Search found 7 matches

by gloria
05 May 2017, 07:44
Forum: General questions
Topic: Inverse kinematics of hybrid robot
Replies: 14
Views: 5092

Re: Inverse kinematics of hybrid robot

Yeah,you are right. The ik1 and ik2 failed. But that's not because of the wrong constraints different from ik3. The first and second chains are in the same plane, so it just need two constraints(x and z), while the third chain works in space and it should be constrained in x, y and z. Also, their ba...
by gloria
02 May 2017, 12:57
Forum: General questions
Topic: Inverse kinematics of hybrid robot
Replies: 14
Views: 5092

Re: Inverse kinematics of hybrid robot

OK! Here is my updated scene.
http://pan.baidu.com/s/1bBQgzk

Gloria
by gloria
28 Apr 2017, 17:16
Forum: General questions
Topic: Inverse kinematics of hybrid robot
Replies: 14
Views: 5092

Re: Inverse kinematics of hybrid robot

Hi, coppelia, I took your second advice, and things got right. It seems that thinking about which chain is for the main task and which chain is for closing the loop is really important in dealing with a complex mechanism. But now I am still confused about the ik_result_fail. My IK groups are all per...
by gloria
26 Apr 2017, 11:07
Forum: General questions
Topic: Inverse kinematics of hybrid robot
Replies: 14
Views: 5092

Re: Inverse kinematics of hybrid robot

Hello coppelia, Thanks for your reply! I figure out the reason why my ik fails: the uncorrected kinematic chains and over-constrained tip-target links! And now I think I've made it right and things get better. When I use Pseudo method, the robot tip follows the target well in some area without colla...
by gloria
21 Apr 2017, 15:09
Forum: General questions
Topic: Inverse kinematics of hybrid robot
Replies: 14
Views: 5092

Re: Inverse kinematics of hybrid robot

Hi, Thanks for your reply! I just want to do IK. Now, if I use Pseudo method, by the time simulation begin, the robot collapse, while when I use DLS method, the tip follows the target well. However, value of sim_ikresult_fail is true during the whole simulation. Does it mean ik fails all the time? W...
by gloria
20 Apr 2017, 15:36
Forum: General questions
Topic: Inverse kinematics of hybrid robot
Replies: 14
Views: 5092

Inverse kinematics of hybrid robot

Hello, I'm figuring out a problem of inverse kinematics of a hybrid robot. It has five degrees of freedom, among which three for translation and two for rotation. Also, its topology is hybrid, which means there are both parallel and serial chains, just similar to the robot shown in the user manual-I...
by gloria
23 Feb 2016, 07:37
Forum: General questions
Topic: vrep script calling lua-sdl
Replies: 3
Views: 1850

vrep script calling lua-sdl

Hello! I intend to install sdl2.0 on my win7 system, so that it can implement the joystick and v-Rep software interfaces, and I wonder if it is possible? As far as I know, v-rep scripting language is LUA, and SDL library supports the Lua bindings . LUA-sdl2 source code is available for download. But...