Abstract

The hydraulic oar load unit for rowing simulator has been designed that simulates oar. The device is developed on the base of experimental investigations and computer modeling and ensures the load on the oar similar to the acting during on-water rowing. The load control is organized by the control system consisting of proportional flow control valve and programmable logic controller, changing the working liquid flow through the valve. Three encoders, supported by controller with PC-based supervisory control and data acquisition system are used for positioning of the oar. Suggested system allows significantly expand simulator using possibilities to master new training methods and to identify training potentiality of athletes. Ill. 6, bibl. 6, tabl. 1 (in English; abstracts in English and Lithuanian). http://dx.doi.org/10.5755/j01.eee.116.10.881

Highlights

  • The controllable hydraulic loading unit for academic rowing simulator has been proposed by authors which is able to generate the chosen pattern of the rowing force, dependent on various parameters, including rower strength, intensity of rowing, velocity of the boat etc. [1,2,3]

  • The control of the force on the oar handle is ensured by the computerized system equipped with the oar position and velocity sensors and proportional flow control valve FCV, regulating the cross-section area of the channel in diaphragm depending on the position and the velocity of the oar [4, 6]

  • To develop the hydraulic loading unit, able to ensure loading on the oar during the rowing stroke most adequate to the one acting as on-water rowing, some preparatory activities have been carried out based on the information collected during experimental measurements of rowing force and kinematics [4, 5] and computational hydrodynamic analysis of a hydraulic loading unit [5, 6]

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Summary

Introduction

The controllable hydraulic loading unit for academic rowing simulator has been proposed by authors which is able to generate the chosen (programmed) pattern of the rowing force, dependent on various parameters, including rower strength, intensity of rowing, velocity of the boat etc. [1,2,3]. Its control is realized by changing cross-section area of the channel in the diaphragm of hydraulic cylinder Development of such rowing machine requires to define the law of change of the mentioned parameter, based on the known law of oar loading during the rowing. To develop the hydraulic loading unit, able to ensure loading on the oar during the rowing stroke most adequate to the one acting as on-water rowing, some preparatory activities have been carried out based on the information collected during experimental measurements of rowing force and kinematics [4, 5] and computational hydrodynamic analysis of a hydraulic loading unit [5, 6]. The computational fluid dynamic analysis by means of corresponding software (Cosmos Floworks) was employed for this purpose

Loading control by computerized hydraulic system
Conclusions

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