Journal ArticleDOI
Non-linear design for cost of feedback reduction in systems with large parameter uncertainty †
Isaac Horowitz,Patrick Rosenbaum +1 more
TLDR
In this paper, a non-linear first-order reset element (FORE) is used to reduce the feedback loop transmission bandwidth of linear, minimum-phase plants with large parameter uncertainty.Abstract:
Feedback systems containing linear, minimum-phase plants with large parameter uncertainty may be designed to achieve specified performance tolerances over the entire range of parameter uncertainty. The principal ‘cost of feedback’ is in the feedback loop bandwidth, which is generally much larger than that of the system as a whole. This makes the system very sensitive to sensor noise and high-frequency parasitics. It is shown how a non-linear ‘first-order reset element’ (FORE) may be used to drastically decrease the feedback loop transmission bandwidth. One is logically led to FORE by simple, linear feedback frequency response concepts. The paper assumes that the primary design problem is to satisfy quantitative response tolerances to command inputs. However, disturbances at the plant are not neglected, but the specification on such disturbances is in the damping of the step response. An important feature of the non-linear design is that the system response to command inputs is almost exactly that of a lin...read more
Citations
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Proceedings ArticleDOI
An Overview on Hybrid Integrator-Gain Systems with applications to Wafer Scanners
TL;DR: An overview of the state of the art in hybrid integrator-gain systems analysis and design with applications to wafer scanners can be found in this article , where the authors provide an overview of HIGS controlled systems analysis.
Proceedings ArticleDOI
Performance analysis of wheel slip reset controller in brake systems
TL;DR: In this paper, a wheel slip reset controller based on a PI+CI controller is proposed to increase the friction between the tire and the road, while decreasing the braking distance in several road conditions while maintaining as far as possible appropriate driving characteristics.
Proceedings ArticleDOI
Tuning of Constant in gain Lead in phase (CgLp) Reset Controller using higher-order sinusoidal input describing function (HOSIDF)
TL;DR: In this article, the authors proposed a tuning guideline for CgLp compensators based on a recently developed method named higher-order sinusoidal input describing function (HOSIDF).
Journal ArticleDOI
An optimal robust design method for fractional‐order reset controller
TL;DR: In this article , the authors proposed a fractional-order reset controller for a second-order plus time delay plant, which gives the control system more phase margin over the base linear PI controller and is robust to loop gain variation.
Journal ArticleDOI
Reset-and-Hold Control of Systems With Time Delay
TL;DR: In this paper , a reset-and-hold strategy for first-order linear time invariant (LTI) plants with time delay is proposed, based on the proportional-integral plus Clegg integrator (PI+CI) controller.
References
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Book
Multiple-Input Describing Functions and Nonlinear System Design
TL;DR: The theory of automatic control has been advanced in important ways during recent years, particularly with respect to stability and optimal control, but these theories do not, however, lay to rest all questions of importance to the control engineer.
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Synthesis of feedback systems
TL;DR: Synthesis of feedback systems, Synthesis of Feedback Systems, this article, synthesis of feedback system, feedback system synthesis, feedback synthesis, synthesizing feedback systems, مرکز فناوری اطلاعات و اسلاز رسانی
Journal ArticleDOI
Synthesis of feedback systems with large plant ignorance for prescribed time-domain tolerances†
Isaac Horowitz,Marcel Sidi +1 more
TL;DR: The design procedure is quite transparent, providing the designer with the insight to make necessary tradeoffs, at every step in the design process, based on frequency response concepts.
Journal ArticleDOI
Synthesis of a non-linear feedback system with significant plant-ignorance for prescribed system tolerances†
K. R. Krishnan,Isaac Horowitz +1 more
TL;DR: In this article, the authors investigated the use of the nonlinear device known as the Clegg integrator in the design of a nonlinear feedback system, which minimizes the effect of white sensor noise on the input to the plant.
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Fundamental properties of reset control systems
Synthesis of a non-linear feedback system with significant plant-ignorance for prescribed system tolerances†
K. R. Krishnan,Isaac Horowitz +1 more