710results about How to "High compensation accuracy" patented technology

An exemplary active matrix organic light emitting diode (OLED) display includes a data line, a current sensing line, a power line and a plurality of pixels all electrically coupled to the data line, the current sensing line and the power line. During a data current is writing to a selected one of the pixels, the selected pixel draws a current from the current sensing line, and the data line supplies a particular data voltage to the selected pixel according to the drawn current from the current sensing line until the drawn current matched with the data current; the other non-selected pixels draw currents from the power line for light-emission. Moreover, a pixel circuit and a data current writing method adapted for the above-mentioned active matrix OLED display also are provided.

Provided is an unrestricted suspension type initiative gravity compensation system. The system is composed of an unrestricted connecting module, a vertical constant tension suspension module, a horizontal follow-up module and a control module. The unrestricted connecting module comprises a connecting sleeve, an outer mounting frame, a force applying piece and a low friction bearing, and enables a spacecraft to carry out approximate unrestricted rotation round a center of mass. The vertical constant tension suspension module comprises a torque motor, a pinion and rack, a suspension hanging spring and a tension sensor, and enable the tensile force borne by the spacecraft in movement is equal to gravity. The horizontal follow-up module comprises a servo motor, a guide rail, a synchronous belt and a tilt angle sensor, and the suspension module is made to carry out horizontal movement along with the spacecraft to guarantee that the hanging spring is in a vertical state. The control module comprises an acquisition card, a driver and a motion control card. The design method of the unrestricted suspension type initiative gravity compensation system can compensate the gravity of the spacecraft in a ground test environment, further is used for reproducing the real movement of the spacecraft in the interspace microgravity environment, has the advantages of being stable in running, through in compensation and the like, and can provide the approximate unrestricted microgravity environment for movements with six degrees of freedom.

Methods and apparatus for dynamically compensating for signal variations in communications transmitters employing switch-mode PAs. An exemplary method includes first identifying a predetermined signal characteristic in an input signal applied to an input of a switch-mode PA. A modulated signal produced at the output of the switch-mode PA containing the identified signal characteristic is then sampled at approximately the same time the identified signal characteristic appears at the output of the switch-mode PA, to generate a digital sample representing an actual value of the identified signal characteristic. An error signal representing the extent to which the actual value deviates from an expected value is then generated. Finally, the DC level and / or gain of the input signal to the switch-mode PA is modified to reduce the error. By reducing the error in this manner, signal variations that adversely affect the accuracy of the switch-mode PA output signal are dynamically compensated for.

A digital predistorter compensates for nonlinear distortion of a power amplifier using a power series model. The digital predistorter includes a distortion generating unit configured to introduce a nonlinear distortion component of a prescribed order into a digital input signal supplied to the digital predistorter. The distortion generating unit has a multiplier configured to raise the digital input signal to a power consistent with the prescribed order of the nonlinear distortion component, and a finite impulse response filter connected in series with the multiplier. The digital predistorter also includes an adaptive controller configured to receive a reference signal and adaptively adjust the tap coefficient of the finite impulse response filter so as to bring the reference signal to a desired level.

Provided is an organic light emitting diode (OLED) display device including a plurality of pixels to display images, each of the pixels including an OLED, a driving transistor connected to the OLED, and a switching transistor configured to supply data signals to the OLED, the device including: a sensor configured to sense a change amount of a mobility of the driving transistor; a compensation value calculator configured to obtain a change amount of a threshold voltage of the driving transistor based on the sensed change amount of the mobility; and a data compensator configured to adjust the data signals based on the sensed change amount of mobility and the obtained change amount of the threshold voltage.

An unbalance identification and vibration suppression control system for a magnetic suspension rotating machinery comprises an unbalance identification module, an unbalanced force compensation module, a magnetic bearing power amplifier, an electromagnet rotor and a displacement sensor. Based on stable control of a magnetic suspension rotor, the unbalance of a magnetic bearing is identified in an online manner by a novel wave trap based on coordinate transformation, on one hand, the identification amount is used for compensating common-frequency current stiffness force, on the other hand, proper common-frequency current stiffness force is generated according to the identification amount to compensate common-frequency displacement stiffness force, and the influence of the low-pass characteristic of the power amplifier on compensation precision of the common-frequency displacement stiffness force is eliminated by leading a simplified inverse model of the magnetic bearing power amplifier into a feed-forward channel. When the magnetic suspension rotor rotates at a high speed, common-frequency bearing force is greatly reduced, and unbalanced vibration of the magnetic suspension rotor is remarkably suppressed. The unbalance identification and vibration suppression control system is simple, convenient, easy and particularly suitable for an actual high-speed magnetic suspension rotor system.

The present invention relates to a device and a method for extracting physiological information from remotely detected electromagnetic radiation emitted or reflected by a subject. A data stream derivable from electromagnetic radiation emitted or reflected by a subject is received. The data stream comprises a sequence of signal samples indicative of desired subject motion and of disturbing motion. The signal samples represent at least one region of interest exhibiting an at least partially periodic indicative motion pattern attributable to at least one physiological parameter, and a non-indicative motion region. The sequence of signal samples is processed, comprising deriving a sequence of derivative motion compensated samples at least partially compensated for undesired overall motion; detecting an evaluation parameter representative of motion compensation accuracy; and deriving at least one characteristic signal at least partially indicative of the at least partially periodic indicative motion pattern from the sequence of motion compensated samples, wherein deriving the characteristic signal is performed depending on the detected evaluation parameter.

The invention discloses a device and a method for correcting a transmission error of a precise numerical control machine closed loop servo system. The method comprises the steps of: adopting a position detection and feedback unit to receive an encoder signal sent by a main servo motor and a grating signal fed back by a grating signal detection system, namely, receive an actual position and speed signal of the numerical control machine, comparing with a position and speed instructed value sent by the numerical control machine, computing a position and speed compensation value, issuing an order by a position compensator and a speed compensator to drive an auxiliary servo motor so as to drive the numerical control machine to correspondingly regulate the position and speed to realize the position and speed compensation function. The invention decreases the abrasion aggravating phenomenon caused by a screw rod repeatedly and rapidly rotating with a small angle, so the invention not only promotes the reliability, the service life of the screw rod and the compensation precision of the system, but also decreases the high demand on the property of the servo motor and lowers the cost. The device of the invention can be used as an auxiliary assembly for rapidly feeding and moderating.

The invention discloses a quadrature error closed-loop compensating circuit for a vibrating type silicon micromechanical gyroscope. A gyroscope detection signal enters a synchronous demodulation circuit by diving into two parts after being amplified and filtered: one part of gyroscope detection signal is demodulated through reference signals generated by a phase-locked loop, and after low-pass filtering is performed, an angular velocity signal is obtained; the other part of the gyroscope detection signal is demodulated through the reference signals, which is subjected to phase displacement for 90 degrees, and generated by the phase-locked loop, after low-pass filtering is performed, the voltage amplitude of quadrature error signals in the detection signal is extracted out, and a feedback control voltage is obtained through an integrating circuit; the feedback control voltage passes through a single-double switching circuit and is modulated to the driving frequency through a driving detection capacitance so as to generate a feedback current to compensate quadrature displacement current in the detection shaft direction, and then quadrature error amount in the detection signal is eliminated and finally, the pure angular velocity is obtained. According to the invention, the quadrature error amount in an angular velocity detection loop is eliminated by using the feedback current to compensate the quadrature displacement current in the detection shaft direction of the micromechanical gyroscope, and high-precision closed-loop compensating for the quadrature error of the vibrating type silicon micromechanical gyroscope is achieved.

The invention discloses a display method of a liquid crystal display, a liquid crystal display and a display device. Since the image data of the frame to be displayed can be compensated according to the relationship table between the pre-established gray scale value and the corresponding compensation amount, the image data of the frame to be displayed can be compensated by The grayscale value of the image data is compensated, so that the influence of the coupling voltage between the data line and the common electrode on the display screen of the liquid crystal display can be avoided. Because in the prior art, compensation is performed for the common electrode signal on the common electrode, and the above-mentioned liquid crystal display display method, liquid crystal display and display device provided in the embodiment of the present application compensate the grayscale value of the image, Therefore, compensation can be performed for the gray scale value of each pixel, thereby improving the compensation accuracy.

The invention discloses a mismatch calibration method for a streamline ADC (Analog-to-Digital Converter) multi-bit sub DAC (Digital-to-Analog Converter) capacitor. The mismatch calibration method comprises the following steps of: firstly, initializing a streamline-stage analogue input signal to be calibrated and enabling the outputs of voltage comparators in a sub ADC to be 0 respectively; secondly, measuring an output voltage value of an MDAC (Multiplexing Analog-to-Digital Converter) in the streamline stage; thirdly, setting the output of the ith voltage comparator in the sub ADC to be 1, setting outputs of other voltage comparators to be 0 and then measuring the output voltage value of the MDAC again; fourthly, calculating to obtain a mismatch error value of paired capacitors; fifthly, calculating an output voltage error value of the MDAC in the streamline stage to be calibrated according to the mismatch error value of the paired capacitors; sixthly, connecting a compensation circuit to next streamline stage of the streamline stage to be calibrated in the fifth step and calibrating compensation voltage; and seventhly, compensating the mismatch error of the sub DAC capacitor in the streamline stage to be calibrated according to the obtained compensation voltage. The calibration method can be used for calibrating nonlinear error and simultaneously has higher calibration precision.

The invention provides a current full compensation method and a system based on single-phase earth fault. When zero sequence voltage is not in a preset voltage value range, namely, the happened single-phase earth fault is instant ground connection, an arc extinction coil device with high flexibility in high-resistance ground connection can compensate ground connection capacitive current. When thezero sequence voltage is in the preset voltage value range, namely, the happened single-phase earth fault is not instant ground connection, a breaker in a fault phase transfer ground connection deviceconnected with a fault phase is turned off, fault current is converted into earth current, and a compensable compensation device is further utilized to output full compensation fault residual current. The fault current is converted into the earth current, the earth current can serve as tracking compensation signals of the compensable compensation device, and judgment reference is provided for a compensation effect of the compensable compensation device. In addition, the earth current can be determined by measurement; furthermore, measurement is convenient, and complex calculation is avoided;thus, compensation quickness and accuracy are ensured, compensation precision is improved, and fault points are shielded.

The invention provides a joint type manipulator low gravity compensation system comprising a support, an upper platform, a right-angle type tracking platform, a polar-coordinate type tracking platform, a gravity compensation system body, a suspending device and a control system. The upper platform is mounted on the support, the right-angle type tracking platform is capable of moving corresponding to the X and Y directions of the upper platform, the polar-coordinate type tracking platform is mounted below the right-angle type tracking platform and is capable of rotating around the Z-axis of the right-angle type tracking platform or moving in the X and Y directions with the polar-coordinate type tracking platform, the gravity compensation system body is mounted on the top of the right-angle type tracking platform and the bottom of the polar-coordinate type tracking platform, the suspending device is connected between the gravity compensation system body and a joint type manipulator, and the control system is use for monitoring and controlling the components. The right-angle type tracking platform and the polar-coordinate type tracking platform are combined, multiple joint manipulator complex movement tracking is implemented, the system can be adaptive to movement tracking of manipulators of carriers with different postures, multiple manipulator suspension and multiple suspending point coordinated movement are implemented, gravity compensation is low, and accuracy is high.

The invention discloses a compensation method for enhancing the machining accuracy of a numerical control machine tool and a magnetostrictive compensation mechanism, in particular to a method for compensating the accuracy of the numerical control machine tool through combined feed and a modularized accuracy compensation mechanism. The method comprises the following steps: aiming to the machine tool, because of a geometrical error formed by a plurality of factors such as manufacture, abrasion, etc., feed errors in a full-stroke range are measured by a dual-frequency laser interferometer; the modularized compensation mechanism is driven to produce the corresponding displacement compensation quantity through power amplification after an error signal is pretreated; the micro-displacement feed is performed in cooperation with the macro displacement feed, so as to correct the accuracy of the machine tool. High-frequency vibration signals are superposed as a drive compensation mechanism for driving the voltage to perform vibration cutting, thereby effectively inhibiting a flutter phenomenon caused by friction during cutting, and enhancing the machining accuracy. An LVDT inductive displacement transducer is mounted at the tail end of an elastic micro-displacement mechanism for position feedback regulation; furthermore, the closed-loop control is formed through real-time control operation in a DSP chip to realize precise positioning.

The embodiment of the invention discloses a voltage drop compensation method, a device thereof and a display device, which relate to the technical field of display and aim at compensating IR Drop of the display device to enhance the display effects of the display device. The voltage drop compensation method comprises steps: the impedance distribution of each pixel row of a display panel at the maximum display brightness is acquired, and a voltage drop model is built according to the impedance distribution of each pixel row; source-end input current of the display panel in the case of real-timedisplay is acquired, the source-end input current is used as an input value of the voltage drop model, and voltage drop corresponding to each pixel row is determined; and according to the voltage drop, a compensation gray scale of a corresponding pixel row is determined respectively, and according to each compensation gray scale, gray scale compensation is carried out on the corresponding row pixel respectively. The voltage drop compensation method, the device thereof and the display device provided in the embodiment of the invention are used for a large-size AMOLED display device.

A grid-connected inverter grid-connection point voltage dynamic compensation control method, namely, a dynamic voltage amplitude wattless current IQ (U) voltage compensation control method is provided. When the voltage of a grid-connection point of a grid-connected inverter rises and exceeds the limitation on voltage deviation posed by power grid standards, the grid-connected inverter is controlled and is made to absorb a certain wattless power, such that the voltage of the grid-connection point can be restored to be in a voltage deviation range; and when the voltage of the grid-connection point voltage drops, the grid-connected inverter is controlled and is made to generate a certain wattless power, such that the voltage of the grid-connection point can be restored to be in a normal voltage range.

The invention discloses a repetitive-control-based method for controlling a compensation current of a DSTATCOM (Distribution Static Synchronous Compensator). The method comprises the following steps of: (1) acquiring a grid voltage, a load current and the compensation current; (2) extracting current commands from the load current; and (3) carrying out repetitive control and PI (Proportional-Integral) control according to the current commands, and then, outputting voltage commands to the DSTATCOM. According to the repetitive-control-based method for controlling the compensation current of the DSTATCOM, the no-static-error tracking of the low-order harmonics, comprising fundamental harmonics, of the DSTATCOM can be achieved, the compensation accuracy of the DSTATCOM is improved, the compensation bandwidth of the DSTATCOM is increased, and the compensation capability and accuracy of the DSTATCOM with unbalanced loads are improved, so that the DSTATCOM can have harmonic compensation and suppression capabilities, the use of passive filters at the outlet side of the DSTATCOM is reduced, the harmonic performance of the compensation current of the DSTATCOM is improved, the harmonic output is reduced, and the pollution to a power grid is reduced.

The invention discloses a method for locating Mark points on a PCB (printed circuit board) by utilizing an outline gravity center method. The method is characterized by comprising the following steps: on the basis of taking a Mark point extracted in initial programming as a datum point, taking the outline gravity center of the Mark point of the board to be detected, comparing the outline gravity center of the Mark point with the gravity center of the datum point, and performing PCB compensation by virtue of offset between the two gravity centers. The method is used for performing the PCB compensation by extracting the outline gravity center of the Mark point on the PCB and utilizing the offset between the gravity centers of the datum Mark point and the Mark point to be detected. The gravity centers are obtained by binary images and are easy and feasible to obtain. The algorithm is independent from the shapes of the Mark points, is not influenced by the intensity of illumination, achieves sub-pixel-level precision, and is high in compensation precision.

The invention discloses a ground fault current compensation system and method for a self-produced power supply phase power supply. The system comprises a phase power supply generator, a phase power supply phase compensator, a fling-cut switch, a controller and a voltage transformation device. An output end of a phase compensator of a power supply is connected to a system neutral point through thefling-cut switch. The system can passively generate power distribution network power supply phase power supply and harmonic phase power supply and input anti-phase power supply phase power supply andthe harmonic phase power supply into the system according to fault logic. The complete compensation of power distribution network grounding fault reactive current, harmonic current and active currentis achieved, the defect that compensation is incomplete by adopting a power electronic device inversion injection method after electricity is taken from a bus system is overcome, and the problems thatan active inversion method has a poor metallic grounding compensation effect and a traditional arc suppression coil cannot achieve full compensation are solved. The system is efficient and accurate and can completely compensate overvoltage and overcurrent generated by a grounding fault, the safety of a power grid and equipment is guaranteed, and the risk of electric shock of a human body is completely avoided.

The invention discloses a method for friction compensation of a ball screw feeding system. On the basis that the actual friction phenomenon of the system is analyzed, segmented models of friction torque in speed sections are provided, friction in the low-speed section is modeled through a Steck Berry model, and friction in the high-speed section is modeled through a logarithmic model. Unknown parameters of the friction models are recognized through a hybrid genetic algorithm, the friction compensation amount at the real-time speed is estimated based on the recognized friction models, and friction compensation of the system is achieved in a compensation amount feedforward mode. Through the segmented friction model, friction in the ball screw feeding system is accurately described, the parameters of the friction models are accurately recognized through the designed hybrid genetic algorithm, motion accuracy of the ball screw feeding system is improved based on the feedforward compensation mode of the friction models, and the method can be widely applied to various systems which comprise ball screw feeding mechanisms.

The invention discloses a device and method for positioning a workpiece on a linear conveyor belt through a visual system. The workpiece is placed in a photographing area to be fixed. A visual system photographs and records the position information of the workpiece in the photographing area, the linear conveyor belt conducts linear conveying on the workpiece from the upstream direction to the downstream direction, and the conveyor belt is stopped after conducting conveying for a distance. A pulse encoder detects linear distance data which are generated after the linear conveyor belt moves and transmits the data to a robot. The robot analyzes the data and works out the needed compensation amount for a work track, accurate positioning is achieved, and finally the robot acts on the workpiece. By means of the device and method for positioning the workpiece on the linear conveyor belt through the visual system, far-end visual positioning is used for near-end work track compensation, and compared with a dynamic linear tracking technology, compensation precision is high, and in addition the speed of the conveyor belt can be higher.

The invention discloses a gray-scale value compensation method and system for a display panel, and the display panel. The method comprises the steps: obtaining an image of at least one gray scale of the display panel, and obtaining the gray-scale value compensation values of a plurality of pixels on the display panel and the corresponding position data of the pixels; judging whether the whether there is one or more pixel groups which consist of pixels with the same gray-scale compensation value, or whether there is one or more pixel groups which consist of pixels with the same gray-scale compensation value and the pixels with the gray-scale compensation value difference with the pixels with the same gray-scale compensation value being within a first threshold range: recording at least one gray-scale compensation value of each pixel group and the corresponding position data of each pixel in the pixel groups if there is one or more pixel groups above, so as to achieve the compensation for the display panel. The method can effectively improve the brightness uniformity of the display panel in the above mode.

An apparatus includes a positioning system and a patient reference sensor (PRS). The positioning system acquires a plurality of raw PRS readings over time, which can indicate the position and orientation of the PRS. A filter is configured to process the raw PRS readings and output filtered PRS readings. The filter outputs filtered PRS readings as a baseline value while the raw PRS readings stay within a predetermined range and output filtered PRS readings as unchanged raw PRS readings when the raw PRS readings reach or vary outside of the predetermined range. A motion compensation function generated based on at least the filtered PRS readings can be used to correct a subject position and orientation (P&O) to compensate for the motion of the moving region of interest over time.

The invention relates to a symbol synchronization and Doppler compensation method for a mobile orthogonal frequency division multiplexing (OFDM) underwater sound communication signal. The method comprises the following steps of: obtaining rough estimation of a first OFMD symbol start position according to a frame header signal, extracting a symbol, then obtaining Doppler expansion rough estimation of the symbol according to a frequency measurement simple-frequency signal in the symbol, converting the symbol to a frequency domain according to Chirp-z conversion, searching a precise start moment and a Doppler expansion amount of the symbol by taking a pilot of the frequency domain and a relevant value of a local pilot as cost functions, presuming the start position of the next symbol according to the start position of the current symbol, extracting the next symbol, and repeating the operations till the end of a frame of signal. According to the Doppler measurement and compensation method, based on the Chirp-z conversion, the measurement and compensation precision is high; the Chirp-z conversion is implemented according to fast Fourier transformation (FFT); the practicability is high; according to the Doppler expansion search method which is in a manner that large step length is superior to small step length, so that the search efficiency is high; a Doppler measurement range is not limited; and the method can be used for constant-speed motion and variable-speed motion.

A digital predistorter compensates for nonlinear distortion of a power amplifier using a power series model. The digital predistorter includes a distortion generating unit configured to introduce a nonlinear distortion component of a prescribed order into a digital input signal supplied to the digital predistorter. The distortion generating unit has a multiplier configured to raise the digital input signal to a power consistent with the prescribed order of the nonlinear distortion component, and a finite impulse response filter connected in series with the multiplier. The digital predistorter also includes an adaptive controller configured to receive a reference signal and adaptively adjust the tap coefficient of the finite impulse response filter so as to bring the reference signal to a desired level.

The invention discloses a method capable of automatically eliminating a motion accumulated error of a robot. The problems that the robot is required to be stopped working in the process of eliminating an operating error of the robot, the processing continuity is blocked and the high efficiency and accuracy during the processing and production of the robot are reduced in the prior art are solved. The method comprises the following steps of: (1) obtaining an actual position relationship of joints of the robot and actual information of an actual rotating angle through a visual detection algorithm; (2) obtaining a theoretical position relationship of joints of the robot and theoretical rotating angle information through a path planning algorithm by taking the original motion path as reference; (3) comparing the actual information obtained in the step (1) with the theoretical information obtained in the step (2) to obtain an accumulated error value of the robot; and (4) automatically loading the accumulated error value into a motion control program, and performing position compensation on each joint according to the accumulated error value so as to finish online zero calibration.

The invention discloses a method and a device for the real-time compensation of the roll angle deviation of an airborne laser radar. A roll angle compensation control device and a roll angle driving device are designed mainly. The devices comprise a roll angle compensation controller, a laser Q switch control circuit, a pumping lamp high-frequency pulse power supply and an electro-optic Q switch.The roll angle compensation controller receives the roll angle deviation measured by a GPS / INS combined measuring system, combines a real-time angle measured by a rotary prism optical electric axial angle encoder for making a judgment and outputs a high-level conduction control signal; the signal and a high-frequency pulse signal of the pumping lamp power supply commonly act on the laser Q switchcontrol circuit so that the laser Q switch control circuit outputs the high-voltage pulse signal to the electro-optic Q switch in a control signal connection period so as to control a laser emitter to emit laser pulses in a proper scanning angle area to realize real-time high-precision compensation of the roll angle deviation.

The invention relates to an inverse synthetic aperture radar imaging signal processing technology, in particular to a sparse aperture ISAR imaging phase self-focusing method based on image quality guidance. The method comprises the following steps of: S1, constructing a sparse aperture phase self-focusing model based on compressed sensing; S2, selecting a target distance unit that participates inphase estimation parameter estimation; S3, setting an initial parameter value of an iterative algorithm; S4, estimating and compensating a single wheel phase error; S5, determining an iteration termination condition; and S6, updating the phase self-focusing, and reconstructing an ISAR image. According to the sparse aperture ISAR imaging phase self-focusing method based on the image quality guidance, the ISAR imaging phase self-focusing, the ISAR image reconstruction, and the image quality evaluation under the sparse aperture are combined, and four steps of phase error estimation, compensation,reconstruction, and evaluation are realized, the robustness of the algorithm and the accuracy of the phase compensation are improved , and a target ISAR image with higher compensation accuracy and better focusing performance is obtained by reducing the iterative phase error, estimating offset, improving compensation accuracy step by step.

The invention discloses a grounding fault current compensation system and method for a self-generated power supply phase power supply. The grounding fault current compensation system comprises a phasepower supply converter, a fling-cut switch, a voltage transformation device and a controller, wherein the input end of the phase power supply converter is connected with a bus, the output end of thephase power supply converter is connected with the input end of the fling-cut switch, the voltage transformation device is connected between the phase power supply converter and a system neutral pointin series, the controller is connected with a voltage transformer of the bus, and the output end of the controller is connected with the input end of the fling-cut switch. The system can passively generate a power distribution network power supply phase power supply and a harmonic phase power supply, and the reversed-phase power supply phase power supply and the harmonic phase power supply are put into the system according to fault logic, so that complete compensation of reactive current and harmonic current of the grounding fault of the power distribution network is achieved, the defect thatthe compensation is incomplete by adopting a power electronic device inversion injection method after electricity is taken from a bus system is overcome, and the problems that an active inversion method is poor in metallic grounding compensation effect and a traditional arc suppression coil cannot achieve full compensation are solved.

The invention discloses a temperature compensation system and a temperature compensation method for a capacitance type micro-mechanical accelerometer. The temperature compensation system for the capacitance type micro-mechanical accelerometer comprises a capacitance type micro-mechanical acceleration sensor, a driving signal generating circuit, a capacitance / voltage switching circuit, an analog band-pass filter, a first digital / analog (D / A) converter, an analog / digital (A / D) converter, a second D / A converter, a third D / A converter and a field programmable gate array chip. The temperature compensation method for the capacitance type micro-mechanical accelerometer comprises three steps of: carrier wave generating / synchronously demodulating, resonance frequency locking and zero offset temperature compensating. According to the invention, the temperature change of a capacitance type micro-mechanical acceleration sensor is detected by the means that the resonance frequency of the capacitance type micro-mechanical acceleration sensor changes along with the change of the temperature, and the temperature compensation system is used for compensating the temperature by the means that the resonance frequency is taken as a compensation reference signal of an output signal of a capacitance type micro-mechanical accelerometer system. Therefore, the temperature compensation cost is reduced, the influence of temperature measurement errors on compensation precision is eliminated, and the temperature compensation precision is improved.