designing of a pid controller is a very common method for industrial process control and due to its very simple and efficient function; it is used in a wide variety of industrial applications. pid controller to reduce the steady state error and dynamic response of the system is used. pid controller design is an inevitable problem in setting the coefficients need to try a lot of trial and error,...

In this paper, genetic algorithms are used to robustify digital multivariable PID controllers for robotic manipulators. This process of robustification is effected by using genetic algorithms to determine the optimal set of controller tuning parameters for typical trajectorytracking tasks. This use of genetic algorithms is illustrated by the design of a digital trajectory-tracking controller fo...

In this paper, the immune controller, is used to control the paralleled DC-DC converters. A PID controller is first applied and its coefficient is optimized using an intelligent (PSO) algorithm. Immune controller is then added to PID controller and an immune PID controller is formed. Two methods have been suggested to determine non-linear behavior of immune controller. In the first method, an e...

ABSTRACT This application report discusses a UCD91xx-based digital controller design for a high-frequency dc-dc switching power supply. Starting with a dc-dc buck converter power stage and a given set of performance specifications, different control blocks and parameters, used as in the analog control design approach, are reviewed prior to the digital controller design. The control loop is then...

This paper investigates a recently derived lower bound stability measure for sampled-data controller structures subject to finitewordlength (FWL) constraints. The optimal realization of the digital PID controller with FWL considerations is formulated as a nonlinear optimization problem, and an efficient strategy based on adaptive simulated annealing (ASA) is adopted to solve this complex optimi...

In this paper, the robot with three wheels is implement and its motion is controlled . two of robot’s wheels are activated by DC motors. The main PID controllers are implemented with a Field Programmable Gate Array(FPGA) for independent robot movement . a FPGA controller communicate with a PC with PCI card(PLX9052) so that the movement of wheels can be displayed on the monitor through PCI card ...

Nearly all modern process actuators (valves, agitators, heaters, motors, etc.) and process meters are electronic, which makes them easily integrated into Proportional-Integral-Derivative (PID) based control systems. PID control is at the heart of many processes, and it’s important to get it right. When designing a process system, it can be helpful to test and refine PID algorithms before the eq...

many real time processes have complex, uncertain and nonlinear dynamics. boilers are nonlinear, time varying, multi-input multi-output (mimo) systems, whose states generally vary with operating conditions. the major problem in controlling that system is that its drum water pressure and steam flow dynamics include an integrator that results a critically stable behavior. conventional controller p...

FPGA stands for Field Programmable Gate Array. It is an integrated circuit that can be configured by the user in order to implement digital logic functions of varying complexities. FPGA can be very effectively used for control purposes in processes demanding very high loop cycle time. The implementation of a digital controller in a FPGA can be parallel,resulting in very high speeds of operation...