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All Outputs (25)

Locally fitting hyperplanes to high-dimensional data (2022)
Journal Article
Hou, M., & Kambhampati, C. (2022). Locally fitting hyperplanes to high-dimensional data. Neural Computing and Applications, 34(11), 8885-8896. https://doi.org/10.1007/s00521-022-06909-y

Problems such as data compression, pattern recognition and artificial intelligence often deal with a large data sample as observations of an unknown object. An effective method is proposed to fit hyperplanes to data points in each hypercubic subregio... Read More about Locally fitting hyperplanes to high-dimensional data.

Modeling and control of anterior–posterior and medial–lateral sways in standing posture (2022)
Journal Article
Hou, M., Fagan, M., Vanicek, N., & Dobson, C. A. (2022). Modeling and control of anterior–posterior and medial–lateral sways in standing posture. Journal of biomechanics, 134, Article 110930. https://doi.org/10.1016/j.jbiomech.2021.110930

To study essential anterior–posterior and medial–lateral sways of the stance caused by rotational movements about the ankle and hip joints, a mathematical model is developed for the 3D postural kinematics and dynamics. The model is in the form of non... Read More about Modeling and control of anterior–posterior and medial–lateral sways in standing posture.

Assessments of bilateral asymmetry with application in human skull analysis (2021)
Journal Article
Hou, M., & Fagan, M. J. (2021). Assessments of bilateral asymmetry with application in human skull analysis. PLoS ONE, 16(10), Article e0258146. https://doi.org/10.1371/journal.pone.0258146

As a common feature, bilateral symmetry of biological forms is ubiquitous, but in fact rarely exact. In a setting of analytic geometry, bilateral symmetry is defined with respect to a point, line or plane, and the well-known notions of fluctuating as... Read More about Assessments of bilateral asymmetry with application in human skull analysis.

Force–length relation of skeletal muscles: from sarcomeres to myofibril (2018)
Journal Article
Hou, M. (2018). Force–length relation of skeletal muscles: from sarcomeres to myofibril. Biomechanics and Modeling in Mechanobiology, 17(6), 1797-1810. https://doi.org/10.1007/s10237-018-1057-0

Sarcomeres are building blocks of skeletal muscles. Given force–length relations of sarcomeres serially connected in a myofibril, the myofibril force–length relation can be uniquely determined. Necessary and sufficient conditions are derived for capa... Read More about Force–length relation of skeletal muscles: from sarcomeres to myofibril.

Modelling, analysis and feedback control design for upright standing sways (2017)
Thesis
Mohammed, G. A. (2017). Modelling, analysis and feedback control design for upright standing sways. (Thesis). University of Hull. Retrieved from https://hull-repository.worktribe.com/output/4219855

Human body upright standing is inherently unstable, and as a bipedal creature, the body can implement several functions such as upright standing, walking and running, with the help of the central nervous system. Understanding the stability control of... Read More about Modelling, analysis and feedback control design for upright standing sways.

Robust model-based fault estimation and fault-tolerant control : towards an integration (2017)
Thesis
Lan, J. (2017). Robust model-based fault estimation and fault-tolerant control : towards an integration. (Thesis). University of Hull. Retrieved from https://hull-repository.worktribe.com/output/4219844

To maintain robustly acceptable system performance, fault estimation (FE) is adopted to reconstruct fault signals and a fault-tolerant control (FTC) controller is employed to compensate for the fault effects. The inevitably existing system and estima... Read More about Robust model-based fault estimation and fault-tolerant control : towards an integration.

Optimization of active muscle force-length models using least squares curve fitting (2015)
Journal Article
Hou, M., & Mohammed, G. A. (2015). Optimization of active muscle force-length models using least squares curve fitting. IEEE transactions on bio-medical engineering / Bio-medical Engineering Group, 63(3), 630-635. https://doi.org/10.1109/TBME.2015.2467169

The objective of this paper is to propose an asymmetric Gaussian function as an alternative to the existing active force-length models, and to optimize this model along with several other existing models by using the least squares curve fitting metho... Read More about Optimization of active muscle force-length models using least squares curve fitting.

Modelling of the human quiet stance with ankle joint complexity (2014)
Thesis
Ganguly, A. (2014). Modelling of the human quiet stance with ankle joint complexity. (Thesis). University of Hull. Retrieved from https://hull-repository.worktribe.com/output/4217159

This study derives an inverted pendulum model for quiet stance in humans around the ankle joints with 4×9-element mass-spring-damper (MSD) units as the musculoskeletal connections between the shank and foot bilaterally. The model focuses on the role... Read More about Modelling of the human quiet stance with ankle joint complexity.

Predictive control approaches to fault tolerant control of wind turbines (2014)
Thesis
Feng, X. (2014). Predictive control approaches to fault tolerant control of wind turbines. (Thesis). University of Hull. Retrieved from https://hull-repository.worktribe.com/output/4216343

This thesis focuses on active fault tolerant control (AFTC) of wind turbine systems. Faults in wind turbine systems can be in the form of sensor faults, actuator faults, or component faults. These faults can occur in different locations, such as the... Read More about Predictive control approaches to fault tolerant control of wind turbines.

Observer based active fault tolerant control of descriptor systems (2013)
Thesis
Shi, F. (2013). Observer based active fault tolerant control of descriptor systems. (Thesis). University of Hull. Retrieved from https://hull-repository.worktribe.com/output/4214916

The active fault tolerant control (AFTC) uses the information provided by fault detection and fault diagnosis (FDD) or fault estimation (FE) systems offering an opportunity to improve the safety, reliability and survivability for complex modern syste... Read More about Observer based active fault tolerant control of descriptor systems.

Real-time detection of auditory : steady-state brainstem potentials evoked by auditory stimuli (2010)
Thesis
Cheah, L. A. (2010). Real-time detection of auditory : steady-state brainstem potentials evoked by auditory stimuli. (Thesis). University of Hull. Retrieved from https://hull-repository.worktribe.com/output/4209793

The auditory steady-state response (ASSR) is advantageous against other hearing techniques because of its capability in providing objective and frequency specific information. The objectives are to reduce the lengthy test duration, and improve the si... Read More about Real-time detection of auditory : steady-state brainstem potentials evoked by auditory stimuli.

Dissertation review on a new control perspective on phase locked loops (2009)
Thesis
Tanuku, S. (2009). Dissertation review on a new control perspective on phase locked loops. (Thesis). University of Hull. Retrieved from https://hull-repository.worktribe.com/output/4209174

The technique of phase-locked loop (PLL), an essential means for online frequency detection of incoming signal, which is widely used in our modern day communication system. PLL is traditionally viewed as a non-linear feedback control loop that will a... Read More about Dissertation review on a new control perspective on phase locked loops.

Estimation of rotor flux of an induction machine (2009)
Thesis
Shananwaz, M. (2009). Estimation of rotor flux of an induction machine. (Thesis). University of Hull. Retrieved from https://hull-repository.worktribe.com/output/4209178

The objective of this dissertation is to estimate rotor flux of an IM. Some of the material is focused on the functional block of the IM i.e. Torque estimator, Speed estimator etc. while a subsequent part deals with estimation of rotor flux. The diss... Read More about Estimation of rotor flux of an induction machine.

On natural frequencies and eigenmodes of a linear vibration system (2007)
Journal Article
Müller, P. C., & Hou, M. (2007). On natural frequencies and eigenmodes of a linear vibration system. ZAMM, 87(5), 348-351. https://doi.org/10.1002/zamm.200610319

For conservative linear chain-structured mass-spring vibration systems with n degrees of freedom, the conjecture of Mikota [1] on the natural frequencies is verified. In addition, the eigenvalue/eigenvector problem of a related square root matrix is... Read More about On natural frequencies and eigenmodes of a linear vibration system.

Estimation of sinusoidal frequencies and amplitudes using adaptive identifier and observer (2007)
Journal Article
Hou, M. (2007). Estimation of sinusoidal frequencies and amplitudes using adaptive identifier and observer. IEEE transactions on automatic control, 52(3), 493-499. https://doi.org/10.1109/TAC.2006.890389

A simple method is proposed for estimation of amplitudes of multiple sinusoids. The estimation is based on the existing adaptive identifier which offers the globally convergent estimate of sinusoidal frequencies. To deal with possible singularities o... Read More about Estimation of sinusoidal frequencies and amplitudes using adaptive identifier and observer.

Neural observer by coordinate transformation (2005)
Journal Article
Delgado, A., Hou, M., & Kambhampati, C. (2005). Neural observer by coordinate transformation. IEE Proceedings Control Theory and Applications, 152(6), 698-706. https://doi.org/10.1049/ip-cta%3A20045069

Nonlinear control affine systems with maximum relative degree and a class of nonlinear differential equations can be transformed into a state representation known as the normal form. Based on the normal form an observer is designed using neural netwo... Read More about Neural observer by coordinate transformation.

Amplitude and frequency estimator of a sinusoid (2005)
Journal Article
Hou, M. (2005). Amplitude and frequency estimator of a sinusoid. IEEE transactions on automatic control, 50(6), 855-858. https://doi.org/10.1109/TAC.2005.849244

A dynamic estimator with global convergence property is proposed to simultaneously reconstruct the unknown values of the amplitude, frequency, and offset of a sinusoidal signal which is measured. Several versions of the estimator along with illustrat... Read More about Amplitude and frequency estimator of a sinusoid.

Observing a three-tank system (2005)
Journal Article
Hou, M., Xiong, Y., & Patton, R. (2005). Observing a three-tank system. IEEE Transactions on Control Systems Technology, 13(3), 478-484. https://doi.org/10.1109/TCST.2004.839578

Observability analysis and observer synthesis are studied for a three-tank water process. Observability of the process is considered under various assumptions on measurements. The observer design takes into account singularity of nonlinear observers.... Read More about Observing a three-tank system.

Controllability and elimination of impulsive modes in descriptor systems (2004)
Journal Article
Hou, M. (2004). Controllability and elimination of impulsive modes in descriptor systems. IEEE transactions on automatic control, 49(10), 1723-1729. https://doi.org/10.1109/TAC.2004.835392

As a refined notion, impulsive-mode controllability is suggested for the general class of linear continuous descriptor systems. This notion reveals rich properties of the general descriptor systems in terms of admissibility of initial conditions, adm... Read More about Controllability and elimination of impulsive modes in descriptor systems.