Amplitude–Frequency Method of Control of a Mobile Drilling Machine with Hydraulic Drive with Dependent Tool Advance

Abstract

The paper explores an innovative method of control of a mobile drilling machine hydromechanical system of the working motions. This method is used to create the dependent hydraulic drive tool advance on load from the main motion. The method is based on the principle of conversion of an amplitude–frequency signal by pressure generated by a hydromechanical multiparameter sensor and its transformation by the hydraulic control circuit into displacement of the control cylinder of the feed drive hydraulic motor. The results of the computational experiment confirm the effectiveness of the proposed method of volumetric control in comparison with the previously used throttle control for dynamic and energy characteristics by 23–40% for the considered mobile drilling machine.