References of "Lewis, Christopher P"
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See detailA novel micromachined accelerometer capacitive interface
Kraft, Michael ULiege; Lewis, Christopher P.; Hesketh, Thomas G. et al

in Sensors and Actuators. A, Physical (1998), 68(1-3), 466--473

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See detailA digital pressure transducer
Lewis, Christopher P.; Hesketh, Thomas G.; Kraft, Michaël ULiege et al

in Transactions of the Institute of Measurement and Control (1998), 20(2), 98--102

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See detailClosed-loop silicon accelerometers
Kraft, Michaël ULiege; Lewis, Christopher P.; Hesketh, Thomas G.

in IEE Proceedings. Circuits, Devices and Systems (1998), 145(5), 325--331

The control-system structure and behaviour are considered for an analogue and a digital servo-accelerometer having a dynamic range from mg to several g (1g=9.81 ms<sup>-2</sup>), for use in low-frequency ... [more ▼]

The control-system structure and behaviour are considered for an analogue and a digital servo-accelerometer having a dynamic range from mg to several g (1g=9.81 ms<sup>-2</sup>), for use in low-frequency applications. The paper emphasises the derivation of mathematical models, which are presented together with simulated and test results obtained from the implementation of these strategies on a bulk-micromachined silicon sensing element employing capacitive signal pick-off. The digital device, which is based upon oversampling conversion, proved to have superior stability compared to the analogue accelerometer. Furthermore, it has the advantages of producing a direct digital output signal and an inherent self-test feature [less ▲]

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See detailSystem level simulation of a digital accelerometer
Kraft, Michaël ULiege; Lewis, Christopher P.

in Technical Proceedings of the 1998 International Conference on Modeling and Simulation of Microsystems : MSM 98 (1998)

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See detailControl system design study for a micromachined accelerometer
Kraft, Michaël ULiege; Lewis, Christopher P.; Hesketh, Thomas G.

in New trends in design of control systems 1997 : a proceedings volume from the 2nd IFAC workshop (1997)

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See detailA generic approach to closed loop, digital transducers
Kraft, Michaël ULiege; Lewis, Christopher P.

in Sensor 97 (1997)

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See detailA novel micromachined accelerometer capacitive interface
Kraft, Michaël ULiege; Lewis, Christopher P.; Hesketh, Thomas G. et al

in Proceedings Eurosensors XI (1997)

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See detailMathematical model for a micromachined accelerometer
Lewis, Christopher P.; Kraft, Michaël ULiege; Hesketh, Thomas G.

in Transactions of the Institute of Measurement and Control (1996), 18(2), 92--98

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See detailCharacterization and modelling of a micromachined accelerometer
Lewis, Christopher P.; Hesketh, Thomas G.; Kraft, Michaël ULiege

in Proceedings of the 12th International Conference on Systems Science (1996)

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See detailDevelopment of a digital accelerometer for low-frequency structural vibration measurement
Kraft, Michaël ULiege; Lewis, Christopher P.; Hesketh, Thomas G.

in The 1996 Sensor and Transducer Conference Proceedings (1996)

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See detailA low cost electric current transducer
Lewis, Christopher P.; Hesketh, Thomas G.; Kraft, Michaël ULiege

in Proceedings / 7th International Power Electronics \& Motion Control Conference (1996)

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See detailAn electric current transducer for industrial use
Lewis, Christopher P.; Hesketh, Thomas G.; Kraft, Michaël ULiege

in Proceedings of the 5th International Conference on Optimization of Electric and Electronic Equipments (1996)

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See detailSignal pick-off in micromachined accelerometers
Kraft, Michaël ULiege; Lewis, Christopher P.; Hesketh, Thomas G. et al

in Proceedings of the 5th International Conference on Optimization of Electric and Electronic Equipments (1996)

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See detailSimulation of a micromachined digital accelerometer in SIMULINK and PSPICE
Lewis, Christopher P.; Kraft, Michaël ULiege

in UKACC International Conference on Control '96 (1996)

The development of a mathematical model of a closed loop micromachined silicon accelerometer is a very important consideration in the design of such a transducer. The sensing element being used for this ... [more ▼]

The development of a mathematical model of a closed loop micromachined silicon accelerometer is a very important consideration in the design of such a transducer. The sensing element being used for this work consists of a seismic or proof mass which is suspended between two sensing electrodes forming two capacitors in series. The acceleration force acting on the sensing element will cause the proof mass to deflect from its rest position resulting in a differential change in capacitance proportional to the acceleration. A model is derived for a silicon micromachined accelerometer and as well as the control strategy to provide a closed loop operation with a direct digital output signal. The model has been implemented both in MATLAB with SIMULINK and the MicroSim Design Centre: (PSPICE for Windows). The simulation process models the dynamic performance of the sensing element itself, the control electronics and the effects introduced by the method of reset employing electrostatic forces. This joint approach of employing a high level simulator in the s domain and a much lower level electronic component simulator proved a useful design approach. [less ▲]

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See detailDevelopments in digital transducers for vehicle control and telemetric instrumentation
Lewis, Christopher P.; Kraft, Michaël ULiege; Hesketh, Thomas G.

in Intelligent autonomous vehicles 1995 (1995)

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See detailCharacterization and modelling of a digital micromachined accelerometer
Kraft, Michaël ULiege; Lewis, Christopher P.; Hesketh, Thomas G.

in ICSEng '96 - 11th International Conference on Systems Engineering (1995)

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See detailThe development of a digital accelerometer
Lewis, Christopher P.; Kraft, Michaël ULiege; Hesketh, Thomas G.

in Proceedings 27th ISATA - International Symposium on Automotive Technology and Automation (1994)

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