# US 11,305,675 B2 · Disturbance cancellation and generation seat > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,305,675 B2 - Document ID: US11305675B2 - Status: Granted - Kind: B2 - Application number: 16/509,110 - Filed: 2019-07-11 - Published: 2020-03-05 - Granted: 2022-04-19 - Earliest claimed: 2018-09-04 - Assignees: GM Global Technology Operations LLC - Applicants: GM Global Technology Operations LLC - Inventors: Chengwu Duan; Jian Yao; David Sun - Web page: https://patentgrep.com/patent/US11305675B2 ## CPC - B60N 2/067: {by linear actuators, e.g. linear screw mechanisms} - B60N 2/501: {actively controlled suspension, e.g. electronic control} - B60N 2/02246: {Electric motors therefor} - B60N 2/0268: {using sensors or detectors for adapting the seat or seat part, e.g. to the position of an occupant} - B60N 2/509: {Seat guided by slides or the like} - B60R 16/023: for transmission of signals between vehicle parts or subsystems - H04L 12/40013: {Details regarding a bus controller} - B60N: SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR - B60R: VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) ## Abstract A disturbance cancellation and generation seat system includes a seat mounted to a structure of a vehicle. The seat is accelerated due to a disturbance acceleration received in the structure and transferred to the seat. A seat control unit generates a force cancellation command signal. An actuation device is connected to the structure and is in communication with the seat control unit. The actuation device in response to receipt of the force cancellation command signal induces a cancellation acceleration motion into the seat which is equal but opposite to and therefore cancels an acceleration motion of the seat induced by the disturbance acceleration. ## Claims ### Claim 1 A disturbance cancellation and generation seat system, comprising: a seat mounted to a structure of a vehicle, the seat accelerated due to a disturbance acceleration received in the structure and transferred to the seat, wherein the disturbance acceleration defines multiple acceleration values each defining a transmission shift event; a seat control unit generating a force cancellation command signal; and an actuation device connected to the structure and in communication with the seat control unit, the actuation device in response to receipt of the force cancellation command signal inducing a cancellation acceleration motion into the seat which is equal but opposite to and therefore cancels an acceleration motion of the seat induced by the disturbance acceleration. ### Claim 2 (depends on 1) The disturbance cancellation and generation seat system of claim 1, further including a force sensor connected to the seat generating a force signal corresponding to a weight of an occupant of the seat. ### Claim 3 (depends on 2) The disturbance cancellation and generation seat system of claim 2, wherein the force signal from the force sensor is converted in the seat control unit to a mass of the occupant. ### Claim 4 (depends on 3) The disturbance cancellation and generation seat system of claim 3, wherein an acceleration equal but opposite to the disturbance acceleration necessary to keep a net force acting on the occupant at substantially zero is calculated in the seat control unit. ### Claim 5 (depends on 1) The disturbance cancellation and generation seat system of claim 1, further including a communication link connecting the seat control unit to the actuation device. ### Claim 6 (depends on 1) The disturbance cancellation and generation seat system of claim 1, further including a vehicle control unit receiving data from multiple vehicle sensors including acceleration sensors, speed sensors and ambient condition sensors. ### Claim 7 (depends on 6) The disturbance cancellation and generation seat system of claim 6, further including a Controller Area Network bus forwarding communication between the vehicle control unit and the seat control unit. ### Claim 8 (depends on 1) The disturbance cancellation and generation seat system of claim 1, wherein the acceleration values are saved in a lookup table. ### Claim 9 (depends on 1) The disturbance cancellation and generation seat system of claim 1, wherein the disturbance acceleration further defines multiple accelerations transferred to the seat and thereby to an occupant of the seat via a path from one or more wheels to the structure. ### Claim 10 A method for cancelling disturbance accelerations in a vehicle seat, comprising: measuring a disturbance acceleration acting to accelerate a seat mounted to a structure of a vehicle, wherein the disturbance acceleration defines multiple acceleration values each defining a transmission shift event; generating a force cancellation command signal in a seat control unit; connecting an actuation device to the structure and in communication with the seat control unit to receive the force cancellation command signal; and inducing a cancellation acceleration motion into the seat by operation of the actuation device in response to the force cancellation signal which is equal but opposite to and therefore cancels an acceleration motion of the seat induced by the disturbance acceleration. ### Claim 11 (depends on 10) The method for cancelling disturbance accelerations in a vehicle seat of claim 10, further including: connecting a force sensor to the seat; and generating a force signal corresponding to a weight of an occupant of the seat. ### Claim 12 (depends on 11) The method for cancelling disturbance accelerations in a vehicle seat of claim 11, further including converting the weight of the occupant to a mass of the occupant. ### Claim 13 (depends on 12) The method for cancelling disturbance accelerations in a vehicle seat of claim 12, further including applying the mass of the occupant to calculate an acceleration equal but opposite to the disturbance acceleration necessary to keep a net force acting on the occupant at substantially zero in the seat control unit. ### Claim 14 (depends on 10) The method for cancelling disturbance accelerations in a vehicle seat of claim 10, further including: collecting data from multiple vehicle sensors including acceleration sensors, speed sensors and ambient condition sensors; and forwarding the data to a vehicle control unit. ### Claim 15 (depends on 14) The method for cancelling disturbance accelerations in a vehicle seat of claim 14, further including forwarding the data from the vehicle control unit to the seat control unit. ### Claim 16 (depends on 10) The method for cancelling disturbance accelerations in a vehicle seat of claim 10, further including performing an estimation step using data generated by the seat control unit prior to the generating step, the estimation step incorporating estimated values of acceleration to cancel the disturbance acceleration. ### Claim 17 A disturbance cancellation and generation seat system, comprising: a seat mounted to a structure of a vehicle, the seat accelerated due to a disturbance acceleration received in the structure and transferred to the seat, wherein the disturbance acceleration defines multiple acceleration values each defining a transmission shift event; a force sensor connected to the seat generating a force signal corresponding to a weight of an occupant of the seat; a seat control unit converting the weight of the occupant to a mass of the occupant; a vehicle control unit receiving data from multiple vehicle sensors including acceleration sensors, speed sensors and ambient condition sensors and forwarding the data to the seat control unit; and an actuation device connected to the structure and in communication with the seat control unit, the actuation device in response to receipt of a force cancellation command signal generated by the seat control unit inducing a cancellation acceleration motion into the seat which is equal but opposite to and therefore cancels an acceleration motion of the seat induced by the disturbance acceleration. ### Claim 18 (depends on 17) The disturbance cancellation and generation seat system of claim 17, wherein the actuation device includes a contact member which extends outwardly to contact and to displace the seat, the contact member displacing the seat in a two-directional, outward and return displacement. ### Claim 19 (depends on 17) The disturbance cancellation and generation seat system of claim 17, wherein the actuation device includes a contact member which contacts and displaces the seat in a multi-directional, roll, pitch and yaw motion.