Electromechanical actuator with self-regulating control

An actuator and electromechanical technology, applied in the direction of relays, electromagnetic relays, electromagnetic relay details, etc., can solve the problem that the magnetic field sensor cannot have a signal-to-noise ratio

Pending Publication Date: 2021-01-08
G CARTIER TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As shown in this document, the location of the magnetic field sensor does not allow a signal-to-noise ratio for reliable power control of control coils in environments with external magnetic field disturbances, such as in automotive applications

Method used

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  • Electromechanical actuator with self-regulating control
  • Electromechanical actuator with self-regulating control
  • Electromechanical actuator with self-regulating control

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0063] figure 1 The structure of an electromechanical relay according to an embodiment of the present invention is schematically shown.

[0064] figure 1 The shown electromechanical relay comprises a fixed armature 1 - part of which is in the form of a magnetic core 2, a movable armature 3, a fixed working contact 4, a control coil 5 and a contact beam 6 which forms the free end of the movable armature 3 up to the contact 7's distal section. The fixed armature 1 and the movable armature 3 together form the magnetic circuit of the electromechanical relay.

[0065] The control coil 5 comprises a coil former 51 fixed to the stationary armature 1 and containing a cylindrical axial channel 52 extending along the longitudinal axis I-I and in which the magnetic core 2 is engaged. The coil winding 53 consists of an electrical conductor wound around the former 51, which is intended to be connected to an external source of nominal control voltage (not shown in the figure).

[0066] ...

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PUM

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Abstract

The invention relates to an electromechanical actuator comprising a control coil (5), a magnetic core (2) and a movable armature (3) which can be moved between an operating state and a rest state andwhich is returned to the rest state by means of an elastic return device (9). When the movable armature conducts a magnetic field generated by the powered coil, the movable armature is attracted by the magnetic core. Part of the leakage magnetic flux near the movable armature (3) passes through a Hall effect sensor (101) which drives a switch (102) connected in series with the control coil (5) soas to disconnect the power supply of the control coil (5) when the leakage magnetic flux exceeds a high threshold value and to supply power to the control coil (5) again when the leakage magnetic fluxis less than a low threshold value. Thus, the average value of the supply voltage of the control coil (5) is adjusted by preferably being exactly sufficient to maintain the electromechanical actuatorin the operating state.

Description

technical field [0001] The present invention relates to electromechanical actuators with control coils, in particular for use in motor vehicles, in order to perform various control or safety functions. Background technique [0002] Control coil electromechanical actuators consist of a control coil consisting of a winding of an electrical conductor intended to supply a rated control voltage via a voltage source or a current source; a fixed armature with a magnetic core placed on the axis of the control coil into the channel and intended to conduct the magnetic field generated by the current passing through the conductors of the control coil; and a movable armature for forming a closed magnetic circuit with the fixed armature. [0003] According to a first possibility, the movable armature comprises a part intended to be coupled mechanically to an external element intended to be displaced. In this case, the movable armature can be moved translationally or rotationally, and th...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): H01H47/32H01H47/00H01H47/02
CPCH01H47/32H01H47/02H01H47/001H01H47/002H01H50/021H01H47/22H01H2047/046H01H47/04
InventorJ-L·布雷埃雷
OwnerG CARTIER TECH