Method for controlling at least one three-phase motor for a Cartesian robot implementing a safety function and system implementing such a method

Abstract

Title: Method for controlling at least one three-phase motor for a Cartesian robot implementing a safety function and system implementing such a method. The invention relates to a method for controlling at least one three-phase motor, comprising, for the implementation of a safety function, the following steps: - measurement of the supply current of said motor; - analog transformation of said measured current into at least one speed signal; - comparison of the voltage of the speed signal to a reference voltage; and - activation of said braking means of said motor when said voltage of the speed signal is greater than or equal to said reference voltage. Figure for the abstract: Fig. 1