DC motors

Dynamics for robotic drives

Dynamics for robotic drives

Dynamics for robotic drives

The drive specialist Maxon is presenting a new BLDC motor in frameless design with matching encoder, which shows its strengths particularly in dynamic applications. At the same time, a new series of ECX flat motors for various robotics applications will be presented. This brings several solutions to the market for design engineers who have to contend with tight spaces.

Innovative motor concepts are needed to meet the growing market demands for dynamics, compactness and power density. With the EC frameless DT, drive specialist Maxon presents a solution that has it all. The DT50 model is the forerunner of a new product family that has been specially developed for dynamic movements. The brushless motor with its frameless concept can be easily integrated into a wide variety of applications by design engineers. Its strengths are particularly evident where speeds can change at lightning speed. For example in collaborative robots or exoskeletons. When installed, the EC frameless DT50 easily achieves a nominal torque of over 500 mNm at a nominal speed of 4000 min-1. And this with a stator outer diameter of only 50 mm. The innovative winding technology enables a very short motor length with a large hollow shaft of 28 mm.

The EC frameless DT50 is completed by the TSX-MAG encoder. This is a new through-shaft encoder that is not installed directly on the motor axis (off-axis). This allows creative freedom in the design. The encoder can generate Hall signals as well as incremental signals, allowing the motor to be commutated in a field-oriented manner. Other versions of the TSX-MAG and additional drive combinations will follow soon.

High-torque external rotor motors

Maxon presents another innovation in the field of BLDC motors: the ECX flat product family. These external rotor motors can be configured online and are optimised for maximum performance - thanks to special winding technology and segmented magnets. The ratio of torque to weight and construction volume is unique and perfectly suited for UAV (unmanned aerial vehicle) and robotics applications. The iron-core motors will be available in diameters of 22 mm, 32 mm and 42 mm, each in a short and a long version, whereby the short versions are only 14 mm, 16 mm and 21 mm long respectively. This makes the BLDC motors perfect for compact drive solutions that require a high torque. In addition, all variants will also be available with integrated encoders or with integrated speed control as a drive system.

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