The presented motor is a linear stepping motor so called Fine Stepping Piezo Actuator (FSPA) able to support large external force without losing its holding position whether powered or unpowered.
FSPA are based on inertial stepper piezo motors. They are composed of four main elements: an actuator, a lever arm, a mass and a clamp. The principle of such motors is simple and relies on stick-slip effect and dissymmetrical accelerations.
Invinity to build 20MWh flow battery in UK
Yuk - batteries are horrible, poisonous, short-lived and unsustainable things. It is about time that we invested in much more compatible mechanical...