METHOD FOR DETERMINING ELECTROMAGNET ARMATURE POSITION AND DEVICE FOR ITS IMPLEMENTATION Russian patent published in 2023 - IPC H01F7/18 

FIELD: electrical engineering.

SUBSTANCE: invention can be used in the control of drive electromagnets (EM) of valves and switching devices. The technical result of the claimed invention is the expansion of functionality by determining the position of the armature of the electromagnet without moving its moving parts. To do this, the voltage is measured at the output of the electromagnet power source, the power source is connected to the winding, the threshold value of the current in the winding is set, upon reaching which the power source is disconnected from the winding, and the time interval is measured from the moment the power source is connected to the electromagnet winding until the current in the winding reaches threshold value, and the values of this time interval and the voltage of the power source determine the position of the armature in relation to the stop (initial gap) without triggering the electromagnet. Moreover, the threshold value of the current in the winding is chosen below the minimum possible value of the current in the winding, at which the operation of the electromagnet is possible during operation. A functional diagram of a device for determining the position of the EM armature is also proposed, focused on using the PIC16F1778-I/SO microcontroller as the main calculating element, which ensures the implementation of the operations of the proposed method. Most of the functional diagram of the device is built using the internal peripheral modules of the microcontroller. If the EM is used as an actuator for an electric valve (EV) designed to open and close the working line through which a liquid or gaseous working fluid is supplied to the consumer, then the absence of actuation when determining the initial gap allows you to repeatedly control the initial gap without disturbing the work system in which EV is used, and to prevent unproductive consumption of the working fluid.

EFFECT: expansion of functionality by determining the position of the armature of the electromagnet without moving its moving parts.

7 cl, 6 dwg, 2 tbl