A control system for controlling a continuously variable transmission, the continuously variable transmission having a primary pulley and a secondary pulley with a V-belt looped around the primary and secondary pulleys, the control system comprising: a first target wheel attachable to the primary pulley and a second target wheel attached to the secondary pulley, each of the first target wheel and the second target wheel having a plurality of identical target elements arranged at regular intervals around a circumference of the respective target wheel, wherein the width of each target element continuously changes in axial direction; a sensor device comprising: a first sensor probe which is operable to detect the target elements of the first target wheel and to provide a first time based signal that represents both the rotational speed and the axial displacement of the first target wheel based on the detection of the target elements; a second sensor probe which is operable to detect the target elements of the second target wheel and to provide a second time based signal that represents both the rotational speed and the axial displacement of the second target wheel based on the detection of the target elements; and a processing unit which is configured to determine the axial displacement and the rotational speed of the primary pulley based on the first time based signal, to determine the axial displacement and the rotational speed of the secondary pulley based on the second time based signal, and to to provide said determined axial displacements and determined rotational speeds of the primary pulley and of the secondary pulley as control input parameters to the control system. a first target wheel attachable to the primary pulley and a second target wheel attached to the secondary pulley, each of the first target wheel and the second target wheel having a plurality of identical target elements arranged at regular intervals around a circumference of the respective target wheel, wherein the width of each target element continuously changes in axial direction; a sensor device comprising: a first sensor probe which is operable to detect the target elements of the first target wheel and to provide a first time based signal that represents both the rotational speed and the axial displacement of the first target wheel based on the detection of the target elements; a second sensor probe which is operable to detect the target elements of the second target wheel and to provide a second time based signal that represents both the rotational speed and the axial displacement of the second target wheel based on the detection of the target elements; and a processing unit which is configured to determine the axial displacement and the rotational speed of the primary pulley based on the first time based signal, to determine the axial displacement and the rotational speed of the secondary pulley based on the second time based signal, and to to provide said determined axial displacements and determined rotational speeds of the primary pulley and of the secondary pulley as control input parameters to the control system. a first sensor probe which is operable to detect the target elements of the first target wheel and to provide a first time based signal that represents both the rotational speed and the axial displacement of the first target wheel based on the detection of the target elements; a second sensor probe which is operable to detect the target elements of the second target wheel and to provide a second time based signal that represents both the rotational speed and the axial displacement of the second target wheel based on the detection of the target elements; and a processing unit which is configured to determine the axial displacement and the rotational speed of the primary pulley based on the first time based signal, to determine the axial displacement and the rotational speed of the secondary pulley based on the second time based signal, and to to provide said determined axial displacements and determined rotational speeds of the primary pulley and of the secondary pulley as control input parameters to the control system.