Feedback control of our limbs must account for the unexpected offset of mechanical perturbations. Here we examine the evoked activity of elbow flexor and extensor muscles to torque pulses lasting 22-152 ms and how torque offset impacts activity in the long-latency (45-100 ms) and voluntary epochs (120-180 ms). For each pulse width, we found a significant attenuation of muscle activity approxima...

High accuracy positioning stages with multiple degrees-of-freedom are ubiquitous in industrial manufacturing. Examples include probing and inspection systems, disk drive head assembly systems, and photolithographic positioning stages (microsteppers) in semiconductor manufacturing. Microsteppers are typically made of a lower-stage that actuates large high-speed movements and an upper-stage that ...

Spacely Sprockets (a pseudonym) specializes in the manufacture of aerospace products. The corporate mission of Spacely Sprockets is simply “client success”, which drives the expectation that every product must work the first time, every time. Spacely Sprockets relies on accurate application of torque when tightening mechanical fasteners during the manufacturing process. Torque is a twisting for...

Abstract. The Switched Reluctance Motor (SRM) Drives have attracted the attention of many researchers in the recent past because of advantages like simple mechanical structure, adaptability to harsh environments like coal mining etc. But it has one main disadvantage of high torque ripple due to its double saliency structure. The Direct Torque Control (DTC) technique can minimize the torque ripp...

The back emf harmonics of a permanent magnet (PM) synchronous motor is a major source of torque ripple. For torque control applications including column fitted MDPS (motor driven power steering) systems, it is essential to reduce the mechanical vibrations due to torque ripples at low speeds. In this paper, a torque ripple reduction algorithm for interior PM synchronous motors is proposed. The h...

Braking in hoisting drives is used to reduce the speed of the load (cargo) or to stop it completely. Braking can be realized using electrical and mechanical means; mechanical brake is used to hold the suspended cargo after disconnecting the driving motor from the supply. In modern hoisting electric drive systems, in addition to mechanical braking, electric braking is also used. Electric braking...

Safety and reliability of electrical actuators are essential for success all electric more aircrafts (MEA). Torque limiters improve the electromechanical (EMA) by restricting amount force experienced actuator drive train components. If transmitted torque in shaft exceeds a limit, it gives way controlled manner. This protects from potential failure jamming. In this paper, different types existin...

In this paper we discuss the potential of emerging spintorque devices for computing applications. Recent proposals for spinbased computing schemes may be differentiated as ‘all-spin’ vs. hybrid, programmable vs. fixed, and, Boolean vs. non-Boolean. Allspin logic-styles may offer high area-density due to small form-factor of nano-magnetic devices. However, circuit and system-level design techniq...

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