[FSE] Plakáty do Itálie - beta verze

Středa Září 12 08:06:26 CEST 2012

Vazeni, ja jsem vam sve komentare posla vcera do konference. Bohuzel asi 
vas moderator spi a nejak se to zaseklo. Takze pro moderatora FSE 
konference, klidne muj mail ze vcerejsi noci zahod. Mohl jsem jit klidne 
spat o hodinu driv:-(
Tyto prelozene texty jsou o moc lepsi. Dovolil bych si jenom par 
komentaru k poslednimu plakatu.

1) V Technical details vam chyby texty co je BLDC, 40 pole with hall ....
     4100 at fully charged ??? proboha co? nabita baterka nebo pri plnem 
utoku?
     kosmeticka pripominka moment se udava v jednotkach Nm stejne jako 
vykon v kW chapu ze to nevypada graficky hezky, ale proste je to uzivane 
znaceni.

2) sekce motor controller
  We use self-made motor controller optimized for our particular motor. 
Because of
very low impedance of our motor windings (60?H) the control algorithm is 
based on
hysteresis control method with  limited switching  frequency. As a  
feedback  it uses hall
sensors  from  the motor and *it can also drive sensorless.*

co to ma znamenat??? je bezsenzorove rizeni... sensorless control.
Podle meho by spravne melo byt neco ve smyslu
As a  feedback  it uses hall sensors  mounted in the motor, the 
sensorless control is possible too.

  Communication with other devices is done by CAN bus and information about
pedal position is recieved by the extra RS232 interface because of 
safety reasons.
*These communication interfaces can also be USB and wireless.* LCD 4 
line display
shows status of motor controller with the most important system 
variables like motor
temperature, *controller cooler  temperature*, RPM, *T*ractive voltage 
and current, error
messages. It also has features like datalogging variables to internal 
memory and a
lot  of  protections.  The  motor  controller  was  developed  as an  
universal  motor
controller, which can drive all types of motors as for example BLDC, 
PMSM and AC
induction motor. All depends on  the  firmware which  is actually used.

*These communication interfaces can also be USB and wireless....*To tam 
absolutne nepatri.. akorat to mate ctenare. Pouzivate to? ne

controller cooler temperature... co to je? vy chladite procesor? nema 
tam byt converter?

Tractive ... proc velky T? vsude jsou maly pismenka tak maly..

Vic uz nehledam. Hezky den, H.

S pozdravem Honza Bauer

Dne 12.9.2012 3:08, Martin Borýsek napsal(a):
>
> Plakáty jsou hotové a nahrané na uloz.to i na FTP. Heslo pro uloz.to 
> je CVUT (s velkýma písmenama, bez diakritiky).
>
> http://www.uloz.to/xHiyiCh/plakaty-eps-zip (ve vektorech)
> http://www.uloz.to/xvVHDnu/plakaty-cdr-zip (originál Corel Draw)
>
> http://www.uloz.to/x4qsQrv/plakaty-pdf-zip (export do PDF)
>
> Snad tam nejsou žádné další chyby, do tisku to jde ráno a doufám, že 
> se to stihne.
>
> *From:*Jiří Holeček [mailto:akrijos na gmail.com]
> *Sent:* Tuesday, September 11, 2012 11:12 PM
> *To:* Martin Borýsek
> *Cc:* fse na fel.cvut.cz
> *Subject:* Re: [FSE] Plakáty do Itálie - beta verze
>
> About The Team
>
> Formula SAE is a student design competition which originated in the 
> U.S. in 1981. Since 1998 the competition known as Formula Student has 
> begun in Europe. The goal of the competitors is to design and develop 
> a formula car. The final evaluation also takes into account the 
> costing and manufacturing technology problems including the carbon 
> dioxide footprint of the whole design. All these parameters has to be 
> considered by the student team playing a role of a fictive company 
> which develops and sells this final product. The car has to be 
> inexpensive, reliable and easily maintanable in order to succeed at 
> the competitive market. The target customer is an unprofessional 
> weekend autocross or sprint racer. The production plan is to meet a 
> demand of 1000 units per year.
>
> The time spent by students on this project is about 35 000 hours every 
> year.
>
> FSE0.1 Prototype
>
> The spatial tubular frame is made from the structural steel. Its 
> welding was performed using MAG method and the final frame was 
> reinforced using honeycomb aluminium panels.
>
> Frame
>
> The first generation car FSE.01 designed by CTU CarTech Electric Team 
> is based on hybrid chassis which are made both from S235 tubular 
> steel and EN AW 6082 aluminium alloy water cut panels. The main space 
> frame is welded using MAG technology and subsequently reinforced using 
> aluminium honeycomb panels glued into the frame. The rear part of the 
> chassis made from the aluminium alloy is welded using TIG technology 
> and bolted to the main space frame. This hybrid chassis, where the 
> aluminium honeycomb panel is used as a main firewall component, 
> provides a very safe cockpit for the driver. For the best driver's 
> protection a 6-point safety belt is used. The car's bonnet is 
> manufactured from the glass fibre composite.
>
> Suspension
>
> Both axles are using independent and adjustable suspension system in 
> order to provide an appropriate dynamic and handling car 
> characteristics. The axles are equipped by a push-rod suspension type. 
> The forces acting on the suspension are transmitted into the custom 
> made shock absorbers via rocker arms. In order to increase and control 
> the axle stiffness anti-roll bars are installed on both axles. The 
> design of the whole chassis was subjected to the FEM analysis in order 
> to ensure the required fatigue life.
>
> Brakes & steering
>
> FSE.01 brake system uses two independent hydraulic circuits equipped 
> with adjustable biasing. The front wheels are provided by disc brakes 
> mounted on the front uprights. Willwood GP320 front brake calipers are 
> coupled with brake discs having an effective diameter of 223.4 mm. The 
> rear disc brakes are mounted to the frame in order to reduce the rear 
> unsprung mass. AP
>
> Racing CP4227 rear brake calipers act on the brake disc equipped with 
> an effective diameter of 194 mm.
>
> Above the driver's legs there is a mechanical steering system which 
> includes RSK Trade cross cart steering rack with the ratio 90 mm 
> displacement of the rack/ 360deg of steering wheel rotation. 
> Steering wheel, which is made from glass fibre composite, includes 
> electronic features showing the required data to the driver.
>
> Battery Pack
>
> We can proudly state that the energy needed for the propulsion of the 
> vehicle is stored an accumulator pack of our design. This battery pack 
> contains Li-Pol accumulator cells with an electrical capacity 40 Ah 
> per each cell. The total number of the cells is 54 and the 
> energy stored in the whole accumulator pack is as high as 8 kWh. The 
> accumulators can be disconnected from the inverter by AIR contactors 
> at any time. Two AIR contactors were used in order to fulfill the FSE 
> rules. These two contactors can operate in case of both high voltage 
> and high current event. All accumulator cells real-time monitored by 
> the battery management system which is also used for the accumulator 
> pack cooling management. The accumulator pack can be always 
> disconnected manually at any circumstances.
>
> Cell Distribution Scheme
>
> The accumulator pack contains six accumulator units (stacks) 
> containing less than 5 MJ energy each. These stacks are connected in 
> series. In every stack there are 9 accumulator cells in total. Each 
> cell is equipped by a temperature sensor providing the increased 
> safety of the whole accumulator pack. The container of every stack is 
> manufactured from a self-extinguishing material in order to ensure 
> desired degree of safety.
>
> Mounting and safety
>
> The accumulator pack frame is a TIG welded aluminium structure. This 
> design provides the required structural rigidity and the desired 
> accumulator cells protection. This frame is mounted to the steel 
> chassis of the car.
>
> The weight of the final accumulator pack is 84 kg. The mounting of the 
> accumulator pack has to withstand forces generated by a 20 
> g deceleration such that the accumulator container does not enter the 
> driver's cockpit area and therefore this loading path is crucial for 
> the safety of the driver. The mounting has to be able to bear a 
> loading generated by a deceleration of 10 g in all other directions.
>
> Tak jsem to udělal až po battery pack. Zabralo mi to něco málo přes 
> hodinu, ten zbytek už dneska do půlnoci nestihnu, tak aspoň máme něco. 
> Možná těch informací tam je pak dál až moc. Musí to taky trochu 
> vypadat tak aby se to lidem chtělo číst, kdyby se to zkrátilo a dalo 
> větší písmo tak si myslim, že by to neuškodilo.
>
>
>
> __________ Informace od ESET Smart Security, verze databaze 7468 
> (20120911) __________
>
> Tuto zpravu proveril ESET Smart Security.
>
> http://www.eset.cz
>
>
> _______________________________________________
> Fse mailing list
> Fse na fel.cvut.cz
> https://list.feld.cvut.cz/cgi-bin/mailman/listinfo/fse
>
>
>
> __________ Informace od ESET Smart Security, verze databaze 7468 (20120911) __________
>
> Tuto zpravu proveril ESET Smart Security.
>
> http://www.eset.cz
>

------------- další část ---------------
HTML příloha byla odstraněna...
URL: <http://list.feld.cvut.cz/pipermail/fse/attachments/20120912/1df593d7/attachment-0003.htm>