Analysis and optimisation for inerter-based isolators via fixed-point theory and algebraic solution

http://hub.hku.hk/bitstream/10722/200658/1/Content.pdf

Influence of inerter on natural frequencies of vibration systems

http://hub.hku.hk/bitstream/10722/200659/1/Content.pdf

Passive vehicle suspensions employing inerters with multiple performance requirements

This paper investigates the possibility of improving the performance of railway vehicle suspensions by incorporating a newly developed mechanical device known as the inerter A comparative study of several low-complexity passive suspension layouts is made Improved performance for the lateral and vertical ride comfort, as well as lateral body movement when curving are demonstrated in comparison with the conventional suspension layout The constraints imposed are to maintain the same level of other performance metrics The calculations and optimisations are based on linearised plan-view and side-view high-speed train mathematical models

Passive suspensions incorporating inerters for railway vehicles

Autonomous operation and control of photovoltaic/solid oxide fuel cell/battery energy storage based microgrid using fuzzy logic controller

This paper discusses the use of inerters to improve the stability and performance of a full-train system. First, we construct a 28 degree-of-freedom train model in AutoSim, and obtain a linearised model for analysis in Matlab. Then, the benefits of inerters are investigated by the critical speed, settling time and passenger comfort. In addition, we apply a new mechatronic network for further performance improvement, and synthesise the optimal electrical circuit for experimental verification. From the results, inerters are shown to be effective in improving the stability and performance of train systems.

Stability and performance analysis of a full-train system with inerters

Control design and power management of a stationary PEMFC hybrid power system

This article develops a long-stroke nano-positioning stage and discusses the impacts of sensor layouts on the positioning performance. The stage consists of a piezoelectric-transducer stage and a motor stage. First, we obtain the transfer functions of the two stages by experiments and design robust loop-shaping controllers to improve their performance. Second, we integrate the two stages and designed two sensor layouts, a local sensor layout using encoders and a global sensor layout using laser interferometers, to achieve precision positioning for large travels. Finally, we implement the designed controllers and sensor layouts for experimental verification. Based on the results, the proposed combined stage is deemed effective in accomplishing nano-positioning for long displacements. In addition, the local sensor layout can achieve high precision but with global misalignments, while the global sensor layout can eliminate the global misalignments but suffer large sensor noises. Therefore, we further constru...

https://journals.sagepub.com/doi/pdf/10.1177/1687814016680192

Impacts of sensor layouts on the performance of a long-stroke nano-positioning stage:

This paper investigates the performance improvement by applying inerters to the full-car model First, we introduced a mechatronic inerter network that consists of mechanical and electrical impedances Second, we built the full-car model and introduced two performance indices that are used for performance optimization employing several suspension layouts Third, we applied network syntheses to realize the obtained electrical networks and adjusted system performance by switching the connected circuits From the results, the mechatronic inerter is shown to be beneficial for improving performance of the full-car model

Performance benefits of a full-car model with mechatronic inerter networks

This paper discusses the effects of PEMFC power managements on the cost and reliability of a hybrid power system. The hybrid power consists of a proton exchange membrane fuel cell (PEMFC), a chemical hydrogen production system, photovoltaic arrays, and a Li-Fe secondary battery set. First, we build a simulation model by MATLAB/ SimPowerSystem™, and adjust the model parameters based on experimental responses. Second, we define the system cost and reliability indexes. Third, we apply the lab load profiles to the model, and discuss the effects of different PEMFC power regulation methods on system costs and reliability. Based on the results, suitable management strategies with corresponding component sizes can minimize system costs while satisfying the reliability requirements. In the future, the developed simulation model can be applied to develop customized power systems.

Hsueh-Ju Chen

Papers

Stability and performance analysis of a full-train system with inerters

Control design and power management of a stationary PEMFC hybrid power system

Impacts of sensor layouts on the performance of a long-stroke nano-positioning stage:

Performance benefits of a full-car model with mechatronic inerter networks

The design of power regulation strategies for a hybrid PEMFC power system