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Due to the long-time engineering practice, the existing PID controllers and their parameters contain the valuable information about the models of the industrial processes. Such information is absorbed to simplify the design and tuning process of the active disturbance rejection controller (ADRC) in this study. If one channel of the multivariable system is stabilized by PID, then ADRC can be built...
Thanks to the long-time engineering practice, the existing PID controllers and their parameters contain the valuable information about the models of the industrial processes. Such information is absorbed to simplify the design and tuning process of the active disturbance rejection controller (ADRC) in this study. If one channel of the multi-variable system is stabilized by PID, then ADRC can be built...
Different applications of the parameterization of all systems stabilized by a given controller, i.e. the dual Youla parameterization, are considered in this paper. It will be shown how the parameterization can be applied in connection with controller design, adaptive controllers, model validation and fault detection. Further, some of the limitation in connection with the parameterization are also...
In the present paper, we examine a design method of 2-degree-of-freedom repetitive control systems. The 2-degree-of-freedom control has good characteristics, such as the input-output characteristics for the reference input and feed-back control characteristics can be independently settled. 2-degree-of-freedom controllers consist of the feed-forward controller and the feed-back controller. Design methods...
Due to adding the extra degree of freedom, the fractional order PID (FO-PID) controller can achieve better control performance than the integer order PID controller. Based on the existing tuning methods, developed for particular forms of the process, in this paper the FO-PI and FO-PD controller design method is proposed for a large class of system models, including fractional order and integer models...
In this paper, we discuss how to synthesize a stabilizably robust controller for a ball and plate system (BPS). In order to reduce the fragility in its robust controller synthesis, a loop-shaping method in terms of a normalized right coprime factor (NRCF) uncertainty description for the BPS is thus employed. In effect, the design of weighting functions for the BPS loop-shaping is a decisive factor...
A new approach for the robust fixed-order H∞ controller design by convex optimization is proposed. In this paper, the robust performance condition is represented by a set of convex constraints with respect to the parameters of a linearly parameterized controller on the Nyquist diagram for prespecified frequency points. This method can directly handle frequency-domain uncertainty without any modeling...
This paper examines uncertainty in design and traditional methods of accounting for it, while developing a methodological comparison of Monte Carlo Simulation (MCS) and Epoch-Era Analysis (EEA). Particular focus is placed on the way by which MCS and EEA handle uncertainty from both endogenous sources (i.e., those arising from modeling design and performance), and from exogenous sources such as requirements...
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