64results about How to "Prevent excessive output" patented technology

In one use, a motor mechanism for an electronic lock is disclosed. In one embodiment, the motor mechanism includes a split nut that travels along a threaded screw drive. When the split nut is physically limited from further travel along the screw drive, the split nut decouples and recouples with the screw drive to reduce drag on the motor and thereby reduce motor burnout. As a result, smaller, more cost effective and efficient electric motors may be utilized together with simplified electronics.

A control circuit and method for controlling the output voltage and / or the output current of a switching power supply. The control circuit includes a transformer with a primary-side and a secondary-side main winding and a primary-side switch for switching on and off the primary current through the primary-side main winding in response to a control signal of the control circuit. The control circuit also includes a primary-side auxiliary winding operable to induce a voltage pulse after the primary-side switch is turned off, and a sample and hold device for sampling and storing a level of the voltage pulse for generating a control variable.

An electric-acoustic stringed instrument has a removable, adjustable and acoustic artwork top with a decorative bridge and tailpiece; a mounting system for electric string vibration pickups that allows five degrees of freedom in placement and orientation of each pickup anyplace between the neck and bridge; a pickup switching system that provides K*(K−1) / 2 series-connected and K*(K−1) / 2 parallel-connected humbucking circuits for K matched single-coil pickups; and an on-board preamplifier and distortion circuit, running for over 100 hours on two AA cells, that provides control over second-and third-harmonic distortion. The switched pickups, and up to M=12 switched tone capacitors provide up to M*K*(K−1) tonal options, plus a linear combination of linear, near second-harmonic and near-third harmonic signals, preamp settings, and possible additional vibration sensors in or on the acoustic top.

In one use, a motor mechanism for an electronic lock is disclosed. In one embodiment, the motor mechanism includes a split nut that travels along a threaded screw drive. When the split nut is physically limited from further travel along the screw drive, the split nut decouples and recouples with the screw drive to reduce drag on the motor and thereby reduce motor burnout. As a result, smaller, more cost effective and efficient electric motors may be utilized together with simplified electronics.

A material spreading drive system for a hopper spreader having a conveyor and a spreader separately driven by two electric motors that are powered directly from the electrical system of the vehicle. The conveyor drive system includes a gearbox that transmits 90 to 95 percent of power received from the conveyor motor to the conveyor, thus reducing the demand on the electrical system. As a result, the electrical system is capable of also powering a second electric motor that drives the spreader. Due to the improved efficiency of the conveyor belt system, increased conveying and spreading speed are possible as well as independent control over the operating speeds of the conveyor and spreader.

In a method and system to diagnose exhaust gas sensor deterioration, an automobile includes an exhaust gas system. The exhaust gas system has a fuel delivery system, an engine, a catalytic converter, an exhaust gas sensor, a processor, and / or a memory. The fuel delivery system supplies fuel which is combined with air to form a mixture combusted by the engine to generate exhaust. The processor controls the air-fuel ratio of the mixture based on the air-fuel ratio data of the exhaust detected by the exhaust gas sensor. The catalytic converter reduces pollutants in the exhaust. The processor analyzes the air-fuel ratio data to determine one or more time constants of a step response for rich to lean fuel operations and / or lean to rich fuel operations. The processor compares the time constants to a predetermined time constant threshold to determine if the exhaust gas sensor has malfunctioned.

The invention discloses an indoor unit air gear adjusting method. The method includes the steps that the values of a first operation parameter and a second operation parameter of an indoor unit are obtained regularly with a first preset period as the interval and stored; the difference values of the first operation parameter and the second operation parameter in the corresponding period are regularly calculated with a second preset period as the interval; and when the difference values are larger than a first preset threshold value, the value of a first variable is used as an air gear level difference value to increase the air gear, or when the difference values are smaller than a second preset threshold value, the value of the first variable is used as an air gear level difference value to decrease the air gear. The invention further discloses an indoor unit air gear adjusting device and an air conditioner indoor unit. By the adoption of the indoor unit air gear adjusting method and device and the air conditioner indoor unit, the air gear of the indoor unit is automatically adjusted to be increased or decreased correspondingly according to the different conditions of the relationship between the difference values of the two preset operation parameters of the indoor unit and the preset threshold values, the situation that the output of an indoor fan is excessive when the values of the two operation parameters are greatly different due to the fact that the air gear is fixed is avoided, and the energy saving purpose is achieved.

It is determined that a periodic zero current stagnation state is reached to correct a voltage command of a smoothing capacitor downward by a predetermined voltage when a state where a current (reactor current) flowing through a coil in a dead time when switching elements are both off immediately after the switching element (upper arm) is turned off from on stagnates at a value of 0 occurs at switching periods of the switching elements. This can prevent a voltage of the smoothing capacitor from becoming unexpectedly higher than the voltage command in the current stagnation state, prevent the smoothing capacitor from being damaged by an overvoltage and prevent excessive torque from being output from motors.

When both engines operate properly, a control apparatus for an aircraft performs control of thrust and attitude of an aircraft using an output that is produced evenly by the two engines. When a failure occurs in one of the two engines, the control apparatus performs the control of thrust and attitude of the aircraft by increasing an output of the remaining engine that operates properly to an emergency output. When the failure occurs in one of the two engines, the control apparatus makes an engine output that is used for the control of thrust and attitude of the aircraft lower than an engine output that is used when both engines operate properly, until the remaining engine that operates properly is enabled to produce the emergency output.

The invention discloses an indoor fan control method and a device. The indoor fan control method has the following steps: when an air conditioner refrigerates, actual evaporation pressure is obtained, and is compared with preset target evaporation pressure, and an air level of an indoor fan is adjusted according to a difference value between the actual evaporation pressure and the target evaporation pressure; or, when the air conditioner heats, actual condensation pressure is obtained, and is compared with preset target condensation pressure, and the air level of the indoor fan is adjusted according to a difference value between the actual condensation pressure and the target condensation pressure. The indoor fan control method and device can reduce the energy consumption of an indoor unit.

An electric fence including a web of galvanized, high-tensile strength steel wires coupled to and between a pair of posts, the web including a plurality of substantially horizontally extending wires arranged substantially parallel to one another, and a plurality of substantially vertically extending wires arranged substantially parallel to one another and extending to and between each of the horizontally extending wires to form a plurality of wire rectangles, each rectangle having a desired size.

An internal combustion device, rotor self cooled, concentric and symmetric shape, dynamically variable compression ratio; capable of developing multiple Otto cycles per rotation, using modules, each made, mainly of a solenoid gate valve and three chambers operating at the rotor periphery. High power / weight ratio, that improves substantially, by increasing quantity of working modules, and without any drive shaft lengthening. With volumetric asymmetry ratio between chambers, combustion gasses quick exhaust and fast rise of air / fuel mix pressure peak. Proper for many types of combustion and class of fuels, including hydrogen, and efficient use of compressed air as external energy supply. Excels in aircraft use.

The present invention provides a circuit structure of a liquid crystal panel and a driving method of a liquid crystal panel. The circuit structure of a liquid crystal panel comprises: a data driving control chip having n data signal output lines, a column driving scan chip, M triggers, M liquid crystal pixel array areas corresponding to the M triggers, a dot clock signal (CLK) and a common voltage (VCOM); each of the liquid crystal pixel array areas comprises: (n×N) liquid crystal pixels, N scan signal lines, and n liquid crystal pixel data signal lines; By sequentially triggering the triggers, the liquid crystal pixels of the M liquid crystal pixel array areas are sequentially charged without interferes with one another. The present invention also provides a corresponding driving method of a liquid crystal panel. The circuit structure of the liquid crystal panel and the driving method of the liquid crystal panel are capable of reducing the amount of the data signal output lines of the data driving control chip. Meanwhile, the color shift caused by the varying charges to the left, right areas and the middle areas of the liquid crystal panel can be solved.

The present disclosure concerns an apparatus (10) and method for reading out an optical chip (20). A light source (13) is arranged for emitting single mode source light (S1) from its emitter surface (A1) towards an optical input (21) of the optical chip (20). A light detector (14) is arranged for receiving measurement light (S2) impinging onto its receiver surface (A2) from an optical output (22) of the optical chip (20), and measuring said received measurement light (S2). The emitted source light (S1) is aligned to enter the optical input (21) of the optical chip (20) and the measurement light (S2) is aligned back onto the receiver surface (A2). The receiver surface (A2) is larger than the emitter surface (A1) for facilitating the overall alignment.

A mold clamping unit includes a mold height adjustment system having a length-adjustable threaded connection, comprised of a threaded spindle and a spindle nut which supports a platen of a molding tool, for stroke transmission and transmitting a locking force in clamping position. A clamping mechanism, which locks the spindle nut in relation to the threaded spindle and is selectively releasable for length adjustment of the threaded connection, includes a clamping nut, connected in fixed rotative engagement with and coupled for slight axial displacement in relation to the spindle nut, and an actuator, switchable between an active position, in which the spindle nut is braced with the clamping nut by a tightening force so that the platen is urged against the spindle nut, and an idle position, in which the actuator is released and which can be implemented irrespective of a stroke position of the drive mechanism. The threaded spindle and the platen are coupled to each other directly via the spindle nut for transmitting the clamping and locking forces, and via the actuator for transmitting an opening force in opposition to the clamping force.