Control of 12 powerful blowers with three heating elements each, 24 temperature sensors and they all spread heat to the same large space. In addition, there are four separate PID control loops (since there are temperature gradients in the space) and each loop affects the others. The system is stabilized within +-2 degrees for every setpoint.
Complex mathematics is used to obtain a closed and stable control system at the customer's request.
Control equipment - BECKHOFF Automation
PID (Proportional-Integral-Derivative) control is a widely used technique for controlling the temperature of heaters.
Heaters are commonly used in various industrial processes, ranging from manufacturing to food processing. The temperature of the heater needs to be controlled precisely to ensure that the process is carried out efficiently and effectively. PID control is an effective method for achieving this level of temperature control.
PID control involves three basic components: proportional control, integral control, and derivative control. Each of these components works together to maintain the desired temperature of the heater.
Proportional control involves adjusting the output of the heater in proportion to the difference between the desired temperature and the actual temperature. For example, if the desired temperature is 100 degrees Celsius and the actual temperature is 90 degrees Celsius, the heater output will be increased until the temperature reaches 100 degrees Celsius.
Integral control involves adjusting the output of the heater based on the accumulated error over time. This means that if the temperature has been below the desired temperature for a long time, the heater output will be increased to compensate for this.
Derivative control involves adjusting the output of the heater based on the rate of change of the temperature. This means that if the temperature is changing rapidly, the heater output will be adjusted accordingly to prevent overshooting of the desired temperature.
The PID controller uses a feedback loop to continuously monitor the temperature of the heater and adjust the output accordingly. The controller calculates the error between the desired temperature and the actual temperature and uses this error to adjust the output of the heater.
PID control is a very effective method for maintaining the temperature of heaters because it can adapt to changes in the system and maintain a stable temperature. However, it is important to tune the PID controller correctly to ensure that it is working optimally. This involves adjusting the proportional, integral, and derivative gains to achieve the desired performance.
Proper tuning of the PID controller is essential for achieving optimal performance.
Single PID controller:
Multiple PID architecture employed in the project:
Control Cabinet:
the heaters installed in the project:
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