353 results about "Shift time" patented technology

A control system is provided to effect a method to control torque output from a two-mode, compound-split, electro-mechanical transmission during gear-to-gear shifting event when an off-going torque-transfer device is disengaged. It includes a computer program which controls transmission operation. A predetermined preferred torque output from the transmission device is determined. Torque output from torque-generative devices device is controlled. Torque transmitted across a selectively actuated torque transfer device is controlled, and limited based upon available battery power. Actuation of the oncoming torque-transfer device is preferably based upon a temperature of the device during the shifting event. The temperature during the shifting event is determined based upon a rotational speed of an input shaft to the transmission and an elapsed time to shift.

Scheduling of activities for field service technicians may be improved by modifying availability constraints associated with appointment windows for activities. Activities may be scheduled based on a performance deadline and relevant shift times of the resources to whom the activity may be allocated, as well as a variety of parameters relating to activities, resources and/or relevant environmental conditions (e.g., weather, traffic). An activity may be moved from one calendar day to another, a location constraint at the beginning and/or the end of a technician's shift may be removed or modified, and/or information updates may be provided in real time or near real time (e.g., every five minutes or less) throughout a work day to facilitate scheduling. In one example for scheduling dispatch of locate technicians for locate operations, ticket information relating to locate request tickets, as well as resource information relating to available technicians, may be extracted from a ticket database and a resource/technician database to provide appropriate inputs to a scheduling engine, based at least in part on matching available resources to performance deadlines associated with locate requests.

A control apparatus of a hybrid vehicle having a first drive unit, a second drive unit, a HV battery, a shift control element, a battery state detection element, and a shifting-time drive control element. Furthermore, in the control apparatus, a battery balance control element is formed by an engine control element, a first motor control element, a second motor control element and the shifting-time drive control element. If the shift control element determines there is a need for shifting carried out by a stepped transmission, the battery balance control element calculates the amount of increase/decrease in the amount of charge of the HV battery in accordance with the state of the HV battery, and changes the engine operation point on the basis of the calculated amount of increase/decrease in the battery charge, prior to the shifting.

Methods and systems are provided for operating a vehicle with a transmission. In one example approach, a method for a vehicle comprises, during a transmission shift having a first engine speed profile, adjusting a transmission shift indication provided to a vehicle operator based on a desired perceived shift time and a desired engine deceleration rate.

An image recording apparatus includes a recording head having a plurality of nozzles, a carriage, a transfer mechanism, a driving mechanism, a detection mechanism which optically detects an ink ejection state, and a controller. The plural nozzles are divided into a plurality of nozzle groups. The controller makes an ejection timing of each of the nozzle groups different from that of any other nozzle group. The shifting time of the timing of each of the nozzle group is shorter than an ejection cycle in image recording of each group.

The invention provides a shifting method and a shifting system of a hybrid electric vehicle. The hybrid electric vehicle comprises an engine, a clutch, a synchronizer, an electric generator and a drive motor. The engine, the electric generator, the clutch and the drive motor are connected in series in turn; the clutch is connected to the electric generator and the drive motor. The shifting method comprises the steps of receiving a shifting instruction and quickly reducing torque of the engine through negative torque provided by the electric generator, and determining a target gear according to the shifting instruction; separating the clutch to perform shifting operation when the input torque of the clutch is less than the safety torque of the clutch. According to the shifting method disclosed by the embodiment of the invention, the clutch is separated to perform shifting operation when the input torque of the clutch is less than the safety torque of the clutch, thus the shifting time is reduced, the efficiency of power transmission is improved, emissions are reduced, and the service life of the clutch is prolonged.

A vehicle driving force control apparatus is provided to prohibit a change in a shift schedule that will cause insufficient power generation of a generator that supplies power to an electric motor to drive a first drive wheel. The vehicle driving force control apparatus has a shift schedule change section, a power sufficiency determining section and a shift schedule change prohibit section. The shift schedule change section is configured to change a shift schedule of a transmission of the main drive source. The power sufficiency determining section is configured to determine whether generated power of the generator will be insufficient by a change in the shift schedule by the shift schedule change section, when an electromotive force of the generator is driving the electric motor that supplies torque to the first drive wheel. The shift schedule change prohibit section is configured to prohibit a change of the shift schedule by the shift schedule change section, upon the power sufficiency determining section determining that the generated power of the generator will be insufficient.

Provided are a transmission control method for a mechanical transmission, capable of shortening a gear shift time without undergoing a shock attributed to gear disengagement, and an apparatus therefor. The transmission control apparatus comprises engine torque control means (S10) for controlling an engine torque generated by an internal combustion engine so that the value of a transfer torque of a friction clutch is 0 or near 0 when a gear shift of the mechanical transmission is required, gear shift allowing means (S12) for aloowing the gear shift of the mechanical transmission when the engine torque is controlled by the engine torque control means so that the value of the transfer torque is 0 or near 0, and gear shift executing means (S16) for disengaging and engaging gears with the clutch kept connected when the gear shift is allowed by the gear shift allowing means.

The invention discloses a hybrid transmission assembly, which comprises a permanent magnetic synchronous motor, an AMT (automated mechanical transmission) and a differential, which are disposed in a same case. The AMT comprises a motor output shaft, a motor intermediate shaft, an engine input shaft, an intermediate shaft, an output shaft and variable-speed transmission components arranged on the five shafts respectively, wherein the motor output shaft, the motor intermediate shaft, the engine input shaft, the intermediate shaft and the output shaft are arranged in parallel. The permanent magnetic synchronous motor is arranged in the case, and the differential is in fit connection with the output shaft. The hybrid transmission assembly solves the AMT shifting power interruption problem which is different to solve, and active synchronous shifting, shifting time shortening and shifting impact reduction can be realized. During shifting, rotation speeds of the input end and the output end of a synchronizer can be identical or approximate to each other by controlling rotation speed of the motor, so that shifting quality can be improved. When the motor is connected with the input shaft, maximum torque or maximum speed required by different operating conditions can be obtained by the aid of different gears, and function of running or parking charging functions in feed can be realized. In addition, when the motor is connected with the intermediate shaft, power can be provided independently when gear shifting for an engine is required.

The present invention provides a method and apparatus for mathematically calculating an optimal transmission input torque value for the inertia phase and the torque phase of a ratio change. Engine output is then altered by an amount necessary to change the actual value of the transmission input torque to the calculated optimal value of transmission input torque. The timing of the clutch elements during the power-on skip through neutral downshift is established by calculating delay periods for the off-going and on-coming clutches such that a predetermined desired shift time is met. The power-on skip through neutral downshift is thereafter adaptively controlled so that aberrations are diagnosed and corrected during subsequent downshifts. The invention is carried out by monitoring engine and/or transmission characteristics including input speed, output speed and shift duration during a downshift and identifying departures from acceptable patterns. Each type of departure calls for a particular remedy, and a suitable adjustment is calculated thereafter implemented by changing one or more initial conditions for the next shift of the same type.

A hybrid electric vehicle having a discrete ratio transmission shifts according to distinct shift schedules in various operating modes. For example, different shift schedules may be used for operating with the engine off, operating with the engine running, and regenerative braking. When the vehicle transitions from one mode to another, the new shift schedule may schedule a shift that the driver would not expect. To avoid annoying the driver, a control strategy inhibits the shift until either the old strategy would also schedule a shift or a customer event occurs.

The present invention provides a method of selecting an economy mode shift schedule for a transmission coupled to a motor vehicle. The method includes calculating vehicle acceleration and determining a change in accelerator pedal position. Also, a net tractive effort force of the vehicle is determined for a current gear range of the transmission. Also, the method includes comparing the net tractive effort force for the current gear range to a maximum tractive effort force for a desired gear range and selecting the economy mode shift schedule for the transmission based on the comparison. The method further includes controlling shifting between one or more gear ranges of the transmission according to the economy mode shift schedule.

A method and system for configuring physical resource and signal transmission when communication systems coexist are provided. The method includes: configuring physical resources of the Wimax 16e frame according to LTE frame configuration information by following modes: configuring the number of downlink symbols in the Wimax 16e frame and shift time of the Wimax 16e frame relative to the half frame of the LTE frame according to the condition that the downlink region of the Wimax 16e frame is included in the downlink region of the LTE frame in time domain; and configuring the number of uplink symbols and time length of Transmission/Receive Transition Gap (TTG) in the Wimax 16e frame according to the condition that the uplink region of the Wimax 16e frame is included in the uplink region of the LTE frame in time domain; wherein, the uplink and downlink handover period of LTE frame is 5 ms.

An electronic device capable of shortening display start time when a user approaches while reducing power consumption. A detection unit detects a distance between a display unit and an object. A control unit changes a mode of the display unit according to the detected distance among a display mode, and first and second power saving modes. The second power saving mode is larger than the first power saving mode in power consumption. The second power saving mode is shorter than the first power saving mode in shifting time to the display mode. The control unit sets the display unit to the display mode when the object is closer than a first distance, to the second power saving mode when the object is further than the first distance and closer than a second distance, and to the first power saving mode when the object is further than the second distance.

A method of and system for handling allocation of task work to resources with flexibly configured availability contours (work calendars) is disclosed. The method includes defining one or more base calendars, a resource calendar associated with each resource, wherein the resource calendar inherits from a base calendar. A calendar reader, a set of recurring exception records, and a set of effective weeks for each calendar are also defined. For a specific date, the method determines whether an exception exists in one of the base calendar and resource calendar, and if an exception exists, computes a cached effective week honoring the exception data from an associated recurring exception record. If an exception does not exist, a cached effective week for the resource is computed from a combination of the calendar's standard week and associated effective week records. The cached effective week is contains day state information (working shifts) for the resource for each weekday of the calendar week surrounding the initially requested date. The cached effective week can then used by a scheduling engine to schedule task work for the resource honoring the intended availability contour. The disclosure can also be thought of as describing a system which includes a processor and a memory coupled with and readable by the processor. The memory contains a series of instructions that, when executed by the processor, cause the processor to define one or more base calendar and a resource calendar associated with each resource. Each resource calendar inherits from the base calendar. The processor also defines a calendar reader, a set of recurring exception records, and a set of effective week records for each calendar. For a specific date, the processor determines whether an exception exists in one of the base calendar and resource calendar. If an exception exists, it computes a cached effective week including the exception from the associated recurring exception record. If an exception does not exist, it computes the cached effective week using a combination of the calendar's standard week and associated effective week entries. In both cases, the cached effective week is kept for subsequent use in establishing day state information (shift times) for the resource for each weekday of the calendar week surrounding the initially requested date.

The invention discloses a tree species classification method, device and equipment based on SAR (Synthetic Aperture Radar) and optical remote sensing time sequence data, and the method comprises the steps: selecting a part of forest classes in a research region as a training region in advance, taking the rest forest classes as verification data, and collecting the optical remote sensing image timesequence data and the SAR image time sequence data according to the training data; And preprocessing the optical remote sensing image data and the SAR image data, and performing feature extraction respectively to obtain forest shift time sequence change features. And performing clustering analysis on the time sequence change characteristics, and establishing a tree species classification system.And according to the multi-feature decision tree model and the tree classification system, constructing a decision rule of a single classification time sequence feature index or a multi-classificationfeature index, and according to the decision rule, carrying out step-by-step classification on the tree species in the predetermined area to obtain a tree species decision tree classification model.Verifying the result of the tree species decision tree classification model according to the verification data, evaluating the precision, and adjusting the decision tree threshold value according to the precision evaluation result to update the tree species decision tree classification model. And extracting a tree species distribution map according to the updated tree species decision tree classification model.

The invention discloses an urgent speed reducing and gear shifting control method and system of an automatic transmission, which are used for controlling gear-shift jumping of a vehicle in case of slamming on the brake for speed reduction. The urgent speed reducing and gear shifting control method comprises the following steps of: acquiring multiple operating parameters of the vehicle in real time, wherein the multiple operating parameters at least include a current gear position, a brake signal and a current acceleration value a of the vehicle; calculating to obtain critical acceleration value a 0 based on the current gear position and preset gear shift time t; acquiring a target gear position according to a preset jump shift-down mode if the brake signal is available and the current acceleration value a is less than the critical acceleration value a 0, if not, acquiring the target gear position according to a normal shift-down mode; and carrying out gear shift from the current gear position to the target gear position on the vehicle.

A method for optimizing a braking sequence in a vehicle with automatic transmission (3) and gearbox (9) and automatic cruise control, which cruise control controls acceleration and braking to achieve a set speed, taking into account the distance to the vehicle in front. Data simulations are carried out continually of how the vehicle will be driven in the future, for a set of different combinations of engine speed at which a gear change takes place, gear change step and braking sequence, and a braking sequence with associated gear change schedule is selected that will be optimal. The vehicle is equipped with at least two different braking systems, for example service brake and auxiliary brake (48, 6). The system selects to brake primarily with the braking system that has the least tendency to wear.

The invention relates to a self-adaptive control method and control system of a wet clutch for a continuously variable transmission, belonging to the control field of wet clutches for automobile continuously variable transmissions. In the clutch control process, the actual combination time of the clutch is controlled in real time, in the meantime, if other conditions, such as speed, accelerator pedal and the like, meet a self-adaptive condition, a self-adaptive function is activated, and an oil charging pressure value needed to be regulated is stored in an electrically erasable, programmable read-only memory which plays a role of correcting rating data in application software and controls the actual combination time of the clutch to meet the requirement of target combination time. Through the technical scheme provided by the invention, when an automatic transmission control unit works normally, the control system can carry out online intelligent parameter adjusting and automatically optimize the combination time of the clutch and the gear shifting quality, thereby having a strong self-adaptive capability and ensuring that the result can completely meet a control requirement. The realization of a self-adaptive algorithm in the control system can remain the combination quality of the clutch of the automatic transmission to have optimum performance within the life cycle and ensure the stability of shifting time and quality.

The invention provides a thyristor resistance transition shifting on-load tap-changer, comprising a shifting circuit. The invention is characterized in that the shifting circuit comprises a thyristor shifting switch circuit and a transition resistance branch which consists of a transitional thyristor switch and a transitional resistance. Compared with the existing mechanical switch resistance transition shifting on-load tap-changer, the thyristor resistance transition shifting on-load tap-changer has the advantages as follows: 1. the no-arc shifting is realized, and the electric service life of the switch is not restricted by the shifting times; 2. during the shifting process, the voltage does not exceed the conduction voltage decrement (1 to 2V) of the thyristor when the movable contact of each mechanical switch and the fixed contact thereof are turned on or turned off; furthermore, the recovery voltage of the traditional resistance transitional on-load tap-changer can be one time or more times of the step voltage; the mechanical switch bears extremely different tasks between the thyristor resistance transition shifting on-load tap-changer and the traditional resistance transitional on-load tap-changer; 3. the work load and the cost for maintenance and keeping are reduced.

The invention relates to an electric control automatic shift controller of vehicle speed changer, especially an electric control shift executor of electric control mechanical automatic speed changer or dual-clutch automatic speed changer, wherein said device is driven by motor, which can be mounted on the space of vehicle engine chamber or frame; via the screw nut device or worm device, the rotation of motor can be converted into axial motion or worm swing of sliding nut; via pushing soft axle to drive the dial axle and shift dial fork, the shift hold and shift back can be completed; three same executors and detectors can independently drive three dial fork axles of speed changer; the hall linear element detects the shift signal, to realize automatic shift control of speed changer. Since the invention can eliminate shift selection, it can reduce the shift time, reduce the power loss, and improve the acceleration property. The invention has simple structure, with reliable control and wide application.