ATTITUDE CONTROLLER FOR VEHICLE

• Main Author: OKUZUMI HIROSHI
• Format: Patent
• Language: English
• Published: 03.07.2001
• Edition: 7
• Subjects: BLASTING; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR; FLUID-PRESSURE ACTUATORS; FLUID-PRESSURE ACTUATORS, e.g. SERVO-MOTORS; HEATING; HYDRAULICS OR PNEUMATICS IN GENERAL; LIGHTING; MECHANICAL ENGINEERING; PERFORMING OPERATIONS; SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; TRANSPORTING; VEHICLE SUSPENSION ARRANGEMENTS; VEHICLES IN GENERAL; WEAPONS

PROBLEM TO BE SOLVED: To prevent the discomfortable vehicle behavior in a low frequency zone such as abrupt steering, abrupt starting and abrupt braking without impairing the comfortableness in a high frequency zone such as the traveling on a general road. SOLUTION: This attitude controller comprises actuators 6 respectively mounted between a spring lower member and a spring upper member 24 of each wheel, a controller for outputting the attitude control information on the basis of a sensor information signal, and a driving circuit outputting an operation signal to each actuator on the basis of the attitude control information input from the controller. The actuator comprises a cylinder 20 including the hydraulic fluid inside and connected to a suspension member at its lower end, a piston 22 defining the inside of the cylinder into a piston upper chamber 21a and a piston lower chamber 21b, a piston rod 26 connected to the piston 22 at its lower end and to a car body side member at its upper end, and capable of varying its length, and an electric motor 28 for rotating a part of the piston rod on the basis of an operation signal from the driving circuit.