Shulou(Shulou.com)11/24 Report--

Feifan Bach cockpit is designed and produced by Feifan Automobile. Feifan F7's "Feifan Bach cockpit" comes from "the father of western music-Bach". It takes into account luxury and comfort, highlighting taste and elegance. The Feifan Bach cockpit brings users an extremely intelligent and comfortable experience from the full dimensions of vision, hearing and body sensation, including the Bach seat, which has won the high score of China Automobile Research comfort Star History, Bach 3D vector sound technology, RISINGMAX with dual-zone two-way independent cinema function, and RISINGOS for intelligent scenes. At the same time, 9 dynamic isolation measures, "Bach Opera House" silent cockpit and intelligent motion sickness relief system, so that the Bach cockpit has an excellent dynamic performance.

First, the Feifan Bach cockpit-bringing the atmosphere of the mind cabin to an unprecedented height

1. Bach seat-China Automotive Research "comfort Star" highest score seat

Feifan F7 Bach seat, as the winner of the highest score in the history of SAIC's "comfort Star" test, is the four major technical strength of Feifan brand relying on SAIC's in-depth empowerment.

1) SAIC self-developed electric vehicle exclusive high-end seat platform

Feifan F7 is equipped with SAIC's new self-developed high-end seat platform for the first time, with three technical highlights of low seat, high strength and modularization. In the aspect of the seat lifting mechanism which directly affects the vertical space in the car, through the innovative replacement of the traditional tooth plate structure by the rack structure, the minimum height of the seat can be reduced by 28mm, and with the battery package thinned by the reclining structure about 30mm, the front vertical space of the Feifan F7 reaches 99cm.

As the most direct and important supporting mechanism for drivers, the Feifan F7 seat frame is made of high-strength steel treated by electrophoretic technology, and the rigidity of the frame exceeds the national standard by 30%, which not only lays a solid foundation for the safety of occupants. it also brings better support performance against the impact of g value for electric vehicle users.

In addition, this set of high-end seat platform has the good expansibility of flexible configuration function module through the design of reserved interface and space. Feifan F7 main seat rich heating, ventilation, massage, electric waist support, electric leg support, as well as zone-based control of the "hot stone physiotherapy" functions, all benefit from this performance.

2) the first set of full-index Chinese physical characteristics database

SAIC United Nations standardization authority, relying on human body curve scanning under three postures, carried out 3000 + person-times sampling for driver groups covering major areas of the country. As a result, the first set of Chinese physical characteristics database covering 23 characterization indicators and 5%, 50%, 95% somatotype specifications was constructed.

Relying on this database, the Feifan F7 Bach seat shows excellent ergonomic adaptability, and its seat cross-section design is highly in line with the human body curve, bringing the extremely comfortable ride experience. This can also be seen directly from a series of test data. In 95% of the standard stress tests, the pressure distribution of the main driving seat of the Feifan F7 is similar to that of the Mercedes-Benz S-class, and in the certification of the "comfort Star" of the China Automobile Research Institute, the Feifan F7 is the first car to get a full score in a total of 30 sub-items of pressure distribution.

3) seat unified mechanical analysis and waist optimization

The Feifan F7 Bach seat also focuses on optimizing waist comfort. Through unified mechanical analysis, the seat engineering team puts forward a "waist-friendly" solution from the system dimension.

Specific to the Feifan F7 Bach seat, the adjustment of the four-way waist support and the total 70mm soft foam layer can fit the back curve as far as possible; while the 580mm cushion, electric leg support, three layers of 65mm soft foam layer, together bring a large cushion contact area, these can bring better waist comfort. Feifan F7 rear seats also have the length of 496mm cushions, with 40mm super thick cushion filling, to bring users an extremely comfortable travel experience.

4) Research and optimization of vibration frequency of human body intolerance.

In addition to static analysis and optimization, Feifan F7 also studies the vibration and human body intolerance frequency under dynamic conditions, and optimizes the overall frequency spectrum of the seat and chassis.

As the supporting platform of the human body, from the perspective of vibration frequency, if the seat wants to be comfortable, its natural frequency must avoid the above two frequency bands-neither can form resonance with the suspension or amplify the impact, nor will it cause resonance or discomfort of the human body.

Based on this idea, Feifan F7 carried out a large number of sensitivity analysis and experimental verification in the development process. Finally, the excitation frequency of the locked road and the rotation frequency of the tire are mainly distributed in the range of 0-15Hz, while the main resonance frequency of human organs is 4-12Hz and the brain is 25Hz.

At the same time, the weakness is analyzed and optimized by virtual simulation, and through the structural strengthening of six positions, the first-order yaw mode of the seat is improved from 15Hz to close to 19Hz, which successfully avoids the main excitation range of the road surface and the main unbearable frequency range of the human body, thus achieving a more stable and comfortable ride experience.

2. Bach 3D Vector Sound-the industry's first intelligent sound solution

1) the first full-stack self-developed intelligent audio architecture with interactive direct access

First of all, "make sounds smart" needs to break down the barriers between different types of sounds. Feifan F7 breaks the traditional shackles of cockpit sound limited to multimedia experience, through multimedia sound effects, out-of-car cue sound and in-car interaction sound, and then realizes the unified planning and coordination of sound from the height of the system. This is the industry's first Bach 3D vector sound effect technology carried by Feifan F7.

The underlying capability that supports this goal is the first audio architecture in the industry that connects application layer, interaction layer, control layer and hardware layer from top to bottom in Feifan F7.

2) 3D scene sound effect, omni-directional stereoscopic sound perception

As an advocate of intuitive interaction, Feifan F7 applies 3D vector sound technology to smart driving scenes, 3D navigation sounds and system prompts for the first time, so that the direction of sound is always consistent with the direction of attention, and truly achieve full sensory security.

When the intelligent driving is turned on, the 3D voice of the intelligent driving is also directional or directional, and the driver can judge the direction according to the sound, and make evasive action at the first time to improve driving safety.

3) Optimization of sound effect perception

Relying on the new Bach audio architecture technology, the Feifan F7 also optimizes the sound perception in the car.

Active intelligent compensation of ambient volume: according to the current vehicle speed, air conditioning outlet block, etc., the volume of music, telephone, feedback tone and Chime sound is compensated to obtain better sound interaction effect.

Headrest automatic mode: F7 is equipped with headrest speakers to create a vehicle sharing, driving zone, the main driver exclusive mode, and can intelligently identify the driving position to do automatic adjustment mode.

3. RISING OS- intuitive interactive system with zero learning cost.

1) extremely intelligent "brain", Qualcomm Snapdragon 8155 vehicle gauge class flagship chip

Feifan F7 is equipped with the strongest Qualcomm Snapdragon 8155 gauge-level chip in the machine hardware. It adopts the top 7nm process technology in the industry, and has powerful computing, graphics, AI and signal processing capabilities.

2) RISINGMAX

Feifan F7 uses dual-zone, two-way entertainment technology, Bach intelligent cockpit to enable car entertainment scene. It used to row 43-inch wide true color triplet screen and the second row 8-inch interactive entertainment screen as the core, through the RISING OS intelligent interaction system, around multiple sensory contacts, multi-tone area voice recognition, to create a front and back row independent smart space experience, so that each can enjoy comfort, but also to achieve multi-screen interaction, three-screen interconnection effect, bringing immersive audio-visual enjoyment.

2. Dynamic comfort of Feifan Bach cockpit

1. Bach super filter chassis

1) the dynamic and stable posture comparable to that of super running

The roll gradient of Feifan F7 is 3.42deg/g, acceleration pitch gradient 1.73deg/g and brake pitch gradient 1.56deg/g. These data correspond to the tilt angle of the car body in the corresponding direction when bearing a g overload. The steering response linearity of 0-2Hz in the central area of Feifan F7 is 96.9%, so that in daily driving with an overload of less than 0.3g, the steering sensitivity of Feifan F7 is 1.88ppg, the linear deviation between wheel swing angle and steering wheel swing angle is very low, and the steering operation experience refers to which to hit, which brings users a pleasant driving experience.

2) the comprehensive vibration isolation rate of 95% is comparable to that of D-class luxury cars

No. 1: Michelin PSEV tire, soft formula damping starts from the tire.

2nd weight: ultra-high stiffness hub to ease road excitation.

The third weight: 88% aluminum alloy lightweight design under the Reed, taking into account both sports and comfort.

No. 4: Weibak hydraulic bushing can effectively restrain the large impact vibration of the road surface.

5th weight: Tenak high-end MTVCL series recovery spring shock absorber to reduce the wheel jump up and down.

No. 6: luxury class three-channel TopMount support, flexible solution for high / low amplitude.

No. 7: Bosch flagship product line BD series belt drive EPS steering system to accurately point where to hit.

No. 8: ultra-high strength threshold beam and floor to reduce body resonance.

9th weight: Bach ergonomic seat, the thickest filling in the same class maximizes the filtered vibration.

2. Mute system of "Bach Opera House"

NVH quiet performance is an important indicator of vehicle luxury texture. Feifan F7 Bach cockpit starts from two dimensions of "sound source optimization" and "path optimization" to create "opera house" level mute.

1) Sound source optimization

In vehicle driving, the size and size of wind noise is directly related to the appearance design. Feifan F7 reduces air turbulence through hydrodynamics optimization, thus reducing vehicle wind noise.

The R & D team uses a new transient simulation technology and full-scale acoustic module wind tunnel technology to assist in the external modeling wind noise design of F7. Among them, aiming at the 10 key areas of wind noise of front engine hatch cover, windshield, front triangle window, front window glass, front door sealing system, rear side window glass, rear door sealing system, rear fixed triangle window, hatchback tail door, etc., continuously improve the seams, position accuracy, DTS, segment difference, interference, seam separation, etc., and reduce the wind-noise index of Feifan F7 as a whole.

In terms of road noise suppression, Feifan F7 uses ultra-high rigid wheels, and its hub stiffness reaches 73e, compared with mainstream wheels.

The hub stiffness is increased by 20%, which can effectively reduce the road noise index.

Feifan F7 has carried out a series of targeted optimization of the motor components, through the three major designs of the auxiliary slot and oblique pole optimization of the integrated motor, the meshing optimization of the transmission gear and the modal topology self-optimization technology of the shell, so that the operation of the motor has reached a super-silent state. the mute level is 6dB ahead of the industry, which greatly improves the driving comfort. At the same time, the electric shaft is also covered with a "hard-soft-hard" three-layer sound insulation pad to stifle EDS noise in "swaddling clothes".

2) path optimization

Feifan F7 omni-directional acoustic package comprehensively optimizes the noise transmission path.

In the glass part, the whole car uses 10 pieces (front windshield, dome ceiling, four exit windows, four front and rear triangular windows) double layer glue mute glass, among which the front windshield glass and dome ceiling use 5mm mute glass, and the front / rear door windows use 6mm mute glass.

In the mechanical part, the front circumference, floor and spare tire compartment use EVA+PU double-layer acoustic structure, which is 25% higher than the sound insulation of ordinary blanket + PU.

In the cavity part, the fender cavity is designed with partition and vibration stop, which can effectively eliminate resonance and howling.

3. Bach carsickness relief system

Basic principle of carsickness: motion sickness. The brain's perceptual disorder between the movement of the vehicle and the rest of the body, as well as the accompanying physiological discomfort.

Carsickness relief principle: avoid or reduce exercise stimulation or environmental stimulation.

Intelligent motion sickness relief system: five sense integration of vision (driving field of vision, deceleration glass, atmosphere light), hearing (vector sound effect with direction, auditory comfort zone of sound, NVH), tactile sense (sitting posture adjustment, air volume adjustment, temperature adjustment), balance sense (dynamic response, brake foot feeling, kinetic energy recovery), ontology (seat vibration frequency, seat pressure decomposition, joint head support). So as to effectively reduce the carsickness of the members of the car.

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