International Engineering and Natural Sciences Conference (IENSC 2019) 6-8 November 2019, Dicle University, Diyarbakır, Turkey REAL TIME PID CONTROLLED SPEED REGULATION OF A DC MOTOR USING LABVIEW Cihan Ersalı*1, Davut İzci2, Baran Hekimoğlu3 Batman University, Faculty of Engineering, [email protected] 2 Batman University, Faculty of Engineering, [email protected] 3 Batman University, Faculty of Engineering, [email protected] 1 * Corresponding author: [email protected] Abstract: Purpose: In this study, a robust real-time PID controlled mechanism was developed to regulate the speed of a DC motor in real-time using a simple setup. Previous studies indicate that real time control is done by using more complicated setups which include components that make the system complex. To overcome the complexity issue, LabVIEW software was used in this work to eliminate most of the required components and create all necessary functions to achieve a stable real-time operated system. Material and Methods: A discrete PID control scheme that operates the system in real-time was created using LabVIEW software. A data acquisition card (DAQ) and a driving unit along with an attached encoder was used to form the hardware of the system. PID parameters were obtained by creating an autotuning algorithm which basically adopts Ziegler-Nichols Method; however, those parameters were obtained by directly running the system under a stable condition without providing any transfer function regarding system. It also considers the noise level in order to acquire better gain parameters for obtaining a stable real-time operated system. Results and Conclusion: The created algorithm was synchronized to communicate a National Instruments’ DAQ card and this device was both used to obtain the actual speed in real-time from an attached encoder and to send control signals to driving unit. The system was tested for real-time dynamically alternated speed values as well as pre-defined values. A real-time controlled system presenting good response to dynamic inputs was achieved through this approach. The results showed a very good step response, almost no overshoot (0.34 %) and very decent rise time (3.5 s) and settling time (6.1 s) along with good transitional behavior from one set point to another in real-time. In conclusion, a robust real-time operated system was demonstrated by achieving aforementioned parameters and highly adaptive transitional behavior. Keywords: PID Control, LabVIEW, Data acquisition, Real-time Control.