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Wpływ aktywnej wibroizolacji rękojeści na ergonomiczny komfort operowania ręcznym narzedziem udarowym

Basista Z.

Zeszyty Naukowe Politechniki Rzeszowskiej. Mechanika

2002

z. 60 [197]

19-26

In the paper the system man-tool-object built in the form of network of closed-loop blocks with feedback between tool and operator was presented. The human-operator was considered as composition of mechanical and control models. The transient response of the system operator-vibroisolation system between handle and tool's body, on the sudden changes of the pressure force applied to the handle was simulated and analyzed in the "Matlab-Simulink" environment.

Internal dynamics of a dead-beat pneumatic hammer

Woelke S.

Zeszyty Naukowe Politechniki Poznańskiej. Mechanika

1999

Nr 46

125-135

The paper presents a model description of ram internal dynamics in a dead-beat pneumatic tool. Mutual feed back of ram movement with air inflows and outflows as well as evolution of air state parameters were taken into consideration. Conclusions considering isothermal and isotropic processes coming out from models constructed to solve this problem were also taken into account. The model description was rearranged to a set of 6 ordinary differential equations of the first order. When comparing achieved results with those obtained for a real object, one can evaluate them as satisfactory, what allows to use this model in a synthesis of a new dead beat pneumatic tool.