tailieunhanh - Analysis and Control of Linear Systems - Chapter 12

Chapter 12 Predictive Control Sự phát triển được trình bày trong chương này nhằm mục đích để trang trải các ý tưởng chính của dự báo kiểm soát và sau đó để chỉ ra các chi tiết về giảm thiểu phân tích tiêu chuẩn cho hai cấu trúc cá nhân cho phép xây dựng điều chỉnh đa thức tương đương. Việc lựa chọn các thông số điều chỉnh cũng sẽ được phân tích, cung cấp một số quy tắc đơn giản mà đảm bảo hệ thống điều chỉnh ổn định và mạnh mẽ. . Nguyên tắc chung điều khiển tiên đoán đoán. | Chapter 12 Predictive Control The developments presented in this chapter aim to cover the main ideas of predictive control and then to indicate the details of the analytical minimization of the criterion for two individual structures enabling the elaboration of the equivalent polynomial regulator. The choice of adjustment parameters will also be analyzed providing some simple rules that guarantee the corrected system good stability and robustness. . General principles of predictive control Predictive control is based on some relatively old and intuitive ideas RIC 78 but it has been developed as an advanced control technique mainly since the 1980s. This development was done mainly according to two privileged main lines - generalized predictive control GPC by Clarke 1985 - functional predictive control FPC by Richalet 1987 . The philosophy of predictive control lies on the definition of five great ideas common to all the methods. . Anticipative aspect This anticipative effect is obtained by using explicit knowledge on the evolution of the trajectory to be followed in the future necessary knowledge required at least Chapter written by Patrick BOUCHER and Didier DUMUR. 374 Analysis and Control of Linear Systems on the horizon of some points beyond the present moment . This constraint which makes it possible to make good use of all the resources of the method necessarily restricts the application field to the control of the systems for which the trajectory to follow is perfectly known and stored pixel by pixel in the computer. It is the case of the numerical control of machine-tools cutting the pieces of the control of robots arms of monitoring the temperature profile of the applications in home automation etc. . Explicit prediction offuture behavior The method requires the definition of a numerical model of the system which makes it possible to predict the future behavior of the system. This discrete model results mainly from a preliminary offline .