Application of Discrete Time Quantized Data Controllers to Nonlinear Systems

A new method for the digital control of a nonlinear, continuous time system is presented. The digital controller is called a discrete time quantized data (DTQD) controller. The DTQD controller uses a table look-up algorithm to determine the desired control effort. In order to minimize the number of table entries, a hystersis scaling process is proposed. This scaling process also reduces the possibility of limit cycle phenomena in the system response. The result is a reliable and low cost controller.