What is a PID controller?
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A proportional-integral-derivative controller is a generic control loop feedback mechanism (controller). A PID controller attempts to correct the error between a measured process variable and a desired setpoint by calculating and then outputting a corrective action that can adjust the process accordingly and rapidly, to keep the error minimal. The PID controller calculation or algorithm involves three separate parameters: the proportional, the integral and derivative values. The proportional value determines the reaction to the current error, the integral value determines the reaction based on the sum of recent errors, and the derivative value determines the reaction based on the rate at which the error has been changing. The weighted sum of these three is used to adjust the process. |
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| 2010-06-08 | EZ Loader custom USB firmware loader driver This VID/PID combination can be bound to a specific device driver on the host system. This VID/PID combination can also be bound to a driver whose only function is to download firmware to the device. This application note describes such a driver. |
| 2009-12-08 | CompZL user's guide This application note discusses the methodology for obtaining the required PID settings using automatic optimisation mode and manual mode, and offers an example scenario for comparison. |
| 2008-09-25 | An explanation of PID control An explanation of PID control |
| 2008-08-22 | CP210X device customisation guide This document provides information about obtaining a VID and PID for a CP210x product. |
| 2008-04-27 | The basics of control system design: Moving beyond PID (1 The basics of control system design: Moving beyond PID (1 |
| 2008-06-25 | Tune PID+ and PD controllers Tune PID+ and PD controllers |
| 2008-02-26 | LabVIEW 8.5 introduces new design features NI has extended its LabVIEW graphical system design platform with new design features such as analytical PID for improving system closed-loop stability and model predictive control to multi-variable systems. |
| 2000-10-03 | PID without a PhD PID without a PhD |
| 2001-04-15 | PID control without a PhD PID control without a PhD |
| 2002-05-09 | Basler electric's digital excitation control system offers improved voltage recovery time over existing analog solid state systems This application note describes the improved voltage recovery time provided by Digital Excitation Control System over existing analog solid state systems. |
| 2002-12-17 | Closed-Loop Control This technical article details how a derivative and/or integral system is added to proportional controllers to improve the qualitative properties of a particular plant's response. |
| 2003-10-27 | CP2101 customization guide This application note provides information about obtaining a Vendor ID (VID) and Product ID (PID) for a CP2101 USB-to-UART bridge chip and describes the steps necessary for customizing the device driver installation and for customizing the device descriptors contained in the CP2101 EEPROM. |
| 2005-06-16 | Software PID control of an inverted pendulum using the PIC16F684 Software PID control of an inverted pendulum using the PIC16F684 |
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