Advanced Servo Motors ...
PMW Dynamics provide a comprehensive portfolio of advanced PM servo motors deploying both brush and brushless technology each bringing their specific benefits to an application
Remember your choice is not limited to catalogue items as PMW Dynamics have the capability to design and manufacture custom motors optimised to the exact requirement of your application
Industries Served by PMW Dynamics
A diverse range of industries rely on PMW Dynamics to engineer motor solutions design specifically for their demanding needs. Here's some examples ...
Industry
Industrial ...
Both brushed and brushless PMW motors are used in many industries. Examples include machining centres, semiconductor manufacturing positioning systems, winders and rewinders in the paper industry, vacuum and other environmental chambers and ovens
For test and measurement equipment, they can be found in materials testing machines, coordinate measurement machines, sample preparation and polishing devices and other inspection devices. In the field of precision positioning systems, they are used to drive the pan and tilt mechanisms of radio telescopes, coastal and mobile radar dishes and devices for turning turrets.
Materials Testing Machine Case Study
The motor features a built-in tachometer for precise motor control feedback. The motor can therefore be controlled through a complex cycle of rapid acceleration, deceleration, reverse and repeat, needed in fatigue testing. This type of motor is very suitable for this motion profile, due to the very low moment of inertia of the motor armature
Contact our application team for assistance with your next challenging motor project ...
Turntable for CMM Case Study
The overall height of the motor is sufficiently low to fit in the base plate of the turntable. Secondly, the GN9T motor uses an iron-free armature for zero cogging and no torque ripple under load, so that the motion is extremely smooth, ensuring angular precision of the workpiece
The motor is coupled to a zero-backlash strainwave gearbox, for precision angular motion. As there is a high ratio reduction gearbox between motor and turntable, even the slightest ripple in the torque would be amplified. This is eliminated with the GN9T motor.
Contact our application team for assistance with your next challenging motor project ...
Warehouse Robot Case Study
One of the key components for a new robot developed for a novel warehouse storage and retrieval system was its motor. As no commercially available motor fitted the company’s demanding specifications, PMW was asked to design and develop a compact but powerful model that could move the robots horizontally as well as raise and lower their loads.
The type of motor chosen was a permanent magnet brushless motor with an external rotor. Having its high strength neodymium magnets positioned on the externally running rotor gives it the fundamental advantage that the torque is generated at maximum radius, enabling it to produce high torque smoothly and over a wide range of speeds
Precise individual control of the robots was required, with positional feedback from the robot to the control system
During development, PMW precisely modelled the motor within the customer’s specification constraints, in order to optimise efficiency and unit cost. Electromagnetic modelling of the motor was carried out over a number of iterations, with the thermal studies based on the different duty cycle models and updated after customer reviews
The short axial length of the motor was crucial, since if it was as little as 2 mm longer it would have led to a substantial increase in the overall warehouse area
Contact our application team for assistance with your next challenging motor project ...
Get your custom designed motor
Get in touch