85results about "Linear/angular speed measurement" patented technology

Automated methods may comprise automatically converting a ballistic trajectory of a projectile into a ballistic flight path. The ballistic flight path may comprise one or more segments. Each of the segments may comprise a plurality of coordinates. The coordinates may be located along the ballistic trajectory. The automated method may comprise automatically navigating an Unmanned Aerial Vehicle (UAV) along the ballistic flight path. The automated method may comprise automatically collecting environmental data along the ballistic flight path through employment of the UAV.

This invention relates to the field of material handling technology, and specifically discloses an adjustable material handling robot. A drive component is fixedly connected to the side of the base, and the output end of the drive component is fixedly connected to the bottom of a sliding seat. A sliding seat is slidably connected to the inner side of the base, and a movable frame is fixedly connected to the top of the sliding seat. When a workpiece tends to slide downwards under external force or gravity, relative sliding friction is generated between the workpiece and the track. This friction drives the driven wheel of the track to rotate synchronously. A speed sensor on the transmission base starts monitoring, capturing the downward speed signal of the workpiece in real time, and dynamically adjusting the output speed of the drive component accordingly. This controls the positive rotation of the drive wheel, driving the track to move upwards at a speed exactly the same as the downward speed of the workpiece, forming a relatively stationary state where the track moves upwards and the workpiece moves downwards, thus counteracting the downward displacement of the workpiece.

The motion detection device (5) includes a first support (51), a second support (52) that moves relative to the first support, a power generation sensor (100) disposed on the first support, and a magnetic field generating source (400) supported on the second support. The power generation sensor includes a magnetic wire (110), a coil (120), and a magnetic flux conducting plate (130, 131). The magnetic flux conducting plate includes an axially orthogonal portion and an axially parallel portion, and has a wire arrangement portion that fixes the axially orthogonal portion and both ends of the magnetic wire. The power generation sensor is configured such that the side opposite to the magnetic wire is set as the detection area (140) relative to the axially parallel portion. The magnetic field generating source has multiple magnetic poles. Magnetic poles of different polarities enter the detection area sequentially along a track (30) parallel to the axis of the magnetic wire and are opposite to the power generation sensor. The magnetic flux direction of each magnetic pole is perpendicular to its direction of movement and is the direction that intersects with the magnetic wire.

Embodiments described herein are directed to a position sensor that includes a first receiver coil electrically coupled to a first multiplier to generate a first output, a second receiver coil electrically coupled to a second multiplier to generate a second output, a transmitter coil electrically coupled to an oscillator, the oscillator electrically coupled to a third multiplier to generate a third output, a phase-locked loop electrically coupled to the oscillator and the transmitter coil, a summing circuit configured to receive the first output and the second output and configured to generate a signal, a phase detector configured to receive the signal and the third output, the phase detector outputting a sense signal that is indicative of an angle of the motor position sensor, and a pair of op amps electrically coupled to the phase detector. The op amps configured to output an analog differential signal and a differential phase signal.

The utility model discloses a kind of elevator door opening and closing time and speed measuring device, including measurement terminal, speed measurement module and support. Measurement terminal includes shell, encoder socket and button trigger switch, encoder socket and button trigger switch are all set on shell, button trigger switch is used to press elevator door opening and closing button;Speed measurement module includes sucking disc, sucking disc lock catch, gyro wheel and rotary encoder, sucking disc lock catch is set on sucking disc, gyro wheel is coaxially connected with rotary encoder, and rotary encoder is electrically connected with encoder socket;Support is connected by multiple support arms one by one, the first end of support is movably connected with sucking disc, and the second end of support is provided with gyro wheel and rotary encoder. Can improve elevator door opening time, door closing time measurement accuracy, the running speed of car door in the process of elevator door opening and closing is continuously recorded by gyro wheel and rotary encoder. It is convenient to operate, and measurement precision is high, improve elevator installation debugging and detection efficiency.

The present application relates to general mechanical equipment manufacturing technology field, and disclose a kind of installation gap adjusting device for speed measuring probe of gear disc, the installation gap adjusting device for speed measuring probe of gear disc includes support assembly, measuring component, the support assembly includes length-adjustable first support rod and second support rod, for connecting generator large shaft air supply water collecting tank and measuring component, the measuring component includes measuring matrix, installation plate for installing speed measuring probe and positioning plate slidingly assembled on the measuring matrix, the positioning plate is detachably connected with the measuring matrix, for being tightly attached on gear disc, the measuring matrix is equipped with the scale of the distance between speed measuring probe and the positioning plate is shown on it.The installation gap adjusting device for speed measuring probe of gear disc of the embodiment of the application is simple in structure, with positioning plate as reference, the distance of positioning plate relative to speed measuring probe and the position of measuring matrix relative to gear disc are adjusted, so that the gap between speed measuring probe and gear tooth can be quickly adjusted, and operation is safe and efficient.

The application relates to the field of automatic detection sensors, in particular to an ultrathin area light curtain sensor which comprises a light projector, a light receiver and a warning mechanism, the light projector comprises a base, a circuit board, an infrared beam emitter, a rotating rod and an adjusting assembly, one end of the rotating rod is fixedly connected to the base, the other end of the rotating rod away from the base is rotationally connected to the circuit board, the adjusting assembly is used for driving the rotating rod to rotate, the circuit board is fixedly connected with the infrared beam emitter on the side away from the base, a Fresnel lens is fixedly connected to the side of the infrared beam emitter away from the base, infrared light beams emitted by the infrared beam emitter pass through the Fresnel lens and are output to infrared receiving photoelectric devices, the warning mechanism is electrically connected to the circuit board, and the warning mechanism is used for issuing a signal to warn a user. The application has the effect that the mounting frame can easily receive infrared light beams when being inclined, the effectiveness of the infrared light beams is guaranteed, and the application range of the light curtain sensor is increased.

The application discloses an industrial data full life cycle automatic testing method and system, relates to the automatic testing technical field, and is characterized in that: the method is characterized in that: a multi-source disturbance energy efficiency difference formula containing a tension compensation term and a speed disturbance compensation term is adopted to perform unified time sequence fusion calculation on unit length energy consumption parameter E, belt tension measurement parameter T and speed micro-disturbance parameter dV, the interference of normal working condition fluctuation, tension change and speed disturbance on the energy consumption curve can be automatically stripped, and a net energy efficiency offset R used for reflecting the belt wear trend is extracted. The feature enables the system to identify an energy efficiency micro-loss trend with extremely low amplitude but with accumulation in a super-long time window, realizes a low-amplitude and long-period residual feature identification capability that cannot be captured by traditional single-point detection, and thus significantly improves early micro-loss detection precision, and realizes early warning of the implicit degradation state such as slight offset of the belt tension, initial wear of the carrier roller and local resistance change.

The present invention relates to a Wiegand wire device (100; 100*) comprising: a Wiegand wire (1a), a sensor coil (2) surrounding the Wiegand wire (1a), two field conducting elements (3a, 3b) arranged at opposite ends (1.1, 1.2) of the Wiegand wire (1a) and each surrounding one of the ends (1.1, 1.2) of the Wiegand wire (1a), and a triggering device (4; 4*) configured to displace the Wiegand wire (1a) and at least one of the two field conducting elements (3a, 3b) relative to one another.

The application discloses a kind of based on dynamic pulse discrimination steam turbine speed anti-interference measurement method, it is related to industrial automation control field, the method includes: S1: by the speed sensor of installation in steam turbine rotor speed measuring gear flank alternately changed and generated sine wave signal of tooth valley conversion into digital pulse signal by conditioning circuit;S2: calculate the effective pulse frequency f of this sampling time, to calculate effective pulse cut-off period T;S3: for subsequent new pulse, calculate the time interval Δt between it and the last pulse being judged as effective;If Δt≥T, then determine that the new pulse is effective pulse;If Δt < T, then determine that the new pulse is interference pulse and is rejected;S4: update effective pulse frequency f, calculate the real-time speed of steam turbine, calculate the real-time speed of steam turbine solves the defect that present art relies on hardware filtering and is difficult to eliminate singular interference pulse completely, leading to unreliable speed measurement.

This disclosure relates to the field of thermal automatic control, specifically to a speed signal processing method and system. The system includes: a speed measuring gear, a magnetoresistive speed sensor, a first capacitor, a signal shaping module, and a controller. The speed measuring gear and the magnetoresistive speed sensor are arranged adjacently and separated by an air gap threshold. The magnetoresistive speed sensor is connected to both ends of the first capacitor to generate a speed signal when the speed measuring gear rotates. The first capacitor is used to remove zero-crossing harmonics from the speed signal to correct it. The first and second input ports of the signal shaping module are connected to both ends of the first capacitor to generate a square wave signal based on the corrected speed signal. The controller receives the square wave signal. Thus, the first capacitor selects the frequency of the speed signal, removes zero-crossing harmonics outside the passband, and repairs the distorted speed waveform to obtain a sine wave.

To reduce the processing load related to motor control while maintaining a constant motor rotation speed. [Solution] The motor control system 100 comprises a first acquisition unit 51, a calculation unit 52, and a control unit 53. The first acquisition unit 51 acquires pulses output by a detection unit 91 that detects the rotational speed of a motor 92 that rotates a transport body (screw) for transporting toner to be removed. The calculation unit 52 calculates the rotational speed of the motor 92 based on the acquired pulses at a specific period longer than the pulse period. The control unit 53 controls the motor 92 so that the rotational speed of the motor 92 remains constant based on the rotational speed calculated by the calculation unit 52.

An adaptive crystal oscillator specification velocity measurement method, a GNSS receiver, and a storage medium are disclosed. The method includes: acquiring quality characteristic data of signals from N satellites; determining clock drift estimation characteristic data based on the current satellite signals, assuming the current signal quality meets set quality requirements based on the quality characteristic data; determining an additional clock drift constraint equation based on the clock drift estimation characteristic data, including a first velocity and clock drift solution equation set of N+1 equations, and solving for the receiver velocity and clock drift values; wherein the weights of the clock drift constraint equations in the first velocity and clock drift solution equation set are negatively correlated with the estimated jitter variance of the clock drift. This disclosed scheme, with its adaptive crystal oscillator specification, employs a first velocity and clock drift solution equation set with an added clock drift constraint equation for velocity calculation, enhancing the compatibility of the GNSS receiver / chip calculation method with various crystal oscillator specifications and performance variations caused by usage conditions, and improving the accuracy of receiver velocity calculation.

This invention discloses an energy-saving motor speed data acquisition method and system based on cloud computing, belonging to the field of data acquisition technology. The method includes: acquiring factory production plans, personnel shift schedules, and historical motor operation data; generating production load level information based on the factory production plans, personnel shift schedules, and historical motor operation data; encoding the production load level information to obtain rhythm commands; and sending the rhythm commands to a local data acquisition terminal, which adjusts data acquisition parameters according to the rhythm commands and performs motor speed data acquisition processing based on the data acquisition parameters to obtain motor speed data. The data acquisition parameters include operating frequency, data sampling rate, and preprocessing algorithm complexity. This invention can combine production load level information with rhythm commands to adjust data acquisition parameters to achieve motor speed data acquisition, reducing the power consumption and cost of acquisition equipment.

The application relates to the field of avionics, and discloses a lifting speed filtering method and system based on a second-order Butterworth filter, which comprises the following steps: collecting an atmospheric pressure signal of an airplane in real time, calculating an air pressure height according to the atmospheric pressure signal, calculating a lifting speed signal according to the air pressure height, performing amplitude-frequency characteristic analysis on the lifting speed signal to determine a cutoff frequency of the second-order Butterworth filter, dynamically adjusting the cutoff frequency of the second-order Butterworth filter according to the flight state of the airplane, inputting the lifting speed signal into the second-order Butterworth filter with the adjusted cutoff frequency, and obtaining a filtered lifting speed signal. The application realizes scientific design of filter parameters by performing amplitude-frequency characteristic analysis on the lifting speed signal and obtaining a digital filter structure through denormalization processing and bilinear transformation, determines the cutoff frequency based on the physical characteristics of the signal, and avoids the disadvantages of selecting parameters by experience in the traditional method.

A printed circuit board assembly (100) for a wheel speed sensor unit (125) is disclosed. The printed circuit board assembly (100) includes a curved rectangular printed circuit board (PCB) (105) disposed in between a housing (155) and a spacer shaft (160) of the wheel speed sensor unit (125). The curved rectangular PCB (105) includes a circular through hole (115). The printed circuit board assembly (100) includes a circular magnet (110) fixed inside the circular through hole (115) of the curved rectangular PCB (105). The printed circuit board assembly (100) includes a sensor (120) mounted on the curved rectangular PCB (105). The sensor (120) is mounted proximate and coaxial to the circular magnet (110).

The utility model relates to detection technical field, concretely is a kind of solar electric actuator function detection equipment, including frame, positive installation station, positive and negative installation station, at least one positive installation station and one positive and negative installation station are provided in frame, positive installation station or positive and negative installation station are all equipped with crossbeam, two side columns and bottom plane, the bottom of crossbeam is equipped with one upside-down top air cylinder, the both ends of counterweight block are connected with corresponding side slider respectively, counterweight block is fixed with mounting block on the bottom, pull rope sensor is installed in the bottom of crossbeam, the measuring end of pull rope sensor is connected with counterweight block, support rod subassembly is installed in the bottom of counterweight block, the bottom plate of support rod subassembly is equipped with the gap containing electric actuator, laser displacement sensor is installed in the edge of gap. Compared with prior art, the utility model uses the design of different station, satisfies the test demand of solar electric actuator positive installation, upside-down installation, to verify the function of electric actuator under different installation state.

An agricultural implement includes a main frame having a support bar oriented in a direction generally transverse to a direction of travel when the implement is used to work a field; a plurality of rotating ground-engaging elements aligned along a length of the support bar, and a plurality of bearing caps. Each of the ground-engaging elements is configured to rotate about an axle, and each bearing cap is coupled to one of the ground-engaging elements. Each bearing cap includes an inertial sensor configured to measure an angular motion of the ground-engaging element and a transmitter configured to transmit the angular motion. Each bearing cap is configured to seal an interface between the ground-engaging element and corresponding axle. Related methods are also disclosed.

The present invention relates to a hub assembly for a vehicle wheel having a hub rotatably arranged on an axle element via a hub bearing, the hub ending in a hub neck on the inner side of the vehicle, the inner circumference of the hub neck defining an opening for a central channel for the axle element, and a fastening section (7) on the outer circumference of the hub neck on which an ABS sensor pole ring (8) is mounted. A pulse generator section (10) extends from the fastening section toward the hub axis (A). The hub neck is provided with: a pole ring seat (12) extending coaxially to the hub axis (A), on which the fastening section is radially supported with its inner side; and a tool engagement region (13) guided around the hub neck and descending relative to the pole ring seat toward the hub axis. The fastening section has recesses (14) distributed on the circumference of the fastening section and having a non-uniform axial distance from the pulse generator section, wherein the recess axially closest to the pulse generator section at least partially radially covers the tool engagement region.

The disclosed invention is an electrode drying device including a drying oven in which an internal space is formed for drying an electrode sheet having an electrode slurry applied onto a current collector, and a hot air injection nozzle for injecting hot air onto the electrode sheet transferred into the drying oven, the electrode drying device including a moisture injection nozzle for injecting moisture onto an uncoated portion of the electrode sheet transferred into the drying oven, a water storage tank for storing water, and a pump installed in the water storage tank for supplying water to the moisture injection nozzle. The hot air injection nozzle can inject hot air onto the electrode sheet to dry it, and the moisture injection nozzle can inject moisture onto the uncoated portion of the electrode sheet.

The utility model discloses an online reading and detecting device for a wheel speed sensor, and relates to the field of wheel speed sensors, the online reading and detecting device comprises a mounting plate, a mounting mechanism is mounted on the outer wall of one side of the mounting plate, a reading detector body is mounted on the mounting plate through the mounting mechanism, and the mounting mechanism comprises a mounting box fixedly mounted on the mounting plate; fixing plates are fixedly connected to the outer walls of the two sides of the mounting box, circular openings are formed in the outer walls of the two sides of the mounting box, and limiting rods are slidably connected to the inner walls of the two circular openings. According to the reading detector, the mounting mechanism is arranged on the mounting plate, and the mounting mechanism and the reading detector body are provided with the two prisms for cooperation, so that the reading detector body can be quickly disassembled and assembled conveniently, and meanwhile, the arrangement of the prisms facilitates the auxiliary positioning of the reading detector body; the problem that an existing wheel speed sensor reading and detecting device is inconvenient to disassemble and assemble is solved.

The application relates to the technical field of detection devices, and provides a sensor, a working machine control system and a working machine, the sensor comprising: a signal output unit, a processing unit and a communication unit; the signal output unit is connected with a steering wheel of the working machine and the processing unit respectively, the processing unit is connected with the communication unit, and the communication unit is connected with a controller of an executing mechanism of the working machine; the signal output unit comprises: a rotating structure and a signal circuit, the rotating structure rotates when the steering wheel rotates, so that the signal circuit generates and outputs a pulse signal and inputs the pulse signal to the processing unit; the processing unit determines the rotating direction and the rotating speed of the steering wheel based on the pulse signal, and sends the rotating direction and the rotating speed to the controller of the executing mechanism through the communication unit. The application is used to solve a series of defects in the prior art when the rotating direction and the rotating speed of the steering wheel are obtained, and realizes low-cost and effective obtaining of the rotating direction and the rotating speed of the steering wheel.

This invention discloses a DMA-based MT method speed measurement device and method. The device includes an orthogonal pulse counter (Counter1), a system clock counter, an MCU register, and RAM. The orthogonal pulse counter is used to orthogonally count externally input encoder signals A and B. The system clock counter is used to count the system clock. The MCU register is used to trigger a latch event of the system clock counter at the instant the orthogonal pulse counter changes, and latch the current count value of the system clock counter, the latched value being denoted as TmrCap. After the instant the orthogonal pulse counter changes, the... The count value of the pulse counter is denoted as Qcnt; the RAM includes the BufQcnt[] area and the BufTmrCap[] area, where the BufQcnt[] area is used to store the Qcnt value and the BufTmrCap[] area is used to store the TmrCap value; the RAM is configured with two DMA units, namely DMA1 unit and DMA2 unit, where the pointer read priority of DMA1 unit and DMA2 unit is different. DMA1 unit is used to store Qcnt in the BufQcnt[] area, and DMA2 unit is used to store TmrCap in the BufTmrCap[] area.

This invention discloses a method for stabilization and dynamic voltage saturation prevention based on MTPA / MTPV lookup table, comprising the following steps: Step 1: Filtering out loop disturbances using a conventional low-pass filter, determining the speed fluctuation period based on the actual vehicle vibration, and simultaneously determining the cutoff frequency of the low-pass filter; Step 2: Calculating the system delay time t using the cutoff frequency of the filter in Step 1, and calculating the system acceleration; Step 3: Obtaining the delay compensation speed Vc of the system to be compensated using the delay time t and acceleration a from Step 2; Step 4: Adding the delay compensation speed Vc from Step 3 to the speed Vf output by the low-pass filter to obtain the final lookup table speed V; This invention stabilizes the lookup table and compensates for the delay caused by the filter in dynamic operating conditions, avoiding voltage saturation.

The embodiment of the application provides a window cleaning robot, and relates to the technical field of window cleaning robots.The window cleaning robot comprises a driving system, a photoelectric sensor and a controller, the controller is connected with the driving system and the photoelectric sensor respectively; the driving system comprises a motor, the output shaft of the motor is connected with a grating disc of the photoelectric sensor, the grating disc rotates synchronously with the output shaft; the grating disc is provided with a light-transmitting part and a light-blocking part, in the process of synchronous rotation, the light-transmitting part transmits the light signal between the emitting end and the receiving end of the photoelectric sensor, and the light-blocking part blocks the light signal between the emitting end and the receiving end; the photoelectric sensor generates a pulse signal according to the transmission and blocking of the light signal in the process of synchronous rotation of the grating disc, and inputs the pulse signal into the controller; the controller receives the pulse signal, determines the rotating speed of the motor according to the pulse signal, and controls the movement of the window cleaning robot according to the rotating speed of the motor.The window cleaning robot can realize more accurate movement control.

High toughness permeable color composite pavement construction system and construction method thereof, the system comprises paving device, thick material spraying device, scraping device, texture hammering device and thickness measuring system, which are all installed on the mobile frame device. The scraping device adopts the control strategy that the moving speed V1 of the mobile frame is equal to the extension speed V2 of the scraping plate driving cylinder, so as to realize the intermittent forward scraping of the scraping plate; the thickness measuring system obtains the height average values L1 and L2 through the front and rear measuring sensor matrix, calculates the difference AL=L1-L2, and automatically controls the height of the scraping plate, with the control precision of ±1mm. The construction method comprises the construction of the base layer, the construction of the high adhesion transition layer, the construction of the color functional surface layer and the construction of the fluorocarbon-silane composite protective layer. The application solves the problems of the traditional color pavement, such as insufficient toughness, poor interlayer adhesion and low construction precision, realizes the unity of high water permeability and high durability, and has high automation degree.

This application proposes a method, system, and electronic device for identifying the rotational speed of rotating machinery, relating to the field of rotational speed measurement. The method includes: acquiring raw vibration waveform data and performing a discrete Fourier transform to obtain spectral data containing multiple frequency components arranged in frequency order; assigning voting weights to each of the multiple frequency components, including itself, as a voter; the sum of the voting weights cast by each voter is a fixed value, while the sum of the weights obtained by each frequency component as a voted-for item is a non-fixed value, where the voting weights characterize the correlation strength between the voter and the voted-for item; identifying the target rotational frequency component from the multiple frequency components based on the sum of the voting weights obtained by each frequency component as a voted-for item, and thus determining the real-time rotational speed of the rotating machinery. This scheme can accurately identify the real-time rotational speed of rotating machinery under complex operating conditions without increasing hardware costs.

The application discloses a motor state management method, considers that the motor may appear acceleration abnormality under some conditions (for example, control current mutation), and thus may cause safety problems, so that the acceleration value of the motor under the variable speed state can be acquired in the embodiment of the application, and prompt information about the acceleration abnormality of the motor is output when the acceleration value is out of the preset normal acceleration range, so that the abnormal state can be found and solved in time, and the safety hidden danger can be eliminated, the failure rate of the motor is reduced, and the acceleration value is acquired by using a Hall sensor circuit, and the method has the advantages of low modification cost and high precision. The application further discloses a motor state management device and equipment, which have the same beneficial effects as the motor state management method.

The invention relates to a sealing assembly (5) for sealing a wheel bearing (1) for a wheel-bearing hub (6) of a vehicle, comprising: a sealing unit (10) which is designed to be connected to an outer ring (3) of the wheel bearing (1) for conjoint rotation, and a centrifugal disc (11) which is designed to be connected to an inner ring (2) of the wheel bearing (1) for conjoint rotation, wherein the sealing unit (10) has a sealing carrier and a sealing element which is arranged on the sealing carrier, wherein the centrifugal disc (11) has an encoder (13) on an outer end face (12), which encoder is designed to provide magnetic fields (14), and wherein the encoder (13) has a peripheral recess (19) which extends in an axial direction (A) and radially outwardly delimits a magnetization region (16) of the encoder (13). The invention also relates to a wheel bearing (1) for a wheel-bearing hub (6) of a vehicle, comprising: a rotatable inner ring (2) having an inner ring race (7), a fixed outer ring (3) having an outer ring race (8), a plurality of rolling elements (4) which are located between the inner ring (2) and the outer ring (3) in such a way that they roll along the inner ring race (7) and the outer ring race (8) when the inner ring (2) rotates relative to the outer ring (3). The invention also relates to a sealing assembly (5) according to the invention.