Clear PeoplePicker value in List NewForm.aspx

Hi,

In List NewForm.aspx page, i have PeoplePicker control, dropdown and few text fields.

I have to load values in all fields based on dropdown changed event using jquery, i completed this part to load all fields.

When user changed the dropdown value again and again, the peoplepicker control value get append. i tried to clear its value when dropdown changed event but it not works. Here is the code i have used:

$("input[title='Owner']").val("");
       var _PeoplePicker = $("div[title='Owner']");
       var _PeoplePickerTopId = _PeoplePicker.attr('id');
       
       var _PeoplePickerEditer = $("input[title='Owner']");
//$(_PeoplePickerEditer).empty();

       _PeoplePickerEditer.val("test user");
       var _PeoplePickerOject = SPClientPeoplePicker.SPClientPeoplePickerDict[_PeoplePickerTopId];
       _PeoplePickerOject.AddUnresolvedUserFromEditor(true);  

Thanks in advance...