Reaction near the grid in fluidized beds

✍ Scribed by John R. Grace; Hugo I. De Lasa

• Publisher: American Institute of Chemical Engineers
• Year: 1978
• Tongue: English
• Weight: 297 KB
• Volume: 24
• Category: Article
• ISSN: 0001-1541
• DOI: 10.1002/aic.690240232

✦ Synopsis

is tuned for set point response, the same setting gives very poor load response, and vice versa.

The response of the proposed algorithm does not deteriorate when errors are present in the process parameters. Furthermore, only one algorithm is needed to compensate for both set point and load changes. This is a distinct advantage over the previously reported minimal algorithms and discrete P.I. algorithms. Since the proposed algorithm views deviations in the output of the process from the set point value as an equivalent step disturbance in the input, the response is always stable. ACKNOWLEDGMENT tions of the drawings. The authors thank Louis Haas who assisted in the prepara-NOTATION a Gp (s) = process transfer function Luyben, W. L., "Damping Coefficient Design Charts for Sampled-Data Control of Processes with Deadtime,"