Portescap in Motion

Daniel Muller

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Tips to Avoid Stepper Motor Resonance Problems

Posted by Daniel Muller   Feb 04, 2022

Tips to Avoid Stepper Motor Resonance Problems 

When an application requires a reliable, low-cost motor with simple operation, stepper motors can be hard to beat. They can be driven step by step without needing an encoder or Hall sensor for rotor position feedback. However, the same straightforward design and driving method that makes stepper motors popular can lead to resonance problems in certain conditions. 

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Topics: Stepper Motors, Encoders, Portescap, prevent resonance, synchronization, holding torque, friction, braking torque, positioning applications, resonance, avoid resonance, damping, commutation, natural frequency, avoid natural frequency, inertia, microstepping, viscous friction

Improve Thermal Performance for Ironless Brush DC and Brushless DC Motors

Posted by Daniel Muller   Dec 20, 2021

Improve Thermal Performance for Ironless Brush DC and Brushless DC Motors

Electric motor manufacturers must ensure that a motor’s instant internal temperature never exceeds its various components’ maximum allowable temperature. Depending on the design of the motor and the materials used, thermal phenomena will dictate the motor’s performance. Motor designers typically have two options to enhance motor performance without overheating and damaging its components: increase power conversion efficiency by generating less heat for a given mechanical power output or improve the motor's cooling capability through heat dissipation.

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Topics: brushed DC motors, Portescap, Brushless DC motors, DC motors, iron losses, power conversion, heat dissipation, spotless brushless motors, motor design, thermal management, power losses, temperature rise, steady state operation, heat transfer, thermal resistance, excessive temperature, electrical resistance, thermal conductivity, transient operation, peak torque, periodic duty cycle

Dual Motion Can Stack Actuator

Posted by Daniel Muller   Nov 03, 2020

Portescap's Innovative Dual Motion Can Stack Actuator Solution

Rotary and Linear Motion in One Compact Solution

Some applications require rotary motion, such as ventilators. Others require linear motion, such as medical pipettes or syringes. When it comes to combining a rotary and a linear motion in the same application, designers often need to integrate 2 motorized solutions so they can control both degrees of freedom (rotation and linear) at the same time.

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Topics: Stepper Motors

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