...Soo Jeon It is well known that the positional proportional-integral-derivative (PID) control of a servo mechanism with stiction always leads to a limit cycle. Related to this fact, two basic questions have still remained unanswered. The first question is, if the limit cycle occurs, how large...

... corresponding to F f = F S − for t = t 1 . At this time, the pressure force curve goes out of the no restarting area which means that the pressures create a force greater than the stiction friction F S − , so the system moves. This phase...

.... Stelson. 17 June 2003 04 November 2003 11 03 2005 oil drilling drilling machines mining equipment drilling vibrations stiction torsion limit cycles parameter estimation In Sec. 2, the experimental drill-string setup is described. Next, the dynamic behavior...

... . Manuscript received by the ASME Dynamic Systems and Control Division December 10, 2003. Associate Editor: M. Goldfarb. 10 December 2003 03 12 2004 controllers machine control stiction sampled data systems DC motors stability robust control Coulomb friction inherent...

... friction, including stiction. The use of constant-gain pulse width control laws for precise positioning of structurally flexible plants subject to stiction and Coulomb friction is analyzed. It is shown that when the plant is a simple two-mass system subject to stiction and Coulomb friction, a position...

... friction, including stiction. A quantitative measure of the performance of a pulse width control system is introduced. Applications of this measure suggest that piecewise-linear-gain pulse width control laws will often provide better performance than constant-gain pulse width control laws. A method...