Optimal Design of Passive Gravity Compensation System for Articulated Robots

2012 ◽  
Vol 36 (1) ◽  
pp. 103-108 ◽  
Author(s):  
Jin-Gyun Park ◽  
Jae-Young Lee ◽  
Sang-Hyun Kim ◽  
Sung-Rak Kim
2020 ◽  
Vol 167 ◽  
pp. 1-13
Author(s):  
Zhihua Zhao ◽  
Kangjia Fu ◽  
Meng Li ◽  
Jinyou Li ◽  
Yong Xiao

2017 ◽  
Vol 269 ◽  
pp. 256-260 ◽  
Author(s):  
Ye Jin ◽  
Rui Wu ◽  
Weiming Liu ◽  
Xianglong Tang

2021 ◽  
Vol 5 (4) ◽  
pp. 208-216
Author(s):  
A. V. Ivanov ◽  
S. A. Zommer

During the verification of the functioning of the transformed structures in ground conditions, it is necessary to minimize the effect of gravity in order to exclude the occurrence of additional loads on the hinge assemblies and opening mechanisms. To perform this task, when testing a transformable umbrella-type reflector, stands with an active gravity compensation system are used, in which the gravity compensation force is applied to each spoke of the reflector. However, when compensating for the gravity spokes of the reflector, the fixing point of the suspension cable does not coincide with the center of mass of the spoke, which leads to the appearance of additional moments of forces acting on the suspended structure. Therefore, as an object of research, a part of the reflector was considered, consisting of a spoke, with cords of a formforming structure attached to it and a mesh. A 3D model has been developed, using which the positions of the center of mass of the structure under consideration were determined in the key phases of the reflector opening. A computational analysis of the driving forces and moments acting on the structure in the process of disclosure is carried out. The degree of influence of the suspension point position on the inaccuracy of gravity compensation has been established. The results of the analysis presented in the article can be used as initial data for the development of an algorithm for the operation of an active gravity compensation system, which will be able to take into account the position of the suspension point and the center of mass of the structure relative to the axis of rotation of the spoke during the opening of the reflector, by changing the gravity compensation force.


2019 ◽  
Author(s):  
◽  
Yeji Lim

Essay 1: Motivating Salespeople to Enhance Selling Effectiveness: The Role and Optimal Design of Activity-Based Incentive Plans This paper provides a rationale and model for the use and optimal design of salesplus activity-based incentive plans that are quite common in sales management practice. So far, there is no theoretical research providing guidance on why and how to structure such mechanisms. To meet this need, I argue that the role of appropriate activity-based sales force incentives is to increase selling effectiveness just like the usual sales commissions are utilized for motivating higher selling effort. I conceptualize that enhanced selling effectiveness stems from greater thinking efforts in the preparation for as well as execution of customer sales calls, and appropriately selected activities induce such thinking efforts. By relaxing the assumption of fixed selling effectiveness that is present in all agency-theoretic sales force incentive models to date, and allowing for adaptable selling effectiveness and sales that are a function of both selling and thinking efforts, I derive and compare optimal sales plus activity-based incentive plans with only sales-based incentives. I establish the conditions under which the former multidimensional plans produce outcomes for both the firm and the salesperson that are superior, as well as provide guidance for their operational design in practice. Essay 2: Compensation Mechanism for Coordinating Inside and Outside Sales Forces To ensure cooperation between inside and outside salespeople of business-to-business (B2B) sales organizations I propose and analytically demonstrate the benefits of a new joint compensation system. This proposed new compensation system is designed to facilitate the exchange of well-qualified leads between inside and outside salespeople. The motivation for designing this new system is the Internet-induced fundamental changes in B2B buyers purchasing behavior from a reactive or sellerdriven to a proactive or buyer-driven approach. These trends have led to inside sales forces rising in importance and value relative to outside sales forces in B2B sales. However, they pose problems to B2B selling firms: 1) dissonance between inside and outside salespeople; 2) loss of potential customers as each sales group pursues those leads of most relevance to the group; and 3) increasing costs when each group passes on poorly qualified leads to the other group. To mitigate these problems, my proposed compensation mechanism ties each sales groups incentives to achievement against self-selected targets for leads to be passed on to the other group. In this research, I describe and investigate the impacts of properties of this compensation plan and also compare its impact on salespeoples utilities and earnings, and firms profits, with those of two other incentive mechanisms (i) A system that rewards salespeople for their own performance; and (ii) A system under which salespeople are partly rewarded for corporate performance but receive no extra incentive for exchanging leads. My simulation results show that the target-value compensation system is optimal for the firm and salespeople. More specifically, the target-value compensation system ensures that (1) salespeople of one group will endeavor to deliver well-qualified leads to the other side and (2) firms do not need to observe sales forces actions.


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