US6339916B1 Method for constant speed control for ... An electric mower having constant speed control. The mower is powered by a battery and a controller connected to the electric motor. The controller monitors mower operation and ensures that a constant speed is maintained while mowing and transporting even on includes and declines. Method for constant speed control for electric greens ... Method for constant speed control for electric greens mower (PAT US6339916 ... An electric mower having constant speed control. The mower is powered by a battery and a controller connected to the electric motor. The controller monitors mower operation and ensures that a constant speed is maintained while mowing and transporting even on ... WO2019038852A1 Control method and control device for ... A control method for a continuously variable transmission comprising an oil pump, which is disposed in the oil passage between a primary oil chamber and a secondary oil chamber and controls the entry and exit of oil from the secondary oil chamber to the primary oil chamber, and an oil supply source for supplying oil to the secondary oil chamber, wherein a secondary oil pressure command value ... Method for constant speed control for electric greens ... An electric mower having constant speed control. The mower is powered by a battery and a controller connected to the electric motor. The controller monitors mower operation and ensures that a constant speed is maintained while mowing and transporting even on includes and declines. Patents Assigned to SNTech Inc. Justia Patents Search Justia Patents Patents and Patent Application Resources. Abstract: A method for transferring existing data from a source motor to a target motor includes retrieving the existing data from the source motor, optionally converting the existing data into a new format, and at least one of storing, erasing, writing, overwriting, or replacing software and or data on the target motor such that the ... US5256944A Motor speed control method and apparatus with ... A speed control method and apparatus for a motor driven by output of a power conversion unit, wherein a first current command value is inputted to derive a drooping variable, a deviation between a detected speed value of the motor and a speed command value is derived, the first current command value is derived on the basis of a value obtained by compensating the deviation with the drooping ... WO2018189896A1 Electric vehicle control device and ... 4) The control method of the electric vehicle of Example 1 is as follows: A continuously variable transmission CVT disposed between the motor generator MG for driving the vehicle and the left and right drive wheels RT and LT, and driven by the motor generator MG to supply oil to the continuously variable transmission CVT according to the ... US5261025A Method and apparatus for DC motor speed ... In a preferred embodiment, a high frequency, pulse width modulated, power transistor, DC motor speed controller having current limiting in both drive and regenerative modes, essentially constant ramping rates regardless of whether or not the operator switches to neutral before changing direction, a simple sequencer which controls the timing of four functions both drive and regenerative ... System and method of motor control General Electric pany The control approach of the present invention first brings the cinematic camera's motor up to half of the desired speed. This phase control system and method requires constant speeds during "cruising", so the present invention allows for a new speed control method to prevent speed overshoots at the conclusion of "rising" stages. US Patent Application for METHOD FOR CONTROLLING THE FUEL ... The user interface is, during normal operation, the bridge user board 4.1 using which a desired value that can be output, consumption or speed is set. The method for which a patent is sought is applied by calculating the correct engine speed in the control cabinet 4.2. of the system. The calculation is performed by an electronic control unit. Larry D. Best Inventions, Patents and Patent Applications ... Larry D. Best has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO). Method and system for determining induction motor speed ... DOE Patents Patent: Method and system for determining induction motor speed ... The control system generates a command signal to cause the PWM converter to control an output of the AC motor drive corresponding to an input to the AC motor,more ... constant speed electric motor system. Regenerative Brakes Patents and Patent Applications (Class ... Regenerative Brakes Patents (Class 303 152) ... A method controls regenerative braking of a motor vehicle provided with an electric or hybrid powertrain. The method includes determining that a driver is pressing neither a throttle pedal nor a brake pedal of the vehicle. ... A braking force control method that is applied to a vehicle in which ... METHOD AND APPARATUS FOR INCREASING ELECTRICAL POWER for the purpose, and in some instances to give a constant current output from a constant voltage input, for example, in inverted rotary converter provided to convert DC to A.C. However, the present invention is concerned with method and apparatus for increasing electrical power and provides a dynamo electric converter that operates METHOD OF CONTROLLING SPEED OF BRUSHLESS MOTOR OF CEILING ... If the speed reaches to the preset maximum speed first, a constant speed control will take over to control the brushless motor, and speeds of each level are according to the preset speeds. ... FIG. 5 is a flow chart of the control method of the preferred embodiment of the present invention. ... Previous Patent: PERMANENT MAGNET ROTATING ... US Patent for Hybrid vehicle Patent (Patent # 6,488,608 ... Justia Patents Electric Engine US Patent for Hybrid vehicle ... the motor running mode is also set automatically when the vehicle is steadily running on a flat road at substantially constant speed. This mode can be also set manually by shifting operation lever 18 to the side of the electric acceleration by the driver when the vehicle runs ... SERVO PUMP CONTROL SYSTEM AND METHOD EATON CORPORATION The servo pump control method according to claim 9, further comprising: receiving a constant speed command and directly or indirectly providing a third control signal to the electric motor by a speed controller so that the electric motor rotates with a constant speed; and identifying the elastic modulus based on the rotation speed of the ... CHAPTER 3 INDUCTION MOTOR AND DIFFERENT SPEED CONTROL METHODS INDUCTION MOTOR AND DIFFERENT SPEED CONTROL METHODS 3.1 Introduction This chapter describes the construction, principal of operation, start up consideration and the basic speed control methods for induction motor. 3.2 Three Phase Induction Motor (IM) The three phase induction motors are also called as asynchronous motors, which are Method and apparatus for increasing electrical power ALEX Method and apparatus for increasing electrical power . United States Patent 3913004 ... involving generally a rotor that revolves at substantially constant speed within a stator and which comprises a transformer core subjected to and having a primary motor transformer winding and a secondary transformer generator winding; whereby transformed ... Direct torque control Direct torque control (DTC) is one method used in variable frequency drives to control the torque (and thus finally the speed) of three phase AC electric motors.This involves calculating an estimate of the motor's magnetic flux and torque based on the measured voltage and current of the motor. US Patent # 3,938,015. SCR motor voltage controller ... SCR motor voltage controller Abstract. A voltage control circuit for a motor, such as a vehicle motor, energized from a battery. The circuit utilizes a commutating capacitor and a main pass SCR, and includes a separate capacitor charging circuit which always charges the capacitor to twice the unloaded battery voltage, the capacitor being charged whether or not the main pass SCR is on. List of Nikola Tesla patents Nikola Tesla was an inventor who obtained around 300 patents worldwide for his inventions.Some of Tesla's patents are not accounted for, and various sources have discovered some that have lain hidden in patent archives. There are a minimum of 278 patents issued to Tesla in 26 countries that have been accounted for. Many of Tesla's patents were in the United States, Britain, and Canada, but ... Adjustable Frequency Controllers Application Guide Adjustable Frequency Controllers Application Guide Product Data Bulletin SC100 R5 95 May, 1995. ... or usefulness of any and all text, data, formulas, calculation methods, charts or any other design aids or statements made herein, including their condition, conformity to any represen ... SPEED CONTROL RANGE & MOTOR HEATING US Patent # 5,414,793. Speed control mechanism for a power ... In one embodiment, the speed control mechanism is for use with the drive motor of the power tool to control the operating speed of the power tool. In an alternative embodiment, the speed control mechanism is used with a radial arm saw including an anti kick forward device. CPC Scheme United States Patent and Trademark Office Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network {(circuits for ... A method to derive MTPA control trajectory for xEV ... control objective, constant flux linkage control, maximum efficiency control, or maximum torque per ampere control (MTPA) can be implemented. In [1], a look up table (LUT) method of storing optimum operation points dependent on reference torque is proposed. A maximum torque to current ratio is derived for constant torque and constant Electric motor An electric motor is an electrical machine that converts electrical energy into mechanical energy.Most electric motors operate through the interaction between the motor's magnetic field and electric current in a wire winding to generate force in the form of rotation of a shaft. Electric motors can be powered by direct current (DC) sources, such as from batteries, motor vehicles or rectifiers ... Power control system for AC electric arc furnace US Patent Power control system for AC electric arc furnace Abstract. A power control system for an AC electric arc furnace. The control system includes variable reactors located intermediate a furnace power supply and arc electrodes that are height adjustable. Method and apparatus for electronic power control US Patent Method and apparatus for electronic power control Abstract. The method of the invention in one aspect involves electronic power control by varying the amplitude of an electrical power supply voltage, independent of frequency, whereby the output frequency will always be the same as the input frequency. V f CONTROL OF INDUCTION MOTOR DRIVE 1.3 V f Control of Induction Motor Drive: An Introduction There are various methods for the speed control of an Induction Motor. They are: i. Pole Changing ii. Variable Supply Frequency Control iii. Variable Supply Voltage Control iv. Variable Rotor Resistance Control v. V f Control vi. Slip Recovery vii. Vector Control George Constantinesco: Inertial Transmission (US Patent ... George Constantinesco was born in Romania and arrived in London in November 1910. By 1913 he had already applied for eighteen British Patents related to improvements in internal combustion engines and their ancillaries such as carburettors, fuels and transmission elements as well as early patents on methods of transmitting power by pulsating waves of energy through liquids.

patent us6339916 method for constant speed control for electric Gallery


patent us6339916

patent us6339916

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