model this VI creates. To access and modify the data in the model, use the Model Information VIs.
error out contains error information. This output provides standard error out functionality.

CD Construct Zero-Pole-Gain Model Details

Only the SISO and SISO Symbolic instances of this VI support delays. To represent a delay in the model, you must specify the delay in this VI. Refer to the LabVIEW Control Design User Manual for more information about delays.

Log in to get a better experience