Global ETD Search

1	Design of a Proprioceptive Actuator Utilizing a Cycloidal Gearbox Kimball, Craig John 01 June 2022 (has links) (PDF) Legged robotics creates the demand for high torque compact actuators able to develop high instantaneous torque. Proprioceptive actuator design theory is a design theory that removes the need for a torque feedback device and relies on the stiffness in the leg for absorbing the high Ground Impact Forces created by walking locomotion. It utilizes a high torque density motor paired with a gearbox with a high gear ratio for torque multiplication. Previously work has been done to design a proprioceptive actuator design that utilizes a planetary gearbox to create a modular low-cost actuator for legged robotics. The purpose of this thesis is to design and analyze a proprioceptive actuator that utilizes a cycloidal gearbox design to test the feasibility of the gearbox design and look at the advantages it might bring over a planetary gearbox design. A cycloidal gearbox utilizes eccentric motion of cycloidal disks, made of epicycloids, to create a high gear ratio in a very limited space without having to rely on expensive gears for torque multiplication purposes. A prototype low-cost actuator was developed using a 2-disk cycloidal gearbox in its design. It was tested for wear life and torque control and was able to meet the torque and operation requirements of the Cal Poly legged robotics project. The design was also optimized to be made using low-cost additive manufacturing techniques rather than relying on conventional machining. Robotics Cal Poly Legged Robotics Actuator Cycloidal Gearbox Gearbox Cycloid Applied Mechanics Manufacturing Mechanical Engineering Other Engineering
2	Modelling and Design of a Test Rig to investigate the dynamic behaviour of a Servo driven Powertrain / Modellierung und Entwurf eines Versuchsstandes zur Untersuchung des dynamischen Verhaltens eines servogetriebenen Antriebsstranges Wittwer, Max 26 March 2018 (has links) (PDF) In the present work a simulation model for examining the fundamental dynamic behaviour of a servo driven powertrain is developed. This powertrain consists of a permanent magnet synchronous motor, a cycloidal gearbox and a torque motor to apply a load. On basis of this model the selection of components for the design of a test rig is possible. This leads to the constructive draft of the test rig. In order to model the system, the fundamentals give a brief overview of the components incorporated in the test rig system. With ais of the specified task the simulation purpose is defined and the modelling process enabled. The subsequent system analysis is performed intensively to decompose the system into subsystems, which are then investigated to find the optimal modelling approach for the given simulation task. Particular emphasis is put on the investigation of the cycloidal gearbox subsystem and it shows, that approaches for modelling the dynamic behaviour of the gearbox as a whole have only been published partially. Therefore, the available modelling approaches are analysed and suitable models are developed as conceptual models. Those will be formalised and implemented in Matlab/Simulink. The model is verified and simulation experiments are performed, that help in the selection of suitable test rig components. On basis of a flexible test rig, finally the constructive draft is presented. Modellieren Modell Versuchsstand Simulation PMSM Servo Motor Konzeptmodell Systemanalyse Matlab Simulink Antriebsstrang Zykloidengetriebe Zykloide Zykloid Cyclogetriebe cycloidal Modelling Model Test Rig Simulation PMSM Servo Motor Conceptual Model System Analysis Matlab Simulink Powertrain Cycloidal Gearbox Cyloidal Drive Cyclo ddc:620 rvk:ZL 3257
3	Modelling and Design of a Test Rig to investigate the dynamic behaviour of a Servo driven Powertrain Wittwer, Max 14 December 2017 (has links) In the present work a simulation model for examining the fundamental dynamic behaviour of a servo driven powertrain is developed. This powertrain consists of a permanent magnet synchronous motor, a cycloidal gearbox and a torque motor to apply a load. On basis of this model the selection of components for the design of a test rig is possible. This leads to the constructive draft of the test rig. In order to model the system, the fundamentals give a brief overview of the components incorporated in the test rig system. With ais of the specified task the simulation purpose is defined and the modelling process enabled. The subsequent system analysis is performed intensively to decompose the system into subsystems, which are then investigated to find the optimal modelling approach for the given simulation task. Particular emphasis is put on the investigation of the cycloidal gearbox subsystem and it shows, that approaches for modelling the dynamic behaviour of the gearbox as a whole have only been published partially. Therefore, the available modelling approaches are analysed and suitable models are developed as conceptual models. Those will be formalised and implemented in Matlab/Simulink. The model is verified and simulation experiments are performed, that help in the selection of suitable test rig components. On basis of a flexible test rig, finally the constructive draft is presented.:1 Introduction 1.1 Motivation 1.2 Procedure 2 Fundamentals 2.1 Definitions 2.2 Modelling 2.3 Servo Drive 2.3.1 Introduction 2.3.2 Permanent Magnet Synchronous Motor 2.3.3 Servo Inverter 2.3.4 Control System 2.4 Torque Motor 2.5 Gearbox 3 Specified Task 4 System Analysis 4.1 Introduction 4.2 Servo Inverter 4.3 Control System 4.4 Servo Motor 4.5 Transmission Elements 4.6 Cycloidal Gearbox 5 Model Formalisation 5.1 Introduction 5.2 Servo Inverter 5.3 Control System 5.4 Servo Motor 5.5 Transmission Elements 5.6 Cycloidal Gearbox 6 Model Implementation 6.1 Introduction 6.2 Servo Inverter 6.3 Control System 6.4 Servo Motor 6.5 Transmission Elements 6.6 Cycloidal Gearbox 7 Simulation 7.1 Introduction 7.2 Solver 7.3 Verification 7.4 System Evaluation 7.4.1 Sensitivity Analysis 7.4.2 Stability Analysis 8 Design of the Test Rig 8.1 Selection of the components 8.2 Constructive Draft 9 Summary and Outlook info:eu-repo/classification/ddc/620 ddc:620

1

Page generated in 0.238 seconds