54results about How to "Simplify the tuning process" patented technology

A method of making a tuning map for a vehicle device includes deriving performance parameters of the vehicle device in a new vehicle and setting a target tuning performance. A pre-tuning map is established by building an interpretation model of the new vehicle including an interpretation model and a control model of the vehicle device, and tuning parameters, which satisfy the target tuning performance, are set using the performance parameters through interpretation of the models. The pre-tuning map is applied to a control logic of the vehicle device for an actual vehicle which includes the vehicle device mounted therein, and the actual vehicle tuning is performed. Whether actual vehicle performance satisfy a preset target performance after tuning the actual vehicle is evaluated, and the tuning map is finalized when the target tuning performance is satisfied.

The invention discloses a rotor position identification method in a low-speed range of a permanent magnet synchronous motor, which belongs to the field of permanent magnet synchronous motor control. In order to solve the problem that the use of multiple filters in the traditional pulse vibration signal injection method causes the superposition of hysteresis effect, the decrease of the dynamic performance of the system and the increase of the position estimation error. The present invention proposes a new low-speed position sensorless control strategy, specifically on the basis of injecting the high-frequency pulse vibration square wave voltage signal into the two-phase stationary coordinate axis system, through a generalized second-order integrator (SOGI) to β The current in the shaft is subjected to signal separation and amplitude demodulation to obtain two orthogonal signals containing rotor position information, and then the rotor position information is extracted by heterodyne method and rotor position observer. No filtering is used in the whole signal demodulation process device. The dynamic performance of the control system and the estimation accuracy of the rotor position are effectively improved.

The invention discloses a system for generating on chip clock of a stabilizer fin through initialization, which comprises a chip provided with a clock automatic locking - integrated circuit configuration IP, a crystal oscillation clock source, a nonvolatile memory and a light-emitting diode, wherein the clock automatic locking - integrated circuit configuration IP comprises a phase discriminator,a charge pump, an analog-to-digital converter, a register, a digital-to-analog converter, a current / voltage controlled oscillator and a frequency locking detection circuit; the crystal oscillation clock source is connected with the input at one end of the phase discriminator; the phase discriminator, the charge pump, the analog-to-digital converter and the register are connected in turn; the register is also connected with the digital-to-analog converter and the nonvolatile memory; and the output of the digital-to-analog converter is connected with the input of the current / voltage controlled oscillator, and the output of the current / voltage controlled oscillator is connected with the input on the other end of the phase discriminator, so as to form a circuit; and both output of the crystaloscillation clock source and the output of the current / voltage controlled oscillator are connected with the frequency locking detection circuit. The system can greatly simplify the correction and regulation flow and reduce the cost.

The invention relates to a suspension stiffness adjustable mechanism. The suspension stiffness adjustable mechanism comprises an upper cover plate, a fixing bolt, a rubber body, a lower bottom plate and an adjusting mechanism, wherein the fixing bolt is riveted to the upper cover plate; the upper cover plate, the rubber body and the lower bottom plate are vulcanized into an integrated structure; the adjusting mechanism and the rubber body are vulcanized into an integrated structure. According to the technical scheme provided by the invention, the adjusting mechanism is planted into the rubber body, so that a complicated adjustment process is simplified and refined in a product development process under a rubber stiffness adjusting link. Experiment resources are continuously run and arrangement work before experiments does not need to be repeatedly done; a complicated assembling, adjusting, mounting and dismounting link in the process is omitted and the whole process is finished under a whole vehicle assembling state of special rubber bodies.

The invention belongs to the technical field of chemical energy instruments, and specifically provides a three-point adjustment method for a regulating valve with an electric valve positioner, which connects the regulating valve to be calibrated with a signal generator; in the regulating valve to be calibrated, an input signal m 1 , record the corresponding valve position display value n 1 ;input signal m 2 , record m 2 Corresponding valve position display value n 2 ; compute n 2 and n 1 the difference, compare the difference with 50% of the total stroke; adjust the range knob according to the comparison result until the difference is equal to 50% of the total stroke; input signal m 3 , adjust the valve position display value to 50% of the total stroke position through the zero adjustment knob, and the adjustment is completed; it solves the cumbersome adjustment process of the five-point method, the adjustment time is long, the error in the starting point confirmation process is large, and the maximum defect zero point is difficult If it is accurate, the operator cannot understand the essence and principle of the adjustment. The invention realizes three-point adjustment, the adjustment process is simple, the principle is clear at a glance, the efficiency is high, the accuracy rate is high, and there is no error, and the operator can easily grasp and understand the adjustment. School principles.

The invention discloses a global fast terminal sliding mode control method based on an invariant manifold observer, relates to the control of an underwater robot, and solves the technical problems of chattering and parameter adjustment difficulties in the existing underwater robot. The motion parameters of the underwater robot are analyzed by the invariant manifold observer based on the invariant manifold to obtain the observations of system uncertainty and external disturbance; through the global fast terminal sliding mode control based on the function item The algorithm analyzes the observed values ​​to obtain the continuous control law used to control the motion of the underwater vehicle. The invention has the advantages of simple parameter adjustment, fast convergence speed and small observation error, which not only effectively improves the anti-interference and anti-noise performance of the underwater robot system, but also realizes the chatter-free characteristic and fundamentally eliminates chatter.