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What is a PID controller?
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.
total search58 articles
2005-06-16 Software PID control of an inverted pendulum using the PIC16F684
This app note describes how a PIC16F684 can be used to implement a positional proportional-integral-derivative (PID) feedback control in an inherently unstable system.
2001-04-15 PID control without a PhD
PID (proportional, integral, derivative) control is not as complicated as it sounds. Engineers can implement simple step solutions to achieve a fully functional control unit.
2003-06-06 Anadigm tool enhances PID controller development
The AnadigmPID tool from Anadigm allows users to build an analog PID control loop on an integrated silicon platform.
2015-01-08 Tearing down the simple and effective Mr. Coffee
The ubiquitous coffee machine satisfies many conflicting design demands, but it also serves as a source of parts and even a temperature controller.
2003-05-26 LM628 Programming Guide
This application note provides a concrete starting point for programmers of the LM628, as well as the development of short programs that test overall system functionality and lay the groundwork for more complex programs.
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.
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.
2014-11-03 Chromalox intros 1/16 DIN temperature, process controller
The 6060 controller features two PID sets, multiple inputs and outputs, heat/cool operation, soft start function, self-tuning startup and optional Modbus/RTU RS485 communications.
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.
2009-10-30 Servo controller delivers flexible motion functions
Adlink's DSP-based servo motion controllers offers 10V analog motion controller with full closed-loop control, PID plus feed-forward algorithm and 20MHz encoder input frequency.
2000-06-05 Digital Signal Processing with the PIC16C74
This application note describes the basic issues that need to be addressed in order to implement DSP systems using the PIC16C74 and provides application code modules and examples for DTMF tone generation, a 60Hz notch filter and a simple PID compensator for control systems.
2007-04-24 WiMAX transceiver minimizes component count
All of Atmel's MAX-Link WiMAX transceivers promise excellent RF performance with low current consumption, low cost and only a minimum of external components for the RF design.
2007-10-01 WiMAX transceiver first to roll with internal calibration
Atmel has unveiled the third of its MAX-Link series of transceivers designed for WiMAX applications, which feature proprietary internal calibration algorithm.
2015-10-16 Use MCU to keep wood gear clocks precise
Wood clocks have tendencies to be inaccurate because the wood expands and contracts with changes in temperature and humidity. Learn how this can be addressed using a microcontroller.
2014-01-09 Three easy steps to add USB to your design
Know how to use the CP2130 USB-to-SPI bridge controller to simplify and speed up implementation of a USB bus.
2014-03-27 The move to 100A at POL and beyond
While current demand is beginning to exceed the 100A level at the point of load, adopting a SEPIC-fed buck topology could prove useful in improving power conversion efficiency and transient response.
2013-04-11 Temperature controller boasts 16 sensor input channels
MKS Instruments' MultiTherm 1000 temperature controller features 16 precision sensor input channels accepting RTDs and thermocouples, and provides 16 PWM output channels with built-in SSRs.
2013-01-22 Solar module boasts 16.9% efficiency
The Silvantis M330 from MEMC Electronic Materials promises to deliver more than five per cent savings per watt BOS improvement over multi-crystalline and boasts 5400Pa load capacity.
2015-01-21 Smart rotary encoders integrate MCU, custom ASIC
CUI unveiled a line of intelligent rotary encoders flaunting a significant degree of versatility and providing developers with the ability to quickly configure the encoder's resolution and zero position.
2003-10-28 SiS unveils low-power Flash controller
Under the dual channel mode, the SiS150 USB 2.0 Flash disk controller from Silicon Integrated Systems can achieve read speed of up to 18MBps.
2007-11-16 Simplified FPGA use, thanks to new IP
NI has come up with a new suite of software and hardware IP to ease the task of using FPGAs in measurement, control, and signal processing.
2009-05-13 Signal processing with ST10-DSP
The goal of this application note is to precise ST10-DSP features and tools. It describes how to use and program the ST10-DSP co-processor for common signal processing algorithms with a set of dedicated examples.
2004-08-13 Servenger platform eases design with Anadigm FPAAs
Servenger unveiled a hardware development platform that gives designers a running start working with field programmable analog arrays from Anadigm.
2008-02-14 Sensorless motor-control kit rolls for ARM Cortex devices
STMicroelectronics has announced a complete three-phase motor-control development kit based on the STM32 flash MCU, which provides the necessary hardware and firmware to enable users to evaluate the 32bit solution.
2007-10-11 Power supply controller enables energy-efficient designs
Cambridge Semiconductor has unveiled a mixed-signal controller IC for switched-mode power supplies that it expects will help companies produce much more energy-efficient equipment.
2005-04-05 PMD board eventually targets PC/104
This filter-heavy motion-control card carries some impressive specs, but not mentioned in Performance Motion Devices' (PMD's) press statement is that its new Magellan Motion Controller PCI bus card can be readily programmed not only with C or C++, but also through some nifty motion control development tools the company supplies. And, you will soon be able to get the card in a PC/104 form-factor as well as this PCI plug-in.
2003-10-14 PCI laser diode module emits 20mW power
Power Technology Inc. has introduced a high power violet quality laser diode module that is suitable for high-end OEM instrumentation apps.
2005-04-19 Omron announces feature-packed temperature controllers
Omron disclosed that its E5_N series of digital temperature controllers now offer better performance and superior functionality.
2014-01-22 NXP releases LPC11U6x USB microcontrollers
The LPC11U6x USB microcontrollers from NXP Semiconductors builds on the company's LPC11Uxx portfolio with a range of enhanced features, including a more energy-efficient ARM Cortex-M0+ processor, more flash and SRAM, more serial communications, a new 2-Msps ADC, and more versatile timers.
2015-06-09 Nothing left to be invented in embedded control (Part 3)
In Part 3, we explore a few more examples of core independent peripherals; combining their functionality with analogue peripherals to create new intelligent analogue solutions.
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