253results about How to "Improve motor performance" patented technology

An integrated brushless DC motor and controller including a brushless DC motor having a rotating shaft with a 2 pole permanent magnet affixed to the shaft for rotation thereby in a plane orthogonal to the axis of rotation of the shaft. An X-Y Hall Effect Sensor is carried by a controller mounted on a circuit board attached to the motor and the Hall Effect Sensor is positioned proximate the magnet with the Hall Effect Sensor producing the Sine and Cosine components of the magnetic field as the magnet is rotated by the motor shaft. The electronic controller includes software for determining the motor angle and commutation logic from the Sine and Cosine components generated by the Hall Effect Sensor response to the rotating magnetic field. A controller on the board positioned over the rotating shaft contains the highly integrated functions of internal analog digital converters, pulse width modulation registers for driving the power amplifier, internal communication ports and all of the random excess memory and FLASH non-volatile memory that is typically required for motor control.

The present invention provides methods of improving cognitive and motor deficits associated with central nervous system (CNS) disorder or condition in an animal. The methods comprise a general administration of phosphodiesterase 4 inhibitors and optionally training the animal under conditions sufficient to produce an improvement in performance.

The present invention provides systems, apparatus and methods for applying electric current to neurons in the brain to treat disorders and to improve motor and / or memory functions in a patient. In a method according to the invention, an electrode is positioned adjacent to and spaced from the skin surface of the patient's head and an electric current is applied through the electrode to a target region in the brain to modulate one or more neurons in the target region. The electrode is housed within an enclosure and spaced from the skin surface so that the electrode does not directly contact the patient's tissue, which reduces the potential for collateral tissue damage or necrosis and shields the electrode from the patient's tissue which substantially inhibits Faradic products (e.g., H+, OH−, H2O2) of the electrode from reaching the target site.

A power tool having an electronically commutated DC motor capable of providing various operating modes ranging from a maximum efficiency operating mode to a maximum power operating mode. The motor has a rotor having permanent magnets mounted in recesses in a back iron of the rotor. In one embodiment the motor has three phase windings, each having at least a pair of coils. The phase windings are connected in either a delta or a wye configuration via electromechanical or electronic switching components, or a combination of both, by a controller within the tool. The coils in each phase winding can also be switched between series and parallel configurations to configure the motor to provide its various operating modes. In one embodiment a dual wound motor is disclosed that has its phase coils dynamically or statically switchable between series and parallel configurations.

The present invention provides systems, apparatus and methods for applying electric current to neurons in the brain to treat disorders and to improve motor and / or memory functions in a patient. In a method according to the invention, an electrode is positioned adjacent to and spaced from the skin surface of the patient's head and an electric current is applied through the electrode to a target region in the brain to modulate one or more neurons in the target region. The electrode is housed within an enclosure and spaced from the skin surface so that the electrode does not directly contact the patient's tissue, which reduces the potential for collateral tissue damage or necrosis and shields the electrode from the patient's tissue which substantially inhibits Faradic products (e.g., H+, OH−, H2O2) of the electrode from reaching the target site.

The present invention relates to a solid rocket motor control system that uses state of the art electrically ignited, extinguishable and throttleable propellants. In embodiments, the control system is implemented by a software algorithm embedded in missile flight controllers and contains all control system elements and control compensation that performs thrust control for many defense and space rocket motor applications, for example.

A treadmill roller structure comprises a motor, a gear set and a case. The motor is an out-runner motor. The power output section of the motor rotates about stationary spindle. The rotary power output section is engaged to the gear set, while the gear set is in turn engaged to the case, thus allowing the case to rotate relatively to the spindle of the motor as well. The roller structure does not require a driving belt to transfer power from the motor to the roller, thus reduces the power loss due to frictional force during power transfer through belt driving, which enhances the performance of the motor and offers a space-saving feature. In addition, the instant disclosure also provides a treadmill.

Systems and methods are described for improving the performance of electric motors which employ commutators and brushes. A method includes improving the performance of an electric motor that employs a commutator and brushes comprising: sending power to the motor, reading a set of data from the motor using an analog to digital converter and a microcontroller configured to execute digital signal processing software, setting a speed for the motor, and maintaining the speed for the motor based on the set of data as analyzed by the microcontroller. An apparatus includes a current sensing device coupled in series to the motor to monitor the current of the motor, a solid state switch coupled through the microcontroller to the current sensing device which controls the amount of current delivered to the motor, a high pass filter coupled to the current sensing device that removes the 60 Hz frequency component from the voltage of the current sensing device, an analog to digital converter that sends digital output to the microcontroller, and a microcontroller to perform digital signal processing coupled to the solid state switch.

A control method for a sensor-less, brushless, three-phase DC motor. A pulse-width modulation (PWM) duty cycle may be calculated. A voltage induced by rotation of a rotor may be sampled at a first expected zero crossing value to produce a first sampled voltage value. An average of a plurality of sampled voltage values, including voltage values sampled at a plurality of prior expected zero crossing values and the first sampled voltage value, may be calculated. The first sampled voltage value may be subtracted from the calculated average to produce a delta zero crossing error. The delta zero crossing error may be multiplied by a first constant representing electromechanical properties of the motor to produce a representation of an angular velocity. One or more time values may be generated based on the representation of the angular velocity. Operation of the motor may be controlled based on the one or more time values and the PWM duty cycle.

A reciprocating motor and a reciprocating compressor having the same make the manufacture of a stator easier and therefore reduce manufacturing costs by configuring the stator such that an inner stator positioned inside the mover and an outer stator positioned outside the mover are integrally formed, or by making the inner and outer circumferential surfaces of the stator have the same curvature. Also, no gap is generated between the inner stator and the outer stator, and this prevents magnetic leakage, thereby improving the performance of the motor. Also, the use of magnets can be reduced by omitting magnets between stator blocks, and therefore manufacturing costs can be reduced, when compared to the efficiency of the motor.

Provided are human alpha-synuclein-specific autoantibodies as well as fragments, derivatives and variants thereof as well as methods related thereto. Assays, kits, and solid supports related to antibodies specific for α-synuclein are also disclosed. The antibody, immunoglobulin chain(s), as well as binding fragments, derivatives and variants thereof can be used in pharmaceutical and diagnostic compositions for α-synuclein targeted immunotherapy and diagnosis, respectively.

A magnetically actuated reciprocating motor utilizes the stored energy of permanent magnets and an electromagnetic field to reciprocally drive a magnetic actuator. A converting mechanism converts the reciprocating motion of the magnetic actuator to power a work object. A solenoid, comprising a nonferromagnetic spool having a tubular center section with a coil of wire wrapped around the center section, is connected to a source of power and a switching mechanism. The magnetic actuator has permanent magnets disposed inside each end of an elongated tubular shaft, which is reciprocatively received through the center section of the solenoid. The inward ends of the magnets are disposed in spaced apart relation to form a gap therebetween. The switching mechanism switches the magnetic polarity at the ends of the solenoid so as to alternatively repel and attract the permanent magnets to reciprocate the magnetic actuator. A controlling mechanism controls the switching mechanism.

A method for manufacturing an interior permanent magnet motor is described herein. The method includes providing a plurality of permanent magnets and fabricating a ferromagnetic rotor core configured to accept the permanent magnets therein such that the ferromagnetic material utilized to retain the permanent magnets within the rotor core operates to concentrate and steer the flux from one or more of the permanent magnets to a stator tooth. The method also includes positioning the rotor core with the permanent magnets therein with respect to a wound, open slot stator core.

A control method for a brushless, three-phase DC motor. A voltage induced by rotation of a rotor may be sampled at a first expected zero crossing value to produce a first sampled voltage value. An average of a plurality of sampled voltage values, including voltage values sampled at a plurality of prior expected zero crossing values and the first sampled voltage value, may be calculated. The first sampled voltage value may be subtracted from the calculated average to produce a delta zero crossing error. A pulse-width modulation duty cycle may be adjusted based on the delta zero crossing error. The pulse-width modulation duty cycle may be used to control a rotational velocity of the rotor.

A DC motor 12, has a stator housing 16 accommodating a permanent magnet stator and a rotor 15 rotatably mounted confronting the stator. The rotor 15 has a shaft 21, a rotor core 22 fitted to the shaft and having laminations forming salient poles or teeth 27. A commutator 23 is fitted to the shaft adjacent one end of the rotor core and windings 24 are wound about the teeth and terminated on segments of the commutator 23. The windings is formed by a number of coils with each coil being wound around a single tooth of the rotor and each tooth supporting a single coil. Brush gear comprising a plurality of brushes 26 in sliding contact with the commutator 23, transfers electrical power to the windings.

There is provided a stepping motor comprising: a stator assembly; a rotor assembly rotatably disposed inside the stator assembly, and including a rotary shaft rotatably supported by bearings, a sleeve fixedly attached onto the rotary shaft, and at least one magnet disposed outside the sleeve; and a preloading mechanism disposed between the sleeve and one of the bearings, and including a coil spring, and a spring holder which is composed of an outer case shaped in a cup-like configuration and an inner case shaped in a cup-like configuration, and which is adapted to house the coil spring. In the stepping motor described above, the spring holder of the preloading mechanism is formed of reinforced polyamide resin, and a washer member having a high sliladability is disposed between the preloading mechanism and the one bearing.

The present invention provides a motor including a combustion chamber, an oxidizer injector, a vortex generators and a nozzle. The combustion chamber can be used to dispose a solid fuel, and the oxidizer injector is used to control the flow rate of an oxidizer and to inject the oxidizer into the combustion chamber. The vortex generators is disposed on the inner wall of the combustion chamber for generating eddies to enhance the mixing of the fuel and the oxidizer. Additionally, the nozzle is connected with the combustion chamber for exhausting the gas generated by the combustion of the propellants.

A motor mechanism of DC inverter-fed compressor is disclosed, wherein a motor rotor includes a first rotor layer, a second rotor layer and a third rotor layer, made up respectively of a plurality of rotor units stacked together. The rotor units have a shaft hole in the middle and have at least one magnet slot that install a permanent magnet at every quarter surface area of the rotor units. The rotor units of the first rotor layer have a plurality of first holes at one of the quarter areas thereon, and the rotor units of the third rotor layer have a plurality of third holes, which are set up at an area opposing the first holes. The present invention can reduce the height of the compressor, the costs of parts and assembly, and increase the total efficiency of the motor and the compressor.

A mounting structure for slot paper in a motor stator. The slot paper is embedded in stator slots and includes a paper bottom, a paper side, and a paper front. A lug boss is protruded between two adjacent tooth block segments and protrudes from the inner wall of an outer ring. Two ends of the slot paper extend out of each stator slot. Two ends of the paper bottom are locked between the lug bosses respectively arranged on the upper end insulator and the lower end insulator. One end of each tooth block segment is provided with a clip slot and the paper front near the opening is embedded therein. The structure is simple, has a precise slot paper positioning function, does not occupy space of the stator slot, maximizes the slot filling ratio of the slots, and thus improves the overall performance of the motor.

In a control unit for a robot, an inverter which drives a motor installed in a robot. A control circuit controls drive of the motor. A drive power circuit supplies DC power to the motor, and a control power circuit DC power to the control circuit. A backup power circuit supplies backup DC power to the control circuit when the DC power from the control power circuit to the control circuit is shut down. A first switch is arranged between the backup power circuit and the inverter, the first switch being selectively switched on and off to open and close. A first switch control section switches on the first switch such that the DC power in the backup power circuit is supplementarily supplied to the inverter when the motor is driven to be accelerated.

Provided are human alpha-synuclein-specific autoantibodies as well as fragments, derivatives and variants thereof as well as methods related thereto. Assays, kits, and solid supports related to antibodies specific for α-synuclein are also disclosed. The antibody, immunoglobulin chain(s), as well as binding fragments, derivatives and variants thereof can be used in pharmaceutical and diagnostic compositions for α-synuclein targeted immunotherapy and diagnosis, respectively.

The present invention discloses a motor. A rotor and bearings are installed first and then copper wires are wrapped by a machine. Therefore, the copper wires wrapped are denser and thinner that a space filling factor is improved and an entire size of the motor is reduced. In addition to saving of electricity consumption and improvement of motor performance, the bearings are directly enclosed in two insulation plates to isolate from ambient environment, so that dust contamination can be reduced and noise from operation can be decreased, thereby extending a service life of the motor. Furthermore, packing and transportation costs can be even saved. Additionally, the insulation plates include plural insertion slots for insertion with copper plates which are electrically connected with a motor power cord. Thus, an inner stator can be connected with the power cord by plugging, so as to save labor work and time.

The invention discloses a cable cross section measuring instrument with high measuring precision, which comprises a clamping part for placing a cable horizontally. The upper side and the lower side of the clamping part are provided with a first measuring mechanism and a second measuring mechanism; the clamping part has a V-shaped cross section and is formed by a first side plate and a second side plate arranged symmetrically, and the top parts of the first side plate and the second side plate form a cable placing port; the first measuring mechanism comprises a supporting plate with one end hinged with the upper end of the first side plate, the other end of the supporting plate is buckled on the upper end of the second side plate, the middle part of the supporting plate is provided with a vertical first through hole, and the first through hole is internally provided with a first vertical rod; the second measuring mechanism comprises a second through hole arranged below the clamping part, and the second through hole is internally provided with a second vertical rod; and axes of the first through hole and the second through hole coincide with the symmetrical shaft of the first side plate and the second side plate. According to the cable cross section measuring instrument, the measuring precision is high, the cable diameter can be quickly measured, the cable cross section is thus acquired, the type can be judged conveniently, and the functional check efficiency is improved.

The invention provides a valve rod sealing type closed backpressure adjusting type steam security valve which comprises a valve seat, a valve body and a valve cover. An inlet in the lower portion of the valve body is connected with a protected pressure system through a flange, the valve cover is arranged on the upper portion of the valve body, a valve bonnet is arranged above the valve cover, a spring is arranged inside the valve cover, the valve rod and a clamping ring penetrate through a pressing ring, the pressing ring and the clamping ring form a sealing structure, and a lower adjusting ring and an upper adjusting ring are arranged inside the valve body. The valve rod sealing type closed backpressure adjusting type steam security valve has good valve seat sealing performance, motion performance and adjusting performance on the working condition of high temperature and high pressure steam, and does not pollute the external environment. The design of the valve rod sealing type structure, the closed valve body and the closed backpressure adjusting mechanism meets the requirement of minimal overpressure performance parameters, avoids medium leakage, and meets the actual demands of energy conservation, emission reduction and environmental protection.

Assembly precision in a motor is improved and greater cost reduction is achieved. A fluid dynamic bearing apparatus 1 comprising a housing 7 and bearing sleeve 8 as fixed-side members 2, a shaft member 9 as a rotational-side member 3 having a portion 3c for mounting a rotor magnet 5, and a disk hub 10, the shaft member 9 being supported by the bearing sleeve 8 in the radial direction in a non-contact manner by the hydrodynamic effect of a lubricating oil produced in a radial bearing gap between the inner circumferential surface 8a of the bearing sleeve 8 and the outer circumferential surface 9a of the shaft member while the shaft member 9 is in rotation, the apparatus 1 comprising a disk hub 10 which is fixed on the shaft member 9 and has a portion 3c for mounting the rotor magnet 5, and the disk hub 10 being a molded resin article formed by insert-molding using the shaft member 9 as an insert piece.