Chenyang Ding

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A Frequency-Shaped Sliding Surface Control (FSSSC) approach is applied to an unstable model of a candidate Electro-Magnetic Isolator (EMI) design which has three Degrees Of Freedom (DOF). The EMI is designed to achieve contactless passive gravity compensation for heavy load by permanent magnets. The 3-DOF model can be regarded as three exactly the same(More)
For a high-performance 6-DOF Active Vibration Isolation System (AVIS), the vibration isolation performance (transmissibility) is the most important criterion and the disturbance rejection performance (compliance) has lower priority. The strategy of combining modal decomposition and frequency-shaped sliding surface control is applied based on the measurement(More)
Wireless sensor networks have been widely utilized in many applications such as environment monitoring and controlling. Appropriate sensor deployment scheme to achieve the maximal coverage is crucial for effectiveness of sensor network. In this paper, we study coverage optimization problem with hopping sensors. Although similar problem has been investigated(More)
The control objectives of this application are seeking, vibration isolation and force disturbance rejection. The vibration isolation performance (transmissibility) up to 1000 [Hz] is evaluated by simulation with both white noise vibrations and sweep sine vibrations. Simulation shows that the transmissibility magnitude peak is shifted to lower frequency by(More)
For mobile robot local path planning under outdoor environment, Ridge Regression Extreme Learning Machines (RRELM) is adopted, it is a fast machine learning classification method to apply in path planning. Firstly, the laser rangefinder data are extracted and marked to describe the outdoor environment. Secondly, ridge regression theory is utilized to(More)
In this paper, we propose hybrid reaction–diffusion Cohen–Grossberg neural networks (RDCGNNs) with variable coefficients and mixed time delays. By using the Lyapunov–Krasovkii functional approach, stochastic analysis technique and Hardy inequality, some novel sufficient conditions are derived to ensure the pth moment exponential stability of hybrid RDCGNNs(More)
This paper concerns measurements on an electromagnetic six Degrees-of-Freedom (DoF) anti-vibration system that has been realized recently. The heart of this system is a fully passive permanent-magnet device which acts as a contactless magnetic spring. As such, the gravity force of a floating rigid metrology frame (730 kg) is compensated by the passive(More)
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