企业的感动执行研究

企业执行力低下是一个普遍问题,中国企业更是如此。当今,企业执行力是已经关系到企业战略构想能否实现,持续竞争优势能否有效保持,企业文化能否有效践行的重要问题。因此如何有效提升管理者和员工执行力是摆在企业面前的新课题。笔者籍此提出"感动执行"理念来解决当前的执行困惑。

用“全面管理”思想打造企业核心竞争力

打造企业核心竞争力的根本在于盘活人,麦当劳的核心竞争点在于人,而全面管理思想的精髓也在于此。"感动执行"作为一种柔性执行理念将助推全面管理的运行。本文提出用基于"感动执行"理念的全面管理思想来打造企业核心竞争力。

Theory and experiment of observer based magnetostrictive self-sensing actuator

Giant magnetostrictive actuators (GMAs) often work in a close-loop feedback system. This system needs independent sensors which may be difficult to be fixed, besides, excessive sensors may cause more unpredicted problems in a large system. This paper aims to develop a self-sensing GMA. An observer based on piezomagnetic equations is constructed to estimate the stress and strain of the magnetostrictive material. The observer based self-sensing approach depends on the facts that the magnetic field is controllable and that the magnetic induction is measurable. Aiming at the nonlinear hysteresis in magnetization, a hys- teresis compensation observer based on Preisach model is developed. Experiment verified the availability of the observer approach, and the hysteresis compensation observer has higher tracking precision than linear observer for dynamic force sensing.

District Policy---Social Practice Through Internal and External Discourses： How the Implementation of a Single Regional Political Instrument Is Perceived, Understood and Communicated

This paper focuses on how the implementation of a single regional political instrument is perceived, understood and communicated. Designed as a regional political instrument, the Norwegian Ministry of Transport and Communications started a pilot project： ＂Driver education as a part of upper secondary school in district Norway＂. The focal point in this paper is to explore how the professional participants understand and interpret the project as a regional political instrument in order to maintain the local community, identity and local belonging. The theoretical approach is based on Giddens＇s actor/structure theory, while the analysis based on discourse analysis, in the analysis we separated the arguments used in the professional discourse. We detected different categories of argument in the discourses among the professionals. In addition to the professional discourse, we became aware of a personal discourse. In both discourses the political instrument was perceived to be important in order to maintain the local community, create equality and maintain local identity and a sense of belonging.

Active structures integrated with wireless sensor and actuator networks： a bio-inspired control framework

One of the main problems in controlling the shape of active structures （AS） is to determine the actuations that drive the structure from the current state to the target state. Model-based methods such as stochastic search require a known type of load and relatively long computational time, which limits the practical use of AS in civil engineering. Moreover, additive errors may be produced because of the discrepancy between analytic models and real structures. To overcome these limitations, this paper presents a compound system called WAS, which combines AS with a wireless sensor and actuator network （WSAN）. A bio-inspired control framework imitating the activity of the nervous systems of animals is proposed for WAS. A typical example is tested for verification. In the example, a triangular tensegrity prism that aims to maintain its original height is integrated with a WSAN that consists of a central controller, three actuators, and three sensors. The result demonstrates the feasibility of the proposed concept and control framework in cases of unknown loads that include different types, distributions, magnitudes, and directions. The proposed control framework can also act as a supplementary means to improve the efficiency and accuracy of control frameworks based on a common stochastic search.

Placement optimization of actuator and sensor and decentralized adaptive fuzzy vibration control for large space intelligent truss structure

Large space truss structure is widely used in spacecrafts.The vibration of this kind of structure will cause some serious problems.For instance,it will disturb the work of the payloads which are supported on the truss,even worse,it will deactivate the spacecrafts.Therefore,it is highly in need of executing vibration control for large space truss structure.Large space intelligent truss system(LSITS) is not a normal truss structure but a complex truss system consisting of common rods and active rods,and there are at least one actuator and one sensor in each active rod.One of the key points in the vibration control for LSITS is the location assignment of actuators and sensors.The positions of actuators and sensors will directly determine the properties of the control system,such as stability,controllability,observability,etc.In this paper,placement optimization of actuators and sensors(POAS) and decentralized adaptive fuzzy control methods are presented to solve the vibration control problem.The electro-mechanical coupled equations of the active rod are established,and the optimization criterion which does not depend upon control methods is proposed.The optimal positions of actuators and sensors in LSITS are obtained by using genetic algorithm(GA).Furthermore,the decentralized adaptive fuzzy vibration controller is designed to control LSITS.The LSITS dynamic equations with considering those remaining modes are derived.The adaptive fuzzy control scheme is improved via sliding control method.One T-typed truss structure is taken as an example and a demonstration experiment is carried out.The experimental results show that the GA is reliable and valid for placement optimization of actuators and sensors,and the adaptive fuzzy controller can effectively suppress the vibration of LSITS without control spillovers and observation spillovers.