# US 10,246,063 B2 · Wheel reference balance estimator > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,246,063 B2 - Document ID: US10246063B2 - Status: Granted - Kind: B2 - Application number: 15/210,519 - Filed: 2016-07-14 - Published: 2018-01-18 - Granted: 2019-04-02 - Earliest claimed: 2016-07-14 - Assignees: Goodrich Corporation - Applicants: Goodrich Corporation - Inventors: Marc Georgin - Web page: https://patentgrep.com/patent/US10246063B2 ## CPC - B60T 8/1703: {for aircrafts} - 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 8/17616: {Microprocessor-based systems} - B60T 2250/04: Vehicle reference speed; Vehicle body speed - 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 Systems and methods are disclosed herein for controlling braking systems. In this regard, a method for controlling brakes may comprise receiving, by an antiskid control (ASK), a first wheel speed, calculating, by the ASK, a first wheel reference speed (WRS), and calculating, by the ASK, a first wheel reference estimate (WRE). In various embodiments, the method may further comprise determining if the first WRS is within a threshold value of the first WRE. In various embodiments, the method may further comprise calculating an ASK desired pressure. The ASK desired pressure may be calculated using the first WRS in response to the first WRS being within the threshold value of the first WRE. The ASK desired pressure may be calculated using the first WRE in response to the first WRS being outside the threshold value of the first WRE. ## Claims ### Claim 1 A method for controlling brakes, comprising: receiving, by an antiskid controller (ASK), a first wheel speed; calculating, by the ASK, a first wheel reference speed (WRS), the first WRS comprising a value corresponding to the first wheel speed when no brakes are applied; calculating, by the ASK, a first wheel reference estimate (WRE), the first WRE being an average of the first WRS; and determining, by the ASK, if the first WRS is within a threshold value of the first WRE. ### Claim 2 (depends on 1) The method of claim 1, further comprising: calculating, by the ASK, an ASK desired pressure, wherein, in response to the first WRS being within the threshold value of the first WRE, the ASK desired pressure is calculated using the first WRS. ### Claim 3 (depends on 1) The method of claim 1, further comprising: calculating, by the ASK, an ASK desired pressure, wherein, in response to the first WRS being outside the threshold value of the first WRE, the ASK desired pressure is calculated using the first WRE. ### Claim 4 (depends on 1) The method of claim 1, further comprising: receiving, by the ASK, a second wheel speed; and calculating, by the ASK, a second WRS, wherein the first WRE is calculated using the first WRS and the second WRS. ### Claim 5 (depends on 4) The method of claim 4, further comprising: receiving, by the ASK, a third wheel speed; receiving, by the ASK, a fourth wheel speed; calculating, by the ASK, a third WRS; calculating, by the ASK, a fourth WRS; and calculating, by the ASK, a second WRE, wherein the second WRE is calculated using the third WRS and the fourth WRS, the first WRS and the second WRS corresponding to a first set of wheels being located on a first landing gear and the third WRS and the fourth WRS corresponding to a second set of wheels being located on a second landing gear. ### Claim 6 (depends on 5) The method of claim 5, wherein the second WRE is calculated by calculating the arithmetic mean of at least the third WRS and the fourth WRS. ### Claim 7 (depends on 5) The method of claim 5, further comprising: determining, by the ASK, if at least one of the third WRS and the fourth WRS is within a threshold value of the second WRE. ### Claim 8 A brake control system, comprising: an antiskid control (ASK) configured to: receive a first wheel speed value to calculate a first wheel reference speed (WRS) and a second wheel speed value to calculate a second WRS, the first WRS comprising a value corresponding to the first wheel speed value when no brakes are applied; calculate a wheel reference estimate (WRE) using the first WRS and the second WRS, the first WRE being an average of at least the first WRS and the second WRS; and determine if at least one of the first WRS and the second WRS is within a threshold value of the WRE. ### Claim 9 (depends on 8) The brake control system of claim 8, wherein, in response to the first WRS being within the threshold value of the WRE, the ASK uses the first WRS to calculate a desired pressure. ### Claim 10 (depends on 8) The brake control system of claim 8, wherein, in response to the first WRS being outside the threshold value of the WRE, the ASK uses the WRE to calculate a desired pressure. ### Claim 11 (depends on 8) The brake control system of claim 8, wherein the WRE comprises an average value of at least the first WRS and the second WRS. ### Claim 12 (depends on 8) The brake control system of claim 8, wherein the threshold value comprises between 80% and 120%. ### Claim 13 (depends on 8) The brake control system of claim 8, wherein the first WRS is related to the first wheel speed value by a wheel slip value. ### Claim 14 A brake control system, comprising: a processor; a tangible, non-transitory memory configured to communicate with the processor, the tangible, non-transitory memory having instructions stored thereon that, in response to execution by the processor, cause an antiskid control (ASK) to perform operations comprising: receiving a first wheel speed; calculating a first wheel reference speed (WRS), the first WRS comprising a value corresponding to the first wheel speed when no brakes are applied; calculating a first wheel reference estimate (WRE), the first WRE being an average of the first WRS; and determining if the first WRS is within a threshold value of the first WRE. ### Claim 15 (depends on 14) The brake control system of claim 14, wherein the operations further comprise: calculating an ASK desired pressure, wherein, in response to the first WRS being within the threshold value of the first WRE, the ASK desired pressure is calculated using the first WRS. ### Claim 16 (depends on 14) The brake control system of claim 14, wherein the operations further comprise: calculating an ASK desired pressure, wherein, in response to the first WRS being outside the threshold value of the first WRE, the ASK desired pressure is calculated using the first WRE. ### Claim 17 (depends on 14) The brake control system of claim 14, wherein the operations further comprise: receiving a second wheel speed; and calculating a second WRS, wherein the first WRE is calculated using the first WRS and the second WRS. ### Claim 18 (depends on 17) The brake control system of claim 17, wherein the operations further comprise: receiving a third wheel speed; receiving a fourth wheel speed; calculating a third WRS; calculating a fourth WRS; and calculating a second WRE, wherein the second WRE is calculated using the third WRS and the fourth WRS, the first WRS and the second WRS corresponding to a first set of wheels being located on a first landing gear and the third WRS and the fourth WRS corresponding to a second set of wheels being located on a second landing gear. ### Claim 19 (depends on 18) The brake control system of claim 18, wherein the second WRE is calculated by calculating the arithmetic mean of at least the third WRS and the fourth WRS. ### Claim 20 (depends on 19) The brake control system of claim 19, wherein the operations further comprise: determining if at least one of the third WRS and the fourth WRS is within a threshold value of the second WRE.