Control algorithm for optimising deep vibratory compaction

As part of the research project "Optimisation of vibro-compaction", vibratory compaction was further developed. The aim of the project was, in a first step, to better understand the process in general. For example, the effects of changes in the compaction method and the effect of a change in frequency on the movement behaviour and compaction were evaluated as part of the investigations. In the course of the research work, the current control variable, the motor power consumption, was expanded to include additional variables. To achieve the above-mentioned objectives, a model test stand was built on the appropriate scale. After the tests had been evaluated, reproducible behaviours were identified and summarised in a control algorithm. The vibration amplitude, the newly introduced sensor phase angle and the phase angle were identified as potential control parameters during the tests. These parameters reflect the behaviour of the surrounding soil and are used to automatically adjust the compaction frequency and time. The suitability of this control system and the findings obtained were verified in field tests, and recommendations for implementation were derived from these tests in order to achieve the goal of optimising vibratory compaction on construction sites in the near future.