A practical standard transistorized optimum response controller

The principle of nonlinear optimum response control has found a new and unique application in the development of a standard controller. The transistorized controller can work in a great variety of feedback systems because it has negligible time delay. Optimum response to a specified step input can be obtained very easily by experiment because linear switching is used. The response is still nearly optimum when the input is not of the specified form and magnitude, or when the system parameters change with environmental variations. Solution of practical problems in the development are discussed in the paper. A mathematical proof is given to show that optimum response to a specified step input, for the systems under consideration, can always be obtained with linear switching.