Method for controlling activation of an electromechanical actuator

Abstract

The invention concerns a method for controlling activation of an electromechanical actuator via a command transmitter and a command receiver placed respectively one upstream and the other on the actuator power supply line. One activating command includes a temporal sequence of a whole number of half-periods during which the line is open and a whole number of half-periods during which the line is closed. The method is characterized in that a stop command consists in opening the line for a duration strictly longer than one half-period, followed by a closure of the line. Said command method is simple, economical, reliable and has short reaction time to a stop command and requires no other wiring apart from the electric power supply wiring of the actuators.

Description

technical field [0001] The invention relates to a method as defined in the preamble of claim 1 . The invention also relates to a device, a command sender and a command receiver that can implement the method. Background technique [0002] Drives such as single-phase asynchronous motors or DC motors with rectifiers or AC / DC converters, reversible rotation, are often used in building comfort and / or safety features, such as driving curtains, ventilation or closing vanes. [0003] As shown in Figure 1, two parallel asynchronous or "induction motor" type drives A1 and A2 are mounted on two phase lines P1 and P2, and a neutral line LN. In each driver, a phase-shifting capacitor C1, C2 is connected between P1 and P2, and two coils ED1, EG1 and ED2 and EG2 of the driver are connected between P1 and LN, P2 and LN respectively. [0004] Movement in a first direction powered to the drive between P1 and LN and in a second direction powered to the drive between P2 and PN is available. ...

AI Technical Summary

Problems solved by technology

The disadvantage of the described method is that, in addition to the drive feed line, a control line is necessary

[0023] The described devices of the prior art, although simple in principle, are still too complex to be compared with other technologies such as infrared or radio wave communication

In fact, although they are more expensive, the described technologies do not have to connect control points and are generally cheaper

[0024] On the other hand, for certain applications, such as controlling doors or fan blades, even the simplest systems in the prior art cannot be sufficiently secured, and there are still accidents due to disturbances on the grid feeder lines.

[0025] Finally, if the drive consists of a direct current motor and a converter AC / DC that can be powered directly from the mains, there is no simple single control device and / or master controller that can control the direction of rotation

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