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Hilleroed, Denmark— PCBMotor ApS has developed a technology that enables motors to be directly mounted onto a PCB along with the motor controller.
This patented technology can achieve a positioning accuracy of 100,000 steps per revolution using a high resolution sensor. PCBMotor technology can also achieve high resolution if the motor is turned on in micro steps down to 0.1msec width each. The motor's operating frequency is 40 kHz.
Applications include spectrum analysis, laser adjustment, microscopes and turntables.
PCBMotor consists of two parts. The first part is the stator which is milled out of the PCB and holds the actuators and electrical connecting circuit (the PCB can also hold the driver). The second part is the rotor, which is pressed onto the surface of the stator and delivers the mechanical output. A travelling wave is generated over the stator surface, acting as a flexible ring to produce elliptical motion on the rotor interface. The elliptical motion of the contact surface propels the rotor and the connected drive-shaft.
1mm X 1mm ceramic piezo components are mounted on the PCB. Operation depends on friction between the moving rotor and stator as well as amplitude and quality of the wave travelling on the stator. The rotor can turn between 60 and 120 RPM with torque ranging from 1 Nmm to more than 70 Nmm depending on the stator's diameter, number of piezo components and the rotor design and material.
For pricing and a whitepaper on the technology, click here.
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