1987-09-01

A Multi-Sensing Device for Hydraulic Control Systems 871603

A multi-sensing device with a piezoresistive pressure sensor for hydraulic system control was developed, applied to a hydraulic belt conveyor and tested. One single pressure sensor was installed inside a hydraulic motor. By analyzing the output signals, the following engineering variables were measured and could be analyzed: running speed, torque, absolute displacement, horsepower, pressure, mass flow rate of conveyed materials and even malfunction diagnosis. High speed resolution, torque and mass flow rate measurements are focused on in this paper. Based on data sampling rates and windows, high resolution speed data from a hydraulic motor sensor was measured. Relationships between mass flow rates on the conveyor belt and torques due to loading under various situations are presented.

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