Energy-saving-oriented self-energizing control method for car active suspension system
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A technology of active suspension and control method, which is applied in the direction of suspension, elastic suspension, vehicle components, etc., and can solve the problem of high energy consumption of active suspension system
Active Publication Date: 2015-12-23
严格集团股份有限公司
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[0004] The present invention solves the problem of large energy consumption of the active suspension system, and also solves the problem
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[0084] Specific implementation mode one, reference figure 1 To describe this embodiment in detail, the energy-saving-oriented self-powered control method of an automobile active suspension system in this embodiment includes the following steps:
[0085] Step 1. According to the performance index requirements of the active suspension system, design the feedback controller of the active suspension system;
[0086] Step 2. Based on the state of the motor and the charging and discharging of the power supply, the motor in the active suspension system is divided into 3 working areas, which are respectively:
[0087] Area 1: The motor is in the state of a motor, consuming power, and the power supply is consuming; Area 2: The motor is in the state of a generator, generating power, and the power is consuming; Area 3: The motor is in the state of a generator, generating power, and the power supply is charging;
[0088] Step 3. Determine whether the active suspension system can realize self-supp...
Example Embodiment
[0107] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT Two. According to the energy-saving-oriented auto-energy control method of the active suspension system of an automobile according to claim 1, in step four, the judgment of the suspension working mode is the suspension calculated based on the measurement value of the displacement sensor Relative speed v and desired current i * Calculate γ to determine the working mode of the suspension.
Example Embodiment
[0108] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT Three. According to the energy-saving-oriented self-powered control method of the automobile active suspension system according to claim 1, the output power of the motor in step 2 is P a , The output power of the power supply is P s ;
[0109] P in the working area of the motor a > 0, the motor is in the state of a motor and consumes electric energy, P s > 0, power consumption;
[0110] Motor work area 2 P a s > 0, power consumption;
[0111] The working area of the motor three P a s <0, power charging, with the prerequisites for recycling the energy input from the road.
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Abstract
An energy-saving-oriented self-energizing control method for a car active suspension system, relates to the field of energy-saving control for car active suspension systems, and solves the problem about high energy consumption of the active suspension system. The method comprises the followings: as per performance indexes required by the active suspension system, designing a feedback controller of the active suspension system; based on the status of a motor and the charge-discharge condition of a power source, dividing the motor into three working areas; according to the self-energizing criterion, determining whether or not the active suspension system is capable of self energizing; if yes, computing to obtain the value of the pattern variable gamma, and determining the working area of the motor and the operating mode of the suspension according to the value of gamma; according to the operating mode of the suspension, designing corresponding operating circuit for each suspension mode, and according to the relationship between the variable resistance Rvar and the desired current i* in the circuit of the motor under each operating mode of the suspension system, switching to the corresponding operating circuit to realize switching among operating modes of the suspension system and changing of the current direction, thus realizing self-energizing control. The method disclosed in the invention is applicable to self-energizing control in other occasions.
Description
technical field [0001] The invention relates to the field of energy-saving control of automobile active suspension systems. Background technique [0002] The active suspension system of automobiles adopts actuators and control algorithms, which can actively generate force according to different road conditions, and has a good vibration reduction effect. However, because the active suspension system uses actuators, a large number of sensors, and input and output circuits, it has problems such as high cost, high energy consumption, complex design, and low reliability, which limits the practical application of the automotive active suspension system. In order to reduce the energy consumption of the active suspension system, energy-saving control of the active suspension system is required. [0003] If the active suspension system uses a motor as an actuator, when the vehicle is disturbed by the road surface, the vibration energy generated by the uneven road surface will be dis...
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