Electric Power Steering (EPS)

In the case of Electric Power Steering, a sensor registers
the driver's steering movements and electronically controls
an electric motor on the steering column or the steering rack.
This generates a torque sufficient to the requirements, which
supports the driver's steering movement. Bosch thus enables
passenger- and engine- compartment application. In addition
to the series of asynchronous motors already in production,
Bosch will, in future, also be offering motors from the brush-
less Permanently Stimulated Magnet (PSM) series, with or
without integrated control and regulation electronics. These
can be used in electromechanical steering systems with rack
forces of up to 10,4 kN (ASM) and, in future, even up to 13 kN
(PSM). Due to the principle involved, the asynchronous motors
(ASM) have no locking moment, the lowest torque undulation
and a high safety standard, thus fulfilling in particular the high
demands made on EPS motors. The PSM- series offers high-
er efficiency, smaller space requirements and lower weight.
They thus make an additional contribution to reductions in con-
sumption and emissions.