When moving a piano or dancing tango with partner, how should I control my arm muscles to sense their movements and follow guide them smoothly? Here we observe physically connected pairs tracking target the modify muscle coactivation visual acuity partner's performance. They coactivate stiffen when performance is worse relax blurry feedback. Computational modeling shows that this adaptive sensing property cannot be explained by minimization of movement error hypothesis has previously...

Whether working together to move a table or supporting child learning ride bike, physically connected individuals exchange haptic information improve motor performance. However, this improvement occurs at the cost of additional effort for more skilled partner. Here, we hypothesize that an asymmetric connection, consisting stiffer link less partner and compliant partner, could task performance without in collaborative tasks. Through computational modelling, first tested hypothesis on...

Error based motor learning can be driven by both sensory prediction error and reward error. Learning on is termed sensorimotor adaptation, while learning. To investigate the characteristics differences between adaptation learning, we adapted a visuomotor paradigm where subjects performed arm movements presented with either error, signed end-point or binary reward. Before each trial, perturbation indicators in form of visual cues were to inform presence direction perturbation. analyse...

Current robotic haptic object recognition relies on statistical measures derived from movement dependent interaction signals such as force, vibration or position. Mechanical properties, which can be estimated these signals, are intrinsic properties that may yield a more robust representation. Therefore, this paper proposes an framework using multiple representative mechanical properties: stiffness, viscosity and friction coefficient well the of restitution, has been rarely used to recognise...

Vibrational control strategies have been proposed to achieve a better performance by using high frequency dithers. A well-known example is stabilize an inverted pendulum in open-loop form. Although many different types of vibrational algorithms proposed, not much work has done show their robustness with respect disturbances/uncertainties. By tools developed recently: weak average and strong average, it possible analyse the system. This paper focuses on class linear-time-invariant (LTI)...

Vibrational control seeks to stabilize an unstable system by judiciously injecting a state-free high-frequency dither. This article presents some robustness properties of vibrational with respect additive disturbances in nonlinear system. We assume that, without disturbances, the appropriately averaged is regionally asymptotically stable. Using perturbation techniques, our first result shows that stabilization realized through robust sufficiently small amplitude. Indeed, perturbed has...

This study investigates the role of haptic feedback in a car-following scenario, where information about motion front vehicle is provided through virtual elastic connection with it. Using robotic interface simulated driving environment, we examined impact varying levels such on driver's ability to follow road while avoiding obstacles. The results an experiment 15 subjects indicate that from car's can significantly improve control (i.e., reduce jerk and deviation road) mental load (evaluated...

Humans activate muscles to shape the mechanical interaction with their environment, but can they harness this control mechanism best sense environment? We investigated how participants adapt muscle activation visual and haptic information when tracking a randomly moving target robotic interface. The results exhibit differentiated effect of these sensory modalities, where participants' cocontraction increases noise decreases noise, in apparent contradiction previous results. These be...

Rationale: Whether working together to move a table or supporting child learning ride bike, physically connected individuals use the exchange of haptic information improve motor performance. However, this improvement occurs at cost additional effort for more skilled partner. Objective: Here, we aim assess whether an asym-metric connection, consisting stiffer link less partner, could increase performance without in collaborative tasks. Methods: Through computational modelling, first evaluated...

By analyzing the characteristic of each link and stage in smart gird, grid maturity model has been established. This involves 8 dimensions, 5 hierarchies 50 assessments, is accompanied by whole innovation process cover link: generation, transmission, substation, distribution, consumption, dispatch communication information. Based on this model, one method multi-objective planning proposed. Through assessing dimension's gray target decision distinction between dimension ascertained, thus...

This paper focuses on showing non-local vibrational stabilization of a general class nonlinear control systems. Instead using the linearization averaged system to conclude local stability, new concept semi-global practical stability is proposed. Our main result shows that if uniformly globally asymptotically stable, semi-globally practically vibrationally stable. The desired domain attraction and ultimate bound can be achieved by tuning parameter ε. Furthermore, this definition makes it...

Vibrational control algorithms have been shown their potential in achieving stability and improving the performance of engineering systems by injecting high-frequency dither signals. This paper presents robustness analysis nonlinear vibrational while disturbances exist. The linearization matrix averaged system is assumed to be Hurwitz such that vibrationally stabilizable without disturbances. In presence disturbances, domain attraction can estimated constructing a quadratic Lyapunov...

This paper introduces a design of comprehensive motor protector based on improved sliding-window iterative discrete fourier transform (DFT) algorithm. It improves the conventional DFT, making it easier in calculation and reducing computation burden microprocessor. With electric parameters updating every sampling period, time response to faults is much improved, compared protector. For hardware plan, controlled by two microcontrollers, one for control measurement module other display module....

In order to improve the robustness of control for Permanent Magnet Synchronous Generator (PMSG), optimal linear quadratic regulator technique is adopted both current and voltage controllers in this paper. Furthermore, an integral action added cancel steady-state error. Control principles are analyzed controller design given details. Simulation results reveal that can track perfectly reference even presence disturbances, did its job.

Abstract The rapid development of science and technology has brought a strong impact on people’s traditional habits, among which there is no lack subversive impact. Even in language communication, the progress computer been involved achieved place. Although computer-aided translation software cannot replace translators to complete work independently, it plays an important role work. It not only greatly simplifies translators, lightens burden for improves their efficiency, but also helps make...