FAULHABER Tutorial Selecting the appropriate linear motor

Selecting the appropriate linear motor To ensure reliable operation and a long service life for your application, it is important to select the linear motor that best suits and ideally fulfills your requirements. This tutorial will help you to determine the parameters that are important when calculating and selecting a linear motor. This will help you find the right linear drive from the FAULHABER portfolio for your project. The FAULHABER tutorial: How to calculate the right linear motor for your application To calculate a linear motor and select the right drive, in addition to the size of the...

Selecting the appropriate linear motor 1. The required speed profile A meaningful speed profile, which maps the various load movements of the axis in the application case, forms the basis for selecting a linear motor. To determine the movement properties required for this profile, you first need to answer the following four questions: 1. What is the maximum speed? How much acceleration is required for the mass? What is the length of movement the mass should perform? How long is the rest time? Using this data, you can calculate the individual speed profile of the linear motor for the concrete...

Selecting the appropriate linear motor Detailed view: Calculation of the speed and acceleration for part ① 2. The required peak and continuous forces The peak force is the highest one achieved during the motion cycle. The continuous force, however, describes the force which a linear motor can and must apply in continuous operation. To ensure that the selected model is suitable both for long-term use and for potential load peaks, it is advisable to additionally calculate the peak and continuous forces beforehand when selecting a linear motor. The peak force is calculated using the following formula:...

Selecting the appropriate linear motor Now that the forces of the three parts of the profile are known, the required peak and continuous forces of the linear motor can be calculated in the next step. With these two values, it is now possible to find the right motor for the concrete application case. This results in the following calculation for selecting a linear motor for our application example: 3. The temperature of the coil winding To ensure the performance capability of the linear motor as well as a long service life of the overall system, a correct coil drive is essential. The temperature...

Selecting the appropriate linear motor Application example: For this example, we assume a force constant kF equal to a continuous force of 6.43 N/A. For calculation of the motor continuous current, this yields the following value: With an electrical resistance of 13.17 as well as a total thermal resistance of 23.2 °C/W (Rth1 + Rth2) and a reduced thermal resistance Rth2 of 55% (0.45 · Rth2), this in turn results in the following coil temperature in rated operation: 4. The practical test Although intensive preparation and precise calculation are indispensable when selecting a linear motor, ultimately...

Selecting the appropriate linear motor Do you have questions about selecting a linear motor? You are in the process of selecting a linear motor and need a data sheet that you can‘t find on our website? Or you have already created a speed profile and calculated all required forces as well as the temperature development of the linear motor, but you are still unsure which of our motors best meets these parameters? No problem: The experts from FAULHABER will gladly advise you in all matters regarding the selection of your linear motor. Simply complete the contact form on our website and our experts...