2660 results about "Potentiometer" patented technology

An AC-to-DC voltage converter as power supply for lamp converts an AC input voltage to a constant DC voltage at predetermined value set by potentiometer. The converter includes input power supply 210, input protection circuit 201, EMI filter 202, rectifier 203, filter 204, converter 206, output filter 214, lamp 211, start circuit 208, control circuit 209, biasing circuit 212, sampling circuit 207, output protection circuit 200, feedback and dimming circuit 205 and input monitor circuit 213. This version is a flyback converter; versions from other topologies etc are also provided. The converter has feedback function that can regulate output voltage at predetermined value. The converter has dimming function and can adjust lamp brightness for conformability. The output constant brightness decreases peoples' eyes fatigue to minimum level.

A hand-worn controller consisting of a housing having a central opening sized to permit the controller to be worn as ring on the index finger of a human hand. A joystick lever projects outwardly from said housing and is positioned to be manipulated by the user's thumb. The joystick operates on or more control devices, such as switches or potentiometers, that produce control signals. A wireless communications device, such as a Bluetooth module, mounted in said housing transmits command signals to a remote utilization device which are indicative of the motion or position of said joystick lever.

A game controller having a steering wheel communicating wirelessly with a controller base is provided. The steering wheel includes a wireless transmitter while the controller base includes a wireless receiver. The wireless transmitter is configured to transmit wheel information of the steering wheel to the wireless receiver of the controller base. Steering wheel information can include wheel rotational information. Wheel rotational information can be obtained using an optical sensor, a potentiometer or an accelerometer. The wireless transmitter can be an RF, IR or ultrasonic transmitter. Power for the wireless transmitter can be provided by an onboard battery. A sleep mode can also further extend the life of the wheel battery. It may also be possible to power the steering wheel from the controller base.

A steering apparatus for altering steering direction of an exercise bicycle utilizing an interactive computer or television video game simulation which consists of a steering mechanism primary frame (22) that includes a steering tube (24) and a steering plate (26). The steering tube is disposed within an exercise bicycle frame head. A steer frame (58) is rotatably mounted within the primary frame and utilizes a pair of springs (60) that are suspended between the primary frame and the steer frame. Changing steering direction by rotation of the handlebar (70) attached to the steer frame creates progressively linear resistance to the handlebar movement. The steer frame returns to a centered position when unrestrained, duplicating the feel and impression of riding a bicycle. A potentiometer (32) interfaces with the rotating steer frame providing variable electrical resistance relative to the directional movement of the steer frame to the primary frame. An electrical signal is transmitted from an interactive computer or television video game to the potentiometer which interprets the actual steering position of the exercise bicycle.

A catheter device having a proboscis, such as a needle, and a transducer which detects the axial displacement of the proboscis in relation to the distal tip of the catheter. The transducer is positioned at a distal portion of the catheter and may comprise an induction coil or a potentiometer. Axial displacement of the proboscis changes the amount of inductance or resistance in the transducer. This change in inductance or resistance can be calibrated to the amount of axial displacement of the proboscis and provided as feedback to the user.

A solid-state lighting device has user-engageable actuator physically manipulable by a user and accessible from an exterior of the device to adjust an amount of light output. The user-engageable actuator may take the form of a knob, slider, lever, or other manipulable surface or structure. The user-engageable actuator may extend partially or fully from a housing, or alternatively be recessed or otherwise within the housing with access provided via an aperture, slot or opening. Access may be directly by the user (e.g., finger) or via a tool (e.g., screw driver, Allen wrench, socket) manipulated by the user. The actuator may form part of an adjustment component (e.g., potentiometer, rheostat) which supplies an adjustable output to a drive circuit or electronics. The adjustment component may be electrically coupled to either a primary or secondary side of a transformer, which forms part of a power converter (e.g., flyback).

An electrically powered resistance heating handgrip is provided for a vehicle that employs an electrical storage battery. A control circuit to regulate the amount of power provided to the resistance elements in the grip is provided and preferably located within a hollow core that fits coaxially within the open end of a handlebar of a motorcycle or snowmobile, for example. The control circuit is mounted on a thin, narrow, elongated printed circuit board and includes a microprocessor that is programmed to contain a lookup table of temperatures. A thermistor is embedded in the casing of the handgrip proximate the heating element thereof. The thermistor provides feedback signals to the microprocessor which compares the temperature sensor feedback signals to a target temperature and provides or interrupts electrical power to the electrical heating element depending upon whether the temperature indicated by the thermistor is lower than the target temperature. The target temperature is established by a dial mounted in the butt end of the handgrip. The dial operates the wiper of a variable potentiometer to establish the target temperature. Heat is uniformly distributed throughout each handgrip by wrapping the heating element wire thereof about a thermally conductive sheet of aluminum, and encasing the wire within a temperature resistant dielectric sheathing, such as Teflon(R).

A sustainer is provided for prolonging the vibrations of strings of a stringed musical instrument. The instrument has at least one magnetic pickup means responsive to the vibrations of the strings. The pickup produces an output signal in response to the vibrations of the instrument strings. At least one control potentiometer provides the capability to control at least one parameter of the output signal. The sustainer comprises a string driver transducer capable of inducing vibrations in the strings, a sustainer amplifier having an input which accepts the pickup output signal, and an amplifier circuit which amplifies the pickup output signal to form a drive signal. The sustainer amplifier also has an output, from which the drive signal transfers sufficient energy to the string driver transducer to sustain the vibrations of the strings. A power supply provides electrical energy to the sustainer amplifier. A power switch provides connection and disconnection means between the power supply and the sustainer amplifier in response to actuation of the power switch in order to turn the sustainer on and off. The power switch is an integral part of the control potentiometer, where the two are a physical combination. Both switch and potentiometer are actuated by the shaft of the potentiometer. Furthermore, the appearance of the control potentiometer having the power switch as an integral part, when viewed from the outside of the musical instrument, is similar to that of the instrument containing the potentiometer without the power switch being present as the integral part of the potentiometer.

A vibrator sex toy is provided with touch-based sensors for an ergonomic in-situ method of controlling the operation and intensity of the vibrator. The vibrator sex toy has an internal end, an external end and a middle staging section. The staging section includes a control circuit and batteries. The internal end includes electric vibrator motors connected to the control circuit by wires. The external end includes ergonomically placed touch sensors that behave like variable resistors. The touch sensors respond to natural human gestures such as grasping, stretching, compressing and bending the external end of the sex toy with changes in resistance. The touch sensors are connected to the control circuit by wires and act as potentiometers in the control path of the vibrator motors. The user is able to vary the sensations from the motors intuitively and in-situ by manipulating the external end or applying it to a partner.

The invention relates to an airborne shooting device of an unmanned aerial vehicle, in particular to an airborne air-photo image-stabilizing cloud deck of the unmanned aerial vehicle. A cross beam is installed on a fixing rod of the unmanned aerial vehicle, and a first flat plate with a middle hole is disposed on the cross beam. A horizontal rotating driving steering engine is arranged on a first frame and connected with the first flat plate through a horizontal transmission mechanism, the counter force of the first flat plate drives the first frame to rotate horizontally, and a horizontal angle detection potentiometer can penetrate through the middle hole of the first flat plate in a relatively rotating mode to be fixedly connected on the first frame. A second frame is rotatably disposed on the first frame through horizontal shafts on both sides of the second frame, the horizontal shaft on one side of the second frame is connected with a perpendicular rotating driving steering engine arranged on the first frame through a perpendicular transmission mechanism, and the horizontal shaft on the other side of the second frame is connected with a perpendicular angle detection potentiometer. The second frame is driven by the perpendicular rotating driving steering engine to rotate perpendicularly and rotates horizontally along with the first frame. The airborne air-photo image-stabilizing cloud deck of the unmanned aerial vehicle is good in shock absorption effect, large in driving torque and stable in rotating speed.

The invention relates to an LED dimming control circuit, which comprises a pulse width modulation control circuit (100) and a constant current control circuit (200). The pulse width modulation control circuit (100) comprises a trigger and a potentiometer; and the size of the pulse width generated by the trigger is adjusted by adjusting the potentiometer. The constant current control circuit (200) comprises a field effect transistor and an operational amplifier; and the pulse width generated by the trigger controls the on/off time of the field effect transistor, and controls the potential of reference voltage of the operational amplifier according to the on/off time of the field effect transistor so as to adjust the magnitude of constant current. In the LED dimming control circuit, the size of the pulse width generated by the trigger can be adjusted by adjusting the potentiometer manually, and the potential of the reference voltage of the operational amplifier is changed by setting the on/off time of the field effect transistor according to the size of the pulse width so as to adjust the magnitude of the constant current; therefore, the dimming function is realized.

An audio amplifier is provided having a compressor with an automatically-adjustable compressor. Compression is linked to the volume control in an inverse relationship whereby, when the volume is reduced, the compression ratio is increased to boost the listening level of quieter passages in the source material. Conversely, when the volume is increased, the compression ratio is decreased. The compression control may be physically connected to the volume control, such as in a dual-potentiometer, or may be coupled electronically, such as with a digital signal processor. An effects level control may be included to allow a listener to increase or decrease the effect of the compression by applying a multiplier to the compression ratio. An ambient noise detector may also be included such that compression is increased as ambient noise increases or exceeds a predetermined level.

The invention discloses a digital electric valve positioner and a method thereof. The positioner consists of a control unit, an I/P electric conversion unit, a valve position feedback unit and a malfunction diagnosis unit. By the configuration of the flux characteristic parameters of the positioner, the working flux characteristic aberration which is caused by the factors such as a change of the pressure drop ratio of the adjusting valve, etc. is corrected, which is based on that a plurality of flux characteristics and action directions of the adjusting valve integration are provided. The control to the valve position of the adjusting valve is based on a Fuzzy-PI dual-mode no-interference shifting algorithm. Depending on the internal relationship between the valve position given value, the valve position feedback value and the valve film head pressure which are arranged by a control center and applying a rule-based knowledge reasoning, the malfunction diagnosis is realized through that the user selects to release or partly release the valve film head pressure during the stuck freeing operation. The valve displacement/electric conversion of the valve position feedback unit depends on a non-contact magnetic sensitive potentiometer. The man-machine interaction adopts a touch screen technique, and the control unit is accessed in a control network by an Ethernet interface.

The invention discloses a control device, a pan tilt applied by the control device and a pan tilt controlling method. The pan tilt is used for controlling the execution motion of an optical device and comprises the control device, a control component connected with the control device and an executing component connected with the control component, the control device comprises a rocker which is used for receiving motion instructions and generating a control instruction sent to the control component, the rocker comprises a rocker handle and a potentiometer component connected with the rocker handle, the control component is used for generating an executing instruction for achieving corresponding motions according to the control instruction sent by the control device, and sending the executing instruction to the executing component, and the executing component is used for achieving directional control over the optical device according to the executing instruction. Due to the fact that the rocker is adopted to send the control instruction, the pan tilt is convenient to operate and good in operation hand feeling.

A method and apparatus to automatically reverse the motor of a power tool, such as a dispensing gun or similar tool. In some constructions, a controller automatically reverses the direction of plunger movement and removes the plunger from contact with the back wall of a cartridge. The controller has a trigger switch that is coupled to a power source, such as a battery, and includes a main power on/off switch and a potentiometer. A protection or secondary switch is coupled in parallel to the main power on/off switch. A power supply circuit and a commutator are each coupled to the main and secondary switches. An overload sensor is coupled to the commutator. The controller includes a programmable device that is coupled to the power supply circuit, the potentiometer, the commutator, and the overload sensor. The programmable device is operable to sense actuation and deactuation of the main power on/off switch, read an electromotive force from the potentiometer, and, upon sensing deactuation of the main switch, send a control signal to the commutator to reverse current flow therethrough for a predetermined amount of time, and deactuate the secondary switch when the predetermined time has lapsed.

A micro dermal tone skin stimulator system (2) that uses sale, painless, low-level electrical impulses to “reprogram” muscles to assure nearly original muscle shape and to support skin tissues with healthier blood circulation and more youthful firmness. The system comprises a portable hand-held unit with fully-integrated components, including a housing (22), battery pack, an internal circuit board, and an integrated pair of spherical toning probes (24A &24B) for delivering stimulation to the skin. The circuit board generates a positive low-voltage square wave with 60 ms pulse duration for five cycles, then a negative square wave for five cycles, which repeats, delivering an adjustable 0 to 400 micro-amps output (adjustable by potentiometer). Delivering electrical impulses through the spherical probes (24A &24B) using a gliding technique rehabilitates the muscles, improves circulation, texture and tone almost immediately, and continued use provides lasting clarity and restores freshness to one's appearance.

A processor for controlling a sensorless, brushless DC motor is disclosed comprising a first output for providing a control signal to a potentiometer controlling the speed and voltage of the DC motor. The processor also includes a second input for receiving a back-EMF voltage from an open phase of a three phase winding. The processor determines a digital error signal from the back-EMF voltage and generates a control signal responsive to the digital error signal. The control signal decreases the speed of the motor when the digital error signal is in a first range. The processor decreases both the speed and voltage of the motor when the digital error signal is in a second range. The processor increases the speed of the motor when the digital error signal is in a third range. The processor increases both the speed and voltage of the motor when the digital error signal is in a fourth range.

The invention discloses an integrated-navigation and control hardware-in-the-loop simulation test system of an underwater vehicle. A simulation computer figures out the position, posture, speed and course information of the underwater vehicle, and an SINS (Ship's Inertial Navigation System) subsystem simulates the posture motion of the underwater vehicle. A satellite navigation subsystem simulates the position and speed information of the underwater vehicle, and a depth simulation subsystem simulates the sailing depth information of the underwater vehicle. A DVL (Digital Video Interactive) navigation subsystem simulates and computes the speed of the underwater vehicle, and a virtual line accelerometer simulates the specific force information of the underwater vehicle. A navigation control computer collects the information to complete calculating of an inertial navigation and control system to drive a steering engine to move, the steering engine simulates action, and rudder angle information is fed back to the simulation computer by a rudder angle feedback potentiometer. The system realizes debugging and testing of the integrated-navigation and control system of the underwater vehicle.

Fluid-bed photo-electro catalytic organic water processing device consists of titanium-base oxide positive electrode, negative oxygen electrode, TiO2/C sulfide particle, ultraviolet light source, constant potentiometer DC power source, air distribution board and casing. Not only oxidizing action of positive electrode and reducting action of negative oxygen electrode are used, but also active perssad OH, H2O2, OH- and light, photocatalysis are used, to go deep into bed layer by strong stirring of fluidized particle to increase OH density of the system and to be uniform, TiO2 on surface of fluidized particle produces OH by lighting continuously, and surface of TiO2 particle is renewed continuously.

There is disclosed an internal sizing apparatus comprising a pneumatically activated probe that moves axially within a shoe and non-destructively measures the interior dimensions of the shoe. A linear pneumatic actuator is mounted between a heel piece and a probe. A linear potentiometer is mounted above the actuator and also connects to the probe. The apparatus is inserted into a shoe with the heel piece seated against the interior heel portion of the shoe. A computer system controlling the actuator extends the probe linearly into the shoe until the probe contacts the toe portion of the shoe. The potentiometer then measures the linear distance traveled by the probe and thus determines the internal linear dimension of the shoe. Depending on the type of probe, three-dimensional internal measurements of the shoe can also be quantified.

The invention discloses a double-rotor-wing unmanned plane. Flying control on the double-rotor-wing unmanned plane is realized based on a four-rotor-wing unmanned plane flying control principle by designing a single-degree-of-freedom automatic tilter, semi-rigidity rotor wings and a flying control system. The unmanned plane consists of a stander, a plane body, a power bin, rotor wing systems and a rotor wing system support, wherein the plane body is provided with an equipment bin in which a flight posture sensor group, a PID controller, a lithium battery and an electronic speed controller are arranged; the plane body, the power bin and the rotor wing system support are in rigid fixed connection through the stander; a brushless motor and a steering engine are arranged in the power bin; the steering engine drives a pull rod to operate the single-degree-of-freedom automatic tilter and control the rotor wings to periodically change the distance; the angle of the tilter is measured by a potentiometer, so that precise control is facilitated; the rotor wing systems are symmetrically arranged and are positioned on the same horizontal plane; the rotating directions of the rotor wings are opposite, and the rotor wings are mounted on a total distance hinge so as to be mechanically limited to do waving motion. According to the unmanned plane, the operation mechanism is simplified; the flying quality is good; the requirement on the precision of a theoretical model is low, and an extremely high practical value is achieved.

A polisher has a polishing disc on a shaft driven by a brushless DC motor driven by a motor controller mounted spaced from the polisher and adjacent a ground fault interrupt circuit and a power plug. Power and control wires form a cord that provides communication between a speed control switch, and a speed set switch, mounted on a handle of a polisher housing, which is a magnetic field sensor responsive to a movable magnet. The speed set switch sends a signal to the motor controller either to maintain the current speed of the motor or to allow the speed of the motor to vary in accordance with the output of of the speed control switch. The speed control switch is a variable output switch which can be an optical potentiometer constructed by reflecting light from a light source off a reflective surface forming part of a spring loaded trigger.

The invention discloses a composite power energy management prediction control system of a pure-electric vehicle. The system comprises a motor, a power storage battery and a super capacitor, wherein the power storage battery and the super capacitor are connected with a motor drive control device through a bidirectional DC-DC (direct current) converter respectively; the motor drive control device is connected with the motor; and the system also comprises a microprocessor control system and a vehicular navigation system, a switch pedal potentiometer, a brake pedal potentiometer, a motor detection unit, a power storage battery energy management system and a super capacitor energy management system connected with the microprocessor control system. The system disclosed by the invention can make full use of energy resources, improve energy recovery, increase the once-charge travel distance of the electric vehicle, protect the storage battery, prolong the service life of the storage battery and enhance the power performance of the whole electric vehicle.

The invention relates to a vehicle-mounted pick-up stable platform. The platform adopts a potentiometer as a feedback element of a locking loop, a motor is controlled to move through the angular speed of gyro sensitive vector disturbance, the interference of vector movement is isolated, the drift of a gyro is inhabited, and the stability of a relatively inertial space of a payload is realized; moment increase is carried out by the control unit by adopting a photoelectric encoder and is visual and easy to operate, and the moment increase is carried out by adopting feed-forward control, thereby improving the speed and the precision of the moment increase; and the manual locking and the automatic tracking of a moving object are realized by the platform by adopting an image tracking mode, thereby simplifying the work of operating personnel and effectively ensuring that stable and high-quality image information is obtained. The invention effectively isolates the interference caused by vehicle-mounted angular movement, inhabits the platform drift caused by the gyro, improves the dynamic performance of a system, and has important application value for the fields of film shooting and the like.

The invention discloses a force feedback interactive device for automatically regulating the balance of a dead weight, which is formed by a base mechanism, a shoulder mechanism, a big arm mechanism, a forearm mechanism, a wrist mechanism, an end effector mechanism, an automatic regulating and balancing mechanism, four direct current motors, four photoelectric encoders, three high-precision angular potentiometers and the like. In the invention, the direct current motors and a linear speed reduction mechanism are matched to provide three freedom degree force feedbacks and six motion freedom degrees of the three freedom degree force feedbacks by three photoelectric encoders and the three angular potentiometers. For the automatic regulating and balancing mechanism, one direct current motor is adopted to drive and control a balancing sliding block to automatically carry out dead weight compensation on the arm mechanisms of the equipment in real time by a speed reduction device, so that the manual fatigue is effectively reduced. The mechanism has compact design, large working space range, high rigidity and large range of a feedback force.

The invention relates to a device and a method for on-orbit monitoring of charging of a satellite material surface, belonging to the technical field of space application. The device comprises an electron gun, a non-contact potentiometer probe, a three-dimensional transmission mechanism, a non-contact surface potentiometer, an electron beam current density measuring system, a monitoring electrode,a supporting structure, a first electromagnetic valve, a second electromagnetic valve, a diffusion pump, a third electromagnetic valve, a vacuum box, a mechanical pump, a vacuum penetrating wall, a measurement circuit interface and a measurement circuit. The test method comprises the steps as follows: sending an electron to a sample for monitoring the electrode surface under a vacuum condition, adjusting the position of the non-contact potentiometer probe through the three-dimensional transmission mechanism, recording charging potential Vsurface on the sample surface, measuring leakage current I through the measurement circuit, and finally obtaining a proportional relation coefficient K by known sample resistance rho according to the formula that Vsurface is proportional to KrhoI. According to the invention, the on-orbit surface charging condition of the satellite material is inverted by monitoring the leakage current of the sample in a space environment, and the device and the methodhas the advantage of simple physical structure and is easy to carry in space.

An operator system and related methods (10) for sensing forces on a movable barrier (12) includes a motor (52), a trolley (30), and a trolley arm (34) having a first end slidably supported by the trolley (38) and a second end coupled to the movable barrier. The motor moves the trolley arm which in turn moves the movable barrier. A force detection mechanism (68) is coupled to the motor to determine a first component force value applied by the motor. A controller (54) receives the first component force value and determines a detected force value by scaling the first component force value with a second component force value derived from an angular position of the trolley arm's first end with respect to the trolley. The angular position of the trolley arm may be fixed or variable. An angle potentiometer (72) is coupled to the trolley arm to generate an angle signal for use as the second component force value when the trolley arm's angular position is allowed to vary.

There is disclosed a process and apparatus for reading electrical current of electrodes on a microarray of electrodes. Those electrodes having binding events are detected by a difference in electrical current flow. Enzymes on targets catalyze the conversion of substrate to product, which is detectable by electrochemical reduction at each electrode on the microarray of electrodes. The apparatus has an integration circuit that provides a voltage output that is measured and recorded over time and used to calculate an average current flow. A potentiometer equalizes voltage at electrodes undergoing measurement compared to grounded electrodes.

The invention provides a manual operating device for a bone surgery assisted robot, belonging to the technical field of medical appliances. The device is arranged on the tail end of a mechanical arm, and comprises a three-freedom operating rod, a mode selection switch and a redundancy gesture control switch, wherein the three-freedom operating rod, the mode selection switch and the redundancy gesture control switch are respectively connected with a robot controller through a signal cable; a signal processor comprises a digital IO module, an A/D conversion module and a calculation module; the A/D conversion module converts a voltage analogue signal from a potentiometer in the operating rod into a digital signal and inputs to the calculation module; the digital IO module inputs the state information of the mode selection switch and the redundancy gesture control switch into the calculation module; the calculation module transmits a control instruction to the robot controller through a serial bus and the robot controller realizes the robot action. The device can enable the operators to control position and gesture of the executor at the tail end of a seven-freedom robot.

The invention provides a power system of a compound energy electro-vehicle, comprising a compound power supply controlling machine box, a main power supply connected with the power supply controlling machine box, a solar energy photovoltaic cell and a super capacitor module set, wherein, the output end of the compound power supply controlling machine box is connected with a motor driving controlling module and an assistant device, and the other end of the motor driving controlling module is connected with a motor; a hardware main circuit and a control circuit which are mutually connected are arranged in the compound power supply controlling machine box; the hardware main circuit is connected with the solar energy photovoltaic cell via an unidirectional DC/DC converter and is connected with the super capacitor module set via a bidirectional DC/DC converter; the input end of a microprocessor in the control circuit is connected with a temperature detecting module, a current detecting module and a pressure detecting module via a signal conditioning circuit, and the output end is connected with the motor driving circuit and an assistant device potentiometer via an optocoupler isolation circuit. The invention can better improve the acceleration performance and climbing performance of a vehicle, reduce heavy current discharging time of the main power supply and avoid the main power supply from damage and reduction of volume.