Position sensor system and method, robust against disturbance field

A position sensor system comprising:

• a magnetic field generator movable relative to a first and a second sensor device or vice versa, and being adapted for providing a first magnetic field vector to the first magnetic sensor device and for providing a second magnetic field vector different from the first magnetic field vector, to the second magnetic sensor device;
• the first magnetic sensor device being adapted for determining first vector data related to a combination of said first magnetic field vector and an external disturbance field, when present;
• the second magnetic sensor device being adapted for determining second vector data related to a combination of said second magnetic field vector and said external disturbance field, when present;
• the position sensor system further comprising at least one processor adapted for receiving the first vector data and the second vector data, and adapted determining a position of the magnetic field generator relative to the first and the second magnetic sensor device, based on the first vector data and the second vector data in a manner which eliminates the external disturbance field;
• wherein
• the first magnetic sensor device is configured for measuring, at a first sensor position, a first magnetic field component oriented in a first direction and a second magnetic field component oriented in a second direction;
• and
• the second magnetic sensor device is configured for measuring, at a second sensor position, a third magnetic field component oriented in said first direction and a fourth magnetic field component oriented in said second direction;
• and
• the magnetic field generator is magnetized such that, and the first magnetic sensor device is oriented relative to the magnetic field generator such that the first magnetic field component is substantially 90° phase shifted relative to the second magnetic field component, and
• the magnetic field generator is magnetized such that, and the second magnetic sensor device is oriented relative to the magnetic field generator such that the third magnetic field component is substantially 90° phase shifted relative to the fourth magnetic field component;
• and
• the first and the second magnetic sensor device are spaced apart such that the first magnetic field component is phase shifted relative to the third magnetic field component by a value in a range from 30° to 330°.