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| Ziegler-Nichols-viritys× | Lineaarinen kvadraattinen säädin× | |
|---|---|---|
| Tieteenala | Säätöteoria | Säätöteoria |
| Menetelmäperhe | Machine learning | Machine learning |
| Syntyvuosi≠ | 1942 | 1960 |
| Kehittäjä≠ | John G. Ziegler | Rudolf Kalman |
| Tyyppi | algorithm | algorithm |
| Alkuperäislähde≠ | Ziegler, J. G., & Nichols, N. B. (1942). Optimum settings for automatic controllers. Transactions of the American Society of Mechanical Engineers, 64(8), 759-768. link ↗ | Kalman, R. E. (1960). Contributions to the theory of optimal control. Boletin de la Sociedad Matematica Mexicana, 5(2), 102-119. link ↗ |
| Rinnakkaisnimet | PID Tuning, Empirical Tuning Method | LQR, Linear Quadratic Optimal Control |
| Liittyvät≠ | 2 | 4 |
| Tiivistelmä≠ | Ziegler-Nichols Tuning is a practical, model-free method for tuning PID controller gains empirically. Published in 1942, this pioneering method requires only measurement of the system's step response (or closed-loop oscillations), making it applicable to any system without prior identification. Ziegler-Nichols remains widely used in industry because it is simple, fast, and often produces reasonable initial tunings. | The Linear Quadratic Regulator (LQR) is a classical optimal control algorithm that computes a linear feedback law to minimize a quadratic cost function for a linear dynamical system. Introduced by Kalman in 1960, LQR provides a provably optimal, closed-form solution for linear systems and remains fundamental in control theory, robotics, and aerospace applications because of its theoretical elegance and computational efficiency. |
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