motor drive

A technology of motor driving and driving part, which is applied to electric devices, motor vehicles, control driving, etc., can solve problems such as sensor sticking, and achieve the effect of suppressing over-driving

Active Publication Date: 2018-10-12
MICROSPACE +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] In particular, when there is an abnormality in the torque sensor or the surrounding conditions of the torque sensor, etc. (for example, when torque is applied to the pedal while the rear wheel is locked, when the torque sensor fails, and when the torque sensor If the sensor is stuck due to foreign matter or mud, etc.), it may be misrecognized as a large torque input and excessive rotation of the motor drive wheel may be allowed.

Method used

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Examples

Experimental program
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Embodiment approach 1

[0033] figure 1 It is an external view showing an example of a bicycle with a motor as an electric assist vehicle in this embodiment. The motorized bicycle 1 is equipped with a motor drive device. The motor drive device has a secondary battery 101 , a motor drive controller 102 , a torque sensor 103 , a pedal rotation sensor 104 , a motor 105 , and an operation panel 106 . In addition, the bicycle 1 with a motor also has a free wheel and a transmission.

[0034] The secondary battery 101 is, for example, a lithium-ion secondary battery with a maximum supply voltage (voltage when fully charged) of 24V, but may be another type of battery, such as a lithium-ion polymer secondary battery, a nickel-metal hydride storage battery, or the like.

[0035] The torque sensor 103 is installed on a wheel mounted on the crankshaft, detects the driver's pedal force, and outputs the detection result to the motor drive controller 102 . Further, the pedal rotation sensor 104 is provided on a ...

Embodiment approach 2

[0109] Figure 6 A configuration example of the boost suppression control unit 1210 of the present embodiment is shown. The boost suppression control unit 1210 according to this embodiment includes an initial masking unit 2101, an accumulated distance input unit 2102, a parking detection unit 2103, a first consumed distance input unit 2104, a second consumed distance input unit 2105, a remaining distance limiting unit 2106, Road modulator 2107, travel distance register 2108, allowable distance register 2109, determination section 2113, and adders 2110 to 2112.

[0110] The cumulative distance input unit 2102 outputs the cumulative distance corresponding to the pedal pulse output from the pedal rotation sensor 104 according to the rotation of the pedal. The accumulation distance is the same as that of the first embodiment.

[0111] When the adder 2110 receives the output of the accumulated distance from the accumulated distance input part 2102, the accumulated distance and th...

Embodiment approach 3

[0134] Figure 8 A configuration example of the boost suppression control unit 1210 of the present embodiment is shown. The boost suppression control unit 1210 of this embodiment has an initial mask unit 2201, a converted vehicle speed detection unit 2202, an upper limit limiter 2203, a vehicle speed input unit 2204, a lower limit limiter 2205, a parking detection unit 2206, an allowable remaining distance register 2207, a determination Section 2208 and adders 2209 and 2210.

[0135] In the third embodiment, instead of calculating with a fixed accumulated distance and consumed distance for each pulse of the pedal and / or the motor, the pedal-converted vehicle speed and the vehicle speed are integrated at predetermined calculation frame time intervals (for example, 150 Hz) form for processing. The pedal-converted vehicle speed is regarded as the timed accumulation distance of each calculation frame, and the vehicle speed (specifically, the converted speed of the motor drive wh...

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PUM

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Abstract

Motor drive. The problem is to effectively suppress overdrive of the motor. As a solution, the present motor drive device includes: a driving unit that drives the motor according to the torque input by the human’s rotational input; The relationship between the integrated value of the first amount and the integrated value of the second amount corresponding to the rotation of the rotating body driven by the motor controls the driving of the motor by the drive unit.

Description

technical field [0001] The invention relates to motor drives. Background technique [0002] The following methods are known as methods for detecting slipping of motor-driven wheels and overrotation due to other factors in electric bicycles to prevent overdrive of the motor. [0003] (1) Calculate the converted equivalent speed of the pedal drive wheel and the speed of the motor drive wheel based on the pedal rotation pulse and / or motor rotation pulse, etc., and compare the two. If one of the motor drive wheels is too fast, it is judged as Slippage or excessive rotation of the motor drive wheel inhibits motor drive. [0004] (2) Calculate the acceleration of the motor-driven wheel according to the rotational speed of the motor. If the acceleration is greater than the upper limit that may normally exist, it is judged to be slipping or excessive rotation, and the driving of the motor is suppressed. [0005] However, in the comparison of the speeds according to the method (1),...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60L15/28
CPCB60L15/28B60L2240/423B60L2260/44B60L3/0061B60L3/10B60L3/12B60L2200/12B62M6/45B62M6/55B60L50/20Y02T10/72B62M6/40B62M6/80
Inventor 田中正人保坂康夫白川弘和柳冈太一
Owner MICROSPACE
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