Drive by wire presentation

1. Drive By Wire
Kishore
Lakshminarayan
Logeshwar

4. The Brakes By Wire
In future automobiles will serve as the vehicle for
high speed applications. Therefore it was very
important to make a vehicle that has a reliable and
effective brake. As discussed in the background
chapter, there are two ways that brakes can be
electronically controlled: electrohydraulic braking
and electromechanical braking. First, the car must
be capable of being manually operated.

5. Control of The Steering System
There are five components that were needed to control
the Smart Motor. The car controller, the PCM, the
Quicksilver Controller Interface, the Silver Nugget, and
of course the steering motor.
So, one guideline was to make sure the hardware
installed in the car does not interfere with the driver’s
space. Secondly, the hardware must be installed in such
a way that a person can drive the vehicle without having
to move any components of the by-wire system. Thirdly,
the by-wire system must be robust and durable.

6. The signal starts with the car Controller and is sent
to the PCM. From the PCM, a signal is then sent
through the Quicksilver Controller Interface
otherwise known as the breakout board to the
Silver Nugget controller and amplifier.
From the Silver Nugget, a voltage signal is then sent
to the smart motor. The smart motor then moves to
the position corresponding to the signal that was
sent. As the motor rotates, an encoder inside the
motor sends feedback through the Silver Nugget
and the breakout board straight to the PCM. Figure
shows the flow of signal PCM to smart motor.

7. Control of the steering system

8. TYLES OF DRIVE-BY-WIRE SYSTEMS

9. BRAKE-BY-WIRE
There are actually two types of brake-by-wire systems.
Hydraulic, or "wet," brake-by-wire uses additional
hydraulic parts to create pressure on the brakes.
Electric, or "dry," brake-by-wire, on the other hand,
simply uses an electric motor and no hydraulic brake
fluid.
STEEL-BY-WIRE
Sensors detect the movements of the steering wheel
and send information to a microprocessor. The
computer then sends commands to actuators on the
axles, which turn according to the driver's directions.

11. A new form of brake actuation should be implemented
into later iterations of this project. The steering system is
exceptional as it is though a new belt drive system may
be in order to reduce belt slip. More safety systems such
as mechanically actuated emergency stops should be
incorporated into future projects as to ensure safety.
Suggestions for sensors include an internal navigation
system and global positioning sensors. With these
sensors, the ability to make the vehicle drive
autonomously will also be a possibility. Installing sensors
at the wheels, steering shaft, and brakes for instance will
also make it possible to quantify how much turning and
braking is occurring in the vehicle. Thus, there will be a
basis for comparison to measure exactly how effective
the drive-by-wire system is.
CONCLUSION