PID Control

I decided to set up a circuit with a peicewise linear input which is an input that is defined to have 0 volts from time t = 0 to time t = 1ms, and have for example an input of 2 volts for time t > 1ms. There is a sudden change of input voltage […]

The system that we want to control can be thought as two separate systems. Firstly, the actuators, these are the devices that are generating the forces or energy to change the system like motors or heaters. The second system is the process, it is the thing that the actuator is working against and trying to […]

An Op-Amp Differentiator is a circuit that uses a operational amplifier, a capacitor and a resistor to calculate the derivative of the input signal. Its output signal is proportional to differentiation of input signal. The circuit for it is illustrated in the following photo. If we do a transient analysis on this ciruict by equating […]

An Op-Amp Integrator is a circuit that uses a operational amplifier, a capacitor and a resistor to calculate the integral of the input signal. Its output is the cumulative effect of the input signal over time. The circuit for it is illustrated in the following photo. If we do a transient analysis of the circuit […]

The basic idea of the PID control system is to figure out how to generate the appropriate actuating signal which is the input, so that the system will produce the desired controlled variable which is the output. This control system is here to help the object to achieve the set point or the desired value. […]