Version:

Last Modified: December 18, 2017

Measures the performance of a control system by calculating the integral of the controller error.

Error of the controller.

This input accepts a double-precision, floating-point number or an array of double-precision, floating-point numbers.

This input changes to **error signal** when the data type is a waveform or a cluster of two arrays.

**Default: **0

Error signal of the controller.

This input accepts a waveform or a cluster of two arrays.

This input changes to **error** when the data type is a double-precision floating-point number or an array of double-precision floating-point numbers.

Criterion for calculating the integral of the controller error.

Name | Value | Description |
---|---|---|

Integral Error (IE) | 0 | Calculates the integral of error using the following equation: $\mathrm{IE}={\int}_{0}^{\infty}e\left(t\right)dt$. |

Integral Absolute Error (IAE) | 1 | Calculates the integral of absolute error using the following equation: $\mathrm{IAE}={\int}_{0}^{\infty}\left|e\left(t\right)\right|dt$. |

Integral Square Error (ISE) | 2 | Calculates the integral of square error using the following equation: $\mathrm{ISE}={\int}_{0}^{\infty}{\left[e\left(t\right)\right]}^{2}dt$. |

Integral Time Absolute Error (ITAE) | 3 | Calculates the integral of time multiplied by absolute error using the following equation: $\mathrm{ITAE}={\int}_{0}^{\infty}t\left|e\left(t\right)\right|dt$. |

Integral Time Error (ITE) | 4 | Calculates the integral of time multiplied by error using the following equation: $\mathrm{ITE}={\int}_{0}^{\infty}te\left(t\right)dt$. |

Integral Time Square Error (ITSE) | 5 | Calculates the integral of time multiplied by square error using the following equation: $\mathrm{ITSE}={\int}_{0}^{\infty}t{\left[e\left(t\right)\right]}^{2}dt$. |

Integral Square Time Error (ISTE) | 6 | Calculates the integral of square time multiplied by error using the following equation: $\mathrm{ISTE}={\int}_{0}^{\infty}{t}^{2}e\left(t\right)dt$. |

**Default: **Integral Error (IE)

Loop-cycle time, or interval in seconds, at which this node is called.

If **dt** is less than or equal to zero, this node uses an internal timer with a one millisecond resolution.

This input is available only if you wire a double-precision, floating-point number or an array of double-precision, floating-point numbers to **error**.

**Default: **-1

Calculated integral of the controller error.

**Where This Node Can Run: **

Desktop OS: Windows

FPGA: This product does not support FPGA devices

Web Server: Not supported in VIs that run in a web application