task Executor

There will be crash in process of travel task executing .I postpone the task executor for some time in the "handle collision" ,however ,the task executor stopped immediately .I would like to ask you all ,how can there be deceleration process instead of immdiate cease with speed of "zero".thank you in advance!

Hi julialiucsn,

If you add a network node and insert "STATE_WAITING" as the second parameter in the TASKTYPE_DELAY the problem may not occur

inserttask(ts,TASKTYPE_DELAY,NULL,NULL,0, STATE_WAITING);

About Tasktype delay in the manual

This task causes the TaskExecuter to go into a given state, and then simply wait for a specified amount of time.

Here is a thread about collision of TE with other TE travelling on a network node
http://www.flexsim.com/community/for...ead.php?t=1541

Hi Sagar,
thank you for the reply ,however ,it still does not work .there is still no deceleration ,instead ,it stopped immediately .

Hi julialiucsn,

Originally Posted by julialiucsn

...how can there be deceleration process instead of immdiate cease with speed of "zero".

Do you use a network? If so, until now there isn't a method to change the behaviour of the taskexecutor on the network, because the events of the travel have been already created. And there doesn't exist an easy method to update these events.
A preempting tasksequence places the taskexecutor away from the network. You can change the maxspeed of the taskexecutor by a preempting tasksequence. But it is still only a workaround in the OnMessage Trigger of the Taskexecutor. The Taskexecutor cannot stand still but he can move very slowly, nearly with no speed.

// OnMessage 
double curspeed = getvarnum(current,"maxspeed");
curspeed=curspeed/2;
if (curspeed > 0.0001) { // the Taskexecutor nearly stands still, maxspeed of zero leads to a system error  
treenode ts = createemptytasksequence(current,1,1);
inserttask(ts,TASKTYPE_SETNODENUM,getvarnode(current,"maxspeed"),NULL,curspeed,0,0,0);// set a new maxspeed
inserttask(ts,TASKTYPE_SENDMESSAGE,current,current,0,0,0,1);// change speed again in 1 second 
dispatchtasksequence(ts);

Or maybe you can change the AGV Types or states of a taskexecutor of the AGV Module while he is traveling on the network and reduce the speed.

Jörg

Hi Jorg, hi everybody,

if it is not possible to said to a Task Executer while it's traveling on a Network to stop in a deceleration mode, what's the use of STATE_DECELERATING ?

In fact when you suggested me in
https://www.flexsim.com/community/fo...tasktype_delay

to use TASKTYPE_DELAY i've thought that using state_decelerating as var2 would have worked, but it wouldn't

The parameter state is used just for the statistic. It hasn't got any functionality at all to the behaviour of an object in the model.
Jörg