A5045037007- Electric Motor Design and Analysis
- Magnetic Bearings and Levitation Dynamics
- Magnetic Properties and Applications
- Sensorless Control of Electric Motors
- Electric Power Systems and Control
- Non-Destructive Testing Techniques
- Piezoelectric Actuators and Control
- Soft Robotics and Applications
- Robot Manipulation and Learning
- Hydraulic and Pneumatic Systems
- Adaptive Dynamic Programming Control
- Manufacturing Process and Optimization
- Inertial Sensor and Navigation
- Advanced Sensor and Energy Harvesting Materials
- Advanced Technologies in Various Fields
- Vibration and Dynamic Analysis
- Engineering Diagnostics and Reliability
- Metallurgy and Material Forming
- Welding Techniques and Residual Stresses
- Tactile and Sensory Interactions
- Multilevel Inverters and Converters
- Iterative Learning Control Systems
- Spacecraft Dynamics and Control
- Cavitation Phenomena in Pumps
- Geophysics and Gravity Measurements
Beihang University
2021-2025
Most industrial applications concern output torque, rotor mass, and utilization of rare Earth permanent-magnet (PM) material electrical machines. Generally, it is challenging to improve these aspects simultaneously. The objective this article propose a novel concentrated-flux-type PM machine with irregular magnets iron poles (CPMIP). configuration has following advantages. First, the employment quasitrapezoid opposite magnetization direction large cross-section helps enhance flux-focusing...
Abstract Permanent-magnet (PM) machines are the important driving components of various mechanical equipment and industrial applications, such as robot joints, aerospace equipment, electric vehicles, actuators, wind generators traction systems. The PM usually expected to have high torque/power density, low torque ripple, reduced rotor mass, a large constant power speed range or strong anti-magnetization capability match different requirements applications. structural topology machines,...
This article presents a novel radial-flux surface-mounted PM (SPM) machine with quasi-cylindrical pole pattern (QCPP). With the proposed configuration, cogging torque and ripple of machines could be greatly decreased due to adoption large eccentric distance reduction high-order airgap flux density harmonics. Moreover, increase fundamental component helps improve generation well. Additionally, magnet poles are semi-embedded into rotor, thus sleeve in conventional SPM is no longer necessary,...
Traditional consequent pole motor has the advantages of less magnetic costs, small resistance and strong inductance. It is widely studied in design electrical propulsion system. However, it problem uneven distribution air gap flux density. locally distributed by square waves, causing high-level harmonic problem, increasing torque pulse vortex loss motor. This paper show principles center-offset arc pole. And limited element simulation different eccentric spacing. The results that compared...
An electromagnetic linear machine is an energy conversion device that can convert electrical into motion. Conventional study of machines mainly focuses on the axial thrust, because it be used to act external payloads directly. However, due manufacturing error and mechanical deformation mover, double side permanent magnet synchronous (DPMLSM) often generates unbalanced normal force mover. This unwanted may aggravate mover lead unequal airgap, which increases further, consequently leading...
Aiming at the high accuracy and robustness position control of servo pump in pitch system a wind turbine generator, this paper proposes an active disturbance rejection controller (ADRC). The ADRC considers angular velocity acceleration limits. According to kinematics principle pump-controlled system, relationship between limit displacement hydraulic cylinder is established. Through method theoretical analysis, nonlinear expression angle obtained, linearization realized; formula for b0 (the...
Conventionally, the designers of electrical machines assume employment regular shaped magnets, such as rectangular, sector, or tiled-shapes. The geometry magnet poles is fixed, and design purpose mainly to optimize dimensional values. However, these shapes employed may not be best choice, unavoidably limiting final result, compromising output performance machines. An alternative scheme conduct topology optimization for rotor poles. By this method, geometrical shape magnets along with iron...
The bidirectional impeller pump is a kind of double driven by single motor, which can and drain water with pump. This design effectively overcomes the disadvantages complicated pipeline arrangement poor reliability caused multi-pump operation. In this paper, designed, realize two-way flow fluid through special channel topology, structure electromagnetic core drive component permanent magnet brushless DC motor are carried out. magnetic field numerical model established Maxwell, distribution...
This paper focuses on the application of low-speed direct drive servo. A surface mount PMSM control method based deadbeat predictive (DPC) and high-frequency injection (HFI) sensorless is proposed. DPC used to replace PI controller in FOC achieve better dynamic performance, d-axis cosine position detection introduced perform mounted PMSM. simulation carried out verify performance proposed method. The results show that has smaller speed tracking error stability than traditional controller. It...
For interaction operations by manipulator such as assembly and grinding, admittance control is a commonly used compliance strategy. Before the actual operation, simulation need to analyse effect adjust parameters, so model should be close system. However, influence of period sampling in system not considered most simulation. Aiming at this problem, paper, firstly mathematical discrete established accounting for an Then, based on constructed Simulink evaluate performance manipulator. Finally,...
This paper proposes a novel multi-DOF spherical actuator based on transverse flux and three-DOF decoupling mechanism. Firstly, the structure working principle of new are presented. Then, numerical simulations performed to analyze its magnetic field torque, resulting in basic performance curve motor. Finally, The this is optimized by simulation. optimization results show that has been effectively improved terms torque ripple, output control precision.
In the context of surface-mounted permanent magnet synchronous motor, electromagnetic computational models are conventionally utilized to calculate resulting output torque based on input currents. However, motor performance metrics commonly formulated in terms power. Consequently, when conducting multi-objective optimization electric motors, it becomes imperative assess whether calculated aligns with specified requirements. The process sensitivity Analysis during often generates a...