addChangeSpeed

Add change speed mission item

Since R2022b

Syntax

addChangeSpeed(mission,speed)

addChangeSpeed(___,Name=Value)

Description

addChangeSpeed(mission,speed) adds a change speed mission item that changes the reference speed of the UAV in subsequent mission items to speed.

addChangeSpeed(___,Name=Value) sets additional options specified by one or more name-value pair arguments in addition to all input arguments from the previous syntax. For example, addChangeSpeed(mission,speed,InsertAtRow=3) adds a change speed mission item at index 3 of the mission items.

Examples

Create UAV Mission Manually

Create a UAV mission object with a home location at the origin of the local ENU coordinate frame and an initial speed of 5 meters per second.

m = uavMission(Frame="LocalENU",HomeLocation=[0 0 0],Speed=5)

m = 
  uavMission with properties:

       HomeLocation: [0 0 0]
         InitialYaw: 0
              Frame: "LocalENU"
              Speed: 5
    NumMissionItems: 0

Add a takeoff mission item to the mission with an altitude of 25 meters, pitch of 15 degrees, and yaw of 0 degrees.

addTakeoff(m,20,Pitch=15,Yaw=0);

Add two waypoint mission items to the mission. Between the two waypoints, increase the speed of the UAV to 20 meters per second. After the second waypoint, reduce the speed of the UAV back to 5 meters per second.

addWaypoint(m,[10 0 30]);
addChangeSpeed(m,20)
addWaypoint(m,[20 0 40]);
addChangeSpeed(m,5)
addWaypoint(m,[30 0 50])

Add loiter and hover mission items to the mission, specifying for the UAV to loiter and hover around the second waypoint at a radius of 50 meters for 20 seconds each.

addLoiter(m,[40 0 60],10,20);
addHover(m,[50 0 70],10,20);

Add a landing mission item to the mission to land the UAV.

addLand(m,[70 0 0],Yaw=0);

Show the mission item data table.

showdetails(m)

ans=9×17 table
    Idx    Timestamp     MissionType     ParameterName1    ParameterValue1    ParameterName2    ParameterValue2    ParameterName3    ParameterValue3    ParameterName4    ParameterValue4      ParameterName5      ParameterValue5    ParameterName6    ParameterValue6    ParameterName7    ParameterValue7
    ___    _________    _____________    ______________    _______________    ______________    _______________    ______________    _______________    ______________    _______________    __________________    _______________    ______________    _______________    ______________    _______________

     1        NaN       "Takeoff"          "Altitude"            20              "Pitch"               15              "Yaw"                 0             ""                   NaN          ""                          NaN                ""                NaN                ""                NaN      
     2        NaN       "Waypoint"         "X"                   10              "Y"                    0              "Z"                  30             "Yaw"                NaN          "AcceptanceRadius"          NaN                ""                NaN                ""                NaN      
     3        NaN       "ChangeSpeed"      "Speed"               20              ""                   NaN              ""                  NaN             ""                   NaN          ""                          NaN                ""                NaN                ""                NaN      
     4        NaN       "Waypoint"         "X"                   20              "Y"                    0              "Z"                  40             "Yaw"                NaN          "AcceptanceRadius"          NaN                ""                NaN                ""                NaN      
     5        NaN       "ChangeSpeed"      "Speed"                5              ""                   NaN              ""                  NaN             ""                   NaN          ""                          NaN                ""                NaN                ""                NaN      
     6        NaN       "Waypoint"         "X"                   30              "Y"                    0              "Z"                  50             "Yaw"                NaN          "AcceptanceRadius"          NaN                ""                NaN                ""                NaN      
     7        NaN       "Loiter"           "X"                   40              "Y"                    0              "Z"                  60             "Radius"              10          "Duration"                   20                ""                NaN                ""                NaN      
     8        NaN       "Hover"            "X"                   50              "Y"                    0              "Z"                  70             "Radius"              10          "Duration"                   20                ""                NaN                ""                NaN      
     9        NaN       "Land"             "X"                   70              "Y"                    0              "Z"                   0             "Yaw"                  0          ""                          NaN                ""                NaN                ""                NaN      

Remove the hover action at index 7, and then add another waypoint at index 8 after the hover item moves to index 7. Show the mission details table again to see the changes.

removeItem(m,7);
addWaypoint(m,[65 0 70],InsertAtRow=8);
showdetails(m)

ans=9×17 table
    Idx    Timestamp     MissionType     ParameterName1    ParameterValue1    ParameterName2    ParameterValue2    ParameterName3    ParameterValue3    ParameterName4    ParameterValue4      ParameterName5      ParameterValue5    ParameterName6    ParameterValue6    ParameterName7    ParameterValue7
    ___    _________    _____________    ______________    _______________    ______________    _______________    ______________    _______________    ______________    _______________    __________________    _______________    ______________    _______________    ______________    _______________

     1        NaN       "Takeoff"          "Altitude"            20              "Pitch"               15              "Yaw"                 0             ""                   NaN          ""                          NaN                ""                NaN                ""                NaN      
     2        NaN       "Waypoint"         "X"                   10              "Y"                    0              "Z"                  30             "Yaw"                NaN          "AcceptanceRadius"          NaN                ""                NaN                ""                NaN      
     3        NaN       "ChangeSpeed"      "Speed"               20              ""                   NaN              ""                  NaN             ""                   NaN          ""                          NaN                ""                NaN                ""                NaN      
     4        NaN       "Waypoint"         "X"                   20              "Y"                    0              "Z"                  40             "Yaw"                NaN          "AcceptanceRadius"          NaN                ""                NaN                ""                NaN      
     5        NaN       "ChangeSpeed"      "Speed"                5              ""                   NaN              ""                  NaN             ""                   NaN          ""                          NaN                ""                NaN                ""                NaN      
     6        NaN       "Waypoint"         "X"                   30              "Y"                    0              "Z"                  50             "Yaw"                NaN          "AcceptanceRadius"          NaN                ""                NaN                ""                NaN      
     7        NaN       "Hover"            "X"                   50              "Y"                    0              "Z"                  70             "Radius"              10          "Duration"                   20                ""                NaN                ""                NaN      
     8        NaN       "Waypoint"         "X"                   65              "Y"                    0              "Z"                  70             "Yaw"                NaN          "AcceptanceRadius"          NaN                ""                NaN                ""                NaN      
     9        NaN       "Land"             "X"                   70              "Y"                    0              "Z"                   0             "Yaw"                  0          ""                          NaN                ""                NaN                ""                NaN      

Visualize the mission.

show(m);
axis equal

Input Arguments

mission — UAV mission

uavMission object

UAV mission, specified as a uavMission object.

speed — Reference speed of UAV

numeric scalar

Reference speed of the UAV for subsequent mission items, specified as a numeric scalar, in meters per second.

Example: 2

Name-Value Arguments

Specify optional pairs of arguments as Name1=Value1,...,NameN=ValueN, where Name is the argument name and Value is the corresponding value. Name-value arguments must appear after other arguments, but the order of the pairs does not matter.

Example: addChangeSpeed(mission,2,InsertAtRow=3)

Timestamp — Timestamp

numeric scalar

Timestamp of this item, specified as a numeric scalar, in seconds.

If you do not specify the Timestamp argument, addChangeSpeed determines the timestamp automatically based on the reference speed of the uavMission object.

InsertAtRow — Item position in mission order

positive integer

Item position in the mission order, specified as an positive integer.

If you do not specify the Timestamp argument or you specify a value that is greater than the total number of items in the mission, the item is inserted after the last item as the next index value.

Version History

Introduced in R2022b