Response Control of Structures With Hysteretic Restoring Force

1999 ◽  
Author(s):  
Daisuke Iba ◽  
Akira Sone
Keyword(s):  
Control System ◽  
Sliding Mode Control ◽  
Strong Earthquake ◽  
Control Method ◽  
Sliding Mode ◽  
Tuned Mass Damper ◽  
Restoring Force ◽  
Response Control ◽  
Mode Control ◽  
Mass Damper

Abstract Recently, in order to enhance the habitable amenities, passive and active control of structures subjected to weak earthquake and wind response by using tuned mass damper (TMD) has been proposed and has been applied. However, the ordinary tuned mass damper is difficult to control the response of structures under the strong earthquake. This paper deals with the response control of a structure by a tuned mass damper with lever and pendulum mechanism (LP-TMD) under the strong earthquake. We applied sliding mode control method to control the response of the four-degree-of-freedom structure with hysteretic restoring force, and we compared the performance of the sliding mode control system with that of the LQ control system.

Sliding Mode Control of Electronic Throttle Valve

2011 ◽  
Vol 58-60 ◽  
pp. 2505-2510 ◽  
Author(s):  
Rong Di Yuan ◽  
Quan Quan Du ◽  
Hui Zong Feng
Keyword(s):  
Control System ◽  
Lyapunov Function ◽  
Sliding Mode Control ◽  
Control Method ◽  
Sliding Mode ◽  
Good Control ◽  
Electronic Throttle ◽  
Mode Control ◽  
Control Robustness ◽  
Simulation And Experiment

Electronic throttle is a typical nonlinear device because of the nonlinear reset springs. Normal sliding mode control usually leads to chattering. To reduce chatters, a sliding mode control method based on compensation of nonlinearity is proposed, in which an observer is designed to observe and compensate the nonlinearity. A Lyapunov function was constructed to prove that control system is stable. Simulation and experiment results indicate that the proposed method can reduce chatters and achieve good control robustness.

The Sliding Mode Control for Traction Control System Based on Variable Optimal Slip Ratio

2013 ◽  
Vol 380-384 ◽  
pp. 485-490
Author(s):  
Jian Zhao ◽  
Jin Zhang ◽  
Bing Zhu
Keyword(s):  
Control System ◽  
Sliding Mode Control ◽  
Control Method ◽  
Sliding Mode ◽  
Road Surface ◽  
Information Measurement ◽  
Slip Ratio ◽  
Traction Control ◽  
Traction Control System ◽  
Mode Control

In this paper, the concept of intelligent tire and road surface information measurement methods are introduced, and the sliding mode algorithm for traction control system based on intelligent tire is proposed. By applying braking torque onto the driving wheels, the slip rates are adjusted to maintain within the optimal region on different road surface, and the optimal longitudinal traction is achieved. According to the simulation results on the CARSIM and MATLAB co-simulation platform of several working conditions, the TCS based on sliding mode control method improves the traction performance on different road surface effectively.

scholarly journals A New Variable Exponential Power Reaching Law of Complementary Terminal Sliding Mode Control

Complexity ◽  
2020 ◽  
Vol 2020 ◽  
pp. 1-11
Author(s):  
Feng Xu ◽  
Na An ◽  
Jianlin Mao ◽  
Shubo Yang
Keyword(s):  
Control System ◽  
Sliding Mode Control ◽  
Control Method ◽  
Sliding Mode ◽  
Terminal Sliding Mode Control ◽  
Sliding Surface ◽  
Terminal Sliding Mode ◽  
Reaching Law ◽  
Mode Control ◽  
Exponential Power

In this article, a new nonlinear algorithm based on the sliding mode control is developed for the ball and plate control system to improve dynamic response and steady-state tracking accuracy of the control system. First, a new sliding mode reaching law is proposed, variable exponential power reaching law (VEPRL), which is expressed in two different forms including a nonlinear combination function term and a variable exponential power term, so that it can be adjusted adaptively according to the state of the system by the variable exponential power reaching term during the reaching process. The computation results show that it can not only effectively weaken the chattering phenomenon but also increase the rate of the system state reaching to the sliding mode surface. Moreover, it has the characteristic of global finite-time convergence. Besides, a complementary terminal sliding mode control (CTSMC) method is designed by combining the integral terminal sliding surface with the complementary sliding surface to improve the convergence rate. Based on the proposed VEPRL and CTSMC, a new sliding mode control method for the ball and plate system is presented. Finally, simulation results show the superiority and effectiveness of the proposed control method.

scholarly journals Global robust super-twisting algorithm with adaptive switching gains for a hybrid robot

2020 ◽  
Vol 17 (5) ◽  
pp. 172988142092642
Author(s):  
Guoqin Gao ◽  
Songyun Zhang ◽  
Mengyang Ye
Keyword(s):  
Control System ◽  
Sliding Mode Control ◽  
Control Method ◽  
Sliding Mode ◽  
Prototype System ◽  
Mode Control ◽  
Global Robustness ◽  
Dynamic Sliding Mode Control ◽  
The Stability ◽  
Twisting Algorithm

To improve the robustness performance of dynamic sliding mode control to the time-varying uncertainties without the upper bound information in a hybrid robot system, a global robust super-twisting algorithm with adaptive switching gains is proposed. The main contributions are as follows: (1) for the problem that the robustness of the sliding mode control system is not guaranteed in the reaching phase, a global robust sliding surface is designed to eliminate the reaching phase of the sliding mode control; (2) for the chattering problem existing in the sliding phase of the sliding mode control system due to the conservative selection of switching gains, based on a reconstructive super-twisting sliding mode control and the equivalent principle, a fast-adaptive law is designed to effectively reduce the chattering while the global robustness is ensured. The stability of the proposed algorithm is proved by Lyapunov stability theorem. The simulation and experiment on the hybrid robot prototype system are implemented to verify the effectiveness of the proposed control method.

Sliding Mode Predictive Control Method for Attitude Control of Networked Launch Vehicle

2011 ◽  
Vol 467-469 ◽  
pp. 962-967
Author(s):  
Yu Chen ◽  
Guang Li ◽  
Chao Yang Dong ◽  
Qing Wang
Keyword(s):  
Control System ◽  
Sliding Mode Control ◽  
Predictive Control ◽  
Attitude Control ◽  
Control Method ◽  
Sliding Mode ◽  
Launch Vehicle ◽  
Uncertain Parameters ◽  
Attitude Control System ◽  
Mode Control

A novel adaptive fuzzy sliding mode predictive control (AFSMPC) method for solving the networked launch vehicle attitude control system with network-induced delay, uncertain parameters and outer disturbances is proposed in this paper for the attitude stabilization of the networked launch vehicle control system. The proposed sliding mode surface includes a predictor to compensate for the network-induced delay of the NCS. Then, for the networked Launch vehicle attitude control system with uncertain parameters and outer disturbances, a total sliding-mode control system is proposed, which is designed without the reaching phase of a conventional sliding-mode control. In order to attenuate the chattering phenomena brought by the proposed control, a fuzzy logic system is designed to mimic the good behavior of a total sliding-mode predictive control system. Finally, Simulation results show that the proposed control scheme is effective.

scholarly journals High-energy Orbit Sliding Mode Control for Nonlinear Energy Harvesting

2021 ◽  
Author(s):  
Ying Zhang ◽  
Changshun Ding ◽  
Jie Wang ◽  
Junyi Cao
Keyword(s):  
Energy Harvesting ◽  
Sliding Mode Control ◽  
Health Monitoring ◽  
Control Method ◽  
Sliding Mode ◽  
High Energy ◽  
Restoring Force ◽  
Mode Control ◽  
Solution Region ◽  
Energy Orbit

Abstract Vibration energy harvesting has extensive application prospects in many significant occasions, such as mechanical structure health monitoring, vehicle tire pressure monitoring, IoT devices and human health monitoring. The nonlinearity is an effective method to improve the energy harvesting efficiency where there are low- and high-energy orbits in the multi-solution region of the system. The harvested power will be increased significantly when the system is guided from the low-energy orbit to the high-energy orbit. However, previous research mainly focuses on the theoretical and numerical investigation of controlling strategy, but the feasibility of control methods has not been verified experimentally. This paper proposes a high-energy sliding mode control method through rotatable magnets actuated by micro-motor. The electromechanical model of mono-stable and bi-stable systems with the identified nonlinear restoring force is established to design a sliding mode control algorithm for enhancing the energy harvesting performance. Simulation and experiment results demonstrate that the rotatable magnets with sliding mode control have a positive influence on reaching the high-energy orbit for both mono-stable and bi-stable systems within the multi-solution region. Moreover, the rotatable magnets method with a sliding mode control actuates the small magnets in the system for a short time with little consumption of energy. This research has provided a practical application of high-energy orbit control for improvement of the energy harvesting.

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