H2W Technologies: Calculating Acceleration for Linear Motion
Linear ActuatorLinear MotorLinear StageX, X-Y, X-Y-Z PositioningLinear MotionX-Y Positioning Stage
Unlocking the Linear Motion Specification Query
Understanding the specifications needed to properly size my motion control application
Every motion control problem begins with a need to move a certain payload over a certain distance. However, there are many types of moves possible, and determining the right motion control solution may require some calculations to match the specifications found on a given motors data sheet. Most sales engineers will ask you for three basic questions when directing you to the proper motor or motion control solution:
- What is the stroke or displacement required?
- What is the force or thrust required?
- At what duty cycle do you plan on operating the motor?
The travel distance is the first piece of information needed to unlock any specification, because a solution to move a few microns would utilize different motion technology from an application requiring several meters of travel. In addition to understanding the total travel required, it would be necessary to determine whether the travel is oscillatory, constant velocity, or the motion profile is defined by a pick-and-place application. Oscillatory systems typically will move back and forth at a specific frequency or range of frequencies. While constant velocity systems either need to operate for a known distance or time at a constant velocity, or they need to get a payload up to a velocity, in these cases the distance and time to accelerate up to the velocity needs to be understood and accounted for in the overall displacement. With this information you can determine the acceleration necessary to make the move. To learn more about calculating acceleration you can read our white paper about calculating acceleration for linear motion.