Search found 6763 matches

by coppelia
10 Oct 2018, 08:08
Forum: General questions
Topic: How to get friction?
Replies: 1
Views: 30

Re: How to get friction?

Hello,

you should be able to do this by using sim.getContactInfo. But in that case, do not use the Bullet engine, since it will only give you the force normal to the contact surface.

Have also a look at the model Models/other/contact display.ttm

Cheers
by coppelia
10 Oct 2018, 08:00
Forum: General questions
Topic: question about vrep
Replies: 1
Views: 24

Re: question about vrep

Hello, at simulation start, it can be that some calculation structures need to be first calculated. This is most of the time the reason for a short freeze at simulation start. But the second time you run the same simulation, that freeze should not occure anymore, since the calculation structures (e....
by coppelia
10 Oct 2018, 07:27
Forum: General questions
Topic: Rotating sensor on robot
Replies: 2
Views: 37

Re: Rotating sensor on robot

Hello,

for a sensor, you would typically not want to dynamically simulate it. So the rotating elements would be non-respondable and static shapes. The joint should be in passive mode. Then you can modify the angular position of your joint with sim.setJointPosition.

Cheers
by coppelia
10 Oct 2018, 07:21
Forum: General questions
Topic: simulation slows down with multiple robots
Replies: 1
Views: 56

Re: simulation slows down with multiple robots

Hello, this really depends on what functionality you are using. The Baxter model has 3 vision sensors. If all 3 are active, then this can generate a significant slow down. Same for some proximity sensors. Make sure to identify the source for your slow down by looking at the calculation times for eac...
by coppelia
10 Oct 2018, 07:18
Forum: General questions
Topic: Inverse Kinematic with Sawyer
Replies: 1
Views: 60

Re: Inverse Kinematic with Sawyer

Hello, you can have many things that go wrong. Typically: your adjacent robot links are colliding with each other your robot links have a bad mass and/or inertia. The Vortex engine handles these problems much better, try with Vortex to see if that might be the reason your joint position controller h...
by coppelia
10 Oct 2018, 07:13
Forum: General questions
Topic: How do I programmatically check if compound shape is convex?
Replies: 3
Views: 76

Re: How do I programmatically check if compound shape is convex?

Hello,

you can use sim.getObjectInt32Parameter with sim.shapeintparam_convex or sim.shapeintparam_compound.

Cheers
by coppelia
04 Oct 2018, 13:16
Forum: General questions
Topic: simxGetObjectOrientation() Gamma Angle
Replies: 2
Views: 79

Re: simxGetObjectOrientation() Gamma Angle

Hello,

have a look here.

Cheers
by coppelia
04 Oct 2018, 13:15
Forum: General questions
Topic: Synchronous mode with remote API Python
Replies: 1
Views: 82

Re: Synchronous mode with remote API Python

Hello,

you can't simply feed forward the recorded torques, since you will always eventually come out of a stable situation. Why don't you use a simple position controller for all of your joints?

Cheers
by coppelia
04 Oct 2018, 13:12
Forum: General questions
Topic: Are proximity sensors actually line of sight?
Replies: 3
Views: 96

Re: Are proximity sensors actually line of sight?

If you check your proximity sensor with sim.checkProximitySensor(thisSensor,thatDummy), then it will just trying to detect that dummy. Try with sim.checkProximitySensor(thisSensor,sim.handle_all).

Cheers
by coppelia
01 Oct 2018, 07:48
Forum: General questions
Topic: Are proximity sensors actually line of sight?
Replies: 3
Views: 96

Re: Are proximity sensors actually line of sight?

Hello, proximity sensors are not vision sensors and do not share properties of vision sensors, such as line of sight or occlusion. So if you need to verify whether an object is visible of not, use a vision sensor instead. A vision sensor will however be much slower. An alternative would be to have t...