the device is meant to move the solar protection means from a first position , among at least two predetermined positions , toward a second position to adapt to a variation in sunshine . it comprises a logic which breaks down movement from the first to the second position into a minimum of two steps separated by a time interval . a command activated by a user during said interval activates the following step and reduces the interval by a fraction . the activation of an order after the interval and during the operation of the following step increases the interval by a fraction . the control device is in this way capable of adapting to the behavior of the user .