I applied a voltage to the motor and recorded the resulting motion. It is very simple it is a small DC motor connected to an Arduino board. I have been working with the setup shown in the image below. If the system you are trying to model has a delay, the toolbox can automatically determine its value. You can specify how many poles and zeros you want your transfer function to have, and the toolbox determines locations of poles and zeros automatically. In R2012a, the System Identification Toolbox added support for estimating parameters of a model type that is most intuitive and easiest to work with for controls engineers – continuous-time transfer functions. System identification can help in that case. But what do you do if you don’t have the underlying equations? Today guest blogger Pravallika describes how she used new features of the System Identification Toolbox to design a controller for a DC motorĪny controls engineer knows that the key to designing a good controller is having a good plant model.
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