Harbin Electric Corporation (China)

Research on Disturbance Control of Electro-Hydraulic Servo Systems Based on Fractional-Order Sliding Mode Control

To improve the disturbance rejection performance of valve-controlled cylinder electro-hydraulic servo systems under external disturbances and load variations, this paper proposes a fractional-order sliding mode control (FOSMC) strategy. A system model with dual-inertia compensati...

Safety evaluation of new energy three-electric systems using enhanced physics-informed neural networks

Accurate safety-state measurement of the three-electric system in new energy vehicles is essential for ensuring reliable and secure operation. This paper proposes an artificial-intelligence-assisted safety measurement framework that integrates a searchable encryption mechanism wi...

Pre-control scheme generation for extreme-weather power imbalance risk using multi-resource frequency regulation and deep reinforcement learning

To address the power imbalance risk between renewable energy output and load demand under extreme weather conditions, this paper proposes a pre-control scheme generation method based on the integration of multiple frequency regulation resources and deep reinforcement learning. Fi...

Influence of operating parameters on blade wear characteristics of helical vane multiphase pump

To address blade wear of helical vane multiphase pumps during sand-containing crude oil transportation in desert oilfields, a self-developed multi-stage pump was studied via numerical simulation (Discrete Phase Model, DPM) and experimental verification. The effects of flow rate,...

Effects of Infusion and Decoction Mashing on Carbohydrate Structure, Fermentation Behavior, and Volatile Compound Profiles in Wheat Beer

Beer flavor depends on the composition and structural characteristics of fermentable carbohydrates generated during mashing. Although mashing strategy is known to influence wort composition, the mechanistic relationship between mashing-induced variations in carbohydrate structure...

Effects of Arbuscular Mycorrhizal Fungi on Rhizosphere Microorganisms and Plant Phenotype of Common Bean

This study aimed to investigate the effects of arbuscular mycorrhizal fungi (AMF) on the growth and development of common bean (Phaseolus vulgaris L.) and on the microbial environment of the rhizosphere soil. Using the common bean inbred line ‘Jinguan’ as the experimental materia...

Preparation and Dielectric Properties of Polyethylene Composites Modified by Nano‐ TiO 2 Coated Zeolites With Different Pore Sizes

ABSTRACT Low‐density polyethylene (LDPE) insulation in high‐voltage direct current (HVDC) cables is prone to space charge accumulation and electric field distortion. To address this, we propose a core–shell modification strategy using nano‐TiO 2 ‐coated porous zeolites (4A and Na...