CD Construct Zero-Pole-Gain Model VI

Control Design VI and Function

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CD Construct Zero-Pole-Gain Model VI

Owning Palette: Model Construction VIs

Installed With: 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  

Use the pull-down menu to select an instance of this VI.

 Place on the block diagram  Find on the Functions palette

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 zero. If the model represents a discrete-time system, Sampling Time (s) must be greater than zero and equal to the sampling rate, in seconds, of the discrete system. 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 zero 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 VI or function runs. The default is no error. If an error occurred before this VI or function runs, the VI or function passes the error in value to error out. This VI or function runs normally only if no error occurred before this VI or function runs. If an error occurs while this VI or function runs, it runs normally and sets its own error status in error out. Use the Simple Error Handler or General Error Handler VIs to display the description of the error code. Use exception control to treat what is normally an error as no error or to treat a warning as an error. Use error in and error out to check errors and to specify execution order by wiring error out from one node to error in of the next node.
status is TRUE (X) if an error occurred before this VI or function ran or FALSE (checkmark) to indicate a warning or that no error occurred before this VI or function ran. The default is FALSE.
code is the error or warning code. The default is 0. If status is TRUE, code is a nonzero error code. If status is FALSE, code is 0 or a warning code.
source specifies the origin of the error or warning and is, in most cases, the name of the VI or function that produced the error or warning. The default is an empty string.
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. If error in indicates that an error occurred before this VI or function ran, error out contains the same error information. Otherwise, it describes the error status that this VI or function produces. Right-click the error out front panel indicator and select Explain Error from the shortcut menu for more information about the error.
status is TRUE (X) if an error occurred or FALSE (checkmark) to indicate a warning or that no error occurred.
code is the error or warning code. If status is TRUE, code is a nonzero error code. If status is FALSE, code is 0 or a warning code.
source describes the origin of the error or warning and is, in most cases, the name of the VI or function that produced the error or warning.

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 zero. If the model represents a discrete-time system, Sampling Time (s) must be greater than zero and equal to the sampling rate, in seconds, of the discrete system. 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 zero 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 VI or function runs. The default is no error. If an error occurred before this VI or function runs, the VI or function passes the error in value to error out. This VI or function runs normally only if no error occurred before this VI or function runs. If an error occurs while this VI or function runs, it runs normally and sets its own error status in error out. Use the Simple Error Handler or General Error Handler VIs to display the description of the error code. Use exception control to treat what is normally an error as no error or to treat a warning as an error. Use error in and error out to check errors and to specify execution order by wiring error out from one node to error in of the next node.
status is TRUE (X) if an error occurred before this VI or function ran or FALSE (checkmark) to indicate a warning or that no error occurred before this VI or function ran. The default is FALSE.
code is the error or warning code. The default is 0. If status is TRUE, code is a nonzero error code. If status is FALSE, code is 0 or a warning code.
source specifies the origin of the error or warning and is, in most cases, the name of the VI or function that produced the error or warning. The default is an empty string.
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. If error in indicates that an error occurred before this VI or function ran, error out contains the same error information. Otherwise, it describes the error status that this VI or function produces. Right-click the error out front panel indicator and select Explain Error from the shortcut menu for more information about the error.
status is TRUE (X) if an error occurred or FALSE (checkmark) to indicate a warning or that no error occurred.
code is the error or warning code. If status is TRUE, code is a nonzero error code. If status is FALSE, code is 0 or a warning code.
source describes the origin of the error or warning and is, in most cases, the name of the VI or function that produced the error or warning.

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 zero. If the model represents a discrete-time system, Sampling Time (s) must be greater than zero and equal to the sampling rate, in seconds, of the discrete system. 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 zero 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 VI or function runs. The default is no error. If an error occurred before this VI or function runs, the VI or function passes the error in value to error out. This VI or function runs normally only if no error occurred before this VI or function runs. If an error occurs while this VI or function runs, it runs normally and sets its own error status in error out. Use the Simple Error Handler or General Error Handler VIs to display the description of the error code. Use exception control to treat what is normally an error as no error or to treat a warning as an error. Use error in and error out to check errors and to specify execution order by wiring error out from one node to error in of the next node.
status is TRUE (X) if an error occurred before this VI or function ran or FALSE (checkmark) to indicate a warning or that no error occurred before this VI or function ran. The default is FALSE.
code is the error or warning code. The default is 0. If status is TRUE, code is a nonzero error code. If status is FALSE, code is 0 or a warning code.
source specifies the origin of the error or warning and is, in most cases, the name of the VI or function that produced the error or warning. The default is an empty string.
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. If error in indicates that an error occurred before this VI or function ran, error out contains the same error information. Otherwise, it describes the error status that this VI or function produces. Right-click the error out front panel indicator and select Explain Error from the shortcut menu for more information about the error.
status is TRUE (X) if an error occurred or FALSE (checkmark) to indicate a warning or that no error occurred.
code is the error or warning code. If status is TRUE, code is a nonzero error code. If status is FALSE, code is 0 or a warning code.
source describes the origin of the error or warning and is, in most cases, the name of the VI or function that produced the error or warning.

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 zero. If the model represents a discrete-time system, Sampling Time (s) must be greater than zero and equal to the sampling rate, in seconds, of the discrete system. 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 zero 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 VI or function runs. The default is no error. If an error occurred before this VI or function runs, the VI or function passes the error in value to error out. This VI or function runs normally only if no error occurred before this VI or function runs. If an error occurs while this VI or function runs, it runs normally and sets its own error status in error out. Use the Simple Error Handler or General Error Handler VIs to display the description of the error code. Use exception control to treat what is normally an error as no error or to treat a warning as an error. Use error in and error out to check errors and to specify execution order by wiring error out from one node to error in of the next node.
status is TRUE (X) if an error occurred before this VI or function ran or FALSE (checkmark) to indicate a warning or that no error occurred before this VI or function ran. The default is FALSE.
code is the error or warning code. The default is 0. If status is TRUE, code is a nonzero error code. If status is FALSE, code is 0 or a warning code.
source specifies the origin of the error or warning and is, in most cases, the name of the VI or function that produced the error or warning. The default is an empty string.
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. If error in indicates that an error occurred before this VI or function ran, error out contains the same error information. Otherwise, it describes the error status that this VI or function produces. Right-click the error out front panel indicator and select Explain Error from the shortcut menu for more information about the error.
status is TRUE (X) if an error occurred or FALSE (checkmark) to indicate a warning or that no error occurred.
code is the error or warning code. If status is TRUE, code is a nonzero error code. If status is FALSE, code is 0 or a warning code.
source describes the origin of the error or warning and is, in most cases, the name of the VI or function that produced the error or warning.

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.

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