Method for Measuring a Surface Profile Using a Mechatronic Profiler with Parallel Control of Sensor Drives

Issues associated with improving the maneuverability and operating speed of a mechatronic profiler, as well as extending the profile measurement range for various surfaces, are considered. In order to solve these problems, a method was proposed for measuring a surface profile along a given trajectory using a mechatronic profiler that provides parallel control of sensor drives. A system for controlling a mechatronic profiler characterized by distributed control of drives is described, effectively implementing the programmed movements of the profiler’s laser sensor. The described control system improves the accuracy, sensitivity, speed, and reliability of the mechatronic profiler during operation, as well as reducing measurement and calibration time while significantly increasing the accuracy of measurement results. In addition, a developed information and measurement system of the mechatronic profiler is presented, along with a specification of software for controlling the electric drives of a mechatronic profiler. The following metrological characteristics of the mechatronic profiler were established and confirmed during verification: range of measuring the sensor-to-surface distance – 100–500 mm; maximum permissible absolute measurement error – ±0.05% of the range; circumferential measurement range – 0–360°; maximum permissible error of the rotary encoder ±30″. The results of surface profile measurements performed in polar coordinates for a corrugated sheet having a downward deflection amounting to 13.8 ± 0.05 mm in the cross-section are presented in graphic form. The study results can be used in various economic sectors: mechanical engineering, agriculture, construction, etc.