9 results about "Feedforward systems" patented technology

This disclosure describes a feed forward control system for engaging a dissipative energy system for dissipating energy produced by a motor of an electrically-powered machine as a result of deceleration of the machine, for example to decelerate and execute a directional change for the machine. The control system includes a feed forward system that engages based on an input signal to spool up and power-on a dissipative energy system of the machine such that as energy is produced, the energy may be divided between the dissipative system and the charging system of the machine. The feed forward controller operates based on a function of a charging current limit of the battery, inversely proportional to the charging current limit.

The application discloses a kind of digital filter structures for Σ-ΔADC downsampling, adopt full digital method to construct three-order single loop feedforward system, series integrated integral-comb cascaded filter, compensation filter and half-band filter.Integral-comb cascaded filter is composed of multistage integrator series recursion structure, support downsampling multiple programmable, improve parallelism and hardware utilization by moving delay unit position in advance.Compensation filter adopts odd-order integrator multi-branch parallel, reduce resource occupation, significantly improve processing speed;Half-band filter uses retiming technology to adjust coefficient position, reduce critical path delay, improve the highest frequency of system, while reducing the amount of calculation through symmetric structure and multiplexing extraction path, front extraction reduces the demand of operation rate and data loss.The application realizes low power consumption, low hardware consumption and high design flexibility of downsampling filter in Σ-ΔADC digital module.

This disclosure describes a feed forward control system (110) for engaging a dissipative energy system (112) for dissipating energy produced by a motor (102) of an electrically-powered machine (100) as a result of deceleration of the machine (100), for example to decelerate and execute a directional change for the machine (100). The control system (110) includes a feed forward system (314) that engages based on an input signal (310) to spool up and power-on a dissipative energy system (112) of the machine (100) such that as energy is produced, the energy may be divided between the dissipative system (112) and the charging system (104) of the machine (100). The feed forward controller (314) operates based on a function of a charging current limit (108) of the battery (106), inversely proportional to the charging current limit (108).

This application belongs to the field of industrial vision technology, and particularly relates to a high-speed feedforward system and method for pole piece detection. The high-speed feedforward method for pole piece detection in this application adjusts the diopter of the liquid telecentric lens according to the feedforward parameter information; obtains an end face image of the pole piece with better imaging resolution and imaging signal-to-noise ratio; and then completes the burr defect detection of the pole piece through a vision algorithm. Based on feedforward correction, this application has the advantages of fast response speed and effective avoidance of missed detection, and is suitable for high-speed motion scenarios; it is not limited by the inherent depth of field of the optical system, allows a larger aperture diaphragm, has great flexibility, and is conducive to obtaining better imaging resolution and imaging signal-to-noise ratio; the liquid telecentric lens has the advantages of fast response speed, good stability, small volume, and strong repeatability, making this application more suitable for high-speed detection application scenarios; the structure and algorithm of this application are relatively simple, which is conducive to obtaining the stability and accuracy of detection.

Provided are a channel coding method and apparatus, and a first user equipment, the method comprising: a first user equipment acquiring K information bits, and setting an initial state of a system convolutional code, a non-system convolutional code, or a feed-forward system convolutional code; the K information bits are encoded using a systematic convolutional code, a non-systematic convolutional code, or a feedforward systematic convolutional code. According to the embodiment of the invention, under the condition that multiple user equipment multiplexes the same time-frequency or space-time-frequency resource for transmission, first user equipment presets that a shift register uses a system convolutional code, a non-system convolutional code or a feed-forward system convolutional code in an initial state; according to conditions such as a channel, the number of activated users and the like, a proper channel code is selected to code K pieces of information and determine whether to truncate the coded tail bit, so that non-orthogonal multiplexing of more users or random access of more users can be supported by using the coding scheme, and the system transmission or random access efficiency is improved.

A system simulating a decisional process in a mammal brain about characteristics of motions related to body gestures of a visually observed body through a simulated visual path is provided. The system includes an interface toward simulated neuronal structures, the interface at least converting luminous information of the observed body to an optic flow data stream conveying information related to the visually observed body and that can be processed in the simulated neuronal structures, the system being a feed-forward system and comprising hierarchically from the visual observation to the decision: the simulated visual path and its interface, a simulated local motion direction detection neuronal structure for the detection of motion directions with receptive fields, a simulated opponent motions detection neuronal structure, a simulated complex patterns detection neuronal structure, and a simulated motion pattern detection neuronal structure.

The present invention relates to the technical field of optimizing tap water treatment, in particular to an online intelligent alum dosing system based on deep data cleaning, including data mining and modeling of a feedforward system, online data cleaning and model updating. According to the data mining and modeling of the feedforward system and online data cleaning and model updating, PAC predictive dosing is realized. The present invention greatly saves the dosing cost while meeting the turbidity of the settled water.

The invention discloses an air conditioner control method and device, an air conditioner, a storage medium and a computer program product. The air conditioner is provided with an indoor unit, a set of reference microphones, a set of error microphones and a set of loudspeakers. The method comprises the steps that under the condition that the air conditioner runs, a set of reference noise signals collected by a set of reference microphones are obtained; obtaining a group of error noise signals collected by a group of error microphones; based on the group of reference noise signals and the group of error noise signals, adopting a multi-channel hybrid active noise control algorithm to obtain a group of output signals; a set of loudspeakers is driven with a set of output signals such that a set of loudspeakers generates secondary noise signals to reduce or even offset error noise signals at a set of error noise signals. According to the scheme, the feedback system is added on the basis of the feedforward system of the ANC control system to set the multi-channel hybrid ANC control system, the noise environment of the air conditioner indoor unit is improved, and the use experience of a user is improved.

This invention discloses a feedforward adjustment method, device, and storage medium for calibrating the consistency of host control execution, belonging to the field of mechanical automation control technology. The method includes: acquiring the control input signal and the actuator output signal during the feedforward system control process, and plotting a measured curve; selecting the dead zone endpoint from the measured curve as the calculation starting point and the extreme point of the actuator output signal as the calculation endpoint, and plotting a desired curve; equally dividing the measured curve and the desired curve into several sampling points to obtain the coordinate data of the measured curve and the desired curve, respectively; obtaining the linearity by calculating the average deviation; comparing the linearity with a preset linearity threshold; if the linearity is greater than the preset linearity threshold, then optimizing by adjusting the actuator input signal. This invention can improve the trajectory accuracy of the host robotic arm in complex high-speed conditions and solve problems such as poor accuracy and lag.