Use of robots for domestic as well as commercial purposes is growing rapidly. As the cost of robots goes down and their versatility increases, a lot more of tasks and chores would be performed by robots. Precise and accurate navigational assistance is absolutely essential for robots to function properly and carry out their ordered tasks. This calls for a navigation solution which is accurate, give fast data and is cost effective. Using GPS for navigational assistance is not possible always as robots may operate indoors, GPS signals could either be not available or inhibited. Also, in order to control movements of the robot and make it travel along a designated path, the motors need data at a higher rate than is provided by a GPS.
Along with the above-mentioned limitations, in the indoor spaces, GPS provides fairly accurate two-dimensional navigation assistance which is not adequate for certain applications like robots working in a multistoried building. On the other hand, using sophisticated RLG or FOG based Inertial Navigation Systems is not commercially viable due to the high costs of the sensors.
Numerous experiments and research conducted over the years hint that a combination of solid-state MEMS inertial navigation system with GPS or Odometer / Encoder aiding effectively solves all of the above-mentioned problems. A MEMS inertial navigation system with a magnetometer, odometer input, and integrated GPS is affordable and provides a precise and accurate output. Since it is a hybrid system, it can function properly in the circumstances where the GPS signal is a week.
In summary, if compared with all other navigation options, MEMS INS-GPS System have the following advantages:
Robot density rises with increased automation worldwide. You can visit Robots & Automation to get more information about the topic.
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27 Oct, 2017
