A system for determining position of a moveable component, moveable, in use, relative to the system, by calculating an, amplitude of a sinusoidal output waveform from a sensor, the system comprising: a sensor; and a controller, the controller configured to: provide a sample signal having a sample frequency that is four times a frequency of a sinusoidal excitation waveform provided to the sensor, the sensor having: a primary winding configured to receive the sinusoidal excitation waveform; and a secondary winding, inductively coupled to the primary winding in such a manner that the inductive coupling changes in response to movement of the moveable component, the secondary winding configured to produce the sinusoidal output waveform when the sinusoidal excitation waveform is provided to the primary winding; measure a first voltage of the sinusoidal output waveform and a second voltage of the sinusoidal output waveform using an analog-to-digital converter, ADC, the second voltage measurement occurring at a time corresponding to a period of the sample frequency following the first voltage measurement; calculate the amplitude of the sinusoidal output waveform based on the measurements of the first and second voltages, thereby calculating the amplitude using only two measurements taken a quarter of a period of the excitation waveform apart from one another; and determine a position of the moveable component based on the amplitude of the sinusoidal output waveform calculated. a sensor; and a controller, the controller configured to: provide a sample signal having a sample frequency that is four times a frequency of a sinusoidal excitation waveform provided to the sensor, the sensor having: a primary winding configured to receive the sinusoidal excitation waveform; and a secondary winding, inductively coupled to the primary winding in such a manner that the inductive coupling changes in response to movement of the moveable component, the secondary winding configured to produce the sinusoidal output waveform when the sinusoidal excitation waveform is provided to the primary winding; measure a first voltage of the sinusoidal output waveform and a second voltage of the sinusoidal output waveform using an analog-to-digital converter, ADC, the second voltage measurement occurring at a time corresponding to a period of the sample frequency following the first voltage measurement; calculate the amplitude of the sinusoidal output waveform based on the measurements of the first and second voltages, thereby calculating the amplitude using only two measurements taken a quarter of a period of the excitation waveform apart from one another; and determine a position of the moveable component based on the amplitude of the sinusoidal output waveform calculated. provide a sample signal having a sample frequency that is four times a frequency of a sinusoidal excitation waveform provided to the sensor, the sensor having: a primary winding configured to receive the sinusoidal excitation waveform; and a secondary winding, inductively coupled to the primary winding in such a manner that the inductive coupling changes in response to movement of the moveable component, the secondary winding configured to produce the sinusoidal output waveform when the sinusoidal excitation waveform is provided to the primary winding; a primary winding configured to receive the sinusoidal excitation waveform; and a secondary winding, inductively coupled to the primary winding in such a manner that the inductive coupling changes in response to movement of the moveable component, the secondary winding configured to produce the sinusoidal output waveform when the sinusoidal excitation waveform is provided to the primary winding; measure a first voltage of the sinusoidal output waveform and a second voltage of the sinusoidal output waveform using an analog-to-digital converter, ADC, the second voltage measurement occurring at a time corresponding to a period of the sample frequency following the first voltage measurement; calculate the amplitude of the sinusoidal output waveform based on the measurements of the first and second voltages, thereby calculating the amplitude using only two measurements taken a quarter of a period of the excitation waveform apart from one another; and determine a position of the moveable component based on the amplitude of the sinusoidal output waveform calculated.