Search results for "steering"
showing 10 items of 33 documents
Robust Composite Nonlinear Feedback Path-Following Control for Independently Actuated Autonomous Vehicles With Differential Steering
2016
This paper investigates utilizing the front-wheel differential drive-assisted steering (DDAS) to achieve the path-following control for independently actuated (IA) electric autonomous ground vehicles (AGVs), in the case of the complete failure of the active front-wheel steering system. DDAS, which is generated by the differential torque between the left and right wheels of IA electric vehicles, can be utilized to actuate the front wheels as the sole steering power when the regular steering system fails, and thus avoids dangerous consequences for AGVs. As an inherent emergency measure and an active safety control method for the steering system of electric vehicles, DDAS strategy is a valuabl…
Effects of whole-body vertical shock-type vibration on human ability for fine manual control
1991
The effects of vertical (z-axis) whole-body shock-type vibration on the ability for fine manual control were examined. The amplitudes and frequency of the shocks was varied, but a constant frequency-weighted acceleration of 1.25 m/s2 r.m.s. was maintained. The examination of the shock's effects was carried out using an experimental system that simulated the actual workplace of earth-moving machinery. Control was measured using a first-order pursuit tracking-test, in which a seated subject was asked to use both hands to direct a cursor on a monitor using a steering wheel. Although the magnitude of shocks (peak amplitude of 6-10 m/s2) and the number of shocks per unit time (shock cycle of 10-…
Improving Quality of Care in Inflammatory Bowel Disease Through Patients’ Eyes: IQCARO Project
2019
Abstract Background Quality improvement is a major topic in inflammatory bowel disease (IBD) care, and measuring quality of care (QoC) is necessary for QoC improvement. Most QoC projects or consensus statements are designed from the health care professional point of view. Having QoC indicators designed for and fully evaluable by patients may provide a key tool for external evaluation of QoC improvement measures. The aim of the IQCARO project was to identify indicators to measure QoC from the IBD patient’s point of view. Methods An extensive review of the literature to identify indicators of QoC was performed; first the identified indicators were reviewed by a steering committee including pa…
”Meillä ei ole politiikkaa valtionavustuksissa!”
2021
Valtionavustustoiminta on olennainen osa suomalaista yhteiskuntapolitiikkaa ja valtionhallinnon ohjausjärjestelmää. Avustamista toimeenpanevat ministeriöt, tulosohjatut virastot sekä muut asiantuntijaorganisaatiot. Artikkelimme tutkii kulttuurihallinnon virkakunnan vallankäyttöä opetus- ja kulttuuriministeriön (OKM) valtionavustuspolitiikassa. Ymmärrämme kulttuurihallinnon ohjausvälineineen merkittävänä valtaa käyttävänä organisaatiorakenteena. Tarkastelu pohjautuu arviointitutkimukseen OKM:n tulosohjaaman asiantuntijaviraston Taiteen edistämiskeskuksen (Taike) valtionavustusprosessista. Artikkelimme on tapaustutkimus, jossa kuvaamme kulttuuripolitiikan toimeenpanorakent…
Social Network Analysis and Qualitative Interviews for Assessing Geographic Characteristics of Tourism Business Networks.
2015
This study integrates quantitative social network analysis (SNA) and qualitative interviews for understanding tourism business links in isolated communities through analysing spatial characteristics. Two case studies are used, the Surselva-Gotthard region in the Swiss Alps and Longyearbyen in the Arctic archipelago of Svalbard, to test the spatial characteristics of physical proximity, isolation, and smallness for understanding tourism business links. In the larger Surselva-Gotthard region, we found a strong relationship between geographic separation of the three communities on compartmentalization of the collaboration network. A small set of businesses played a central role in steering col…
Data Acquisition System for the Characterization of Biomechanical and Ergonomic Thresholds in Driving Vehicles
2020
Directive (EU) 2015/653 on driving licenses has involved the modification of different codes that must appear on driver&rsquo
Third Sector, Social Enterprises and Local Authorities in a EU Candidate Country. The Case of Albania
2013
The paper is based on evidence offered by survey data collected through a structured questionnaire in a long range survey launched in July 2012 by the Steering Group of ASE Forum. The aim of the study was to reveal the trend, status, profile, features and the role of potentials enterprises in Albania in supporting welfare and wellbeing in synergy with the local authorities.After an appropriate methodological introduction, the paper reports main statistical evidence concerning the Third sector in Albania and the direct survey outcomes about the features and the activity of the organizations interviewed.Conclusions will be driven by data analysis and will be focused on the needs, limits and o…
Reliability Approach to the Design, Construction and Use of Natural Draught Cooling Towers
1989
Structures or structural elements should be designed and constructed such they are suited to their intended use. But principles for the design, construction, use and maintenace are changing evolutionary. It is due to fundamental research and the progress in technology.
Local path planning in a complex environment for self-driving car
2014
This paper introduces an local path planning algorithm for the self-driving car in a complex environment. The proposed algorithm is composed of three parts: the novel path representation, the collision detection and the path modification using a voronoi cell. The novel path representation provides convenience for checking the collision and modifying the path and continuous control input for steering wheel rather than way point navigation. The proposed algorithm were applied to the self-driving car, EureCar(KAIST) and its applicability and feasibility of real time use were validated.
On the sway stability improvement of car–caravan systems by articulated connections
2015
The present analysis is addressed to some promising connection arrangements between the towing vehicles and the towed trailers, where the two units are linked by four-bar isosceles trapeziums in place of the conventional pintle hitch. Two types of instability, of the divergent type or the oscillating type, may be analysed by the Routh–Hurwitz criterion or by the direct analysis of the characteristic equation. The constant term of this equation vanishes at the divergent instability threshold (zero of a real root), whereas the equation splits into two lower degree algebraic ‘sub-equations’ when the oscillating instability arises (pair of pure imaginary roots). A large field of geometrical con…