Analysis of dynamic quantizer in 2-DOF Internal Model Control system with dead-time

It is well known that plants with dead-time are difficult to be controlled by using traditional control method. For this, controller with dead-time have been proposed for the systems with dead-time, e.g. internal model control (IMC), Smith-method. However, it would be difficult to realize the dead-time component of controller because of memory limit of micro control unit (MCU). The sampling time might be large in case of the application to the plant with large time delay. Hence, the trade-off between sampling time and maximum quantizing error exists. In this paper, the design method of dynamic quantizers are proposed for achieving small quantizing error for control systems in MCU. The effectiveness of the proposed method is shown by numerical example.