45 results about "Acceleration deceleration" patented technology

The invention discloses an NURBS (Non-Uniform Rational B-Spline) interpolation method based on machine tool dynamics and curve characteristics, which adopts a constraint equation ZHYS considering integrative factors of machine tooling for controlling the feeding speed and the acceleration of the interpolation algorithm. The method consists of three links: pre-interpolation, prospective information processing and real-time interpolation, and comprises the following steps of: carrying out trigonometric function speed smoothing processing according to the corresponding speed mode; storing corresponding data after the trigonometric function speed smoothing processing; adopting the trigonometric function speed smoothing processing according to prospective information if entering an acceleration-deceleration region; and adopting a speed self-adapting method for calculation if not entering the acceleration-deceleration region, thus finally obtaining the coordinates and the feeding speed of interpolation points. The method of the invention has the advantages that the interpolation is always in the safe range of a machine tool, the whole interpolation movement process is smooth and stable through the trigonometric function speed smoothing processing, in addition, the tangential acceleration and the continuity of the tangential acceleration in the speed change region can be ensured, and the NURBS interpolation method has the important significance on the development of a high-speed and high-precision numerical control system.

The invention discloses a method for planning the velocity of S-shaped acceleration and deceleration control for a control system of numerical control equipment. A 'collimation line' concept is introduced in the method and the method comprises the following steps: setting the parameters of a vectorial line segment are set; calculating the allowed velocity Vc of a collimation line according to theinput vectorial line segment; judging whether the collimation line conditions are reached or not, if so, producing one collimation line, and adding the produced collimation line into a collimation line linked list in sequence; after the collimation line linked list is fixed, respectively calculating the maximum velocity of each collimation line according to a traversal algorithm; and completing the collimation line interpolation task through a field programmable gate array (FPGA) program, distributing the pulses of the collimation lines to all the practical movement axes of an electronic gear, and converting digital information into electrical information for controlling the movement of a motor. The method has the beneficial effects that the method is applied to S-shaped acceleration deceleration control, so that shacking and collision which are generated because a machine is very heavy can be well avoided, the operation stability of the machine is improved, and the processing efficiency is increased. The solution idea of the collimation line is introduced. The data processing amount is effectively reduced, and the data processing capability is improved.

The invention provides a method for controlling vehicle machine application operating authorization, a vehicle-mounted device and a terminal. The vehicle-mounted device comprises a first acquisition module, a second acquisition module and a sending module. The first acquisition module is used for acquiring the running states of the vehicle, and the running states comprise a vibration state, a turning state and an acceleration-deceleration state; the second acquisition module is used for acquiring the control data of the vehicle, and the control data comprises the speed, the engine rotating speed, the steering wheel turning direction, and the accelerator/brake pedal state; and the sending module is used for sending the running states and the control data to a terminal, and the terminal automatically adjust the operating authorization of the vehicle machine application on the terminal according to the running states and the control data; and the terminal is connected with the vehicle-mounted device in a communication manner. According to the above scheme, the operating authorization of the vehicle machine application is controlled and adjusted according to the monitored running state and the running data of the vehicle, and therefore when a driver needs to pay attention to driving the vehicle, the driver cannot carry out some operations of the vehicle machine application, and the driving safety of the driver is guaranteed.

The invention relates to an acceleration-deceleration method for a computerized numerical control machine tool, which comprises the following steps: recieving an acceleration-deceleration time signal and a speed signal; obtaining dissimilar first weight value and second weight value by the acceleration-deceleration time signal through a first function and a second function; judging whether a speed variation of the speed signal is zero, a positive value or a negative value; outputting the speed signal when the speed variation is zero; obtaining an acceleration signal by the product of the speed signal and the first weight value when the speed variation is the positive value; obtaining an deceleration signal by the product of the speed signal and the second weight value when the speed variation is the negative value; and converting the speed signal, the acceleration signal and the deceleration signal into a first driving signal, a second driving signal and a third driving signal respectively. The acceleration-deceleration method for the computerized numerical control machine tool of the invention can achieve the effect of a thrice moving average method only by once acceleration-deceleration plan, effectively control the jerk and the acceleration-deceleration time signal, and improve the product quality.

The invention discloses a servo-motor acceleration-deceleration control method for a servo pressure machine, comprising the following steps of: constructing an acceleration function of a servo motor at an acceleration stage; establishing a speed expression of the servo motor at the acceleration stage; establishing a rotary displacement expression of the servo motor at the acceleration stage; constructing an acceleration function of the servo motor at a deceleration stage; establishing a speed expression of the servo motor at the deceleration stage; establishing a rotary displacement expression of the servo motor at the deceleration stage; and determining total acceleration time and total deceleration time. According to the servo-motor acceleration-deceleration control method, two triangular functions with different periods are adopted as acceleration-deceleration constructed functions of the servo motor, so that the change of the speed, the acceleration and the accelerated acceleration is continuous, the soft shock of the acceleration-deceleration process on the machine body is avoided, the operation stability of the pressure machine is improved and the softness of acceleration-deceleration control of the pressure machine is higher; and by full utilization of the constant and maximum output torque of the server motor under the rated rotating speed, the operation period of the servo pressure machine can be shortened and the takt time of stamping production is improved.

The invention provides a heat recovery and circulating system of an air compressor. Typically, a heat-transferring device is arranged between the air compressor and a cooler. The system can recycle the heat energy produced by the air compressor effectively, and converts the heat into heat resources for other purposes, uses a pump to pressurize cooling water to make the cooling water to pass through the air compressor, the heat transferring device and the cooler respectively, uses a controller to monitor the temperature of the cooling water flowing through the air compressor and the cooler, and then outputs a control signal after calculation according to the preset condition so as to control the acceleration-deceleration or operation stop of the cooler so that the cooling water can flow back to the pump via the cooler after passing through the air compressor and the heat transferring device to form the heat recovery and circulating system. With control of the temperature of the cooling water at control positions, the heat recovery and circulating system can achieve the optimum recovery and heat dissipating efficiency.

The invention discloses a treadmill adaptive system based on 3D depth camera and flexible pressure-sensitive sensor, comprising a treadmill body. The treadmill body comprises a running belt driven bya motor; a flexible pressure-sensitive sensor is arranged below the running belt; the treadmill body is provided with a 3D depth camera; the flexible pressure-sensitive sensor is used for acquiring sole pressure distribution information of a user and uploading to an upper computer; the 3D depth camera is used for acquiring running attitude information of the user and uploading to the upper computer; the upper computer can adjust the speed of a motor according to current subjective acceleration-deceleration intention and current speed and acceleration information. The treadmill adaptive systemallows the speed of the running belt to be well adaptively adjusted.

The objective of the invention is to provide a power conversion device for reliably restrain the switching of the dc voltage, even if in the harsh operation such as rapid acceleration-deceleration. In order to restrain the excessive inverter output power generated by flux control delay due to urgent acceleration-deceleration at the inverter side to the value corresponding to the rectifier. The processing comprises: setting the inverter output power maximum depended on the rectifier control capacity at power limiting set device, inputting the setting value of the power limiting set device, current detecting value detecting by the inverter output current detector and voltage detecting value detected by inverter output voltage detector to the power limiting calculator, calculating the torque current limiting value calculated by current detecting value and voltage detecting value, not exceeding the setting value, inputting the limiting value after calculation to the torque current order limiter, restraining the torque current order value based on the input limiting value in the torque current order limiter.

The slope detecting device includes means for detecting a horizontal acceleration of the vehicle; means for detecting perpendicular acceleration to the running direction of the horizontal detecting means; and means for detecting, attaching relatively to the horizontal detecting means and perpendicular detecting means, detecting the acceleration-deceleration the moving object by whether the sum of squares respectively which the acceleration detected by the horizontal detecting means and the acceleration detected by the perpendicular detecting means is equal to the second power of gravity acceleration, and calculating the slope of the vehicle in acceleration-deceleration so that it can detect the slope of vehicle in acceleration-deceleration as well as during running the vehicles at a constant speed.

The invention belongs to the technical field of packaging, and particularly relates to a high-speed aluminum-plastic bubble cap machine. According to the high-speed aluminum-plastic bubble cap machine, tablets, capsules, ampoule bottle and other similar materials can be packaged in a plurality of specifications, and good packaging effect is effectively guaranteed; forming cam mechanism serves as a transmission mechanism through a servo motor and a precise cam mechanism, a pure mechanical cam mechanism is replaced, the constraint of mechanical transmission is avoided, the forming speed and stability are increased, automatic compression and automatic forming of the packaging material can be realized, wherein both the compression force and the forming depth can be adjusted, and the problem that the packaging material cannot reach the standard and the raw materials are wasted due to inaccurate positioning between the upper mold and the lower mold is solved; and the vibration-proof acceleration deceleration blanking mechanism is provided with a rotating-sequence suction head mechanism which can effectively prevent section blocks from being clamped in concave molds, the normal operation of the whole machine is guaranteed, pressure plate air pipes enable the section blocks to be slowly descended, the situation that the section blocks due to the gravity of bottles at the moment when being punched fall on a conveying belt of an outlet is avoided, the anti-vibration and anti-inclination effects can be achieved, the damage can be reduced, and the production cost can be saved.

The invention discloses an online S-type acceleration-deceleration planning method with optimal time. The method has a feature of realizing online real-time computation, and can plan out an interpolation trajectory satisfying a movement constraint condition according to any initial movement state and an ending state that the acceleration is equal to zero; an offline computation process is simplified, and the movement trajectory can be automatically planned in real time according to a signal returned by a sensor under an unknown environment.

The invention discloses a non-uniform rational B-spline (NURBS) interpolation feed speed planning method aiming at an embedded system. The prior method cannot satisfy requirements of the embedded system. The method disclosed by the invention comprises the steps that firstly, simulation values of the interpolation feed speed are stipulated; and afterwards, the feed speed is planned in a segmented manner according to turning points of a NURBS curve. The method disclosed by the invention has the advantages that the minimum acceleration-deceleration contour curves of feed shafts in respective integral intervals are computed from a global view, so that the computing efficiency is effectively improved; and through screening effective feature switching points and correcting the minimum contours of the acceleration-deceleration curves of the feed shafts at the feature switching points, the complexity of a planning algorithm is greatly simplified.

The invention discloses a jam prohibiting method for a city road traffic system, advancing a jam signal control technique, transmitting front vehicle speed signal and local vehicle speed signal measured by a vehicle-carried speed measurer to a MCU, determining feedback coefficients by the MCU according to the designed feedback control signal and jam-free conditions, calculating acceleration deceleration prompting information and displaying the prompting information on a display unit, and as seeing the prompting information, a driver will properly adjust the vehicle speed, thus improving responding sensitivity of the driver so as to avoid the traffic jam. And the control technique has characters of simple structure, low cost and easy to implement, able to improve driving safety and comfortableness and making full use of road traffic capacity.

A presentation control device controlling an information presentation device in a vehicle equipped with a vehicle control device for controlling an acceleration-deceleration function or a steering function, includes: a plan acquisition section that acquires a travel plan indicating a control content of the vehicle; a behavior change determination section that determines whether a control target value relating to a magnitude of a behavior change included in the travel plan is larger than an advance threshold; and a presentation execution section that presents the control content to the occupant using the information presentation device in accordance with the behavior change occurring in the vehicle when the control target value is smaller than the advance threshold, and presents the control content temporarily in advance of an actual behavior change when the control target value is larger than the advance threshold.

A travel control device is applied to a hybrid vehicle which includes a planetary gear mechanism capable of distributing power of an internal combustion engine to a first MG and an output part, and a second MG capable of outputting power to the output part. The travel control device allows the vehicle to travel in an acceleration-deceleration travel mode in which, when a high-speed steady travel condition is established during travel of the vehicle, acceleration travel for accelerating the vehicle with power output from the internal combustion engine and coasting travel for allowing the vehicle to coast with the internal combustion engine in a stop state are alternately repeated within a target vehicle speed range. In the travel control device, given power is output from the internal combustion engine at the time of acceleration travel, and the internal combustion engine is controlled such that the vehicle is accelerated at an acceleration such that the rotation speed of the first MG becomes zero.

The invention discloses an ion implantation system comprising an ion source and an extractor, a quality analysis magnet, a first acceleration-deceleration device, a deflecting magnet, a second acceleration-deceleration device and a work piece scanner. The deflecting magnet makes ion beams within a preset charge-to-mass ratio range divergent; the system further comprises a correction magnet arranged between the deflecting magnet and the second acceleration-deceleration device, and the correction magnet is used for correcting the ion beam deflected and diverged by the deflecting magnet within the preset charge-to-mass ratio range to be a preset implantation angle. The invention further discloses an ion implantation method realized by utilizing the ion implantation system. Through the ion implantation system and method, disclosed by the invention, the evenness of dosage of ions implanted into a large wafer work piece can be improved, thus the production efficiency is improved, and the cost consumed due to the comprehensive update of the whole ion implantation system can be largely saved.

An inverter of in a synchronal motor drive system synchronally drives a plurality of synchronal motors containing the inclined magnet rotor after the magnetization. The inverter does a feedforward operation based on the inertia and the value of the acceleration-deceleration so as to automatically control the output voltage when the inverter drives the output frequency to change and operate in the acceleration-deceleration state.

The invention discloses a control method used for a CD-ROM roller automatic balancing system. The method provides a rotary body which is fixed on the rotary shaft of the CD-ROM to lead the rotary body to revolve with the rotary shaft synchronously. Rollers are provided in a round rail in the rotary body to move smoothly. A revolution speed scope is arranged, and a main shaft motor drives the rotary shaft to accelerate-decelerate by at least two times within the revolution speed scope. During the multiple acceleration-deceleration of the main shaft motor, if a measured signal difference value is greater than the signal difference value measured previously, the acceleration-deceleration scope is adjusted. The roller balancing method of the roller-type automatic balancing system of the invention drives the rotary shaft to repeat the acceleration-deceleration within the revolution speed scope to further balance the rollers to the best vibration-reducing position in the round rail. Additionally, when the automatic balancing system generates a bigger difference caused by manufacturing tolerance, the acceleration-deceleration scope is adjusted again to be applied to all the CD-ROM automatic balancing systems.