Bug report

Required Info:

• Operating System:
  • Ubuntu 18.04
• Installation type:
  • binaries
• Version or commit hash:
  • master: aaa8c2e
• DDS implementation:
  • OpenSplice
• Client library (if applicable):

Steps to reproduce issue

1. Start robot driver
2. ros2 launch nav2_bringup nav2_bringup_launch.py ...

Expected behavior

The moving speed of robot adjusts with parameter adjustment.

Actual behavior

The robot moves at a slower speed and the line speed is about 0.4m/s.

Additional information

I adjust the max_vel_ params of dwb_controller, but the running speed of robot is still slow.
dwb_controller:
ros__parameters:
use_sim_time: True
debug_trajectory_details: True
min_vel_x: 0.0
min_vel_y: 0.0
max_vel_x: 0.9
max_vel_y: 0.0
max_vel_theta: 1.0
min_speed_xy: 0.0
max_speed_xy: 0.9
min_speed_theta: 0.0

Feature request

Feature description

Implementation considerations