A Ratemeter with Large Dynamic RangeSchofield, J. W.
doi: 10.1177/002029407400700701pmid: N/A
A ratemeter is described which uses integrated circuits and light-emitting diodes to combine the wide dynamic range of a digital counter with the readability of an analogue instrument by displaying the most significant bit from a binary counter. On average, the instrument is accurate within a factor of √2.
An Investigation into the Application of Digital Prediction Filters to Direct Digital Control SystemsRoberts, P. D.
doi: 10.1177/002029407400700705pmid: N/A
The report describes a digital simulation study of the application of discrete prediction filters, designed from Taylor series expansion or the method of least squares, to direct digital control, where the prediction filter is inserted in the feedback path. The effects on system performance to set-point changes and load disturbances are investigated. In addition, the effects of process noise and system stability are considered. It is concluded that accuracy of prediction is not the most important property which affects control performance. Best performance is obtained using a filter which has a low sensitivity to process noise and predicts as far as possible into the future while remaining within stability constraints.
Modelling and Simulation for Applied Control SystemsLuckett, P. R.; Davis, D.
doi: 10.1177/002029407400700706pmid: N/A
The convention began with an introductory talk by Prof J. H. Westcott of Imperial College, who highlighted the immense growth of emphasis towards control engineering. He described briefly a few of his own projects including a model of the national economy designed to yield a greater understanding of the major controllable variables influencing the behaviour of the system. Following this introduction, the Pro- Vice Chancellor of the University of Bath, Prof Austwick, welcomed the delegates and The Institute to the University.