A saturated high gain control for a benchmark experiment

2000 ◽  
Author(s):  
Zongli Lin ◽  
C. Knospe
Keyword(s):  
Gain Control ◽  
High Gain ◽  
Benchmark Experiment ◽  
High Gain Control

scholarly journals High-gain control without identification: a survey

2008 ◽  
Vol 31 (1) ◽  
pp. 115-125 ◽  
Author(s):  
Achim Ilchmann ◽  
Eugene P. Ryan
Keyword(s):  
Gain Control ◽  
High Gain ◽  
High Gain Control

LQR for State-Bounded Structural Control

1996 ◽  
Vol 118 (1) ◽  
pp. 113-119 ◽  
Author(s):  
C.-H. Chuang ◽  
D.-N. Wu ◽  
Q. Wang
Keyword(s):  
Structural Control ◽  
Vibration Amplitude ◽  
Gain Control ◽  
Linear Quadratic Regulator ◽  
Matching Condition ◽  
High Gain ◽  
Time Instant ◽  
Linear Quadratic ◽  
Earthquake Excitation ◽  
High Gain Control

In order to prevent structural damages, it is more important to bound the vibration amplitude than to reduce the vibration energy. However, in the performance index for linear quadratic regulator (LQR), the instantaneous amplitude of vibration is not minimized. An ordinary LQR may have an unacceptable amplitude at some time instant but still have a good performance. In this paper, we have developed an LQR with adjustable gains to guarantee bounds on the vibration amplitude. For scalar systems, the weighting for control is switched between two values which give a low-gain control when the amplitude is inside the bound and a high-gain control when the amplitude is going to violate the given bound. For multivariable systems, by assuming a matching condition, a similar controller structure has been obtained. This controller is favored for application since the main structure of a common LQR is not changed; the additional high-gain control is required only if the vibration amplitude fails to stay inside the bound. We have applied this controller to a five-story building with active tendon controllers. The results show that the largest oscillation at the first story stays within a given bound when the building is subject to earthquake excitation.

scholarly journals A Hybrid Scheme Motion Controller by Sliding Mode and Two-Degree-of-Freedom Controls to Minimize the Chattering

2014 ◽  
Vol 2014 ◽  
pp. 1-10
Author(s):  
Chiu-Keng Lai
Keyword(s):  
Sliding Mode ◽  
Gain Control ◽  
High Gain ◽  
Degree Of Freedom ◽  
Servo Motor ◽  
Motion Controller ◽  
Point Control ◽  
High Gain Control ◽  
Point To Point ◽  
Two Degree Of Freedom

Sliding mode control (SMC) is rapped for the chattering due to high gain control. However, high gain control causes the system robust. For developing a system with robustness of SMC, a servo motor motion controller combining the two-degree-of-freedom (2DOF) system and SMC is proposed. The discussed motion type is point-to-point control with the constraint of trapezoid velocity profile. SMC is designed to guide the motor motion to follow a predefined trail, and the inner 2DOF system is used to compensate the deterioration due to the adoption of load observer. The proposed hybrid system is realized on a PC-based motion controller, and the validness is verified by simulation and experimental results.

Attitude and velocity high-gain control of a tilt-trirotor UAV

2017 ◽  
Author(s):  
Giacomo Canciello ◽  
Alberto Cavallo ◽  
Egidio D'Amato ◽  
Massimiliano Mattei
Keyword(s):  
Gain Control ◽  
High Gain ◽  
High Gain Control
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