Analogue proportional-integral controller circuit based on transconductance-capacitance structure
A proportional-integral, capacitive structure technology, applied in electric controllers, controllers with specific characteristics, etc., can solve the problems of high static power consumption and occupying a large chip area, and achieve the effect of reducing chip area and static power consumption
Active Publication Date: 2013-04-17
INST OF ELECTRONICS CHINESE ACAD OF SCI
View PDF3 Cites 12 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0004] The purpose of the present invention is to propose an analog proportional-integral controller based on a transconductance-capacitance structure, to solve the problem that the existing analog proportional-integral controller realizes that the circuit occupies a large chip area and has high static power consumption, and satisfies the requirements of the gyro drive. Requirements for the adjustability of the proportional coefficient and integral coefficient of the proportional-integral controller in control systems such as electric circuits
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0017] The structure of the analog proportional-integral controller based on the transconductance-capacitance structure of the present invention is as follows: image 3 As shown, it includes an integrated equivalent transconductance controllable operational transconductance amplifier and an off-chip resistor-capacitor network, and simultaneously realizes subtraction and proportional-integral operation functions. The operational transconductance amplifier outputs an error current signal (Ie) after making a difference between the input signal (Vin) and the reference signal (Vref). The error current signal is proportional and integrated through the resistor-capacitor network and outputs a voltage signal (Vout). Only one operational transconductance amplifier is used in the controller, which reduces the power consumption and area of the circuit; and the use of a resistor-capacitor network only needs to lead out one pad, which further reduces the area of the circuit. The propor...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses an analogue proportional-integral controller circuit based on a transconductance-capacitance structure and relates to the technology of an integrated circuit. The circuit consists of an integrated operational transconductance amplifier of which the equivalent transconductance can be controlled and an off-chip resistor-capacitor network. Meanwhile subtraction and proportional-integral operation functions are realized. After making difference between an input signal (Vin) and a reference signal (Vref), the operational transconductance amplifier outputs an error current signal (Ie), the error current signal is subjected to proportional and integral operation through the resistor-capacitor network, and a voltage signal (Vout) is output. The proportional factor and the integral factor of a controller are respectively adjusted by changing resistance value R1 and capacitance value C in the resistor-capacitor network, or are simultaneously adjusted by adjusting the equivalent transconductance value gm of the operational transconductance amplifier. Compared with the traditional controller structure, the controller has the advantages that the area and the power consumption of a chip of the controller are reduced under the condition that the parameter adjustabilities of the controller are ensured.
Description
technical field [0001] The invention relates to the technical field of integrated circuits, in particular to an integrated circuit design of a proportional-integral controller in a control system such as a micromechanical gyroscope drive loop. Background technique [0002] Due to the wide application of micromechanical gyroscopes in the fields of inertial navigation, automotive electronics and entertainment electronics, international academic and industrial circles have increasingly paid attention to and researched on it. The working principle of most micromechanical gyroscopes is based on the Coriolis coupling effect, that is, the energy of the driving mode is transferred to the detection mode through the Coriolis force. Since the external angular velocity is proportional to the detected Coriolis force only when the gyroscope vibrates at a constant speed in the driving mode, it is necessary to add an amplitude control module in the design of the driving circuit to control t...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More IPC IPC(8): G05B11/42
Inventor 吴焕铭杨海钢尹韬
Owner INST OF ELECTRONICS CHINESE ACAD OF SCI