ANTI-SKID CONTROL BY REGENERATIVE BRAKING OF ELECTRIC MOTOR VEHICLE

• Main Authors: ANDO MASAKI, SAKAI TOSHIYUKI, TERADA MITSUTAKA
• Format: Patent
• Language: English
• Published: 22.12.1994
• Edition: 5
• Subjects: ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ELECTRIC EQUIPMENT OR PROPULSION OF ELECTRICALLY-PROPELLEDVEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES, IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; PERFORMING OPERATIONS; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OFVEHICLES; TRANSPORTING; VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES; VEHICLES IN GENERAL

PURPOSE:To conduct a smooth anti-skid control without vigorously increasing/ decreasing a braking force by switching a method for controlling an electric motor from a torque control to a number-of-revolution control at the time of the anti-skid control and continuously varying a regeneratively braking force to be applied to wheels. CONSTITUTION:A vehicle controller 20 operates a slip ratio, and judges a skid state of a wheel 11 according to whether the ratio is a predetermined value or less than the value. When the wheel 11 falls in a skid state, the controller 20 so controls a motor controller 30 that the controller 30 directly controls an electric motor 10 by switching the motor from a number-of-revolution control to a torque control. Accordingly, a regeneratively braking force to be applied to the wheel 11 is continuously varied to conduct an anti-skid control. Thus, a smooth anti-skid control can be conducted without vigorously increasing/ decreasing the braking force.