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1、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_
2、angle. s indicates a single communicator, as in cis_steering_rack_joint. Communicators in the Suspension Test Rig :The communicators Belongs to the class Form minor role receives ci[lr]_camber_angle parameter_real Any Camber angle value from the suspension subsystem. Sets the correct orien
3、tation of the test rig wheels. ci[lr]_diff_tripot location any Location of the differential ci[lr]_toe_angle parameter_real any Toe angle value from the suspension subsystem. Sets the correct orientation of the test rig wheels. ci[lr]_suspension_mount mount any Part to which the test r
4、ig wheels can attach. ci[lr]_suspension_upright mount Any Upright part from suspension subsystem. ci[lr]_jack_frame mount Any Not matched (fixed to ground). ci[lr]_wheel_center location Any Location of the wheel center from the suspension subsystem. Test rig wheels attach to the suspensi
5、on at that location. cis_driveline_active parameter_integer Any Integer value stored in the suspension template/subsystem that indicates the activity of the drivetrain. cis_powertrain_to_body mount Any Part to which differential outputs are constrained. cis_leaf_adjustment_steps parameter_
6、integer Any Integer value stored in the leaf spring template (currently not available). cis_steering_rack_joint joint_for_motion Any Steering-rack translational joint from the steering subsystem. cis_steering_wheel_joint joint_for_motion Any Steering-wheel revolute joint from the steering
7、 subsystem. cis_suspension_parameters_ARRAY array any Array used in the suspension characteristic calculations; comes from the suspension subsystems Output Communicators in Suspension Test Rig The communicators Belongs to the class Form minor role outputs cos_leaf_adjustment_multipl
8、ier array Any Leaf Spring toolkit. It is currently not supported in the standard product. cos_characteristics_input_ARRAY array Any Suspension, vehicle, and test-rig parameters array IDs used by suspension characteristics calculations routines. co[l,r]_tripot_to_differential mount
9、 any Outputs the ge[lr]_diff_output parts. cos_tire_forces_array_left Array Any Outputs array of Adams IDs used by the conceptual suspension module. cos_tire_forces_array_right array any Outputs array of Adams IDs used by the conceptual suspension module. Communicators in the SDI Test
10、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 Belongs to the
11、 class Form minor role receives cis_body_subsystem mount inherit Output from the body subsystem. It indicates the part that represents the body. cis_chassis_path_reference marker Any Marker from the body subsystem. It is used to measure path, roll, and sideslip error in a co
12、nstant radius cornering maneuver. cis_driver_reference marker any Marker from the body subsystem. It is used in Adams/SmartDriver simulations. cis_engine_rpm solver_variable Any Adams/Solver variable for engine revolute speed, in rotations per minute, from the powertrain subsystem. ci
13、s_engine_speed solver_variable any Adams/Solver variable for engine revolute speed, in radians per second, from the powertrain subsystem. cis_measure_for_distance marker Marker used to measure the distance traveled in the forward direction of the vehicle, from the body subsystem. cis_
14、diff_ratio parameter_real Real parameter variable for final drive ratio, from the powertrain subsystem. cis_steering_rack_joint joint_for_motion front Steering-rack translational joint from the steering subsystem. cis_steering_wheel_joint joint_for_motion front Steering-whe
15、el revolute joint from the steering subsystem. cis_max_brake_value parameter_real Output from brake subsystem (maximum brake signal value). cis_max_engine_speed parameter_real Output from powertrain subsystem (maximum engine rpm value). cis_max_gears parameter_integer Output
16、 from powertrain (maximum number of allowed gears). cis_max_rack_displacement parameter_real Output displacement limits from steering subsystem. Used by the Standard Driver Interface. cis_max_rack_force parameter_real Output force limits from steering subsystem. Used by the Standar
17、d Driver Interface. cis_max_steering_angle parameter_real Output angle limits from steering subsystem. Used by the Standard Driver Interface. cis_max_steering_torque parameter_real Output from steering subsystem. cis_max_throttle parameter_real Output from powertrain (maximum
18、value of throttle signal). cis_min_engine_speed parameter_real Output from powertrain subsystem (minimum engine rpm value, used for shifting strategy). cis_rotation_diff diff Output from powertrain (it is a differential equation used to measure crankshaft acceleration; its integral
19、 is used for engine rpm). cis_transmission_spline spline Spline for transmission gears (output from powertrain: reduction ratios for every gear). cis_transmission_input_omega solver_variable The transmission input engine variable from the powertrain template. cis_clutch_diff di
20、ff Clutch slip differential equation from the powertrain template. cis_clutch_displacement_ic solver_variable The clutch initial displacement (engine crankshaft torque at static equilibrium) from the powertrain template. ci[lr]_front_suspension_mount mount front The hub parts
21、 (wheel carriers) from suspension templates (front and rear) ci[lr]_rear_suspension_mount rear The hub parts (wheel carriers) from suspension templates (front and rear) Output Communicators in SDI Test Rig The communicators Belongs to the class Form minor role outputs cos_brake_demand s
22、olver_variable Any Brake demand to the brake subsystem. cos_clutch_demand solver_variable Any Clutch demand to the powertrain subsystem. cos_desired_velocity solver_variable any Desired velocity Adams/Solver variable. Other subsystems can reference it. cos_initial_engine_rpm par
23、ameter_real Any Initial engine RPM real variable to the powertrain subsystem. cos_throttle_demand solver_variable any Throttle demand to the powertrain subsystem. cos_transmission_demand solver_variable Transmission (gear) demand to the powertrain subsystem. cos_sse_diff1 diff
24、 Differential equation computed during quasi-static prephase, used to control the vehicle longitudinal dynamics. 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 Comm
25、unicators 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: 2.If the template is a suspension template (for example, its major role is suspension), the template must contain a suspension parameters array.
26、 The suspension parameters array identifies to the suspension analysis how the steer axis should be calculated and whether the suspension is independent or dependent. 1.The template must be compatible with other templates and with the test rigs, for example, the .__MDI_SUSPENSION_TESTRIG. The templ
27、ate 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
28、both a left and right communicator of the specified name. Output Communicators in Suspension Templates The communicators Belongs to the class Form minor role receives co[lr]_suspension_mount mount inherit suspension_mount co[lr]_suspension_upright mount inherit suspension_upright co
29、[lr]_wheel_center location inherit wheel_center co[lr]_toe_angle parameter_real inherit toe_angle co[lr]_camber_angle parameter_real inherit camber_angle The co[lr]_suspension_mount output communicators publish the parts to which the test rig wheels should mount. As you create these comm
30、unicators, 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
31、 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
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