A steer-by-wire steering assembly

A method of controlling a steer-by-wire steering assembly for a vehicle having a housing;

• at least one electronic control unit;
• a motor assembly having at least one rotor and at least one stator and the at least one electronic control unit is configured to control the motor assembly, an actuator operatively coupled to the at least one rotor and a steering shaft connectable to a first tie rod and a second tie rod, the steering shaft configured to engage with the actuator and to move longitudinally with respect to the housing when the motor assembly is actuated, the method comprising:
• detecting a centre reference target of the steering shaft with a steering shaft displacement sensor;
• sending a signal from the steering shaft displacement sensor to the at least one electronic control unit;
• determining a vehicle steady state condition;
• determining in dependence of the signal from the steering shaft displacement sensor that a displacement of the steering shaft is offset when the vehicle is in a vehicle steady state.

A steer-by-wire steering assembly for a vehicle comprising:

• a housing;
• at least one electronic control unit;
• a motor assembly having at least one rotor and at least one stator and the at least one electronic control unit is configured to control the motor assembly;
• an actuator operatively coupled to the at least one rotor;
• a steering shaft connectable to a first tie rod and a second tie rod, the steering shaft configured to engage with the actuator and to move longitudinally with respect to the housing when the motor assembly is actuated;
• a steering shaft displacement sensor and configured to send a signal to the at least one electronic control unit in dependence of detecting a centre reference target of the steering shaft;
• wherein the electronic control unit is configured to determine a rotation of a wheel and in dependence of the signal from the steering shaft displacement sensor determine that a displacement of the steering shaft is offset in dependence of the rotation of the wheel.

A steer-by-wire steering assembly for a vehicle comprising:

• a housing;
• at least one electronic control unit;
• a motor assembly having at least one rotor and at least one stator and the at least one electronic control unit is configured to control the motor assembly;
• an actuator operatively coupled to the at least one rotor;
• a steering shaft connectable to a first tie rod and a second tie rod, the steering shaft configured to engage with the actuator and to move longitudinally with respect to the housing when a first motor winding and/or a second motor winding is actuated;
• a steering shaft displacement sensor and configured to send a signal to the at least one electronic control unit in dependence of detecting a centre reference target of the steering shaft;
• at least one tire pressure sensor or tire pressure loss sensor configured to generate a pressure signal of a wheel mounted to the first tie rod or the second tie rod;
• wherein the electronic control unit is configured to determine a vehicle steady state condition, determine a steering shaft offset from the signal from the steering shaft displacement sensor, and determine a fault condition of the at least one tire pressure sensor on the basis of the determined vehicle steady state condition and the determined steering shaft offset.