Investigations of electronic controller for electrohydraulic valve with DC and stepper motor

Abstract

The publication described initial research of a new type of electrohydraulic valve equipped with the a DC motor and a stepper motor. The novelty of presented here devices is placed in using in the hydraulic valve various type of set point elements responsible for the movement of the spool. Author proposed a combination of two types of motors: DC motors and stepper motors. The motors working differentially, by used of the bolt-nut system. The invention was described by the author as patent no. P.421994. In following article author focused mainly on the electronic controller which was based on the 32-microcontroller with DMA and FPU. The system provided Bluetooth wireless communication, support for the industrial CAN interface and a modular structure allowing for easy future upgrade. During experimental investigations, step response was collected to show the operation of the valve.