# US 10,501,060 B2 · Braking control device for vehicle > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,501,060 B2 - Document ID: US10501060B2 - Status: Granted - Kind: B2 - Application number: 16/045,152 - Filed: 2018-07-25 - Published: 2019-02-28 - Granted: 2019-12-10 - Earliest claimed: 2017-08-23 - Assignees: Mazda Motor Corporation - Applicants: Mazda Motor Corporation - Inventors: Kazuhiro Takemura; Naoki Yamada; Yuta Tango; Shinichi Kaihara; Noboru Kyuto; Hirotaka Mochizuki; Takanobu Kamura - Web page: https://patentgrep.com/patent/US10501060B2 ## CPC - B60T 8/17555: {specially adapted for enhancing driver or passenger comfort, e.g. soft intervention or pre-actuation strategies} - B60T 7/042: {by electrical means, e.g. using travel or force sensors} - B60T 8/171: Detecting parameters used in the regulation; Measuring values used in the regulation - B60T 8/172: Determining control parameters used in the regulation, e.g. by calculations involving measured or detected parameters {(B60T8/17551 takes precedence)} - B60T 8/409: {characterised by details of the stroke simulating device} - B60T 13/662: {characterised by specified functions of the control system components} - B60T 13/686: {in hydraulic systems or parts thereof} - B60T 7/06: Disposition of pedal - B60T 8/326: {Hydraulic systems} - B60T 8/4081: {Systems with stroke simulating devices for driver input (B60T8/4077 takes precedence)} - B60T 2220/02: Driver type; Driving style; Driver adaptive features - B60T 2220/04: Pedal travel sensor, stroke sensor; Sensing brake request - B60T 2270/82: Brake-by-Wire, EHB - 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 ## Abstract A braking control device for a vehicle is provided, which includes an operating amount detecting part configured to detect an operating amount of a brake pedal, a reaction-force giving part configured to generate a reaction force of the brake pedal, a braking-force generating part configured to generate a braking force for wheels, and an ECU electrically connected with them and configured to control the reaction-force giving part and the braking-force generating part, and set a braking characteristic in which the reaction force according to a stepping force of the brake pedal and a deceleration of the vehicle have a logarithmic relationship, and when the reaction force is above a given reaction force. The ECU controls the braking-force generating part based on the braking characteristic while making the deceleration for the reaction force higher than the logarithmic relationship. ## Claims ### Claim 1 A braking control device for a vehicle, comprising: a stroke sensor configured to detect an operating amount of a brake pedal; a stroke simulator configured to generate a reaction force of the brake pedal based on the operating amount of the brake pedal; hydraulic brakes configured to generate a braking force for wheels; and an electronic control unit (ECU) electrically connected with the stroke sensor, the stroke simulator, and the hydraulic brakes, the ECU including a processor and a memory storing software modules to be executed by the processor, the software modules comprising: a control module to control the stroke simulator and the hydraulic brakes; and a braking characteristic setting module configured to set a braking characteristic in which the reaction force according to a stepping force of the brake pedal and a deceleration of the vehicle have a logarithmic relationship, and when the reaction force is above a given reaction force, the control module controlling the hydraulic brakes based on the braking characteristic setting module while controlling the deceleration of the vehicle to be higher than a deceleration of the vehicle corresponding to the reaction force according to the logarithmic relationship. ### Claim 2 (depends on 1) The braking control device of claim 1, wherein, when the reaction force is more than the given reaction force, the control module controls the hydraulic brakes so that the deceleration becomes proportional to the reaction force. ### Claim 3 (depends on 2) The braking control device of claim 2, wherein the braking characteristic setting module sets a stepping characteristic that is a correlation between a deceleration of the vehicle and a reaction-force giving value from a start to an end of stepping on the brake pedal, and a releasing characteristic that is a correlation between a deceleration of the vehicle and the reaction-force giving value from a start to an end of releasing the brake pedal, and the releasing characteristic is obtained by offsetting the stepping characteristic to a decreasing side of the reaction-force giving value. ### Claim 4 (depends on 3) The braking control device of claim 3, wherein the reaction-force giving value when the deceleration is zero in the releasing characteristic is set above 2 N and below 10 N. ### Claim 5 (depends on 1) The braking control device of claim 1, wherein the braking characteristic setting module sets a stepping characteristic that is a correlation between a deceleration of the vehicle and a reaction-force giving value from a start to an end of stepping on the brake pedal, and a releasing characteristic that is a correlation between a deceleration of the vehicle and a reaction-force giving value from a start to an end of releasing the brake pedal, and the releasing characteristic is obtained by offsetting the stepping characteristic to a decreasing side of the reaction-force giving value. ### Claim 6 (depends on 5) The braking control device of claim 5, wherein the reaction-force giving value when the deceleration is zero in the releasing characteristic is set above 2 N and below 10 N.