Search found 14 matches

by Ruocheng
Wed Apr 28, 2021 6:06 am
Forum: Technology
Topic: Some small questions about "Mellinger " controller
Replies: 2
Views: 352

Re: Some small questions about "Mellinger " controller

Hi
Thanks for your reply! I'll do it!
by Ruocheng
Mon Apr 26, 2021 2:15 am
Forum: Technology
Topic: Some small questions about "Mellinger " controller
Replies: 2
Views: 352

Some small questions about "Mellinger " controller

Hi! Recently I'm using Mellinger controller in crazyflie_ros. I published the cmd_fullstate(position, velocity, acceleration) and make the crazyflie tracking the given trajectory. The result is excellent, but I still have some problems.. (1) what if I don't publish the fullstate when using Mellinger...
by Ruocheng
Fri Jan 15, 2021 2:00 pm
Forum: Bitcraze
Topic: Trajectory for crazyflie
Replies: 3
Views: 587

Re: Trajectory for crazyflie

Hi professor Hoenig: Thanks for your reply! I will have a try tomorrow!! I have already wrote a minimum snap ros node to generate a trajectory, which outputs position, velocity and acceleration. Can I integrate it with cf? And what should I pub to the crazyflie_server? cmd_fullstate or something els...
by Ruocheng
Fri Jan 15, 2021 3:30 am
Forum: Bitcraze
Topic: Trajectory for crazyflie
Replies: 3
Views: 587

Trajectory for crazyflie

Hi, recently I'm trying to fly trajectories in crazyflie_ros, but there are some issues ... (1)In the crazyflie-firmware/src/modules/src, I found the controller_mellinger.c, but when I use this controller, the cf flies very aggressive and crashed.This problem will disappear when using the PID contro...
by Ruocheng
Thu Jan 14, 2021 8:40 am
Forum: Bitcraze
Topic: error:[crazyflie_server-1] process has died [pid 20730, exit code -6
Replies: 6
Views: 988

Re: error:[crazyflie_server-1] process has died [pid 20730, exit code -6

Thanks a lot! I have solved this problem.
I'm trying flying trajectory now!
by Ruocheng
Wed Jan 13, 2021 3:05 am
Forum: Bitcraze
Topic: error:[crazyflie_server-1] process has died [pid 20730, exit code -6
Replies: 6
Views: 988

Re: error:[crazyflie_server-1] process has died [pid 20730, exit code -6

Hi professor hoenig: I have solved this problem just now!! As you say, I have changed the config.mk PLATFORM=CF2 DEBUG=1 I have added this two lines in this flie and when I execute "make" there are many "warnings" in the cmd window... Then I change the DEBUG=0 and remake the firmware and there are n...
by Ruocheng
Tue Jan 12, 2021 7:27 am
Forum: Bitcraze
Topic: error:[crazyflie_server-1] process has died [pid 20730, exit code -6
Replies: 6
Views: 988

Re: error:[crazyflie_server-1] process has died [pid 20730, exit code -6

Hi professor hoenig: I have tried this method just now, but it is no use....I can only solve this problem by using the official release of the cf firmware, but this can not support cf flying without flow deck. I notice one thing that when using the official release the ESTIMATOR is "complementary". ...
by Ruocheng
Mon Jan 11, 2021 9:50 am
Forum: Technology
Topic: How can I fly CF2 using the motion capture system while without the flow deck
Replies: 2
Views: 2017

Re: How can I fly CF2 using the motion capture system while without the flow deck

I have solved this problem by changing the estimator as "kalman" ## These are set by the platform (see tools/make/platforms/*.mk), can be overwritten here #ESTIMATOR ?= any ESTIMATOR = kalman CONTROLLER ?= Any # one of Any, PID, Mellinger, INDI #CONTROLLER = Mellinger POWER_DISTRIBUTION ?= stock How...
by Ruocheng
Mon Jan 11, 2021 9:12 am
Forum: Bitcraze
Topic: error:[crazyflie_server-1] process has died [pid 20730, exit code -6
Replies: 6
Views: 988

error:[crazyflie_server-1] process has died [pid 20730, exit code -6

Hi,recently I'm trying crazyflie_ros. I use the command roslaunch crazyflie_demo hover_single.launch and an error occurs:| [crazyflie_server-1] process has died [pid 20730, exit code -6, cmd /home/liruocheng/catkin_ws/devel/lib/crazyflie_driver/crazyflie_server __name:=crazyflie_server __log:=/home/...
by Ruocheng
Fri Jan 08, 2021 12:41 pm
Forum: AI-deck
Topic: Always mentioned "connecting" when using viewer.py
Replies: 5
Views: 1311

Re: Always mentioned "connecting" when using viewer.py

Thanks a lot!! I solved this problem!