BRAKE CONTROL DEVICE FOR ELECTRIC VEHICLE

• Main Authors: YOSHIDA, Taichi, WATANABE, Tomoki
• Format: Patent
• Language: English; French; German
• Published: 21.07.2021
• Subjects: ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; ARRANGEMENTS OR DISPOSITIONS OF BRAKES OR OTHER RETARDINGAPPARATUS IN RAIL VEHICLES; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; BRAKES OR OTHER RETARDING APPARATUS PECULIAR TO RAILVEHICLES; PERFORMING OPERATIONS; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OFVEHICLES; RAILWAYS; TRANSPORTING; VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES; VEHICLES IN GENERAL

A variable load calculator (11) calculates a variable load command VL based on AS pressure and a predetermined table. A vehicle deceleration calculator (12) calculates vehicle deceleration ± based on a brake notch command BN and a predetermined table. A required braking force calculator (13) calculates required braking force BL by multiplying a weight indicated by the variable load command VL and the vehicle deceleration ±. An electric braking controller (14) calculates an electric braking pattern in accordance with the required braking force BL and then transmits the electric braking pattern to an inverter controller. The electric braking controller (14) calculates an electric braking force produced by operation of the electric motor and then transmits to a subtractor (15) as feedback BT the electric braking force adjusted in accordance with a speed of the electric motor. The subtractor (15) transmits to a mechanical brake as a mechanical braking command a result obtained by subtracting the feedback BT from the required braking force BL.