Release of Open-Source Signal Generator (SIGULS)

We are thrilled to announce the release of SIGULS (signal generator for user-specified laboratory signals), an open-source excitation signal generator for structural dynamics testing. Built around an ESP32-S3 microcontroller and the AD5781 Digital-to-Analog Converter, it offers the user complete control over the excitation signal type, is comparatively affordable, and can be operated independently of any data acquisition system. The device is primarily motivated by the need for excitation signals purpose-built for structural dynamics, such as a band-limited pseudo-random excitation or a sine sweep. Using the included Python software, signals can be designed and uploaded to the device. Alternatively, entirely custom signals can also be uploaded and output by the device.

The corresponding paper documents the hardware and software of SIGULS and provides all materials required to reproduce the open signal generator. A structural dynamics experiment was conducted to evaluate the device's performance and utility relative to commercial alternatives. While SIGULS does not reach the full performance of commercial products, the achieved results are promising and motivate further development.

Read the published article here: www.researchgate.net/publication/400890736_SIGULS_Signal_generator_for_user-specified_laboratory_signals