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Keywords: feedforward
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Journal Articles
Publisher: ASME
Article Type: Technical Briefs
J. Dyn. Sys., Meas., Control. April 2015, 137(4): 044502.
Paper No: DS-12-1258
Published Online: April 1, 2015
... was further utilized to reduce the speed ripples in speed regulation applications. A combined feedforward and feedback configuration was used to reject the disturbance based on both the offline calculated disturbance and the online estimated disturbance. This scheme was successfully implemented in consumer...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Dyn. Sys., Meas., Control. March 2012, 134(2): 021003.
Published Online: December 29, 2011
...Florian Kock; Cornelius Ferrari This paper presents the design and implementation of a nonlinear feedforward control algorithm for a hydraulic actuator driven by a multistage servo valve. Combined with a conventional feedback control algorithm, high frequencies can be achieved even for large-scale...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Dyn. Sys., Meas., Control. November 2011, 133(6): 061004.
Published Online: September 29, 2011
... this map is employed in the feedforward loop to force the state of the plant to asymptotically converge to a prescribed state trajectory. The algorithm accomplishes this task without requiring prior exact information about the state transition map of the plant. The novel controller is applied...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Dyn. Sys., Meas., Control. July 2011, 133(4): 041001.
Published Online: April 6, 2011
... a vibrational disturbance with a known frequency. Next, we develop feedforward adaptive filter methods for cases when a reference signal, which is highly correlated with the jitter disturbance, is available. A filtered-X recursive least-squares algorithm with an integrated bias estimator is proposed to deal...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Dyn. Sys., Meas., Control. May 2011, 133(3): 031001.
Published Online: March 23, 2011
... feedforward FIR filters fuel systems mechanical variables control open loop systems Regulating the air-to-fuel ratio (AFR) of an internal combustion engine is a challenging control problem that relies heavily on experimental calibration. In recent years, the calibration burden has been reduced...
Journal Articles
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Dyn. Sys., Meas., Control. May 2010, 132(3): 031005.
Published Online: April 21, 2010
... matrices. The full-information problem is then extended to include the efficient implementation of the output-feedback controller. The synthesis of feedforward controllers with preview is analyzed as a special case—this problem is of interest to designers who wish to introduce preview as a separate part...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Dyn. Sys., Meas., Control. March 2010, 132(2): 021001.
Published Online: February 2, 2010
... of different control strategies. This paper verifies the performance of a new control strategy, which is called combined feedforward and feedback control with shaped input (CFFS), through a benchmark problem applied to a two-mass-spring system. CFFS, which consists of feedback and feedforward controllers...
Journal Articles
Publisher: ASME
Article Type: Dynamic Modeling Control And Manipulation At The Nanoscale
J. Dyn. Sys., Meas., Control. November 2009, 131(6): 061105.
Published Online: November 6, 2009
...Ying Wu; Qingze Zou This article presents an iterative-based feedforward-feedback control approach to achieve high-speed atomic force microscope (AFM) imaging. AFM-imaging requires precision positioning of the probe relative to the sample in all x - y - z axes directions. Particularly, this article...
Journal Articles
Publisher: ASME
Article Type: Dynamic Modeling Control And Manipulation At The Nanoscale
J. Dyn. Sys., Meas., Control. November 2009, 131(6): 061101.
Published Online: October 28, 2009
... and nanotechnologies. In particular, inversion-based control can find the feedforward input needed to account for the positioning dynamics and, thus, achieve the required precision and bandwidth. This article reviews inversion-based feedforward approaches used for high-speed SPMs such as optimal inversion...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Dyn. Sys., Meas., Control. September 2009, 131(5): 051012.
Published Online: August 19, 2009
... with a supplementary electromagnetic actuator located outside the rotor bearing span. Feedback and feedforward control system design are shown, and comparative experiments on two active vibration control methods for mass unbalance compensation are reported. The methods compared are adaptive FIR filter with the least...
Journal Articles
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Dyn. Sys., Meas., Control. September 2008, 130(5): 051003.
Published Online: August 1, 2008
... boundary, and a speed-controlled roller at the right boundary. The speed trajectory of the right roller is assumed periodic but unknown. A proportional and derivative (PD) feedback and iterative learning control (ILC) feedforward control law is developed for the left roller torque based on the measured...
Journal Articles
Publisher: ASME
Article Type: Technical Briefs
J. Dyn. Sys., Meas., Control. July 2008, 130(4): 044501.
Published Online: June 4, 2008
...-to-output loop, and the NMP zero could affect the feedback control design. 04 03 2005 03 02 2008 04 06 2008 control system synthesis exhaust systems feedback feedforward humidity humidity control proton exchange membrane fuel cells Polymer electrolyte membrane fuel cells...
Journal Articles
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Dyn. Sys., Meas., Control. May 2008, 130(3): 031002.
Published Online: April 9, 2008
... that combines feedforward and feedback control with command shaping for systems with collocated actuator and sensor. First, a feedback controller is designed to increase damping and eliminate steady-state error. Next, an appropriate reference profile is generated using command-shaping techniques to ensure fast...
Journal Articles
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J. Dyn. Sys., Meas., Control. November 2007, 129(6): 767–776.
Published Online: March 2, 2007
... criteria simultaneously is difficult because of resonances that are inherent to the underlying positioning systems. This paper presents an experimental study of a feedforward controller that was designed for a point-to-point motion control system on a modern and state of the art laser processing system...
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J. Dyn. Sys., Meas., Control. September 2006, 128(3): 499–509.
Published Online: August 17, 2005
...Matthew A. Franchek; Jackie Mohrfeld; Andy Osburn Presented in this paper is a feedforward fueling controller identification methodology for the transient fueling control of spark ignition (SI) engines. The hypothesis of this work is that the feedforward fueling control of SI engines can...
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J. Dyn. Sys., Meas., Control. June 2006, 128(2): 216–226.
Published Online: June 9, 2005
... operator forces in a controlled and tunable fashion. In this study, the ERF resistive-actuator analytical model is derived and experimentally verified and accurate closed loop torque control is experimentally achieved using a non-linear proportional integral controller with a feedforward loop. Artist’s...