This website uses cookies primarily for visitor analytics. Certain pages will ask you to fill in contact details to receive additional information. On these pages you have the option of having the site log your details for future visits. Indicating you want the site to remember your details will place a cookie on your device. To view our full cookie policy, please click here. You can also view it at any time by going to our Contact Us page.

Sensors put the smart into safer materials handling

03 October 2018

The Industry 4.0 revolution is enabling a new generation of Automated Guided Vehicles (AGVs) for use in the first wave of smart manufacturing and distribution facilities.

It is also requiring new ways of thinking across all aspects of materials handling, especially when it comes to reducing accidents in the workplace. This in turn, is presenting a new challenge to sensing and control manufacturers to ‘design-in’ safety.

Sensors and encoders feature throughout an AGV design, one of the most important being to control steering. Essentially there are three different types:

1. The three-wheel steering control configuration is the most common solution for lift truck AGVs. They are relatively easy to implement and provide very accurate control. Frequently, this design relies on encoders to monitor and measure the speed and direction of one master wheel that determines the vehicle’s movement. 

2. The differential configuration is a popular solution for unit load carrier and tow-vehicle AGVs since it is possible to rotate around the centre of the vehicle, although with some turning limitations. The steering control is achieved using different speeds in either forwards or backwards directions on the two controlled wheels, where a single motor and an encoder are used on each wheel. 

3. A quad wheel configuration provides the most manoeuvrability as it permits 360° of movement in any direction, making it the ideal solution for unit load carriers. The ability to steer the vehicle in a sideways or crabbing motion allows for better and more accurate navigation in tighter and more challenging spaces. As there are more wheels that require steering controls and accompanying motion control components such as encoders and sensors, this type of configuration is the most complex. 

Read the full article in the October issue of DPA

Contact Details and Archive...

Print this page | E-mail this page