Electronic speed control

Chat with Graph Search

Ask any question about EPFL courses, lectures, exercises, research, news, etc. or try the example questions below.

DISCLAIMER: The Graph Chatbot is not programmed to provide explicit or categorical answers to your questions. Rather, it transforms your questions into API requests that are distributed across the various IT services officially administered by EPFL. Its purpose is solely to collect and recommend relevant references to content that you can explore to help you answer your questions.

Depending on the winding configuration, the intrinsic characteristic of a motor differs. By reconfiguring the winding, it becomes possible to increase the torque–speed limitation of a motor. Current proposed methodologies for dynamically reconfiguring the ...

When learning skills from demonstrations, one is often required to think in advance about the appropriate task representation (usually in either operational or configuration spaces). We here propose a probabilistic approach for simultaneously learning and synthesizing torque control commands which take into account task, joint and force constraints. We treat the problem by considering different torque controllers acting on the robot, whose relevance is learned probabilistically from demonstrations. This inf

For truck and electric two-wheel applications, the design target is an electric motor with working point in the range of 18-20Nm @ 4000rpm functioning at ambient temperatures from -40°C to 105°C. The design will be based on an existing Sonceboz BLDC motor. The objective of this master project is to design an external rotor BLDC motor with integrated electronics for 48V onboard power supply with given design constraints: 1) Definition of the motor structure and design optimization (electromagnetic simulation

Energy saving becomes more and more important. Therefore different improvements have been made in motor design, electronic devices and software in order to increase the overall efficiency of electronic motor drives. Permanent Magnet Synchronous Motors (PMSM) are widely used in different applications requiring high precision and speed control. Using an inverter stage to create the 3-phase sinusoidal waveform currents causes losses in the switches. The aim of this project is to investigate a possible switchin

This paper presents a complete method for optimizing a linear actuator in order to perform its sensorless speed control. The optimizer maximizes the difference of inductances between two positions of interest in order to perform the efficient position detection. The paper shows how the modifications made on a normal E-shaped reluctant actuator achieve the objective of sensorless position detection and speed control.

The paper presents a detailed analysis and comparison of two types of non-axial windings used for slotless permanent magnet (PM) motors: zigzag and rhombic ones. The motor mathematical model is verified by 3D FEM software. Finally, the motor prototype is presented.

Purpose - The purpose of this paper is to develop a contactless torque measurement methods. The need for low-weight, high-efficiency and high-power density motors has led to an increased research and development activity in the field of very high speed (VHS) motors or generators. Torque measurement methods are inherently linked with the target speed and power of the motor. Therefore, new torque measurement methods compatible with VHS need to be designed in order to apprehend this new area of electrical mach

Nowadays, more and more electrical motors are being used in mobile applications, such as hybrid cars for the automotive sector or even in aeronautics applications. A typical example is the solar impulse airplane which is propelled with four electrical motors powered only with solar cells. This example is for now an exception, but it is very likely it will become more and more common in coming years. The importance of having a light and ecient motor for such applications is obvious. This report presents a wa

The Inertia Wheel Assembly (IWA) is composed by the IWA motor, the inertia wheel and the command electronics. IWA belongs to the Attitude Determination and Control System (ADCS) of the SwissCube satellite. Swisscube is a pico-satellite that complies with CubeSat specifications. It will be the first satellite entirely developed by students at EPFL. Its principal characteristics are the dimension, 10x10x10 cm and weight, 1Kg. The objective of this project is to develop a low power electronic equipment able to

The presence of oil in domestic heat pumps is a hindrance, particularly for enhanced surface evaporators and for advanced concepts based on two-stage cycles. Very compact oil-free dynamic compressor directly driven by high speed electric motors and supported on refrigerant vapor bearings represent a promising alternative. This paper presents a design analysis of the first stage prototype with the various tradeoffs between the impeller characteristics to follow the seasonable heat demand, the bearing and rot

The aim of this project is the design and the optimization of the electrical motors used in the Continuously Variable Transmission (CVT) system currently under development at JTEKT, an automotive part supplier company. Two motors are needed for the control of the pumps providing the pressures to the hydraulic circuit of the CVT. According to the operating conditions of such a system, a brushless DC (BLDC) motor, known for its high reliability, good thermal evacuation and high efficiency, has been chosen.

Electronic speed control

Chat with Graph Search

Current Control Strategy for Dynamic Winding Reconfiguration of Slotless Brushless DC Motors

Probabilistic Learning of Torque Controllers from Kinematic and Force Constraints

Design of an external BLDC motor with integrated electronics for 48V on-board power supply

Method for a switching loss reduction in PM drives

Design for Self-Sensing of a Linear Actuator

Analysis of BLDC motor with zigzag and rhombic winding

Torque measurement methods for very high-speed motors

Optimization of a BLDC motor using a genetic algorithm

SwissCube Inertia Wheel Assembly - Electronics

High-Speed Low Power Radial Turbocompressor For Oil-Free Heatpumps

Optimization of the Motors for the Control of the CVT Servo-Pumps