adams_car通讯器
娄底三中-广州体育学院研究生
Communicators in the Suspension Test Rig
The following tables describe the input and
output communicators in the suspension test rig
(.__MDI_SUSPENSION_TESTRIG). In the tables,
the notation:
[lr] indicates that there is
both a left and right communicator of the
specified name, as in
ci[lr]_camber_angle.
s indicates a single communicator, as in
cis_steering_rack_joint.
Communicators in the
Suspension Test Rig
:The communicators
ci[lr]_camber_angle
Belongs to the
class
parameter_real
Form minor
receives
role
Any Camber angle value from
the
suspension subsystem. Sets the correct
orientation of the test rig wheels.
ci[lr]_diff_tripot
ci[lr]_toe_angle
location
parameter_real
ci[lr]_suspension_mount
ci[lr]_suspension_upright
ci[lr]_jack_frame
ci[lr]_wheel_center
mount
mount
mount
location
any
Any
Any
Any
any
any
Location of the differential
Toe angle
value from the suspension
subsystem. Sets the
correct orientation
of the test rig wheels.
Part to which the test rig wheels can
attach.
Upright part from suspension
subsystem.
Not matched (fixed to ground).
Location of the wheel center from the
suspension subsystem. Test rig wheels
attach to the suspension at that location.
cis_driveline_active parameter_integer Any
Integer value stored in the suspension
templatesubsystem that indicates the
activity of the drivetrain.
cis_powertrain_to_body
cis_leaf_adjustment_steps
cis_steering_rack_joint
cis_steering_wheel_joint
mount
parameter_integer
joint_for_motion
joint_for_motion
Any
Any
Any
Any
any
Part to which differential
outputs are
constrained.
Integer value
stored in the leaf spring
template (currently
not available).
Steering-rack translational
joint from
the steering subsystem.
Steering-wheel revolute joint from the
steering subsystem.
cis_suspension_parameters_ARRAY array
Output Communicators in Suspension Test
Rig
Array used in the suspension
characteristic calculations; comes from
the suspension subsystems
1
The communicators
cos_leaf_adjustment_multiplier
Belongs to
the Form minor
outputs
class
array
role
Any
Any
Leaf Spring
toolkit. It is currently not
supported in the
standard product.
Suspension, vehicle, and
test-rig
parameters array IDs used by
suspension characteristics calculations
routines.
cos_characteristics_input_ARRAY
array
co[l,r]_tripot_to_differential
cos_tire_forces_array_left
mount
any
Any
any
Outputs the ge[lr]_diff_output
parts.
Outputs array of Adams IDs used by
the conceptual suspension module.
Outputs
array of Adams IDs used by
the conceptual
suspension module.
Array
array
cos_tire_forces_array_right
Communicators in the SDI Test Rig
The
following tables describe the input and output
communicators in the SDI test rig
(.__MDI_SDI_TESTRIG). In the tables, the
notation [lr] indicates that there is both a left
and right
communicator of the specified name.
Input Communicators in SDI Test Rig
The
communicators
cis_body_subsystem
Belongs to the Form minor
receives
class
mount
role
inherit Output from the body subsystem. It
indicates the part that represents the
body.
Marker from the body subsystem. It
is
used to measure path, roll, and sideslip
error in a constant radius cornering
maneuver.
cis_driver_reference marker
cis_engine_rpm solver_variable
cis_chassis_path_reference
Any
marker
any
Marker from
the body subsystem. It is
used in
AdamsSmartDriver
simulations.
Any
AdamsSolver variable for engine
revolute
speed, in rotations per minute,
from the
powertrain subsystem.
cis_engine_speed
solver_variable
any
AdamsSolver
variable for engine
revolute speed, in radians
per second,
from the powertrain subsystem.
cis_measure_for_distance
cis_diff_ratio
marker
parameter_real
Marker used to
measure the distance
traveled in the forward
direction of the
vehicle, from the body
subsystem.
Real parameter variable for
final drive
ratio, from the powertrain
subsystem.
2
cis_steering_rack_joint
cis_steering_wheel_joint
cis_max_brake_value
cis_max_engine_speed
cis_max_gears
cis_max_rack_displacement
cis_max_rack_force
cis_max_steering_angle
cis_max_steering_torque
cis_max_throttle
cis_min_engine_speed
cis_rotation_diff
joint_for_motion
joint_for_motion
parameter_real
parameter_real
front
front
Steering-rack translational
joint from
the steering subsystem.
Steering-wheel revolute joint from the
steering subsystem.
Output from brake
subsystem
(maximum brake signal value).
Output from powertrain subsystem
(maximum
engine rpm value).
Output from powertrain
(maximum
number of allowed gears).
Output
displacement limits from
steering subsystem.
Used by the
Standard Driver Interface.
parameter_integer
parameter_real
parameter_real
parameter_real
parameter_real
parameter_real
parameter_real
diff
Output force limits
from steering
subsystem. Used by the Standard
Driver Interface.
Output angle limits from
steering
subsystem. Used by the Standard
Driver Interface.
Output from steering
subsystem.
Output from powertrain (maximum
value of throttle signal).
Output from
powertrain subsystem
(minimum engine rpm
value, used for
shifting strategy).
Output
from powertrain (it is a
differential equation
used to measure
crankshaft acceleration; its
integral is
used for engine rpm).
cis_transmission_spline
cis_transmission_input_omega
cis_clutch_diff
cis_clutch_displacement_ic
ci[lr]_front_suspension_mount
ci[lr]_rear_suspension_mount
spline
solver_variable
diff
solver_variable
mount
Spline for transmission gears (output
from
powertrain: reduction ratios for
every gear).
The transmission input engine
variable
from the powertrain template.
Clutch slip differential equation from
the
powertrain template.
The clutch initial
displacement (engine
crankshaft torque at
static equilibrium)
from the powertrain
template.
front
rear
The hub
parts (wheel carriers) from
suspension
templates (front and rear)
The hub parts
(wheel carriers) from
suspension templates
(front and rear)
Output Communicators in SDI
Test Rig
3
The
communicators
cos_brake_demand
cos_clutch_demand
cos_desired_velocity
Belongs to the Form
minor
outputs
class
solver_variable
solver_variable
role
Any
Any
any
Brake
demand to the brake subsystem.
Clutch demand
to the powertrain
subsystem.
Desired
velocity AdamsSolver
variable. Other
subsystems can
reference it.
solver_variable
cos_initial_engine_rpm parameter_real
Any
any
Initial engine RPM real
variable to the
powertrain subsystem.
Throttle demand to the powertrain
subsystem.
Transmission (gear) demand to
the
powertrain subsystem.
Differential
equation computed during
quasi-static
prephase, used to control
the vehicle
longitudinal dynamics.
cos_throttle_demand
solver_variable
cos_transmission_demand
cos_sse_diff1
solver_variable
diff
cos_std_tire_ref
location
X,Y,Z location of
standard tire
reference marker (positioned
appropriately at the correct height,
including 2% of road penetration).
Matching Communicators with Test Rigs
When
you create a template, you must meet the following
conditions to ensure that an analysis will
work with your new template:
the
template is a suspension template (for example,
its major role is suspension), the template must
contain a suspension parameters array. The
suspension parameters array identifies to the
suspension
analysis how the steer axis should
be calculated and whether the suspension is
independent or
dependent.
template must
be compatible with other templates and with the
test rigs, for example,
the
.__MDI_SUSPENSION_TESTRIG. The template must also
contain the proper output
communicators.
For example, for a suspension template to be
compatible with the suspension test rig, the
suspension
template must contain either the
mount or the upright output communicators. In the
following table, the
notation [lr] indicates
that there is both a left and right communicator
of the specified name.
Output Communicators
in Suspension Templates
The communicators
co[lr]_suspension_mount
co[lr]_suspension_upright
co[lr]_wheel_center
co[lr]_toe_angle
co[lr]_camber_angle
Belongs to the Form
minor
receives
class
mount
mount
location
parameter_real
parameter_real
role
inherit
inherit
inherit
inherit
inherit
suspension_mount
suspension_upright
wheel_center
toe_angle
camber_angle
4
The co[lr]_suspension_mount
output communicators publish the parts to which
the test rig wheels
should mount. As you
create these communicators, ensure that you set
their minor role to inherit. By
setting the
minor role to inherit, the communicator takes its
minor role from the minor role of the
subsystems that use your suspension template.
The co[lr]_wheel_center output communicators
publish the location of the wheel centers to the
test rig
so the test rig can locate itself
relative to the suspension. As you create these
types of communicators,
make sure that you
also leave their minor role set to inherit.
The toe and camber communicators
(co[lr]_toe_angle and co[lr]_camber_angle)
publish, to the test rig,
the toe and camber
angles set in the suspension so that the test rig
can orient the wheels correctly.
5