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# IEE Proceedings - Control Theory and Applications

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Displaying Results 1 - 9 of 9
• ### Adaptive hybrid control using a recurrent neural network for a linear synchronous motor servo-drive system

Publication Year: 2001, Page(s):156 - 168
Cited by:  Papers (19)
| | PDF (920 KB)

An adaptive hybrid control system using a recurrent neural network (RNN) is proposed to control a permanent magnet linear synchronous motor (PMLSM) servodrive system. First, a field-oriented mechanism is applied to formulate the dynamic equation of the PMLSM servodrive. Then, a hybrid control system is proposed to control the mover of the PMLSM servodrive for periodic motion. In the hybrid control... View full abstract»

• ### Exponential and BIBS stabilisation of one degree of freedom mechanical systems subject to single non-smooth impacts

Publication Year: 2001, Page(s):147 - 155
Cited by:  Papers (1)
| | PDF (672 KB)

The problem of exponential and bounded-input bounded-state (BIBS) stabilisation of one degree of freedom mechanical systems subject to single nonsmooth impacts, both elastic and inelastic (i.e. with coefficient of restitution e=1 and e∈[0, 1), respectively), is considered, under the assumption that the state variables of the system are measurable. To validate the proposed control law, both si... View full abstract»

• ### MIMO system invertibility and decoupling control strategies based on ANN αth-order inversion

Publication Year: 2001, Page(s):125 - 136
Cited by:  Papers (25)
| | PDF (876 KB)

The theory of inverse systems is studied. A sufficient invertibility condition for the MIMO nonlinear continuous system described by input-output differential equations is established and demonstrated, and then an analytical expression of the corresponding inverse system is given. To overcome the difficulty of the practical implementation of inverse systems, two kinds of ANN αth-order invers... View full abstract»

• ### Receding horizon output feedback control for linear systems with input saturation

Publication Year: 2001, Page(s):109 - 115
Cited by:  Papers (15)
| | PDF (496 KB)

A constrained receding horizon output feedback control method that is based on a state observer is suggested. The proposed method adopts the receding horizon dual-mode paradigm, which consists of an admissible invariant set' and free control moves'. Polyhedral admissible invariant sets of estimated state are derived, along with guaranteed bounds on state estimation errors. The guaranteed bounds ... View full abstract»

• ### Reactive parking control of nonholonomic vehicles via a fuzzy learning automaton

Publication Year: 2001, Page(s):169 - 179
Cited by:  Papers (4)
| | PDF (892 KB)

The paper presents an intelligent reactive controller, which is capable of performing automated parallel parking in a confined space slightly larger than the dimensions of the vehicle. This controller combines the features of fuzzy logic control and sliding-mode control and is modelled as a fuzzy learning automaton. Starting with a brief exposition of the principles of reactive learning and learni... View full abstract»

• ### Sensitivity models for nonlinear filters with application to recursive parameter estimation for nonlinear state-space models

Publication Year: 2001, Page(s):137 - 145
Cited by:  Papers (4)  |  Patents (6)
| | PDF (680 KB)

If a recursive prediction error method is applied for the parameter estimation of state-space models, a filter must be used as the predictor, resulting in an adaptive filtering problem. Whereas for linear systems the optimal linear filter, the Kalman filter, can be used, approximate nonlinear filters have to be employed for nonlinear systems. For the parameter estimation, the gradient of the predi... View full abstract»

• ### Discrete control for a computer hard disk by using a fractional order hold device

Publication Year: 2001, Page(s):117 - 124
| | PDF (564 KB)

It is well known that the type of hold circuit used in a digital control scheme critically influences the position of the discrete-time zeros. Most digital control systems use a zero-order hold (ZOH). Nevertheless, there are more convenient alternatives to the use of a ZOH signal reconstruction device in certain digital control problems. A fractional order hold (FROH) circuit is proposed in the pa... View full abstract»

• ### Design of feedback controllers for paraplegic standing

Publication Year: 2001, Page(s):97 - 108
Cited by:  Papers (4)
| | PDF (1128 KB)

The development, implementation and experimental evaluation of feedback systems for the control of the upright posture of paraplegic persons in standing is described. While the subject stands in a special apparatus, stabilising torque at the ankle joint is generated by electrical stimulation of the paralysed calf muscles of both legs using surface electrodes. This allows the subject to stand witho... View full abstract»

• ### Optimal tuning of PID controllers for integral and unstable processes

Publication Year: 2001, Page(s):180 - 184
Cited by:  Papers (31)
| | PDF (340 KB)

Tuning formulas for PID controllers applied to integral and unstable processes are presented. In particular, the controller parameters are determined, based on the process model, to minimise integral squared error performance criteria. Results have been obtained by means of genetic algorithms, in order to avoid local minima in the optimisation procedure. Both the set-point following and the load d... View full abstract»