A new method for the automated measurement of the hysteresis of the temperature-compensated inductance-to-frequency converter with a single quartz crystal is proposed. The new idea behind this method is a converter with two programmable analog switches enabling the automated measurement of the converter hysteresis, as well as the temperature compensation of the quartz crystal and any other circ...

In this article, a novel control method is proposed for feedforward compensation of hysteresis non-linearity in various frequency ranges. By integrating a multirate hysteresis compensator controller with PID feedback control, a combined controller is developed and experimentally validated for a piezoelectric micro-positioning system. Piezoelectric materials show non-linear hysteresis behaviour ...

Hysteresis is more than just an interesting oddity that occurs in materials with a first-order transition. It is a real obstacle on the path from existing laboratory-scale prototypes of magnetic refrigerators towards commercialization of this potentially disruptive cooling technology. Indeed, the reversibility of the magnetocaloric effect, being essential for magnetic heat pumps, strongly depen...

Atomic Force Microscopes (AFMs) are widely used for the investigation of samples at the nanometer scale. The metrological AFM used in this work uses a 3 degrees-of-freedom (DOFs) stage, driven by piezo-stack actuators, for sample manipulation in combination with a fixed cantilever. The piezostack actuators suffer from hysteresis, which acts as a nonlinear disturbance on the system and/or can ch...

The ability to actively control the shape of aerospace structures has led to the implementation of Shape Memory Alloy actuators. These actuators can be used for morphing or shape control by modulating their temperature, which is effectively done by applying a voltage difference across their length. Characterization of this temperaturestrain relationship is currently done using constitutive mode...

Cells progressing through the cell cycle must commit irreversibly to mitosis without slipping back to interphase before properly segregating their chromosomes. A mathematical model of cell-cycle progression in cell-free egg extracts from frog predicts that irreversible transitions into and out of mitosis are driven by hysteresis in the molecular control system. Hysteresis refers to toggle-like ...

In this paper we identify demand shocks that can have a permanent effect on output through hysteresis effects. We call these shocks. They are found to be quantitatively important in the United States, particular when Great Recession is included sample. Recessions driven by lead decline employment and investment, while per worker largely unaffected. find strong evidence transmits rise lon...

Being inherently compliant, the robotic artificial muscles are increasingly popular in applications such as safe human-robot interaction, legged robotics, prostheses and orthoses, and soft robotics. Their full utilization is often challenged by the coupled hysteresis among input, strain, and tension force. Although conventional two-dimensional hysteresis models are available, no prior studies o...

The ability to actively control the shape of aerospace structures has spawned the use of shape memory alloy actuators. These actuators can be used for morphing or shape control by modulating their temperature, which is effectively done by applying a voltage difference across their length. Characterization of this temperature–strain relationship is currently done using constitutive models, which...