Electric parking brake control device and electric parking brake control method

• Main Authors: ARITOMI SHUNSUKE, NISHINO KIMIO, KOJIMA DAISUKE, MATSUZAKI NORIKAZU, SETO SHINJI
• Format: Patent
• Language: Chinese; English
• Published: 03.02.2023
• Subjects: ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION; 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

The purpose of the present invention is to control a pressing/pushing force with high precision regardless of the individual difference, use condition, and the like of a brake device. When controlling an electric motor (8) that imparts thrust to a piston that presses a brake pad, the present invention calculates, as a plurality of candidate values (c1, c2, c3), a current and a voltage during an idle current period, or a change in a function comprising the current and the voltage during the idle current period, during a current change period prior to the idle current period. Then, at a predetermined time T0 during the current change period, one of a plurality of candidate values (c1, c2, c3) is selected on the basis of the current and the voltage, and on the basis of the current and the voltage related to the selected candidate value or a change in the function, a characteristic parameter of the motor (8) is calculated, and a stop current of the motor (8) is calculated. 本发明的目的在于，不管制动装置的个体差和使用状况等，均高精度地控制按压推力。本发