RC India
Welcome Guest, please login or register.
 
Pages: [1]   Go Down
0 Members and 1 Guest are viewing this topic. Topic Tools Topic Tools 
Read
« on: April 05, 2009, 02:20:25 AM »
dipti
Heli Lover
Active Member
**

Reputation Power: 1 
dipti has no influence.
Offline Offline

City: chennai
State: Tamil Nadu
RC Skills: Beginner
Posts: 6
Join Date: Apr, 2009




hiiiiiiiiii guys am a srm engineering student 4rth year mechanical constructing a four rotor helicopter with autonomous hovering.
« Last Edit: April 05, 2009, 02:45:08 AM by anwar » Logged
 

Read
« Reply #1 on: April 05, 2009, 02:25:16 AM »
anwar
Administrator
Forum Hero

*****

Reputation Power: 141 
anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!
Offline Offline

City: Doha (Qatar) & Thrissur
State: Kerala
RC Skills: Advanced
Posts: 11619
Join Date: Mar, 2009

RC India - Flying and racing with open minds !



Hi Dipti, welcome to the forum  Smiley   

We all would love to know how far are you with your project.  What design have you come up with, are you using gyros, and so on and so forth ?!?!?!?
Logged

Hangar : Please see my introduction.
RC India forum and me : About this forum.
 

Read
« Reply #2 on: April 05, 2009, 02:26:55 AM »
dipti
Heli Lover
Active Member
**

Reputation Power: 1 
dipti has no influence.
Offline Offline

City: chennai
State: Tamil Nadu
RC Skills: Beginner
Posts: 6
Join Date: Apr, 2009



four rotor helicopter consists of the following components-
1 ) four outrunner brushless motor.
2 ) carbon fibre tube.
3 ) nylone fibre.
4 ) motor clamp.
5 ) inertial measurement unit(6 dof)
6 ) 30 ESC.
7 ) personal computer.
8 ) parallel port.

« Last Edit: April 05, 2009, 02:33:29 AM by anwar » Logged
 

Read
« Reply #3 on: April 05, 2009, 02:30:34 AM »
dipti
Heli Lover
Active Member
**

Reputation Power: 1 
dipti has no influence.
Offline Offline

City: chennai
State: Tamil Nadu
RC Skills: Beginner
Posts: 6
Join Date: Apr, 2009



sir am using 3axis gyro and 3 axis accelerometre the complete IMU circiut. It helps me to collect the roll , pitch , yaw , roll rate , pitch rate, yaw rate,after that am following the pid closed loop for the autonomous hovering. so am going to put the pics of ma quadrotor as soon as ma propeller attached to the quadrotor.
Logged
 

Read
« Reply #4 on: April 05, 2009, 02:36:53 AM »
anwar
Administrator
Forum Hero

*****

Reputation Power: 141 
anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!
Offline Offline

City: Doha (Qatar) & Thrissur
State: Kerala
RC Skills: Advanced
Posts: 11619
Join Date: Mar, 2009

RC India - Flying and racing with open minds !



When you say "autonomous hovering", do you mean it will just stabilize itself only, OR can it go from point A to B to point C without any human input ?  Does it support storing of trajectory points (like A, B, C mentioned above) which it will visit autonomously once it is airborne ?
Logged

Hangar : Please see my introduction.
RC India forum and me : About this forum.
 

Read
« Reply #5 on: April 05, 2009, 02:41:22 AM »
dipti
Heli Lover
Active Member
**

Reputation Power: 1 
dipti has no influence.
Offline Offline

City: chennai
State: Tamil Nadu
RC Skills: Beginner
Posts: 6
Join Date: Apr, 2009



autonomous means it will stabilize automatically any disturbances is there the craft stabilize itself only
Logged
 

Read
« Reply #6 on: April 08, 2009, 07:15:04 PM »
ashok
Plane Lover
Active Member
**

Reputation Power: 1 
ashok has no influence.
Offline Offline

City: PUNE
State: Maharashtra
RC Skills: Beginner
Posts: 45
Join Date: Mar, 2009



Ithink This will help , this is a system on its own.
paparazzi  http://paparazzi.enac.fr/wiki/Overview
« Last Edit: April 08, 2009, 08:14:07 PM by anwar » Logged
 

Read
« Reply #7 on: April 30, 2009, 02:06:59 PM »
Pikle6
Plane Lover
Forum Hero

*****

Reputation Power: 13 
Pikle6 has no influence.
Offline Offline

City: Navi Mumbai
State: Maharashtra
RC Skills: Beginner
Posts: 1050
Join Date: Apr, 2009

VTOL - Vertical Take Off & Landing



hi dipti didi(or akka) (i am smaller than you)(i am 16 now) what is the material out of which the quad is to built out of. as you are doing engineering fibre glassing is the best also you might also be having CNC facility i believe i have a friend max in the USA actually he's quite older than me i followed his project closely he also is bulding a quadrotor Vtol i like his project might suite you .he is a designing genius. post your model diagram and wiring if you can.
check out his post and let me know if you have any questions i will ask him for you. i like VTOLS if you finsh with you quad someday you can convert it into a vtol to. Best of luck. As you are from chennai ask sai uncle he will help you out .
good luck again

Here's the link http://www.rcgroups.com/forums/showthread.php?t=782929

E.V.Subramanian
Logged

E.V.Subramanian
Yak55|EasyFly Glider 1.9m|Skyfun|Easystar II|Quad Talon V2|Mini Saturn
 

Read
« Reply #8 on: May 01, 2009, 07:59:22 AM »
Pikle6
Plane Lover
Forum Hero

*****

Reputation Power: 13 
Pikle6 has no influence.
Offline Offline

City: Navi Mumbai
State: Maharashtra
RC Skills: Beginner
Posts: 1050
Join Date: Apr, 2009

VTOL - Vertical Take Off & Landing



hi Dipti Didi
i just forgot to ask you that, do the motors sytem have the collective and cyclic ability  or is it like mine that is using servo to tilt the motor for temporary cotrol
Logged

E.V.Subramanian
Yak55|EasyFly Glider 1.9m|Skyfun|Easystar II|Quad Talon V2|Mini Saturn
 

Read
« Reply #9 on: May 09, 2009, 12:16:29 AM »
dipti
Heli Lover
Active Member
**

Reputation Power: 1 
dipti has no influence.
Offline Offline

City: chennai
State: Tamil Nadu
RC Skills: Beginner
Posts: 6
Join Date: Apr, 2009



thank u sir ...........
i alredy biult it
i just flying 4 feet but blance is nt there
so am going to implement closed loop controll system
PID loop
Logged
 

Read
« Reply #10 on: May 17, 2009, 06:02:45 PM »
lucky_sp
Plane Lover
Active Member
**

Reputation Power: 1 
lucky_sp has no influence.
Offline Offline

City: Mumbai
State: Maharashtra
RC Skills: Beginner
Posts: 7
Join Date: May, 2009



       
      Hi Dipti for a multirotor flyer aerial physical balance is always an important issue . So if you can send the model of your quadrotor where the mass distribution or the placement of the various stuffs are indicated  we can hopefully solve your problem .  Cool  Roll Eyes   
« Last Edit: May 18, 2009, 01:31:48 PM by lucky_sp » Logged
 

Read
« Reply #11 on: April 10, 2010, 10:59:12 PM »
ANIL KRISHNA SHAW
Heli Lover
Active Member
**

Reputation Power: 1 
ANIL KRISHNA SHAW has no influence.
Offline Offline

City: KOLKATA
State: West Bengal
RC Skills: Beginner
Posts: 3
Join Date: Dec, 2009



Can anybody plz tell me the basics of 4 rotor helis.

what are the material and the no. of it will i need to make it. i have 4 channel tx, is it enough for it or i have to get another one.
Logged
 

Read
« Reply #12 on: April 11, 2010, 12:15:11 AM »
ankur
Scratch builder and diy'er
Plane Lover
Forum Hero

*****

Reputation Power: 9 
ankur has no influence.
Offline Offline

City: Allahabad
State: Uttar Pradesh
RC Skills: Beginner
Posts: 750
Join Date: Aug, 2009

I am Gr8



Can anybody plz tell me the basics of 4 rotor helis.

what are the material and the no. of it will i need to make it. i have 4 channel tx, is it enough for it or i have to get another one.

if u search the forum there are many thread on this forum they will clear ur doubts..
the basic design is this
http://www.rcindia.org/self-designed-diy-and-college-projects/quad-rotor/
Logged

Ankur Singh,
Aged 14-Studing in Class 10th
 

Read
« Reply #13 on: April 11, 2010, 02:45:04 PM »
neo1896
Plane Lover
Active Member
**

Reputation Power: 1 
neo1896 has no influence.
Offline Offline

City: Bangalore
State: Karnataka
RC Skills: Beginner
Posts: 24
Join Date: Mar, 2010



four rotor helicopter consists of the following components-
1 ) four outrunner brushless motor.
...
The most difficult part of developing efficient self hovering quad is to generate the PWM pulses for the ESC´s because we would need 4 PWM servo outputs with very good precision (1-2us) and at a high rate around 125Hz i guess.
It seems you are using  PC for calculation and interface it via parallel port wireless.The major problem would be the rate at which quad sends data to the pc and at that rate pc wont be able to send the data back due to the limitations of the wireless medium.
I would suggest you better go  for onboard MCU .

And 30amp ESC i think thats way to more.

Rgards
Neo
« Last Edit: April 11, 2010, 03:36:33 PM by anwar » Logged
 

Pages: [1]   Go Up
Jump to:  

Related Topics
Subject Started by Replies Views Last post
Helicopter rotor blades : 450, .50 and .90 size
For Sale
gauravag 8 5977 Last post August 29, 2015, 03:47:56 AM
by Noorani
FOR SALE : Silverlit Space Phoenix - Twin rotor helicopter
For Sale
ebinmoothedam 6 5835 Last post March 20, 2016, 06:04:22 PM
by anantsinghchaudhary
Helicopter lifts helicopter
Chatter Zone
saahil 0 1869 Last post October 31, 2012, 05:02:31 AM
by saahil
Build - Scale 450 helicopter with 4 Blade Rotor Head « 1 2  All »
Helis
raja_mastana 36 20176 Last post April 15, 2013, 11:12:42 AM
by raja_mastana
tail rotor for walkera v 400 d 02 helicopter
Wanted
andy_65_in 1 1284 Last post January 17, 2015, 06:49:07 AM
by andy_65_in