B.Components Identification.

The hydractive suspension system of vehicle includes (PDF Review in operating principle) :

¨  an electronic control unit

¨   2 high pressure electrovalves

¨   vehicle speed sensor

¨  ·steering wheel angle sensor

¨  body movement sensor

¨  a brake pressure switch sensor

¨  acceleration sensor

¨  a "sport" setting selection switch with a built-in function warning lamp

¨  door switches

  Layout of components of hydractive suspension.

The electronic subsystem.

The suspension ECU takes signals from the various sensors and based on two sets of rules (one each for normal and sport suspension), activates the electric valves. Although there are two electric valves that select the suspension setting (one for the front and one for the rear wheels), the ECU operates them as if they were one valve, so in effect, the ECU only has a single output signal (PDF Review in operating principle).

The Electronic Control Unit represents  defective though it may be  by collecting, classifying, interpreting and analyzing sensory input. Once it has interpreted this data, it makes decisions and sends "marching orders" to the outposts in the hinterlands (Scott Memmer, 12.11.2000).

According to PDF Review in operating principle,the ECU uses 7 sensors, which generate a total of 10 'input parameters':

1) Vehicle speed

2) Steering wheel position  and speed

3) Body movement magnitude  and speed

4) Gas pedal press  and release  speed

5) Brake pressure sensor

6) Door/boot open sensor

7) Ignition switch on/off