130results about How to "Variable speed" patented technology

An intelligent treadmill is described with modifications to existing treadmills, and associated methodology. The invention allows the conveyor belt automatically keeps track of and fixes the user's position dynamically with respect to a stationery reference point of the treadmill by adjusting its own speed free hands. Two position measurement techniques and their corresponding belt speed control algorithms are described. Other features of the invention allow users to perceive in real time how their surroundings would be changing by means of video, incline of platform, fan speed, sound and illumination as if they were in fact running in the natural environment. Real time positions of the runner and his partners on other treadmills with respect to a chosen track are displayed. The invention also utilizes a vectored controlled 2 / 3-phase AC induction motor or a BLDC motor to drive the conveyor belt for energy efficiency and fast response.

An improved handheld electronic device and method provide an input apparatus having a number of input members, at least a portion of the input members being movable among an unactuated position, a first actuated position, and a second actuated position in order to provide input. The improved method of enabling input into the handheld electronic device includes detecting a first input from a first input member, responsive to the first input, performing a first navigational function, such as a scrolling operation, at a first speed, detecting a second input form the first input member and, responsive to the second input, performing the first navigational function at a second speed, the second speed being different (e.g., greater) than the first speed. The input apparatus may include a substantially sealable, resilient membrane with the input members being disposed on the resilient membrane in order to provide an improved, ruggedized input apparatus.

An unmanned bicycle realizing balance control during speed changing comprises a hardware structure and a control system. A brand-new speed-changing control system structure is designed by improving the hardware structure of the bicycle and additionally arranging a speed sensor, an angle sensor, a handlebar steering motor, a rear wheel drive motor, a brake motor and a controller. The control system comprises a steering controller module, a speed fusion and parameter switching module, a brake module and a protection module and can control steering of a handlebar of the bicycle, rotation of a rear wheel and the brake force according to the acquired body attitude of the bicycle and bicycle speed information, and accordingly, the balancing and steering functions of the bicycle are realized in the speed changing process.

An electric toothbrush comprises a brush part and a handle part which can be detached, wherein the brush part comprises a brush head and bristles, the handle part comprises a motor, and a transmission mechanism, an integrated circuit (IC) and a printed circuit board assembly (PCBA) which are connected with the motor, the PCBA comprises part of a power module, a detection module, a drive module, a control module, an indication module and a command module, the detection module comprise one or a plurality of voltage transducers, the characteristic that a direct current permanent magnetic micro-motor has different working currents under different loads is utilized, the voltage transducers respectively detect the voltage value in an operation state and the voltage value in an initial state that the brush head rotates but the bristles are not in contact with teeth to be brushed, the difference of the two voltage values is obtained, when the force which is applied to the brush head by a user is larger than a set value, the detection module detects that the voltage difference of the voltage transducers is larger than the set value, the IC sends out a signal, and a corresponding pressure indication element in the indication module, which is used for reflecting pressure sends out an indication to prompt the user that the force which is applied to the brush head is too large. The electric toothbrush provided by the invention has various working modes, has the functions of working mode converting, reminding and memorizing, pressure warning and indicated pressure warning, charging and charging indicating, battery capacity indicating, electric quantity indicating and the like. The electric toothbrush can complete various functions.

A belt-type continuously variable transmission comprises a drive pulley including cylinder and cramp chambers which vary an effective radius of the drive pulley when applied with a hydraulic pressure, a driven pulley including cylinder and cramp chambers which vary an effective radius of the driven pulley when applied with a hydraulic pressure, a belt operatively put around the drive and driven pulleys and a hydraulic circuit that applies the cylinder and cramp chambers of the drive and driven pulleys with the hydraulic pressure to vary the effective radii of the drive and driven pulleys. The hydraulic circuit includes a line pressure passage that has a line pressure regulating valve installed therein for producing a line pressure in the line pressure passage. The cramp chambers of the drive and driven pulleys are substantially the same in a pressure receiving area and are connected to the line pressure passage to be fed with the line pressure.

The invention provides a valveless hydraulic servo system and a control method of the valveless hydraulic servo system. The valveless hydraulic servo system comprises an alternating current servo motor, a two-way variable pump, a hydraulic cylinder, pressure sensors, a displacement sensor, a speed sensor and a controller. The controller outputs a control instruction to instruct the alternating current servo motor to adjust rotation speed and / or the two-way variable pump to adjust the discharge capacity according to pressure values detected by the first pressure sensor and the second pressure sensor, a displacement value detected by the displacement sensor and a speed value detected by the speed sensor. Compared with the prior art, the rotation speed of the alternating current servo motor is variable, the discharge capacity of the hydraulic pump is variable, and the whole system is more flexible in control, suitable for kinds of conditions, high in efficiency and meanwhile capable of prolonging service life of the alternating current servo motor and hydraulic elements and improving the utilization rate of resources.

A power pack unit includes a first hydraulic pump including a first pump enclosure accommodating a first pump cartridge. A second hydraulic pump includes a second pump enclosure accommodating a second pump cartridge. A hydraulic fluid reservoir is positioned between the first and second hydraulic pumps. A first end of the reservoir is secured to the first pump enclosure and a second end of the reservoir is secured to the second pump enclosure. The first and second hydraulic pumps and the reservoir can extend along a common axis. First and second motors can be connected to the first and second pumps. The entire structure can extend along a common axis.

The invention discloses a comprehensive simulation experiment system and a comprehensive simulation experiment method for an engine front-end wheel train. The experiment system comprises an engine front-end wheel train comprehensive simulation experiment system test bed and an engine front-end wheel train comprehensive simulation experiment system control console, wherein the engine front-end wheel train comprehensive simulation experiment system test bed comprises a fixed panel (21); the engine front-end wheel train is arranged on the fixed panel (21); the rear end of an engine belt wheel shaft is connected with a main motor (24); the rear end of a load belt wheel shaft is connected with a power simulator (25); the engine front-end wheel train comprehensive simulation experiment system control console comprises a case (1) and a control system; the front of the case (1) comprises a control panel; and the control system comprises a personal computer (PC) host and a controller. The invention has the advantages that: various performance parameters of the engine front-end wheel train of an automobile under a working state can be obtained; the measured parameters are comprehensive, andthe measurement precision is high; furthermore, the test bed is high in integration property, and is convenient to mount and maintain.

An improved structure of a transmission structure for an electrically operated bicycle, structured to include an electric mechanism and a pedal coaxially disposed on a pedal shaft of a bicycle. The present invention is characterized in that: a rotating shaft of the electric mechanism is a hollow tube that passes through two sides of the electric mechanism; the pedal shaft of the pedal mechanism penetrates and is disposed within the rotating shaft and is able to rotate therein; and the driving chain wheel is pivotal disposed on an outer side of the rotating shaft. One side of the driving chain wheel is coupled to the rotating shaft of the electric mechanism by means of a clutch, and the other side of the driving chain wheel is coupled to a pedal crank of the pedal mechanism by means of a unilateral bearing.

The invention relates to a method and a device for determining a variable describing the speed (VwheelDef)of at least one driven wheel (1, 2, 3, 4) of a motor vehicle. In this context, variables describing the respective wheel speeds (Vwheeli)for the remaining driven wheels of the motor vehicle, and a variable describing the output rpm (noutput) of a transmission (5) of the motor vehicle are determined. To be able to make a reliable variable describing the speed magnitude of the wheel (1, 2, 3, 4) available to a traction control system or a vehicle-dynamics control system of a motor vehicle in spite of the failure of a speed sensor (9, 10, 11, 12) arranged at one of the wheels, it is proposed that the variable describing the speed (VwheelDef) for the at least one driven wheel (1, 2, 3, 4) be determined as a function of the variables which describe the respective wheel speeds (Vwheeli) of the remaining driven wheels and as a function of the variable which describes the transmission output rpm (noutput).

A power pack unit includes a first hydraulic pump including a first pump enclosure accommodating a first pump cartridge. A second hydraulic pump includes a second pump enclosure accommodating a second pump cartridge. A hydraulic fluid reservoir is positioned between the first and second hydraulic pumps. A first end of the reservoir is secured to the first pump enclosure and a second end of the reservoir is secured to the second pump enclosure. The first and second hydraulic pumps and the reservoir can extend along a common axis. First and second motors can be connected to the first and second pumps. The entire structure can extend along a common axis.

The invention discloses a wave energy power generating device based on a serial connection linear magnetic gear motor, and belongs to a power generating device combining a linear magnetic gear and a permanent-magnet linear motor through serial connection. The wave energy power generating device comprises a permanent-magnet linear motor part, a linear magnetic gear part, a floating tube, a floater, an external encapsulation device and a base, wherein an outer rotor is driven by a driving motor and a mechanical transmission part to move in a certain moving range, the goal of variable transmission ratio is achieved, and the whole set of device has the advantages that the additional arrangement of a huge accelerator is not needed, the size is smaller, the energy capturing and power generating efficiency is high, no terminal winding is adopted, no radial force is exerted on a bearing, and the like.

A bionic pectoral fin propelling device based on a planetary gear train, including a frame, a power source (1), a propelling part (2), left and right maneuvering parts (3), a fixed support plate (4), a movable support plate (5), a left pectoral fin (6), a right pectoral fin (7), a fish body (8), and a tail fin (9). The fixed support plate (4) and the movable support plate (5) are installed on the frame parallel to each other; the fixed support plate (4) is located in front of the movable support plate (5); and the left and right maneuvering parts (3) are located between the fixed support plate (4) and the movable support plate (5). The present invention solves the problem that the two pectoral fins are not synchronized, realizes variable speed propelling and left / right maneuvering, facilitates increasing the bearing capacity of the propelling device, and is particularly suitable in limited space applications.

A Segmented Ground Gear Transmission (SGGT) is a two-stage epicyclical planetary transmission that converts input angular velocity and toque to a continuously variable output varying the effective diameter of ground stage ring gear. The ground stage ring gear is expanded and contracted in segments, half occupied by planets and half free. The segments occupied by planets transfer torque to ground, but do not move except in small angle twist for section curvature correction, while the free segments move in rotation to close the gaps between segments, but do not carry load. The ground stages of the two-stage planets displace to maintain correct mesh with and to correct curvature errors in the sections. The load-bearing segments and free segments exchange roles so the planets can rotate and orbit continuously for extended periods. Anti-friction rolling contacts are used throughout.

With a device for controlling the drive of a reel, with a wire supply in the form of a coil of said wire supply, from which the wire, through interposition of a tensioning device, which is spring-pretensioned in one deflection direction and effective up to a maximum deflection, for approximated stabilization of the wire tension of a feed installation of the wire infeed of a downstream positioned wire processing machine, the velocity curve of the feed rate of the wire infeed in accordance with a preset velocity-time profile is controlled by a control unit of the wire processing machine, and whereby the curve of the rotation speed of the reel in accordance with a preset rotation speed-time profile is controlled by the drive control of the reel, whereby the drive control of the reel sets the rotation speed-time profile of the reel, with regard to the velocity-time profile of the feed rate, forward by a preset time interval.

The invention discloses a power-free rapid ventilation system of a workshop. The power-free rapid ventilation system of the workshop comprises a ventilator, a wind-driven wheel, a wind direction plate, a main shaft, a bevel gear a, a bevel gear b, a supporting frame, a rotary disc, a driving shaft, a transmission mechanism c and a going barrel. The ventilator is installed in a ventilation passage at the top of the workshop. The bevel gear b is installed on a ventilator shaft and engaged with the bevel gear a. The rotary disc is arranged at a top end outlet of the ventilation passage, and the bottom surface of the rotary disc is provided with a guide groove corresponding to the ventilation passage. The supporting frame is arranged on the rotary disc. The wind-driven wheel is installed on the main shaft. The main shaft is installed on the supporting frame through a bearing. The wind direction plate is arranged on the supporting frame and on the side symmetric to the wind-driven wheel. The two ends of the transmission mechanism c are connected with a transmission shaft and the main shaft correspondingly. The going barrel is arranged between the driving shaft and the transmission shaft, and the two ends of a spring shaft are connected with the transmission shaft and the driving shaft correspondingly through an overrunning clutch. The bevel gear a is installed on the driving shaft. The work area of the wind-driven wheel is large, and the wind-driven wheel can be driven to rotate by even small natural wind.

Gear change of a transmission using variable-capacity pump motor with no increase of the rotational speed of the power source is possible by judging the fixed gear which is set by locking one of the pump motors. The controller comprises judging means (step S2) for judging whether the extrusion capacity of one of the pump motor is zero or not and transmission control means (step S3) for carrying out control to operate one of the synchronizers so that one of the transmission mechanisms for transmitting the power from the power source to the output shaft is brought into a power transmission disabled state from a power transmission enabled state when the judging means has judged that the extrusion capacity of one of the pump motors for transmitting the power from the power source to the output shaft through the one of the transmission mechanisms is zero.

The invention discloses a full-automatic speed changer of bicycles. The speed changer comprises a variable speed drive device and a variable speed control device. The variable speed drive device is a three-stage planetary gear train structure which is coaxial with a main shaft, the variable speed control device comprises a part which comprises a constantly meshed output pawl and a constantly released control pawl which are evenly distributed on the outer circumference of the ring gear in the planetary gear train and three stages of the pawls are controlled by a reset spring; and an off-center block balance disc part which controls the meshing action of the pawls and the a ratchet. The off-center block balance disc comprises a fixed disc and a swing link disc which is arranged on the axial diameter of the fixed disc. The swing link disc is hinged with the control pawl through a gear connection rod and a pawl poke rod; a concave arc trough is arranged on the motion track formed by the sliding and swinging of the pawl poke arm along the reset spring; and a rolling bearing is arranged between the swing link disc and the axial diameter of the fixed disc. The full-automatic speed changer of bicycles has the advantages of high sensibility and high reliability of variable speed control.

The present invention relates to a series of "Force-enhancing Powerful Magnetic Energy Engine wit High speed" for converting magnetic energy into mechanical energy characterized in that it has many sets of "permanent magnets" stored with a plenty of magnetic energy, and is capable of carrying out repeatedly unlike pole mutual attration and like-pole repalleance to prduce and output powerful attractive force and repellent force. And through the force-enhancing and speed-increasing device, the engine can attain and maintain "Energy Conservation" for a corresponding long time. Every time the energy stored in the system is almost exhausted, new energy will be introduced subsequently from the outside, causing the engine to be able to continuously rotate and to do work externally. The engine consumes no oil, no electricity, no gas and no coal; noise free and no pollution with high rotational speed.

The invention discloses a high-quality and efficient submarine cable laying system. The system comprises a construction ship, a gantry crane, a submarine cable untwisting disc, a cable guiding device,a cable distributing machine and a submarine cable burying machine, wherein the gantry crane, the submarine cable untwisting disc and the cable guiding device are all arranged on the construction ship, the submarine cable untwisting disc is arranged on the left side of the cable guiding device, the cable distributing machine is arranged on the right side of the cable guiding device, the gantry crane is arranged on the right side of the cable distributing machine, and the submarine cable burying machine is arranged in the sea bottom through the gantry crane. According to the integrated hoisting mode during submarine cable loading, a whole submarine cable reel which is rotated and wound is hoisted to a rotary base, a submarine cable is untwisted during construction through the submarine cable untwisting disc, quick reversing and speed change can be achieved, the speed adjusting range is wide, and the equipment safety and reliability are good; the submarine cable enters the underwater cable distributing machine and is constructed after being untwisted through the submarine cable untwisting disc, the transmission ratio is stable, and the submarine cable is buried under the effect of the submarine cable burying machine.

A shift position detection apparatus for a variable speed gear wherein a shift shaft is moved in an axial direction to perform a speed changing operation. A variable speed gear includes a clutch sleeve disposed for movement in an axial direction on a counter shaft with a shift shaft disposed so as to extend in parallel to the counter shaft. A shift fork is coupled and attached to the shift shaft and has an end engaged with the clutch sleeve. The clutch sleeve is moved in the axial direction through the shift fork to select a shift position. A shift position detection apparatus includes F, R and N shift detection portions provided on the shift fork. The F shift detection portion and the R shift detection portion are spaced by approximately 60 degrees in a circumferential direction on substantially the same plane perpendicular to the axis of a cylindrical portion.

The invention discloses a hybrid coupling and an assembling method thereof. The coupling comprises a driving disc and a driven disc. The driving disc comprises a connecting cylinder, back iron blocks,first magnetic rings and second magnetic rings. The driven disc comprises a connecting sleeve, a back iron disc, a back iron sleeve and third magnetic rings. The connecting cylinder is fixedly connected with a driving shaft. The back iron block is embedded into the connecting cylinder. The first magnetic rings are fixed to the connecting cylinder and cover the back iron blocks. The second magnetic rings are fixed to the end face of the connecting cylinder and connected with the back iron blocks. The connecting sleeve is fixedly connected with a driven shaft. An annular groove is formed in theconnecting sleeve. The back iron sleeve sleeves the connecting sleeve and is positioned in the annular groove. The connecting sleeve sleeves the connecting cylinder, so that the driving shaft and thedriven shaft are coaxially arranged. The third magnetic rings are distributed on the side, facing the second magnetic ring, of the back iron disc. The magnetic poles of every two adjacent third magnetic rings are arranged oppositely. The magnetic field intensity of the coupling is improved; the grooves and magnetic leakage amount of the coupling are reduced; collaboration is improved; the assembling difficulty of the coupling is reduced; a torque is increased through vortexes formed through speed changing; and combination is accelerated.