![]() In the most general case, when and is not too large, one gets PID control of the tank height. No offset is observed and the final steady-state tank height is exactly equal to the setpoint value. PI control can show an overshoot and dumped oscillations around the setpoint. PI control is achieved when is taken to be zero. The inlet flow rate is varied in order to achieve the desired setpoint value using a P, PI, or PID (proportional–integral–derivative) control:, where is the error, is the proportional gain, and and are the integral and differential time constants, respectively.įor large and, the control simplifies to the usual proportional control, which is usually characterized by a small offset value (i.e., the final steady-state height is not exactly equal to the setpoint value). The setpoint for the tank height is chosen to equal 2 meters. The flow equation is given by: where is the valve constant expressed in ). PI CONTROLLER DESIGN FOR TANK LEVEL MONITORING AND CONTROLLING sysrEM USING LabvIEw AND myRro MODULE A thesis submitted inpmtialfulfitlment of the requirementsfor the 8th semester of Bachelor ofTechnology in Instru mentation Engineeri ng by Himangshu Ranjan Bhattarai (Gau -c-lz/53) Rahul Boro (Gau-c- lZn-Z0S) Under the supervision of Mr. ![]() ![]() Initially the tank height is equal to 0.1 meter. = where is the tank area in, and are the inlet and outlet flow rates (expressed in ), respectively. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |