This standard specifies the special terms for the axis, angle, mechanical characteristics and handling characteristics of the steering system of two-wheeled motorcycles and mopeds. This standard is applicable to two-wheeled motorcycles and mopeds, and can also be used as a reference for other motorcycles. GB/T 15028.3-1994 Motorcycle Steering Stability Terminology Steering System GB/T15028.3-1994 Standard download decompression password: www.bzxz.net

National Standard of the People's Republic of China
Terminology of controllability and stability-Steering system
Motorcycles-Terminology of controllability and stability-Steering system
1 Subject content and scope of application
GB/T 15028.3-94
This standard specifies the special terms for the axis, angle, mechanical characteristics and control characteristics of the steering system of two-wheeled motorcycles and mopeds. This standard is applicable to two-wheeled motorcycles and mopeds, and can also be used as a reference for other motorcycles. 2 Referenced standards
GB5373 Determination of size and mass parameters of motorcycles 3 Axis and angles of the steering system 3.1 Steeraxis (Zh) The rotation axis of the steering system that coincides with the axis of the steering column (see Figure 1). 3.2 Steering angle steer angle (on)
Angular displacement of the handlebar relative to the steering axis 3.3 Wheel steer angle (ow)The angle between the longitudinal plane of the vehicle and the intersection of the plane of the front wheels and the plane of the road surface. 4 Dynamic quantities of tyre steering assembly 4.1 Steering velocity of the handlebars()The angular velocity of the handlebars relative to the Z axis. 4.2 Steering velocity (é)The angular velocity of the sprung part of the steering system relative to the Z' axis. 4.3 Steering torque steertorque
The torque relative to the steering axis.
4.4 Steering force steerforce
The quotient of the steering torque divided by half the width of the working centre of the handlebar (see GB5373 for the width of the working centre of the handlebar). 4.5 Steady state steer torqueThe torque acting on the handlebars to keep the vehicle-driver system in a certain state of motion. When the vehicle-driver system is steering, this torque can be divided into the following three forms: 4.5.1 Positive steer torque Steady-state steer torque in the same direction as the steering direction. 4.5.2 Neutral steer torque Approved by the State Administration of Technical Supervision on April 4, 1994 182
Dai Ti De
Implemented on November 1, 1994
Steady-state steer torque with a value of 0.
GB/T15028.3-94
Negative steer torque 4.5.3
Steady-state steer torque in the opposite direction to the steering direction. 4.6 Steady-state steer force Steady-state steer torque divided by half of the width of the working center of the direction. 4.7 Stiffness of the steering assembly The ratio of the load acting on the steering assembly by the road surface to the torsional deformation and bending deformation of the steering assembly are called torsional stiffness and bending stiffness respectively.
4.8 Friction torque of the steering assembly The minimum torque (excluding the friction between the tire and the road surface) that causes the steering assembly to rotate around the steering axis. 4.9 Damping torque of the steering assembly The damping torque relative to the steering axis at a certain steering speed (excluding the damping between the tire and the road surface). 4.10 Moment of inertia of the steer assembly The moment of inertia of the steer assembly relative to the steering axis under specified load conditions. 5 Steering characteristics of steering assembly 5.1 Steering under stationary conditions Steering control when the vehicle-driver system is stationary. Counter steering
Counter steering
Manipulation of the steering handlebar to balance (offset) changes in the vehicle's motion state. 5.3 Disturbed steer
An instantaneous rotation of the steering handlebar due to external disturbance. Loss of control in steering5.4
Uncontrollable rotation of the steering handlebar due to disturbance. Steering axis
Control angle
Steering handlebar control speed
Steering control force·
Steering control torque·
Steering control speed
Control characteristics of the steering system·
Mechanical characteristics of the steering system…·
Steering control system stiffness…·
Friction torque of the steering system·
Axis and angle of the steering system
Moment of inertia of the steering systembzxz.net
Damping torque of the steering system·
Steering control axis
Reset control·
Negative control torque
Interference control
Standstill state steering control
Out of control control
Steady-state steering control force
Steady-state steering control torque
Positive control torque
Neutral control torque·
Steering angle
GB/T15028.3—94
Appendix A
Chinese index (sorted by Chinese pinyin)
(Supplement)
GB/T 15028.3-94
Appendix B
English index
(supplement)
axis and angles of the steering assemblyc
counter steering
damping torque of the steering assemblydisturbed steering ....
dynamic quantities of the steering assemblyF
friction torque of the steering assemblyL
loss of control in stee
moment of inertia of the steering assembly. characteristics of the steering assemblysteering under stationary conditionssteering velocity
steering velocity of the handlebarsstiffness of the steering assemblywheel steer angle
Additional notes:
GB/T 15028.3—94
This standard was proposed by China National Automotive Industry Corporation. This standard is under the jurisdiction of the National Technical Committee for Automobile Standardization. This standard was drafted by the Ordnance Standardization Research Institute of the Ministry of Machinery and Electronics Industry. The main drafters of this standard are Han Huirong and Gao Yudong. 186
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