- Help Center
- Automation/Electrical
- Emergency Stop Switches
-
Pneumatics
- Air Cylinders
- Air Dryers
- Auto Switches
- Boosters
- Electric Actuators
- Fieldbus System/Serial Transmission System
- Fittings
- Modular F.R.L.
- Pressure Switches
- Regulators
- Rotary Actuators
- Solenoid Valve
- Temperature Control Equipment
- Vacuum Equipment
- Photoelectric Sensors
- Process Valves
- Valve Clamps and Accessories
- Pumps
- Additional Articles in Pneumatics
- Safety Valves
- Tubing
-
Hydraulics
-
Automation/Electrical
- Contact Sensors / Liquid Leakage Sensors
- Level Switches
- Basic Switches
- Limit Switches
- Push Buttons / Indicator Lamps
- Thumbwheel Switches
- Safety Limit Switches
- Temperature Controllers
- Counters
- Programmable Relays
- Programmable Controllers
- Safety Sensors
- Safety Door Switches
- Solid-state Relays
- Timers
- Inverters
- Power Supplies
- Axial Fans
- Wiring Systems
- Rotary Encoders
- Pressure Sensors
- Displacement Sensors/Measurement Sensors
- Ultrasonic Sensors
- Emergency Stop Switches
- Power Controllers
- Signal Converters
- Machine Automation Controllers
- RFID Systems
- Measuring / Motor Protective Relays
- Vision Sensors / Machine Vision Systems
- Photomicro Sensors
- Digital Panel Indicators
- Programmable Terminals
- Servomotors / Servo Drivers
- Proximity Sensors
- General Purpose Relays
- Fieldbus Communications
-
Safety
-
Website Help Center
What is "Auto-tuning"?
The PID constant values and combinations that are used for temperature control depend on the characteristics of the controlled object. A variety of conventional methods that are used to obtain these PID constants have been suggested and implemented based on actual control temperature waveforms. Auto-tuning methods make it possible to obtain PID constants suitable to a variety of controlling objects. One typical method is the limit cycle method.
ON/OFF control begins from start point A in this method. Then obtain the PID constants from the hunting cycle T and oscillation D.
Readjusting PID Constants
PID constants calculated in auto-tuning operation normally do not cause problems except for some particular applications. In those cases, refer to the following diagrams to readjust the constants.
(1) Response to Change in the Proportional Band
(2) Response to Change in Integral Time
(3) Response to Change in Derivative Time