(1) Permanent Magnet Lifter is a kind of lifting gear.

(2) The hardware of permanent magnet AC servo system is designed, including system power main circuit, system control circuit and auxiliary circuit.

(3) In the subject, permanent magnet linear synchronous motor ( PMLSM ) servo system is a researched object.

(4) A double - voltage hybrid excitation earth rare permanent magnet synchronous generator is designed is this paper.

(5) Thus permanent magnet synchronous motor is widely regarded in Hybrid electric vehicle ( HEV ) control field.

(6) The permanent magnet meter can be used as an ammeter or a voltmeter.

(7) The utility model is composed of an annular permanent magnet (1), a magnetic conductive gasket (2), and a cooling tube, which are arranged in a circular column target pipe.

(8) Permanent magnet synchronous motor running from asynchronous start-up to pull-in synchronization is a very complex electromechanical transient process.

(9) China's permanent magnet material is very rich in China, especially the development of permanent magnet motor.

(10) The sensorless control methods of permanent magnet synchronous motor are mostly on - frequency signal injection or state - observer.

(11) The exact rotor position is required while a permanent magnet brushless servo motor (PMBSM) is under commutation and control. Howere, position sensors have some fatal defects.

(12) The D-axis armature reaction of rare earth permanent magnet synchronous generator has been analysed.

(13) A linear permanent magnet brushless DC motor ( LPMBDCM ) composed of an armature and stator was introduced.

(14) Because of good performance and space saving, gearless permanent magnet synchronous traction machine is more and more widely used to drive the elevator.

(15) A distinction between positive ( north ) and negative ( south ) magnetic poles of an electromagnet or permanent magnet.

(16) The microneedle is fabricated by MEMS technology with SU-8, and the permanent magnet array is fabricated by electroplating technology. Processes of these two technologies are introduced in detail.

(17) This paper presents a new converter control algorithm for the direct drive permanent magnet wind generator under the unbalanced three-phase source voltage.

(18) Due to stator resistance and armature reaction, the output voltage of conventional permanent magnet synchronous generator varies with the load.

(19) The superiority and inferiority of PM machine is closely related with the function parameter of permanent magnet material which is being used.

(20) At the first time a permanent excitation structure is used in the design of CPA. The inner magnetic field of CPA is simulated and fundamental dimension of permanent magnet material is optimized.

(21) It has not only the advantages of the ordinary permanent magnet starter motor, but also some other advantages, such as higher starting torque, higher no load speed, and lower cost.

(22) What the effects does low intensity constant magnetic field strapping and application with permanent magnet have on the growth of tumor in the inoculated animals?

(23) Close to the switching characteristics of the switch size is small, maximum detection distance. It can detect magnetic objects (usually permanent magnet), and then generate the output trigger switch.

(24) There are two causes or cogging force in linear permanent magnet motors, resulting from the slotting and the finite length of the iron-cored.

(25) The double-phase composite material of the aluminum alloy and the neodymium iron boron type rare earth permanent magnet material is prepared by using a powder metallurgy method.

(26) A simple and high - Performance brushless DC generator consisting of a controlled rectifying circuit and permanent magnet square wave motor is Presented.

(27) The hybrid magnet was made by combining electromagnet with permanent magnet ( PM ).

(28) The stator of motor adopts centralized winding and its rotor applies permanent magnet material. The constant speed can be achieved at a certain frequency of power supply.

(29) Position loop servo system with sliding mode controller, improved accuracy of position tracking servo system, to further improved the system of permanent magnet servo control performance.

(30) The system adopts 80C31 MCU as the main controller, hybrid Rare-Earth permanent magnet stepper motor as the execution component, bio-passage rotary transformer as antenna position sensor.

(31) The novel double-stator permanent magnet (PM) machine is compacted with fractional slot concentrated winding and double-stator PM machine.

(32) Confirming about the working point of the permanent magnet is an essential premise in calculating of the permanent magnetic circuit.

(33) The internal model of the permanent magnet synchronous motor (PMSM) is a high order complicate system with parameter variable, nonlinear, strong coupling and multivariable.

(34) Automatic nickel electroplating process and operating conditions of neodymium iron - boron permanent magnet were also set up.

(35) The accurate calculation of cogging torque assists in optimizing the design of claw pole permanent magnet synchronous motors.

(36) This thesis proposes a sensorless drive system a permanent magnet synchronous motor.

(37) Centreing around the permanent magnet synchronous motor, two parts of researches on the motor optimization design and the drive control are systematically introduced in this dissertation.

(38) This paper states the mechanism of mechanically alloying & its application in rare earth permanent magnet materials.

(39) The microneedle is fabricated by MEMS technology with SU-8, and the permanent magnet array is fabricated by electroplating technology.

(40) For reducing detent force of permanent magnet linear synchronous motors(PMLSM) resulting from slot effect and end effect.

(41) This paper discusses the control of output maximization of interior permanent magnet synchronous generators for variable-speed wind generation system.

(42) Subject to the five-phase permanent magnet synchronous motor control system for the study, research on the five-phase PMSM vector control theory, PWM control strategy, and fault-tolerant operation.

(43) Series 7143 features an extra strength permanent magnet pole-piece and high inductance coil.

(44) The air gap magnetic field characteristic of rare earth permanent magnet salient - pole synchronous generator is studied.

(45) The test methods of Nd-Fe-B permanent magnet material were described in detail and test results were analyzed.

(46) Cogging torque is one of the main concerns of permanent magnet motor.

(47) This paper presents a continuous method of measuring position(power angle)and velocity of the mover of the sectional permanent magnet linear synchronous motor(SPMLSM).

(48) According to the model of permanent magnet magnetic dipole, we have concluded the axial magnetic field distribution of square magnet and discussed the demagnetizing factor inside the magnet.

(49) The conclusion can be used to direct the design of electromagnetic relay with permanent magnet.

(50) A bar on horseshoe magnet is called a permanent magnet.

(51) Its application to permanent magnet direct current motor design expert system verifies its validity and effectiveness.

(52) Because of limited coercive force of permanent magnet, the non-reversible demagnetization of it must be prevented.

(53) The AC servo system for PMSM (permanent magnet synchronous motor) based on DSP (digital signal processor) is composed of TMS320F2812, peripheral interface circuit and the loop of power circuit.

(54) The package allows us to solve many kinds of problems such as magnetostatic field, eddy current field, permanent magnet field and the electromagnetic force of the magnet.

(55) The cylindrical permanent magnet inside micro-robot was equivalent to magnetic dipole. The magnetic orientation equation based on magnetic dipole model was established.

(56) The paper preresents a novel current regulation algorithm for Interior permanent magnet synchronous motor field - weakened region.

(57) Therefore, they are the most suitable permanent magnet material for making dc torque motors.

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(58) The gradient magnetic field generator is one V-shaped tank with V-opening magnetizer and permanent magnet or electromagnet embedded to the bottom.

(59) Due to the interaction between the permanent magnet and slotted armature lamination, there exists cogging torque in slotted permanent magnet motors, which may cause noise and vibration.

(60) A new on-line permanent magnet flux linkage identification method for PMSM is presented to reduce the negative influence caused by demagnetization or position feed-back error.

(61) Emphatically reviewed four systems of permanent magnet material:Al-Ni-Co magnet, ferrite magnet, rare-earth magnet and glue magnet.

(62) A new high power-density brushless permanent magnet traction motor with water-cooling stator frame as well as design guideline is presented.

(63) The success of such a unilateral permanent magnet builds a strong basis for some scientific research such as the construction of a unilateral MRI system with homogeneous magnetic field.

(64) Compared with other motors, Permanent Magnet Synchronous Motor (PMSM) has the advantages of low inertia, high torque-current ratio, low noise, no excitation loss.

(65) This paper has presented a module-cascaded system for multi-coil direct-drive permanent magnet wind generator system with high voltage output, eliminating the grid-side step-up transformer.

(66) The rare earth permanent magnet brushless DC square wave motor is a new type of motor.

(67) Ferrovanadium can be used as additive in smelting high-intensity-low-alloy steel, high speed steel, tool steel, stainless steel and permanent magnet.

(68) Compared with electromagnetic starting motor, permanent magnet starting has the characteristics of small volume, low weight, high efficiency and big ratio efficiency to weight.

(69) Based on instantaneous power analysis, an instantaneous power control method of permanent magnet synchronous machine(PMSM) is proposed in this paper.

(70) A calculation method based on the concept of "senary" is presented, to start up a contra-rotative rare earth permanent magnet brushless direct current motor (CR REPM BLDCM).

(71) The theory and characters of testing technology for permanent magnet material NdFeB have been introduced in detail.

(72) A novel mathematical model for a dual three - phase permanent magnet synchronous machine ( PMSM ) was proposed.

(73) Utilizing rare-earth permanent magnet materials with high coercive force results in substantially higher efficiency than their counterpart with brushes of the same size.

(74) Emphatically reviewed four systems of permanent magnet material : Al - Ni - Co magnet, ferrite magnet, rare - magnet and glue magnet.

(75) Utilization of the Nd-Fe-B permanent magnet in DC servomotor has resulted in improved efficiency and increased power-weight ratio, reduced time constant.

(76) Firstly, using finite element analysis to describe that cogging force was the main cause of force ripple in tubular permanent magnet linear motors.

(77) Because the dynamic character of PMA is affected by permanent magnet and exciting current, in this paper, new mathematic model and equation are established and the calculation result is analyzed.

(78) The construction and the operating principle of the axial split phase hybrid type permanent magnet stepper motor are analyzed.

(79) Doubly salient permanent magnet motor is a novel electromechanical controllable AC variable speed systems.

(80) Characterization of temperature stability of permanent magnet with magnetic temperature compensation alloy was discussed.

(81) Permanent magnet vehiele separators according to its clamping. there of the different structure, can be divided into the downstream type(), counter-current type and half counter-current type 3 kinds.

(82) Line - start permanent magnet synchronous machine has high efficiency and power factor.

(83) The structure and working principle of the permanent magnet mechanism are proposed.

(84) Magnetic Field Intensity, Magnetic Flux Density, Coercive Force, Vertical Axis Wind Turbine, NdFeB Rare-Earth Permanent Magnet.

(85) Initial design includes the design about contact system structural, electromagnetic system structural. Regarding permanent magnetism relay, the permanent magnet structural design must be considered.

(86) The operating conditions in a permanent magnet were analyzed to quantity the magnetic induction changes on the surface with an alternating magnetic field.

(87) The main factor is thrust ripple of permanent magnet liner synchronous motor.

(87) is a online sentence dictionary, on which you can find excellent sentences for a large number of words.

(88) In this paper the relationship of current with loss of surface permanent magnet synchronous motor (SPMSM) is achieved by considering the copper loss and iron loss.

(89) This paper introduced the process technology of resinoid diamond grinding wheel for grinding rare earth permanent magnet materials.

(90) To solve this problem, a new method (EMDES), i. e. the fuzzy case design method, is proposed in this paper and applied to permanent magnet direct current motor design expert system (PMDCMDES).

(91) And recommended simply the ductile Fe-Cr-Co system permanent magnet material, mid-hard magnet material, Mn-Al-C permanent magnet material and crystallite permanent magnet material.

(92) The effect of flux-insulation methods of pole-to-pole leakage factor of PMSM with rotor of Us permanent magnet are computed and analyzed, and some conclusions are given.

(93) Nanocomposite permanent magnet exhibits excellent magnetic properties combining high coercivity of permanent magnetic phase with high saturation magnetization of soft magnetic phase.

(94) Permanent magnet generator direct driven ( DPMG ) by wind - turbine becomes the tendency of wind power development.

(95) The dissertation proposes control technology of rare earth permanent magnet brushless motor ( BLDCM ) in railway switch.

(96) In recent years, in mainly related torque direct drive fields, the permanent magnet synchronous torque motor servo system shows a superior performance which the other systems can not be compared.

(97) The dissertation develops the rotating machine direct torque control into the linear machine control. And the control system of permanent magnet linear synchronous motor based on DSP is equipped also.

(98) Integrating electromotor and generator, a rare earth permanent magnet brushless direct current motor (REPM BLDCM) control system based on DSP in the HVC is studied.

(99) Highly experienced in permanent magnet carbon brush, commutator, and other critical motor component & material selection.

(100) Temperature drift of electromagnetic equilibrant transducer are analysed, the efficient compensation for the permanent magnet, the length and the resistance of the movable coil are introduced.

(101) The invention has the advantages that the nano permanent magnet material in the true sense is obtained, and the preparation method is simple.

(102) A shell of a magnetic rod is disclosed, which wraps a permanent magnet rod, and the outer surface of the shell is provided with a plurality of concave grooves.

(103) In a permanent magnet brushless motor, airgap field excited by a 2-pole magnet ring with parallel magnetisation is sinusoidal.

(104) It is composed of a taper shank cap, a hollow taper shank, an awl perch, an awl stem casing, a permanent magnet and screwdriver heads of different format dimensions.

(105) According to the working environment,(http:///permanent magnet.html) a reality structure scheme using permanent magnet adsorption and twin pedrail type structural cleaning robot is put forward.

(106) Automobile starting motor can be divided into electromagnetic starting and permanent magnet starting.

(107) The second method uses a small permanent magnet to hold normally open contacts together.

(108) Its main products: frozen rabbit, fast-frozen vegetables, caw, permanent magnetism oxygen loaf, ferric oxide of permanent magnet, and etc.

(109) The rare earth permanent magnet alloy with a high coercive force is disclosed.

(110) In this paper, the equivalent circuit of typical permanent magnet actuator is analyzed, and the excitation current wave is optimized under definite redundancy and demanded minimum impulse power.