A proportional integral derivative (PID) controller is the most commonly used controller in controlling industrial loops due to its simple structure, robust nature and easy implementation. Tuning a PID controller is an important task. The conventional methods for tuning a PID controller have certain limitations. These limitations can be taken care by tuning the PID controller using intelligent ...

AbstructWhile proportional integral derivative (PID) controllers are widely used in industrial applications, they exhibit poor performance when applied to systems containing unknown nonlinearities, such as deadzones, saturation, and hysteresis. In this paper, we propose a fuzzy logic-based precompensation approach for PID controllers. We demonstrate the performance of our scheme via experiments...

Inverted pendulum system is a complex, unstable and nonlinear system. In order to make it become an adaptive and robust stable system in control strategy, the mathematical model of linear l-stage inverted pendulum has been established by means of Newton mechanics. The control strategies including classic control methods and modern control methods, such as the PID control algorithm, the pole ass...

This paper presents open loop characteristics of the flexure stage based single input single output (SISO) nanopositioning device. The dynamic characteristics of the device have been analyzed. System characteristics can be improved by using different types of feedback controllers. To provide consistent, reliable and safe solution to the industrial control problems, different tuning schemes such...

This paper proposes a novel fractional order PID controller for torsional system’s backlash vibration suppression control, in which the order k of D controller can not only be integer but also be any real number. Various methods have been proposed for two-inertia system’s speed control, but the control systems designed by these methods may not be able to suppress the vibration caused by gear ba...