SIMPLIFIED ANALYSIS OF STEADY-STATE TURNING BEHAVIOR OF MOTOR VEHICLES

Abstract

AN APPROXIMATE METHOD IS PRESENTED WHICH PRODUCES A HANDLING DIAGRAM USEFUL FOR THE STUDY OF STEADY-STATE TURNING BEHAVIOR AT DIFFERENT VALUES OF STEER ANGLE, PATH RADIUS AND SPEED. THREE SUCCESSIVE PARTS DISCUSS HANDLING DIAGRAMS OF SIMPLE SYSTEMS; STABILITY OF THE STEADY-STATE TURN, AND THEORY APPLIED TO MORE ELABORATE SYSTEMS. ESSENTIALLY THE SAME THEORY FOR THE STEADY-STATE RESPONSE TO STEERING INPUT OF THE SIMPLE LINEAR TWO-DEGREE OF FREEDOM VEHICLE CAN BE APPLIED TO MORE COMPLEX LINEAR SYSTEMS. THE ONLY REAL DIFFERENCE IS THAT NEWLY INTRODUCED EFFECTIVE SLIP ANGLES AND EFFECTIVE CORNERING STIFFNESS OF FRONT AND REAR AXLES WILL REPLACE THE REAL SLIP ANGLES AND CORNERING STIFFNESSES OF THE TIRE PAIRS. /DOT/