Conference Paper

# A comparative study of the new LQ-MCS control on an automotive electro-mechanical system

Univ. of Naples Federico II, Naples;

DOI: 10.1109/ISCAS.2008.4541477 Conference: IEEE International Symposium on Circuits and Systems (ISCAS 2008), At Seattle, WA, USA Source: DBLP

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**ABSTRACT:**The aim of this paper is to design, analyze, and validate via experiments the control of a double magnet electromechanical valve actuator (EMVA). Such actuators have shown to be a promising solution to actuate engine valves during normal engine cycle. Their use can increase engine power, reduce fuel consumption and pollutant emissions, and improve significantly engine efficiency. To this aim, this actuator needs to be properly controlled at the engine startup for the first valve lift (key-on control). Mathematically, the EMVA system can be described as a highly nonlinear piecewise-smooth mechanical oscillator. The proposed control law is based on an energy control approach. Bifurcation analysis of the closed-loop system is carried out to characterize the nonlinear dynamics of the valve and to tune the controller. The numerical and theoretical analysis is in good agreement with the experimental results.IEEE Transactions on Control Systems Technology 01/2012; · 2.52 Impact Factor -
##### Conference Paper: Experimental validation of a novel adaptive controller for piecewise affine systems.

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**ABSTRACT:**This paper presents the first digital implementation of a novel model reference adaptive scheme for the control of piecewise affine circuits and systems. The control law is implemented by using a low-cost commercial microcontroller. The aim is to control a piecewise-linear electrical circuit. The experimental validation process is made challenging by the presence of measure uncertainties, noise, quantization errors, unmodelled nonlinear dynamics, computational delays. Moreover, a digital microcontroller is used to implement an analogue continuous-time control law. Nevertheless, experiments confirm the effectiveness of the controller to cope with switching in the circuit dynamics, establishing the strategy as a viable control tool.International Symposium on Circuits and Systems (ISCAS 2010), May 30 - June 2, 2010, Paris, France; 01/2010 - [Show abstract] [Hide abstract]

**ABSTRACT:**This paper is concerned with the design of a novel adaptive controller, namely the linear quadratic new extended minimal control synthesis with integral action (LQ-NEMCSI). We present for the first time the analytical proof of asymptotic stability of the controller and experimental evidence of the algorithm effectiveness for controlling an electronic throttle body: an element of any drive-by-wire system in automotive engineering, affected by many nonlinear perturbations.IEEE Transactions on Control Systems Technology 12/2010; · 2.52 Impact Factor

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