This paper examines an early, proof of concept solution for the design of a three - phase power inverter. The need for an inverter design is required for the drivetrain component (Linear Induction Motor) of a magnetic...
详细信息
ISBN:
(纸本)9781728109114
This paper examines an early, proof of concept solution for the design of a three - phase power inverter. The need for an inverter design is required for the drivetrain component (Linear Induction Motor) of a magnetic levitation / Hyperloop transportation system. The design revolves around a typical inverter topology driven by an open-loop controller design. The design proposed in this paper is the integration of an Arduino microcontroller and an inverter circuit. The proposed inverter circuit consists of the main components which includes a three - phase gate driver and Insulated Bipolar Transistors (IGBTs) rated for 600V and a PWM controller. The controller used provides the required pulse width modulation (PWM) signals to drive the inverter circuit. The validity of the proposed design is proven through the comparison of the simulations performed in PSIM and the experimental results.
A singularity-free nonlinear hierarchical control framework is proposed in this paper for control of a quad-rotorcraft unmanned aerial vehicle (UAV). A saturation control scheme with hyperbolic tangent function is des...
详细信息
ISBN:
(纸本)9781538679012;9781538679265
A singularity-free nonlinear hierarchical control framework is proposed in this paper for control of a quad-rotorcraft unmanned aerial vehicle (UAV). A saturation control scheme with hyperbolic tangent function is designed for the position loop controller to ensure non-singular command attitude extraction and the effect of nonlinear coupling between the position and attitude subsystem is subsequently analyzed. The problem of sign-ambiguity commonly appears in reference attitude is overcome using arc tangent function by considering the signs of both the arguments. To obviate the problem of singularity during attitude tracking, a non-singular attitude loop controller using barrier Lyapunov function (BLF) with corresponding initial condition constraint is proposed. A rigorous stability analysis proves that the overall closed-loop system is asymptotically stable (AS) and all the signals are bounded in the cascaded control structure. The singularity-free hierarchical control development and its stability analysis exploits the full state space Euler-Lagrange under-actuated dynamics in terms of generalized coordinates with generalized force and torque collocated with generalized velocities. Simulation results show the performance of the proposed controller.
Many industrial motion systems use electronic motors. However, big power systems that make automobile frames, roll blending machines and many other systems can't use electronic motors due the latter's relative...
详细信息
ISBN:
(纸本)9781424447749
Many industrial motion systems use electronic motors. However, big power systems that make automobile frames, roll blending machines and many other systems can't use electronic motors due the latter's relatively small power. In order to solve this problem, we propose using hydraulic systems. The open-loop control method and the close-loop control method are widely used to control hydraulic systems. Among hydraulic systems, we focus on the control hydraulic press system;particularly, the hydraulic press system that operates with vertical movement and has big weight. In this case, if the close-loop method is applied to the hydraulic press system, then vibration and noise problems will occur due to the inertia of the press system. In this paper, we propose using the conversion controller between the open-loop controller and the close-loop controller. Also, we experiment with a variety of interpolation methods in the close-loop controller in order to efficiently control the hydraulic press system.
暂无评论