# US 11,440,524 B2 · Brake control device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,440,524 B2 - Document ID: US11440524B2 - Status: Granted - Kind: B2 - Application number: 17/047,240 - Filed: 2019-04-26 - Published: 2021-12-16 - Granted: 2022-09-13 - Earliest claimed: 2018-04-27 - Assignees: Advics Co., Ltd. - Applicants: Advics Co., Ltd. - Inventors: Hirotaka Takeya; Shunsuke Murata; Keita Nakano - Web page: https://patentgrep.com/patent/US11440524B2 ## CPC - B60T 13/741: {acting on an ultimate actuator} - B60T 17/221: {Procedure or apparatus for checking or keeping in a correct functioning condition of brake systems (hydraulic pressure systems in general F15B19/00, F15B21/04; testing structures or apparatus G01M)} - B60T 8/00: Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force (by changing number of effective brake cylinders in power brake systems B60T17/10) - B60T 8/321: {deceleration (B60T8/34, B60T8/52, B60T8/54, B60T8/56, B60T8/58, B60T8/72, B60T8/86, B60T8/88 take precedence)} - B60T 13/58: Combined or convertible systems - B60T 13/662: {characterised by specified functions of the control system components} - B60T 13/746: {and mechanical transmission of the braking action} - B60T 17/22: Devices for monitoring or checking brake systems; Signal devices - H02P 29/024: Detecting a fault condition, e.g. short circuit, locked rotor, open circuit or loss of load - B60T 2201/12: Pre-actuation of braking systems without significant braking effect; Optimizing brake performance by reduction of play between brake pads and brake disc - B60T 2270/402: Back-up - B60T 2270/403: Brake circuit failure - B60T: VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL (electrodynamic brake systems for vehicle, in general B60L; brakes per se, i.e. devices where braking effect occurs, including ultimate brake actuators, F16D); ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES - H02P: CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS ## Abstract The present disclosure provides a brake control device applied to a vehicle including a hydraulic brake device that generates a hydraulic braking force by pressing a braking member with hydraulic pressure toward a member-to-be-braked that rotates integrally with a wheel; and an electric brake device that generates an electric braking force by pressing the braking member by driving a motor toward the member-to-be-braked. A controller that controls the electric brake device is provided. The controller executes, when a predetermined condition is satisfied, a positional control for driving a motor and moving a propeller shaft that transmits the driving force of the motor to the braking member toward the member-to-be-braked as compared to when the predetermined condition is not satisfied. ## Claims ### Claim 1 A brake control device applied to a vehicle comprising: a hydraulic brake device that generates a hydraulic braking force by pressing a braking member with hydraulic pressure toward a member-to-be-braked that rotates integrally with a wheel; and an electric brake device that generates an electric braking force by pressing the braking member by driving a motor toward the member-to-be-braked, wherein a propeller shaft that transmits the driving force of the motor to the braking member toward the member-to-be-braked, a controller that controls the electric brake device is provided, and the controller executes a positional control that the propeller shaft is moved closer to the member-to-be-braked by controlling the motor when a predetermined condition is satisfied than a position when the predetermined condition is not satisfied, wherein the controller executes the positional control that the motor is stopped when a current value exceeds a predetermined first threshold after an inrush current flows. ### Claim 2 (depends on 1) The brake control device according to claim 1, wherein when the hydraulic brake device of one or more wheels among a plurality of wheels becomes abnormal or when abnormality is predicted to occur as a case where the predetermined condition is satisfied, the controller executes the positional control for the electric brake device of the wheel. ### Claim 3 (depends on 1) The brake control device according to claim 1, wherein the controller executes the positional control when the vehicle has not started traveling and the electric braking force is not generated as a case where the predetermined condition is satisfied. ### Claim 4 A brake control device applied to a vehicle comprising: a hydraulic brake device that generates a hydraulic braking force by pressing a braking member with hydraulic pressure toward a member-to-be-braked that rotates integrally with a wheel; and an electric brake device that generates an electric braking force by pressing the braking member by driving a motor toward the member-to-be-braked, wherein a propeller shaft that transmits the driving force of the motor to the braking member toward the member-to-be-braked, a controller that controls the electric brake device is provided, and the controller executes a positional control that the propeller shaft is moved closer to the member-to-be-braked by controlling the motor when a predetermined condition is satisfied than a position when the predetermined condition is not satisfied, wherein the controller moves the braking member by a second predetermined distance in a direction toward the member-to-be-braked using the hydraulic pressure generated by the hydraulic brake device before executing the positional control. ### Claim 5 (depends on 4) The brake control device according to claim 4, wherein when the hydraulic brake device of one or more wheels among a plurality of wheels becomes abnormal or when abnormality is predicted to occur as a case where the predetermined condition is satisfied, the controller executes the positional control for the electric brake device of the wheel. ### Claim 6 (depends on 4) The brake control device according to claim 4, wherein the controller executes the positional control when the vehicle has not started traveling and the electric braking force is not generated as a case where the predetermined condition is satisfied. ### Claim 7 A brake control device applied to a vehicle comprising: a hydraulic brake device that generates a hydraulic braking force by pressing a braking member with hydraulic pressure toward a member-to-be-braked that rotates integrally with a wheel; and an electric brake device that generates an electric braking force by pressing the braking member by driving a motor toward the member-to-be-braked, wherein a propeller shaft that transmits the driving force of the motor to the braking member toward the member-to-be-braked, a controller that controls the electric brake device is provided, and the controller executes a positional control that the propeller shaft is moved closer to the member-to-be-braked by controlling the motor when a predetermined condition is satisfied than a position when the predetermined condition is not satisfied, wherein when the predetermined condition is satisfied, the controller executes the positional control by driving the motor so as to move the propeller shaft in the direction toward the member-to-be-braked, stopping the drive of the motor when a current value exceeds a predetermined first threshold after an inrush current flows, and thereafter, driving the motor to move the propeller shaft in the direction opposite to the member-to-be-braked, and stopping the drive of the motor when the current value falls below a predetermined second threshold. ### Claim 8 (depends on 7) The brake control device according to claim 7, wherein when the hydraulic brake device of one or more wheels among a plurality of wheels becomes abnormal or when abnormality is predicted to occur as a case where the predetermined condition is satisfied, the controller executes the positional control for the electric brake device of the wheel. ### Claim 9 (depends on 7) The brake control device according to claim 7, wherein the controller executes the positional control when the vehicle has not started traveling and the electric braking force is not generated as a case where the predetermined condition is satisfied.