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In this paper, the design of a low cost two-axis solar tracker is introduced. The aim is to obtain a high precision positioning of the cell. The control-board is able to support different control strategy such as classical techniques as PID algorithm or more advanced strategy such as fuzzy logic control (FLC). Using the error signal, the tracking capacities of the proposed approaches can be tested...
This paper investigates the design of a fuzzy PID controller for a positional control system with completely uncertainty variation parameters. The controller adopted linear structures as a conventional one, but is enhanced with better performance and extends the capability in dealing with nonlinearity and uncertainty of the system. Two types of fuzzy PD and fuzzy PI controllers, with two inputs, are...
Automatic control of a mobile robot with nonholonomic constraints normally depends on complex signal processing mechanisms, e.g. predictive control. This paper presents a new trajectory tracking method for a mobile robot by combining predictive control and fuzzy control. To overcome the time delay caused by the slow response of the sensor, the algorithm employs predictive control to predict the position...
A simple but effective way to control the 3-D overhead crane is proposed in this paper. Instead of the complex designing procedures, the basic PID control is utilized to drive the trolley in the fore part of the transportation; and the projection of swinging angle and the vector to the goal are applied to derive the proper fuzzy control of crane when the trolley is near the goal. A compensating algorithm...
The position control of a pneumatic levitation system is described in this paper. The control system uses visual feedback to compute the object position, which can be modified by means of an air blower acted by a variable-speed drive. The system is employed as a test bed of control strategies. A performance comparison attained by a classical PID, a robust Hinfin control law and a fuzzy controller...
In recent years, the concept of modular and reconfigurable robotics emerged as a means for flexible and versatile automation. This concept allows for the execution of many complex tasks that cannot be performed by fixed-configuration manipulators. Nevertheless, reconfigurable robots introduce a challenging level of complexity to the problem of design of controllers that can handle a wide range of...
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