Magnetic levitation (maglev) planar motor has broad application prospect because of its excellent performance in many aspects. In this article, a 6-DOF extended unified wrench model (6-DOF EUWM) is proposed to describe the maglev more accurately with low computational consumption for real-time calculations. The EUWM can express on coil arbitrary coil–magnet configuration analytically as function displacement, and does not require simplified modeling. Specifically, rotational magnetic flux...

This paper proposes a novel cluster-tube self-adaptive robot hand (CTSA Hand). The CTSA Hand consists of base, motor, transmission mechanism, multiple elastic tendons, and group sliding-tube assemblies. Each assembly is composed sliding tube, guide rod, two springs hinge. When the grasping an object, object pushes some tubes to different positions according surface shape motor pulls tendons tight cluster tubes. can realize objects sizes shapes. grasp simultaneously because acts as many...

This paper proposes a soft robot hand with pin-array structure and self-adaptive function, CTSA-II hand, where CTSA is the Cluster tube self-adaption. The designed quite concise consists of bases, pin array, spring membrane. When grasps an object, pins will slide along trajectory to conform profile object under reaction force applied by thus outer membrane form specific shape, then vacuum drives grasp object. Theoretical analysis shows that can generate enough grasping get good stability....

This paper presents a scheme of hybrid modeling an integrated motor-transmission powertrain, which is increasingly applied to electric vehicles. The shift process this system special due the absence clutch, and mode switch propulsion motor increases characteristics. After introduction definition automaton analysis process, gearbox are developed. Properties under different states conditions presented in detail. Then completed powertrain proposed describe all possible actions. Simulation...

An integrated powertrain with electric motor and multi-gearbox is a suitable choice for the propulsion of bus due to its low cost improved performance. But it also causes some problems in control without damping components. This paper presents scheme shifting. Based on detailed analysis shifting process, requirements are provided whole process divided into four phases. Then developed, sliding mode-based direct torque space vector modulation (DTC-SVM) adopted ensure fast response good system...

Advanced service robots and flexible production lines demand more versatile grippers than conventional ones. The traditional industrial gripper with two set of pin arrays fails to grasp some objects. This paper presented a novel universal concentric rotation array, CRPA gripper. It is capable grasping various objects only one actuator, which drives sets multiple rings rotate at opposite directions. Analytical model force transmission built. Simulation results verify the feasibility design. A...

The influence of preheating adopted and unadopted on manufacturing speed during the automated fiber placement process has been analyzed. According to Fourier heat equation assuming towpreg with uniform material properties, a transfer model established. boundary conditions initial this at different stages have given based energy exchange principle. research chooses thermoplastic composite APC-2(carbon/PEEK) as utilizes finite element method investigate temperature history process. Since is...

The numerical control (NC) program files need re-generating if there is any tool dimension change or wear for multi-axis machining. If the replaced to adapt this will be increased cost. To solute problem, 3D cutter radius compensation method 5-axis computer (CNC) machining deeply researched. Taking five axes linkage machine tools of X, Y, Z, B, C form with rotary tables B and as an example, coordinate transformation matrix (CTM) vector are derived. discrimination methods path joint pattern...

This paper presents a novel controller design for permanent magnet synchronous motor in plug-in hybrid electric vehicle using DTC-SVM (Direct Torque Control-Space Vector Modulation) technique with sliding mode controllers. In order to adapt complicated driving environment and improve the robustness of system, PI-based torque-load angle speed controllers traditional control scheme are replaced by The stability proposed system analyzed. A computer simulation model is developed verify...

This paper presents a sliding mode controller design for permanent magnet synchronous motor used in an integrated powertrain plug-in electric and hybrid vehicles. In order to adapt complicated driving environment improve the robustness of system, mode-based torque is developed. At same time, speed also proposed meet need gear shift powertrain. The stability controllers are analysed. Computer simulations performed verify effectiveness control system. simulation results illustrate that fast...

To achieve ideal tracking motion performance for industrial stages, cascaded iterative learning control (CILC) strategy is deeply explored and investigated in this paper. CILC essentially based on executing traditional ILC several rounds. Specifically, executes a new round of by registering clearing the feedforward compensation signal. The accuracy have been presented analyzed. theoretical analysis shows that repetitive error can be eliminated completely regardless imperfection filters....

This paper proposes a novel parallel-pinching and enveloping robot hand. The finger consists of base, proximal phalanx, distal two links, motor, worm, worm gear, driving gear set, driven gears torsion springs. hand has modes grasping, one is the mode implemented through four-bar linkage mechanism, another self-adaptive mechanism. Theoretical analysis shows that can perform large grasping forces within certain range angles. Experimental results show achieve kinds well it reliable in grasping.

For the inherent problem that traditional robotic hand with a pin-array structure cannot grasp an object without support surface. This paper proposes solution combines CTSA-II gripper underactuated multi-fingered hand. can solve of and enhance crawling performance Based on this scheme previous research work, presents design CTSA-PS finger in detail. The is simple easy to assemble. analyzes grasping possibilities finger, including gripping force analysis unit five-bar for parallel...

Automatic tape laying is a widely-used fabricating process for fiber-reinforced composite materials in aerospace and aviation industry. To fulfill the process, it necessary to cut prepreg into designated shape accurately promptly. In this paper, scheme of ultrasonic cutting bench put forward investigate parameters process. The functional requirements are analyzed key components bench, such as transverse feed mechanism cutter, revolving gear precision positioning depth, presented detail,...

The coming of big data has brought opportunities and challenges to competitive intelligence. This paper sums up the research status intelligence in era on basis existing practice, analyzes innovation development service, applications field intelligence, growing trend data, that brings information industry through method literature analysis. At last, it puts forward impact

Based on the principle of axial active magnetic bearing rotor-system with single degree freedom, vibration mode was described. A 3D finite element model established by ANSYS11. Initial six order natural frequencies and were calculated module modal analysis ANSYS11, compared results system identification. Analysis shows that there a certain difference between results, but small. The result indicates it is an effective method to apply FEA in design bearing. It provided foundation for structure...

Currently machine tools and strategies researched in micro-milling field universally cannot be applied to 3D meso-scale parts machining directly, so great importance should attached the research on 5-axis suitable for machining. This paper introduced a self-made tool several which were applicable Using these strategies, mini impeller was successfully machined developed independently. The experiment result showed parts.

This paper proposes a novel cluster-tube self-adaptive robot hand (CTSA Hand). The CTSA Hand consists of base, motor, transmission mechanism, multiple elastic tendons, and group sliding-tube assemblies. Each assembly is composed sliding tube, guide rod, two springs hinge. When the grasping an object, object pushes some tubes to different positions according surface shape motor pulls tendons tight cluster tubes. can realize objects sizes shapes. grasp simultaneously because acts as many...

Doffing robot is an important part of the spinning process in textile production. This paper analyzes doffing machines and points out requirements structure functions doffer. The locking two-finger gripper, three-dimensional circulating operation mechanism, collaborating locating mechanism with toothed disc pre-loosening by rotating spindles are designed. On this basis continuous vertical-pulling automatic robot, named CVP for ring developed. kinematics dynamics analysis carried out....

The fast and universal grasping of robotic hand is studied. A scheme changing active-driven to passive-driven proposed, which realizes cluster-tube self-adaptive (CTSA) robot hand. Based on this scheme, a CTSA with function (CTSA-FA hand) designed. CTSA-FA includes base, motor, cam sliding tube assembly. can achieve performance grasping. theoretical model established, some parameters are optimized. suitable for occasions that need grasping, also those

Based on defining the concept of enterprise competitive intelligence, fuzzy mathematics theory is used to evaluate intelligence competence small and medium sized enterprises.According evaluation factor for Small Medium Sized competence, paper choose corresponding technical index system, use this Fuzzy Comprehensive Evaluation method performance finally get result evaluation.Examples show that effective has good operability.

To improve production quality and reduce machining time, parameters need to be monitored adjusted automatically in milling. An integrated controller which is modular, configurable based on OMAC, established. The hardware platform, resultant cutting force constraint its fuzzy control rules have been introduced detail. In the designed, two inputs one output are used with five sets for controller, rate of feed-rate can changed from 50% 200%. This has abilities reducing fluctuation range force,...

Form grinding is one of the most efficient processes for finish machining gear wheels. This paper investigates method system development wheel modification involute cylindrical based on SINUMERIK 840D and its OEM package. The control software developed form applied to dress by using numerical dresser, normal projection adopted as calculate sectional shape wheel. friendly interface software, edited Visual Basic was meet needs users. Finally, personalized processing methods are integrated...