Sign

The block implements the calculation of the input signal sign according to the following algorithm:

where u(t), y(t) are input and output vector signals. In the case of a vector input signal, the block calculates the sign of each of the elements of the input vector: where u_i(t), y_i(t) are the i-th elements of the input and output vector signals u(t), y(t), n≥2 is the dimension of the input signal.