Jason Keith Moore

Jason Keith Moore
Delft University of Technology | TU · Department of Biomechanical Engineering

Ph.D. in Mechanical and Aerospace Engineering

About

44
Publications
47,596
Reads
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1,310
Citations
Introduction
I am interested in how humans are able to control machines, both complex and simple. I'm particularly fond of understanding how people balance on and control bicycles. I strive to create open and reusable science through a solid understanding and use of computational science.
Additional affiliations
August 2020 - present
Delft University of Technology
Position
  • Professor (Assistant)
September 2015 - June 2020
University of California, Davis
Position
  • Professor (Assistant)
July 2013 - August 2015
Cleveland State University
Position
  • PostDoc Position
Education
June 2007 - August 2012
University of California, Davis
Field of study
  • Mechanical and Aerospace Engineering
September 2005 - June 2007
University of California, Davis
Field of study
  • Mechanical and Aeronautical Engineering
August 2000 - December 2004
Old Dominion University
Field of study
  • Mechanical Engineering

Publications

Publications (44)
Preprint
Most American snowsport resorts now have terrain parks and decades-long epidemiological evidence correlates terrain park use with injuries. Engineering design of jumps could reduce injuries by limiting equivalent fall heights (EFHs), which indicate dissipated landing impact energy. No evidence refutes making terrain park jumps safer in this way. We...
Article
Bicycle paths or even bicycle lanes have not emerged as key priorities in traditional pavement systems analysis. Most cities rely on route preferences (e.g., common school routes) or visual checks to prioritize pavement conditions on bicycle facilities. We used 31 bike path sections with a representative range of pavement surface conditions to coll...
Article
Bicycle paths or even bicycle lanes have not emerged as key priorities in traditional pavement systems analysis. Most cities rely on route preferences (e.g., common school routes) or visual checks to prioritize pavement conditions on bicycle facilities. We used 31 bike path sections with a representative range of pavement surface conditions to coll...
Article
Full-text available
Competitive rowing highly values boat position and velocity data for real-time feedback during training, racing and post-training analysis. The ubiquity of smartphones with embedded position (GPS) and motion (accelerometer) sensors motivates their possible use in these tasks. In this paper, we investigate the use of two real-time digital filters to...
Conference Paper
Full-text available
Although conventional bicycles have evolved into the familiar fundamental design, there may exist bicycle designs that handle better when performing lateral maneuvers. Prior studies have provided evidence that optimizing for handling by varying trail, wheelbase, steer axis tilt, front wheel radius, and front wheel inertia can produce such bicycle d...
Conference Paper
Full-text available
Previously, we introduced a method of optimizing four primary geometric parameters of a bicycle's design to maximize its lateral handling qualities. Here we expand that method to optimize over all of the geometric and inertial parameters in the linear Whipple-Carvallo bicycle model. To ensure physically realizable bicycle designs we include 7 equal...
Conference Paper
Full-text available
Speed control is not a prevalent feature found in electric bicycles. Many electric bicycles implement a pseudo speed controller that does not include feedback based on sensing speed. As with automobiles, speed control can be desirable for driver comfort and safety. Additionally, accurate speed control is also very helpful when validating dynamic mo...
Preprint
Full-text available
Competitive rowing highly values boat position and velocity data for real-timefeedback during training, racing and post-training analysis. The ubiquity ofsmartphones with embedded position (GPS) and motion (accelerometer) sensorsmotivates their possible use in these tasks. In this paper, we investigate theuse of two real-time digital filters to ach...
Article
Full-text available
SymPy is an open source computer algebra system written in pure Python. It is built with a focus on extensibility and ease of use, through both interactive and programmatic applications. These characteristics have led SymPy to become a popular symbolic library for the scientific Python ecosystem. This paper presents the architecture of SymPy, a des...
Conference Paper
Full-text available
We present a method to find an optimal handling bicycle using purely analytical and numerical means. Given a linear parametrized bicycle vehicle model, a simple manual controller, and a model-based metric that correlates with subjective handling measures, we formulate the search for optimal geometric parameters that give the best handling bicycle....
Preprint
Full-text available
SymPy is an open source computer algebra system written in pure Python. It is built with a focus on extensibility and ease of use, through both interactive and programmatic applications. These characteristics have led SymPy to become the standard symbolic library for the scientific Python ecosystem. This paper presents the architecture of SymPy, a...
Preprint
Full-text available
SymPy is an open source computer algebra system written in pure Python. It is built with a focus on extensibility and ease of use, through both interactive and programmatic applications. These characteristics have led SymPy to become the standard symbolic library for the scientific Python ecosystem. This paper presents the architecture of SymPy, a...
Preprint
Full-text available
SymPy is an open source computer algebra system written in pure Python. It is built with a focus on extensibility and ease of use, through both interactive and programmatic applications. These characteristics have led SymPy to become the standard symbolic library for the scientific Python ecosystem. This paper presents the architecture of SymPy, a...
Preprint
Full-text available
SymPy is an open source computer algebra system written in pure Python. It is built with a focus on extensibility and ease of use, through both interactive and programmatic applications. These characteristics have led SymPy to become the standard symbolic library for the scientific Python ecosystem. This paper presents the architecture of SymPy, a...
Thesis
The 2012 doctoral dissertation of Jason K. Moore.
Preprint
Full-text available
Here we share a rich gait data set collected from fifteen subjects walking at three speeds on an instrumented treadmill. Each trial consists of 120 seconds of normal walking and 480 seconds of walking while being longitudinally perturbed during each stance phase with pseudo-random fluctuations in the speed of the treadmill belt. A total of approxim...
Preprint
Full-text available
Here we share a rich gait data set collected from fifteen subjects walking at three speeds on an instrumented treadmill. Each trial consists of 120 seconds of normal walking and 480 seconds of walking while being longitudinally perturbed during each stance phase with pseudo-random fluctuations in the speed of the treadmill belt. A total of approxim...
Article
Full-text available
Here we share a rich gait data set collected from fifteen subjects walking at three speeds on an instrumented treadmill. Each trial consists of 120 s of normal walking and 480 s of walking while being longitudinally perturbed during each stance phase with pseudo-random fluctuations in the speed of the treadmill belt. A total of approximately 1.5 h...
Article
Full-text available
We present an open source software implementation of a popular mathematical method developed by M.R. Yeadon for calculating the body and segment inertia parameters of a human body. The software is written in a high level open source language and provides three interfaces for manipulating the data and the model: a Python API, a command-line user int...
Preprint
Full-text available
Here we share a rich gait data set collected from fifteen subjects walking at three speeds on an instrumented treadmill. Each trial consists of 120 seconds of normal walking and 480 seconds of walking while being longitudinally perturbed during each stance phase with pseudo-random fluctuations in the speed of the treadmill belt. A total of approxim...
Preprint
Full-text available
Here we share a rich gait data set collected from fifteen subjects walking at three speeds on an instrumented treadmill. Each trial consists of 120 seconds of normal walking and 480 seconds of walking while being longitudinally perturbed during each stance phase with pseudo-random fluctuations in the speed of the treadmill belt. A total of approxim...
Article
Full-text available
A model describing rider control while steering and stabilizing a bicycle has been developed. Experimental data were obtained from riding a bicycle on a narrow treadmill while perturbing balance with impulsive forces at the seat post. The experiments were conducted at 2-7 m/s covering both the stable and the unstable forward speed range. Bicycle an...
Conference Paper
Full-text available
The research to be described presents a preliminary analysis of a method for identifying a limited set of parameters from the Structural Pilot Model using data from human-in-the loop simulation tasks. Four simple controlled-element dynamics are chosen requiring pilot compensation ranging from lags to first-order leads. Then tracking data for longit...
Conference Paper
Full-text available
Symbolic equations of motion (EOMs) for multibody systems are desirable for simulation, stability analyses, control system design, and parameter studies. Despite this, the majority of engineering software designed to analyze multibody systems are numeric in nature (or present a purely numeric user interface). To our knowledge, none of the existing...
Conference Paper
Full-text available
Rider control in bicycling is modeled by first adding the rider as a passive mechanism to the Whipple bicycle model. Next, for the rider control model a linear PID controller with and without delay is assumed, where the control inputs are the bicycle roll and steer angle with their higher derivatives, and the control output is the action-reaction s...
Thesis
Full-text available
The 2012 doctoral dissertation of Jason K. Moore.
Article
Full-text available
A control-theoretic model of the bicycle rider is developed. The model has its origins in pilot modeling efforts previously reported in the literature. A handling qualities metric that was employed in pilot/vehicle analysis is adopted for use in estimating the task-independent handling qualities of bicycles. The resulting model is parameterized by...
Article
Full-text available
Recent observations of a bicyclist riding through town and on a treadmill show that the rider uses the upper body very little when performing normal maneuvers and that the bicyclist may, in fact, primarily use steering input for control. The observations also revealed that other motions such as lateral movement of the knees were used in low speed s...
Article
Full-text available
An overview of bicycle and rider kinematic motions from a series of experimental treadmill tests is presented. The full kinematics of bicycles and riders were measured with an active motion capture system. Motion across speeds are compared graphically with box and whiskers plots. Trends and ranges in amplitude are shown to characterize the system m...
Article
Full-text available
A low power, light-weight, and modular system of sensors and data acquisition hardware was developed to measure the configuration, velocities, and accelerations of a bicycle. Measurement of angular velocity of the bicycle frame, acceleration of three points fixed to the frame, steer angle, and wheel spin rates is implemented. Measurements will be c...
Chapter
Full-text available
Bicycles are inherently dynamically stable and this stability can be beneficial to handling qualities. A dynamical model can predict the self-stability. Previous models determined the sensitivity of stability to changes in parameters, but have often used idealized parameters occurring in the equations of motion that were not possible to realistical...
Conference Paper
Full-text available
The purpose of this study is to identify human control actions in normal bicycling. The task under study is the stabilization of the mostly unstable lateral motion of the bicycle-rider system. This is done by visual observation of the rider and measuring the vehicle motions. The observations show that very little upper-body lean occurs and that sta...
Conference Paper
Full-text available
A method is presented to estimate and measure the geometry, mass, centers of mass and the moments of inertia of a typical bicycle and rider. The results are presented in a format for ease of use with the benchmark bicycle model [1]. Example numerical data is also presented for a typical male rider and city bicycle.
Conference Paper
Full-text available
Bicycles are inherently dynamically stable and this stability can be beneficial to handling qualities. A dynamical model can predict the self-stability. Previous models determined the sensitivity of stability to changes in parameters, but have often used idealized parameters occurring in the equations of motion that were not possible to realistical...
Article
Full-text available
Accurate measurements of a bicycle's physical parameters are required for realistic dynamic sim-ulations and analysis. The most basic models require the geometry, mass, mass location and mass distributions for the rigid bodies. More complex models require estimates of tire characteristics, human characteristics, friction, stiffness, damping, etc. I...

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