Linear motors tend to be indispensable at present. Whether they are utilize in health service or in automation industry. It is certain that companies is always looking for something ’more’ and linear motors have it. Therefore the aim of this paper is to find better solution for introduced task. How to achieve higher precision in LMPM position control? How to adjust optimal controller parameters...

This paper aims the studying, modeling and testing of models of linear motors which use ultrasonic waves to achieve the movement. The studied motors are characterized by the positioning accuracy, small inertia, wide speed control (does not require gears and gearboxes), easy control, high torque per unit weight, miniaturization, simple structure, low noise, decreasing time-speed characteristic. ...

DC motors have been widely used in the electromechanical systems due to its simple structure, ease of implementing variable speed control and low cost. In high accuracy servo control system, high control performance of DC motor is needed. DC motors have traditionally been modelled as IInd order linear system, which ignores the dead nonlinear zone of the motor. Unfortunately, the dead zone cause...

Piezoelectric ultrasonic motors have been known for more than 30 years. In recent years especially, a large number of different designs have been developed, both for rotation and linear drives. This talk will provide a definition of piezoelectric ultrasonic motors and classify their different operating principles. The operation of each type will then be explained, commercially available impleme...

Animal- and human-made motors vary widely in size and shape, are constructed of vastly different materials, use different mechanisms, and produce an enormous range of mass-specific power. Despite these differences, there is remarkable consistency in the maximum net force produced by broad classes of animal- and human-made motors. Motors that use force production to accomplish steady translation...

In this paper, de-coupled discrete-time sliding-mode tracking controllers are designed for an x-y sliding table driven directly by linear motors. The controllers are designed using an integrated reaching law method, based on a simplified model of the current control loop of these motors. To achieve high bandwidth tracking performance, a feedforward controller is added. Although the sliding tabl...

The dynamic cytoskeletal components, biomolecular motors and their associated filaments, can be integrated in vitro with synthetic components to enable nanoscale transport systems. These “molecular shuttles” have generated significant scientific interest over the past decade, resulting in over 200 publications. This review focuses on the contributions involving the use of linear biomolecular mo...

We report a new approach to the design of direct-drive linear permanent magnet motors for use in general-purpose robotic actuation, with particular attention to applications in bird-scale flapping-wing robots. We show a simple, quantitative analytical modeling framework for this class of actuators, and demonstrate inherent scaling properties that allow the production of motors with force densit...