I am trying to analyze the velocity for each joint for a given time frame, how can i record the joint velocities for a particular time? [closed]

asked 2015-07-25 19:58:35 -0500

wall_e gravatar image

updated 2015-07-28 08:42:38 -0500

I see the Joint states, but how do you run it on terminal?

/robot/joint_states (sensor_msgs/JointState)

name[i]: '<component_id>' of i-th joint in message value arrays.
position[i]: position of joint i rad
velocity[i]: velocity of joint i in rad/s
effort[i]: effort applied in joint i in Nm
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Closed for the following reason question is not relevant or outdated by tfoote
close date 2016-09-14 14:42:08.905200


I need a bit more info to help you. Are you asking how to access the message data from rostopic echo /robot/joint_states , are you using rosbag record /robot/joint_states, or are you writing a python script to record them?

imcmahon gravatar image imcmahon  ( 2015-07-26 13:03:39 -0500 )edit

I want to record the joint velocities for each joint in the baxter arm when I teach the arm a motion. I was able to acquire the joint angles for each joint by using the joint position record example. I am new to Baxter and I dont know how to obtain the velocity. Can you please help me?

wall_e gravatar image wall_e  ( 2015-07-27 09:47:32 -0500 )edit