TY - JOUR TI - Influence of dual vibrations on control of percussive hand-operated power tools – experimental investigations AU - Książek, Marek A. AU - Tarnowski, Janusz TI - Influence of dual vibrations on control of percussive hand-operated power tools – experimental investigations AB - This article presents the results of pioneer experimental research into the impact of whole body vibration (WBV) and hand arm vibration (HAV) with different amplitudes and frequencies on percussive tools which are controlled by hand. In these studies the human operator is considered as the active element of the control system. The quality of control executed by the participants of the tests was assessed by the typical parameters existing in control system engineering, such as rise time, settling time, overshoot and integral square error (ISE). The tests were performed on an especially built stand. Results are presented in the form of time histories of step reference force. Forces realized by the operator were statistically analysed and graphically presented. Local (HAV) vibration of tools and accompanying dynamic forces between the handle and the vibrating tool have a big influence on control of the tool. An increase in the frequency of the tools’ vibration increases the adjustment range. The influence of platform vibrations on the adjustment range is relatively small. VL - 2017 IS - Volume 9 Year 2017 (114) PY - 2017 SN - 0011-4561 C1 - 2353-737X SP - 207 EP - 218 DO - 10.4467/2353737XCT.17.161.7173 UR - https://ejournals.eu/en/journal/czasopismo-techniczne/article/influence-of-dual-vibrations-on-control-of-percussive-hand-operated-power-tools-experimental-investigations KW - Human as manual tool control system KW - Influence of WBV and HAV on man’s control reactions