The sensor-less torque/flux regulator system 114 is further configured to receive information on motor control values/parameters, i.e. a torque reference Tref and a flux reference Tref. The torque reference Tref may depend on a target torque Tt provided by means of an electronic control unit 110 of the laundry treating machine 100, illustrated in Figure 2. For example, the electronic control unit 110 may be configured to control the operating of laundry washing machine based on the selected laundry treating program. Preferably, the electronic control unit 110 may be configured to provide the target torque Tt which is regulated (instant by instant) on the basis of the laundry treating program which the laundry treating machine 100 is performing. Preferably, the target torque Tref may correspond to the motor corresponding to the torque to be provided to the drum 104. The flux reference Tref may be provided by means of an electronic control unit 110 of the laundry treating machine 100. Preferably the electronic control unit 110 may be configured to provide the flux reference Tref depending on the laundry treating program which the laundry treating machine 100 is performing. The sensor-less torque/flux regulator system 114 is further configured to provide a plurality of inverter control signals, preferably six inverter control signals G UH( , G UL( , G VH( , G VL( , G WH( , G WL( (schematically illustrated in Figure 5). It is understood that inverter control signals G UH( , G U ( , G VH( , G VL( , G WH( , G WL( are configured to control the switching units of the inverter 5 . For example inverter control signals G UH( , G UL( , G VH( , G VL( , G WH( , G WL( may be indicative of duty cycles of the command signals provided to the switching units (not illustrated) of the inverter 5 . The inverter control signals G UH( , G U ( , G VH( , G VL( , G WH( , G WL( may be also per-unit signals indicative of the fraction of DC- link voltage to be applied to each phase of the electric motor 6. It is understood that inverter control signals G UH( , G UL( , G VH( , G VL( , G WH( , G WL( may be associated to the pulse width modulation signals (PWM).