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281
Flexible manipulator trajectory tracking based on an improved adaptive particle swarm optimization algorithm with fuzzy PD control
Published 2025-02-01“…Additionally, the maximum starting torque of joint 2 was reduced by 57.9 % and 42.1 % in comparison to the same control methods. …”
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282
Effects of balance device training on ankle function and postural control ability in patients with functional ankle instability
Published 2025-08-01“…Results After eight weeks of intervention, the SABD and EABD groups exhibited significant reductions in peroneal muscle reaction time (P < 0.05) and increases in ankle eversion torque (P < 0.05) compared to the control group. The EABD group demonstrated superior outcomes in ankle inversion and eversion torque and postural control compared to SABD groups (P < 0.05). …”
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283
Research on dynamic parameter identification of space hyper-redundant manipulators using iterative WLS-TCS algorithm
Published 2025-06-01“…Compared with the weighted least squares method, the torque residual RMS value is reduced by about 4.85% on average. …”
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284
功率二分支齿轮传动系统两相遗传算法优化设计研究
Published 2014-01-01“…Split-torque gear transmission is widely used in power transmission of shipbuilding and aviation.Studying on its optimal design has a huge significance on further reducing weight and improving load capacity.With considering dual-path split-torque gear transmission as the study object,choosing two-phase genetic algorithm which is based on the theory of punctuated equilibrium as optimization method,and taking minimum volume of gear transmission system as target function,in the premise of ensuring gear non-interference,teeth fitting,strength requirement conditions and so on,a dual-path split-torque gear transmission optimization model is established,and a optimal result is obtained.The result shows that two-phase genetic algorithm has a better optimal capacity,and the gear volume using this message has a 20% drop-off compared with conventional design.…”
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285
Acute fatiguing effects and biomechanical characteristics of a single bout eccentric quasi-isometric resistance exercise of ankle plantar flexors
Published 2025-06-01“…However, executing EQI muscle contraction at 75% MVIC resulted in statistically significantly larger total contraction time, total torque impulse, and range of motion (p < 0.001) compared to EQI at 90% MVIC.DiscussionThese findings suggest that performing EQI contractions at 75% MVIC may be more effective for generating greater mechanical stimulus without inducing significant acute fatigue.…”
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286
Reduction of Current Harmonics in BLDC Motors Using the Proposed Sigmoid Trapezoidal Current Hysteresis Control
Published 2025-06-01“…Specifically, the proposed method reduces torque ripple by 81% compared to traditional Electronic Commutation Control and improves torque ripple by 30% compared to the conventional method.…”
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287
Performance Analysis of Inverter Fed Single Phase Induction Motor Drive
Published 2024-06-01“…By the application of this method, the switching losses are greatly mitigated when compared with high switching frequency of Pulse Width Modulation (PWM) schemes. …”
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288
Effect of Intake Manifold Porting and Polishing and Throttle Body Venturi Diameter Modification on Motorcycle Performance
Published 2024-06-01“…These modifications resulted in a 10.53% increase in torque and a 16.67% increase in power compared to the standard configuration. …”
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289
Multiphase SVPWM Strategy Analysis and Implementation of Seven-Phase Permanent Magnet Synchronous Motor
Published 2020-01-01“…However, with the increase of the phase number of the motor, the current harmonic component increases correspondingly, which leads to the decrease of the control performance compared with the three-phase system. In order to overcome this challenge, implementation method of driving control technology for seven-phase permanent magnet synchronous motor (PMSM) based on SVPWM algorithm is discussed thoroughly in this paper. …”
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290
Rotor Flux Controller for Induction Machines Considering Main Inductance Saturation
Published 2020-09-01“…With appropriate control of the change rate of the magnetic flux, the losses during the full oper-ating cycle with changes in the torque can be significantly reduced compared to the conventional approach. …”
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291
Design and test of gravity self balancing upper limb rehabilitation robots
Published 2025-01-01“…And a rehabilitation robot balance model was designed and a prototype test platform was built to verify the accuracy of the model and the feasibility of the design scheme.ResultsThe results show that compared with the traditional traction rehabilitation cantilever, the balance effect of spring gravity balance scheme is significant, the torque required for balance is reduced by 92%, and the joint driving torque is reduced by 85%.…”
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292
EVALUATING OF THE EFFECTIVE USAGE OF THE REMOVABLE ORTHODONTIC APPLIANCE WITH A MOVABLE RAMP IN THE TREATMENT OF MESIAL OCCLUSION ACCORDING TO THE ANTHROPOMETRICAL RESEARCH IN MIXE...
Published 2018-03-01“…In mixed occlusion all methods are based on the existence of sizes relationships patterns of teeth on the one side and the length of the dental arch and jaws apical base on the other. …”
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293
Research and Optimization on Performance of Magnetorheological Brake in Consideration of Eccentricity Compression
Published 2022-05-01“…The effects of working clearance,eccentricity and eccentric distance on braking torque are analyzed. Based on Sobol method,the global sensitivity analysis of structural parameters of the brake is carried out. …”
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294
Electromyography-Based Human-in-the-Loop Bayesian Optimization to Assist Free Leg Swinging
Published 2025-04-01“…The controller yields muscle activity reductions of 16.1% (<i>p</i> < 0.001) compared to no device, 21.7% (<i>p</i> < 0.001) versus zero torque, and 15.1% (<i>p</i> < 0.001) versus general control. …”
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295
Optimization of fractional PI controller parameters for enhanced induction motor speed control via indirect field-oriented control
Published 2025-01-01“…The absence of significant instantaneous torque control restricts flux and dissociated torque, resulting in subpar dynamic responsiveness. …”
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296
A Novel Filtering Observer: A Cost-Effective Estimation Solution for Industrial PMSM Drives Using in-Motion Control Systems
Published 2025-02-01“…This paper presents a cost-efficient estimation method, the filtering observer (FOBS), which provides a smooth estimation through prior estimation, enhancing the field-oriented control (FOC) performance of motion control systems by estimating the angular rotor position, angular rotor velocity, and disturbance torque of permanent magnet synchronous motors (PMSMs). …”
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297
Isokinetic eccentric vs. concentric training for functional ankle instability: a randomized controlled trial
Published 2025-08-01“…The D/P torque ratio at 180°/s exhibited a very large between-group difference (Cohen’s d = − 2.18, 95% CI [–2.96, − 1.39], p < 0.001), and the E/I torque ratio at 60°/s demonstrated an extremely large effect size (Cohen’s d = − 4.50, 95% CI [–5.67, − 3.34], p < 0.001). …”
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298
Estimation of Magnet Temperature Using Disturbance Observers of Permanent Magnet Synchronous Motor for Driving Single Rotary Compressor Without Lookup Table
Published 2025-01-01“…In this study, magnet temperature can be determined from the voltage equation, with a permissible torque reference modification. By applying the proposed method, speed ripple was reduced by 74.3% compared with pre-compensation levels, and the magnet temperature estimation error was within <inline-formula> <tex-math notation="LaTeX">$5~^{\circ }$ </tex-math></inline-formula>C for a temperature increase from <inline-formula> <tex-math notation="LaTeX">$26~^{\circ }$ </tex-math></inline-formula>C to <inline-formula> <tex-math notation="LaTeX">$76~^{\circ }$ </tex-math></inline-formula>C. …”
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299
基于逆动力学的柔性机械臂力学特性研究
Published 2014-01-01“…In order to study the mechanical property of the flexible manipulator,through using the low vibration manipulator inverse dynamics and time-varying modal expansion method to establish dynamics model of the single-link flexible manipulator,the manipulator self-excited vibration model is introduced to calculate the elastic model,the calculation method of optimal input torque and optimal torque disturbance is proposed,and the dynamic response analysis on different working conditions of joints is carried on,and finally the related model is established based on numerical calculation data to make a numerical validation.The results show that in the process of flexible manipulator modeling includes nonlinear terms,eliminating model linearization error,giving the structure and movement of the manipulator arm when requires,the optimal input torque can be calculated firstly to achieve the openloop control manipulator.By using perturbation model to understand the role of flexible,the convergence and speed of the algorithm are significantly improved compared with ordinary model,the results have good robustness.When rotating joints fixed,manipulator endpoint for harmonic vibration,if the natural frequency of the vibration frequency is close to the manipulator,the disturbance response divergence,and vice versa for the steady state vibration,when the joint moves fixed,manipulator endpoint for uniform rotation,when the speed is less than the critical speed,the disturbance attenuation response or stabilization,otherwise divergent.…”
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300
Efficacy of virtual reality balance training on rehabilitation outcomes following anterior cruciate ligament reconstruction: A systematic review and meta-analysis.
Published 2025-01-01“…Analysis of the results showed that compared with the conventional rehabilitation control group, the VR balance training group significantly improved the International Knee Documentation Committee (IKDC) score (MD = 3.88, 95%CI: 0.95~6.81), Holden grading (MD = 0.42, 95%CI: 0.33~0.51), Extensor peak torque (EPT) (MD = 12.03, 95%CI: 3.28~20.78)and Flexor peak torque (FPT) (MD = 14.57, 95%CI: 9.52~19.63) in postoperative ACLR patients, and significantly reduced knee reaction time (MD = -0.30, 95%CI: -0.35~-0.25), knee angle reproduction difference at 30° (MD = -0.88, 95%CI: -1.16~-0.61), knee angle reproduction difference at 60° (MD = -0.80, 95%CI: -1.09~-0.50), and VAS score (MD = -0.52, 95%CI: -0.65~-0.39).…”
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