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Jianxin Sun

Last seen: Today Active since 2020

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Answered
i am planning a rrt path using fixed wing uav state space, i want a smooth path can anyone tell what values of parameters to tweek?
The kinematic model used by Dubins path determines the turn radius using following equation based on coordinated flight conditio...

ungefär 2 månader ago | 0

Answered
I am getting a 3d path using rrt in Se3 statespace ,i ant to smoothen this path how can i do this?
https://www.mathworks.com/help/uav/ug/motion-planning-with-rrt-for-fixed-wing-uav.html may help you.

ungefär 2 månader ago | 0

Answered
uav package delivery example: question about stateflow chart "Guidance mode selector"
Hi Sander, The Pose(3) is the z value of the UAV pose in NED frame, meaning that Pose(3) is -altitude. The condition Pose(3) >=...

4 månader ago | 0

Answered
Is it possible to add occupaied property to mesh in an uavScenario object?
Hi Massimo, The uavScenario currently doesn't support conversion to binary occupancy map. Thus the IsBinaryOccupied input is no...

4 månader ago | 0

Answered
I want to custom my statespace like the example"Motion Planning with RRT for Fixed-Wing UAV",but the following error occurs"Abstract classes cannot be instantiated."
Hi Wenjun, The error you received is about missing implmenetation in your state space class. In this example, the UAV state s...

4 månader ago | 0

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Answered
How can replace default controller parts of PX4 with custom algorithms controller?
Hi SeungWoo, You can use the support package to replace the PX4 controller only. Please refer to the "integration with general ...

5 månader ago | 0

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Answered
HITL example of 'UAV Toolbox Support Package for PX4 Autopilots' is disabled
Hi SeungWoo, Have you ran the openExample('px4/FollowSetOfWaypointsQGCHITLSimulationExample') first in the command line? It w...

5 månader ago | 0

Answered
Using Point Cloud from a Lidar Bloc
Hi Gaetan, For your first question, Simulation 3D Lidar block returns two types of information. By default it outputs the point...

5 månader ago | 0

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Answered
How to modify mission in QGC while avoiding obstacles in a photorealistic simulation environment
Hi Robert, Currently the guidance logic in this example is set to track the 2nd waypoint user specified in the mission when per...

5 månader ago | 0

Answered
How to use 6DOF Plant Model while flying obstacle avoidance in a photorealistic simulation environment?
Hi Robert, After you used the "add high fidelity plant" short cut, you can use the following parameters: useQGC = 1 % takes mi...

5 månader ago | 0

Answered
How to modify dubins statespace for 3d Maps?
Hi, The following example https://www.mathworks.com/help/uav/ug/motion-planning-with-rrt-for-fixed-wing-uav.html might help you...

7 månader ago | 1

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Answered
control the Gimbal orientation
Hi, Ulrich, You can use "Simulation 3D Camera" block to achieve this effect. https://www.mathworks.com/help/uav/ref/simulation3...

9 månader ago | 0

Answered
Unable to load .ulg when using Flight Log Analyzer from UAV toolbox
Thank you for bringing this issue to our attention. Our development team is closely reviewing this issue and considering solutio...

11 månader ago | 2

Answered
Control UAV in Gazebo With Simulink
Set motor joint velocity will rotate the rotors but that will not generate lift since Gazebo is not simulating aerodynamices. Yo...

ungefär ett år ago | 1

Answered
Is there a way to create a Dubins path given a set of waypoints?
The connect method of uavDubinsConnection can accept pairs of start and goal poses. Assume your waypoints are defined as a Nx4 m...

ungefär ett år ago | 0

Answered
Mathematical Model used in UAV toolbox
Math behind UAV Guidance Models: multirotor fixedwing

ungefär ett år ago | 1

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Answered
Modify Simulation 3D UAV Vehicle block
Hi Victoria, Thank you for your interest in this feature. This is something our development team is aware of and is considering...

ungefär ett år ago | 0

Answered
What is Lookahead Distance?
Hi Shubham, The lookahead distance determines how far ahead the target location would be for the UAV along the path defined by ...

ungefär ett år ago | 0

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Answered
Get an error when changing the baseMission waypoint in "Example:UAV Package Delivery"
Hi Wenhan, Can you clarify how you changed the waypoints in "noQGC/baseMission" block? You should be able to update the waypoin...

ungefär ett år ago | 1

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Answered
Is it possible to simulate State Space model using live inputs coming from Gazebo environment?
Hi, Have you considered using https://www.mathworks.com/help/simulink/slref/statespace.html from Simulink? Thanks, Jianxin

ungefär ett år ago | 0

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Answered
How to change waypoints while running the simulation model when using UAV toolbox(Path Manager)?
Hi Shichen, Mission data is loaded in "uavPackageDelivery/Ground Control Station/Get Flight Mission/noQGC" subsystem when model...

ungefär ett år ago | 1

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Answered
Usage of INS, GPS sensors and trajectories in 3D Unreal Engine Scenario (UAV Toolbox)
Hi Felix, For GPS sensor in Simulink, currently there is no out of box blocks for it. But you can create a MATLAB function bloc...

ungefär ett år ago | 0

Answered
UAV Toolbox Guidance Model block has mask callback that modifies model at compile time, which prohibits multi-instance model reference
Hi Zhang, Thanks for bringing up this issue. You can try a few workarounds: You can change the model reference block's simulat...

mer än ett år ago | 0

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Answered
Feature Request: UAV Animation block, https://www.mathworks.com/help/uav/ref/uavanimation.html
Hi Yingao, Thank you for your interest in this feature. This is something our development team is aware of and is considering. ...

mer än ett år ago | 0

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Answered
Customize Simulation 3D UAV Vehicle
Hi Benjamin, Thank you for your interest in this UAV Vehicle customization feature. This is something our development team is a...

mer än ett år ago | 0

Answered
How does the uavWaypointFollower object work?
Hi Shubham, Please check the reference page in https://www.mathworks.com/help/uav/ref/uavwaypointfollower-system-object.html [...

mer än ett år ago | 0

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Answered
How to obtain acceleration and angular velocity control inputs to track a fixed-wing UAV trajectory?
Hi Shubham, You can check the exampleHelperUAVDerivatives.m file in the example you referred to. This file should be in the sam...

mer än ett år ago | 0

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Answered
Custom Flight Log - change datatype
Hi Antoine, Is your data X == 0.0083 seconds or 0.0083 milliseconds? If it is the former, you can use timeAccess = @(x)second...

mer än ett år ago | 0

Answered
Flying Multiple UAVs using MATLAB's Unreal Engine Simulation Evironment
You can add and move multiple UAVs in Unreal Engine simulation by inserting multiple Simulation 3D UAV Vehicle blocks.

mer än ett år ago | 1

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Answered
How to get offline installation package of robotics system toolbox uav library?
Hi Zhong, This kind of installation questions can be best handled by Installation Technical Support. https://www.mathworks.com...

mer än ett år ago | 0

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