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Direct Drive Volume Control applied to a Fuel Injection Control of Marine Diesel Engine
Kazushi Sanada 유공압건설기계학회 2015 유공압건설기계학회 학술대회논문집 Vol.2015 No.10
This paper proposes a new application of direct drive volume control (DDVC) to fuel injection control for marine diesel engine. In the DDVC fuel injection, a cylinder pushes a plunger pump which is the same as the plunger pump of the conventional system. Fuel mass and timing of injection are flexibly controlled by electric drive signal of the AC servo motor. A simulation model of DDVC fuel injection system is built using Simulink. Feedback control of the quantity of fuel injection is proposed. Performance of the feedback control is demonstrated through simulation study.
Adaptive Controlled High Precision Winding for Columnar Parts
Takashi Ishigami,Kazushi Sanada,Mitsuaki Shiba,Hiroyasu Yanase 제어로봇시스템학회 2009 제어로봇시스템학회 국제학술대회 논문집 Vol.2009 No.8
The diversification and miniaturization of electric products have been rapidly advancing. In coil winding for electric parts, technologies that flexibly adapt to changes of wire diameter and that make denser wire coils are required. We developed an innovative winding system for columnar parts, such as solenoids, and experimentally proved its effectiveness. This system has a CCD line sensor to measure the diameter of the wire and the winding angle. It also has a carriage and rotating motor that are rate-controlled on the basis of this data. The pitch per rotation of the carriage is controlled in correspondence with the wire diameter measured just before winding. A target winding angle that will not cause back winding and gaps between the wire coils was experimentally determined, and the system controlled the winding angle to be the target angle during winding. We made an experimental device and verified the effect of the winding system. The results showed that the pitch per rotation of the carriage automatically adapted to changes in the wire diameter and the winding angle remained at the target angle ??6%. The experimental device with this system achieved complete contact winding for wires with diameters of 80 ?130 ??m. This winding system is expected to be used for producing various high precision wound columnar parts.
Clutch Slip Control of Automatic Transmission Using Backstepping Technique
Bingzhao Gao,Hong Chen,Kazushi Sanada 제어로봇시스템학회 2009 제어로봇시스템학회 국제학술대회 논문집 Vol.2009 No.8
To improve the shift quality of vehicle with clutch-to-clutch gear shifts, a nonlinear controller is designed for the clutch slip control during the inertia phase. Backstepping technique is used to deduce the control algorithm. Model uncertainties including steady state error sand unmodelled dynamics are also considered as disturbance inputs and the controller is designed such that the error dynamics is input-to-statestable(ISS). Finally, the designed controller is discretized and tested on a complete power train simulation model.
POWER LOSS EVALUATION OF AUTOMATED MANUAL TRANSMISSION WITH GEARSHIFT ASSISTANT MECHANISM
Zhiqiang Sun,Bingzhao Gao,Jiaqi Jin,Kazushi Sanada 한국자동차공학회 2021 International journal of automotive technology Vol.22 No.2
This paper deals with the power loss evaluation in gearshift assistant mechanism applied in automated manual transmission. The originalities include building the numerical models of gearshift assistant mechanism efficiency analysis for cost penalty evaluation and designing gear ratio matching algorithm to match the gear ratios of epicyclic mechanism with desired ones, which is expected to minimize the clutch friction losses by reducing the angular velocity differences between two clutch pads. In the numerical models, gear meshing losses and friction losses are considered the main power sink. By the kinematic relationships and power flow analysis, a set of generalized efficiency calculating formulas of simple epicyclic mechanism in six working modes with respect to teeth numbers are summarized, which are useful computer-aided tools in calculating multiple simple epicyclic mechanisms’ efficiency. The matched gear ratios and the efficiency models are tested on a powertrain simulation model and several simulation results are reported. Finally, this paper summarized the merits and further research targets of the proposed transmission, which is a promising structure to achieve swift and smooth gearshift with low power losses.
Zhiqiang Sun,Bingzhao Gao,Jiaqi Jin,Kazushi Sanada 한국자동차공학회 2019 International journal of automotive technology Vol.20 No.5
To eliminate or reduce torque interruption and driveline jerk for traditional automated manual transmission (AMT), AMT with a gearshift assistant mechanism (GAM) is originally proposed in this paper. The GAM consists of a torque complementary motor and an epicyclic mechanism with a synchronizing clutch. During gear upshift, the electrical motor provides complementary torque to primary (output) shaft after synchronizer discharges, then the synchronizing clutch will work to synchronize primary shaft with anticipated gear. The lockup of the synchronizing clutch will ensure the synchronization of primary shaft and anticipated gear. After finishing synchronizing, synchronizer will lock up the anticipated gear and engine recovers torque supply to finish gearshift. Based on the mathematical model of the proposed transmission, its detailed structure, kinematic character and dynamic behavior are discussed. Controllers are designed to achieve presumed gearshift performance, and simulation results show its effectiveness. Problems may be encountered in engineering application and possible application on electrical vehicle (EV) of the proposed transmission are also discussed. Finally, this paper summarized the merits and further research targets of the proposed transmission, which is a promising structure to achieve swift and smooth gearshift.